Grinding skin GOST 5009 82. Grinding fabric skin
5. The limitation of the validity period was removed according to protocol N 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)
6. EDITION (November 2001) with Amendments No. 1, 2, approved in April 1987, July 1989 (IUS 8-87, 11-89)
This standard applies to cloth abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, mineral spirits.
1. TYPES AND DIMENSIONS
1. TYPES AND DIMENSIONS
1.1. The skin should be made of types:
1 - for machine processing of non-metallic materials, metals and alloys of low hardness and manual processing of various materials;
2 - for machine and manual processing of hard and highly viscous materials.
1.2. The skin should be produced in rolls, the dimensions of which are indicated in Table 1.
Table 1
Width, mm | Length, m ±0.3 |
|
Previous off | ||
725, 740, 770, 800, 830 | ||
____________
* For widths up to 830 mm grit 63-32 and widths over 830 mm grit 32-12.
** For widths up to 830 mm, grit less than 32 and widths over 830 mm, grit less than 12.
Note. At the request of the consumer, it is allowed to manufacture rolls of other sizes.
1.3. The skin should be made with the following types of working layer:
C - solid;
R - embossed.
1.4. The designs and dimensions of the relief working layer must correspond to those indicated in the drawing and in Table 1a.
Table 1a
Dimensions in mm
Grain | ||||||||
Interval | Previous off | Interval | Previous off | Interval | Previous off | Interval | Previous off |
|
1.5. The deviation from parallelism of the generatric lines of the relief must be within the tolerance per step of the relief.
An example of a symbol for a cloth abrasive paper type 2, with an embossed working layer 830 mm wide, 50 m long, on medium twill N 2 severe, made of white electrocorundum grade 24A, grit 40-H, on skin glue:
2P 83050 S2 24A 40-N M GOST 5009-82
2. TECHNICAL REQUIREMENTS
2.1. Skins shall be manufactured in accordance with the requirements of this standard.
2.2. The skin should be made from grinding materials listed in Table 2.
table 2
Type of abrasive | Grade of sanding material |
Normal electrocorundum | 15A, 14A, F14A, 13A, F13A |
White electrocorundum | 25A, 24A, 23A |
Alloyed electrocorundum | 94A, 93A, 92A, 91A, 91A-M, 92A-M |
Zirconium electrocorundum | |
monocorundum |
Note. At the request of the consumer, it is allowed to manufacture skins from grinding materials of other brands or their mixtures.
(Changed edition, Rev. N 1, 2).
2.3. For the manufacture of skins, cotton fabrics according to GOST 3357 should be used as a basis in accordance with Table 3.
Table 3
Fabric name | Symbol |
Extra light plain dyed twill | |
Twill light N 1 severe | |
Light twill N 2 plain dyed | |
Medium twill N 1 severe | |
Medium twill N 1 plain dyed | |
Weighted twill N 1 severe | |
Weighted plain dyed twill | |
Twill especially light severe | |
Twill light N 2 severe | |
Medium twill N 2 severe | |
Weighted twill N 2 severe |
Notes:
1. It is allowed to use other fabrics, including those made of synthetic fibers, whose physical and mechanical properties are not worse than those indicated.
2. If the fabric does not have an established symbol, it is allowed in symbol skins indicate its article number.
(Changed edition, Rev. N 2).
2.4. The skin should be made from grinding materials with grain sizes indicated in Table 4.
Table 4
Type of abrasive | Electrocorundum | monocorundum |
Sanding material grit |
(Changed edition, Rev. N 1, 2).
2.5. Sanding material must be connected to the base with skin glue according to GOST 3252 or other bonds according to industry normative and technical documentation.
Note. It is allowed to introduce dyes or coloring pigments into the bundle.
2.6. Grain composition of grinding materials - according to GOST 3647.
2.7. (Deleted, Rev. N 2).
2.7.1. On the working surface of the skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a bundle, should not exceed 0.5% of the area of the rolls.
Note. By agreement with the consumer, the total area of these defects is allowed no more than 1% of the roll area.
2.7.2. In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.
2.7.1, 2.7.2. (Changed edition, Rev. N 1, 2).
2.7.3. The requirement for the working surface of the skin with a relief working layer is according to GOST 6456.
2.8. The uneven thickness of the skin should not exceed the values specified in Table 5.
Table 5
Grain | Thickness unevenness, mm, no more |
2.9. The tensile strength and elongation of the skin should correspond to the values indicated in table.6.
Table 6
Fabric symbol | Breaking force N, not less, in directions | Elongation at break in the longitudinal direction, %, no more |
|
longitudinal | transverse | ||
LO, LOG | |||
(Changed edition, Rev. N 2).
2.10. The given wear of the skin should correspond to the values indicated in Table 7.
Table 7
Grain | Reduced wear skin types |
|
2.11. Humidity of the skin should be 2-8%.
2.12. The strength index of fixing abrasive grains of electrocorundum skins (the ratio of the removed material of the reference rod to the mass of the working layer destroyed to the base) must correspond to the values \u200b\u200bspecified in Table 7a.
Table 7a
Grain | mm/g, skin types |
|
(Changed edition, Rev. N 1).
2.13. The coefficient of application of the abrasive material on the basis for the skin with a relief working layer should be 0.35-0.80.
(Introduced additionally, Rev. N 1).
2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values \u200b\u200bspecified in Table 7b.
Table 7b
Grain | Cutting ability of the skin, mm/min, not less than |
Note. The cutting ability of the skin, made from grinding materials grades F14A and F13A, should be 3% higher than indicated in Table 7b.
(Changed edition, Rev. N 2).
3. ACCEPTANCE RULES
3.1. Acceptance inspection and periodic testing should be carried out to verify that the pelt conforms to the requirements of this standard.
3.2. Acceptance control for compliance with the requirements of paragraphs 1.2, 2.7.1-2.7.3 should be subjected to at least 1% of the rolls of skins from the batch, but not less than 3 pieces, according to paragraphs 1.4, 1.5, 2.10; 2.12 and 2.14 - 0.1%, but not less than 3 pcs.
3.1, 3.2. (Changed edition, Rev. N 1).
3.2.1. The batch must consist of skins of the same characteristics, made in one shift and simultaneously presented for acceptance according to one document.
3.3. If, during the acceptance control, non-compliance with the requirements of the standard for more than one controlled indicator is established, then the lot is not accepted.
(Changed edition, Rev. N 1).
3.3.1. If a non-compliance with the requirements of the standard is established for one of the controlled indicators, then a second control is carried out on a doubled number of skin rolls.
If there are defects in the resampling, the lot is not accepted.
(Introduced additionally, Rev. N 1).
3.4. Products (one of the sizes of rolls) that have passed the acceptance control (according to clause 3.2) should be subjected to periodic tests for compliance with the requirements of clauses 2.8 and 2.13 - 0.5% of rolls, but not less than 3 pcs., clauses 2.9 and 2.11 - 0.5% of rolls of skins with grain sizes 80, 40, 8, 5 and M40, but not less than 3 pieces, item 2.9 - skins based on all types.
(Changed edition, Rev. N 1).
3.5. Periodic tests should be carried out at least once a year.
(Changed edition, Rev. N 2).
4. CONTROL AND TEST METHODS
4.1. The reduced wear of the skin (the ratio of the granularity of the skin to its shedding) is determined on the KZSH VNIIASH device by rubbing the skin against the skin for 2 minutes at a force of 49 N.
(Changed edition, Rev. N 1).
4.1.1. Other test conditions - according to GOST 6456.
4.2. Determination of tensile strength and elongation of the skin is carried out according to GOST 3813, except for clause 1.2, at a temperature environment. For testing, samples are taken with a working size of 50X200 mm.
The elongation is controlled at the breaking force values provided in Table 6.
(Changed edition, Rev. N 1, 2).
4.3. The determination of the cutting ability and strength indicators of fixing abrasive grains of electrocorundum skins are given in Appendix 2; determination of the cutting ability of flint skins - according to GOST 6456.
4.4. Dimensions and appearance working surface, thickness unevenness and humidity are determined according to GOST 6456.
(Changed edition, Rev. N 1).
4.5. Samples for control according to paragraphs 4.1-4.4 are taken from any place on the roll, at least 10 mm away from the end of the roll or edges. The value of the indicators according to paragraphs 4.1, 4.2, unevenness of thickness and humidity is calculated as the arithmetic mean of the results of three determinations.
4.6. The calculation of the coefficient of application of the grinding material on the base is given in Appendix 3.
(Introduced additionally, Rev. N 1).
5. MARKING, PACKAGING, TRANSPORT AND STORAGE
5.1. On the non-working surface of the skin roll, every (235 ± 20) mm in the longitudinal and every (200 ± 20) mm in the transverse directions should be applied:
- symbol (except for type);
- lot number.
Notes:
1. When using a mixture of grinding materials, the brand of the main grinding material should be marked in the symbol, when using a mixture of grain sizes - the main grain size.
2. By agreement with the consumer, the dimensions of the roll may not be applied.
(Changed edition, Rev. N 1, 2).
5.2. Link markings:
- skin glue - M;
- combined ligament - K.
5.3. The winding of the skins into rolls should be even and dense working layer outside, not allowing the formation of wrinkles, folds and crumpled places.
The end surface of the roll must be even, the protrusions of the edges of the roll with a width of up to 830 mm should not exceed 20 mm, with a width of more than 830 mm - 30 mm.
(Changed edition, Rev. N 2).
5.4. Each skin roll must be wrapped with a double layer of paper in accordance with GOST 18277, GOST 2228 or GOST 10127.
The roll must be sealed at the joint. The layers of wrapping paper should cover the ends of the roll and ensure its safety during transportation.
5.5. (Deleted, Rev. N 2).
5.6. Each packaged roll must be labeled or stamped with the following data:
- trademark manufacturer;
- symbol;
- release date and batch number;
- stamp of technical control.
5.7-5.16. (Excluded, Rev. N 2).
5.17. The remaining requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.
(Introduced additionally, Rev. N 2).
Section 6. (Excluded, Rev. N 1).
APPENDIX 1. (Deleted, Rev. N 1).
APPENDIX 2 (mandatory). METHOD FOR DETERMINING THE CUTTING CAPABILITY AND THE FIXING STRENGTH OF ABRASIVE GRAINS
APPENDIX 2
Mandatory
1. Equipment and materials
1.1. Device for testing PSSH-3.
1.2. Technical scales with a weighing error of not more than 0.01 g.
1.3. Skin samples 680 mm long and 20 mm wide.
1.4. A rod made of calibrated steel grade 45 according to GOST 1051 with a diameter of 10 mm and a length of 250-300 mm.
2. Preparation for the test
2.1. Rip and weigh the skin sample.
2.2. A skin sample is fixed on a metal disk with a diameter of 100 mm and a polished rod in a cartridge holder. The rod must be inclined in the direction of rotation of the disc so that the end of the rod after grinding is flat. For this purpose, grinding is carried out with sandpaper of grain size 12 from normal electrocorundum for 15 s at a radial force of 19.6 N, a rod rotation frequency of 36 min, and a grinding speed of 15 m/s.
3. Testing
3.1. To determine the cutting ability of the skin, the rod is ground in the following mode: radial force - 9.8 N, grinding time - 1 min, grinding speed - 15 m/s, rod rotation speed - 36 min.
3.2. The length of the ground section of the rod is measured with a caliper with an error of 0.05 mm.
3.3. To determine the fixing strength index of abrasive grains, the rod is cooled to room temperature or replaced with another one.
3.4. The rod is ground in the mode indicated in the table.
Grain | Grinding speed, m/s | Rod rotation frequency, min | Radial force, N | Cycle duration, s | Durability criterion - minimum metal removal per cycle, mm |
3.5. The test according to paragraphs 3.2-3.4 is repeated until the criterion of skin firmness is reached in accordance with the table.
3.6. Remove and weigh a skin sample.
4. Processing of results
4.1. Cutting capacity, mm/min, is determined by the formula
where is the length of the ground reference rod for the first grinding cycle, mm;
Grinding time equal to 1 min.
4.2. The fixing strength index, mm/g, of the abrasive grains of the skin is determined by the formula
where is the length of the ground reference rod, mm;
- the number of cycles until the durability criterion is reached;
- difference between the masses of the sandpaper sample before and after the test, g.
4.3. The cutting power and the holding strength index of the abrasive grains are determined as the arithmetic mean of the results of the three tests.
APPENDIX 3 (mandatory). CALCULATION OF THE COEFFICIENT OF APPLICATION OF GRINDING MATERIAL ON THE BASIS
APPENDIX 3
Mandatory
The coefficient of application of the abrasive material on the base (the ratio of the area of the base with the applied abrasive material to its total area) is calculated by the formulas:
- for version 1
where is the maximum relief width, mm;
- maximum relief step, mm;
- for version 2
For version 3
For version 4
where is the minimum relief width, mm;
- minimum relief step, mm.
(Introduced additionally, Rev. N 1).
Electronic text of the document
prepared by CJSC "Kodeks" and checked against:
official publication
Moscow: IPK Standards Publishing House, 2002
INTERSTATE STANDARD
TECHNICAL CONDITIONS
Official edition
IPK PUBLISHING STANDARDS Moscow
UDC 621.921.6.024:006.354
Group G25
INTERSTATE STANDARD
SCANDING FABRIC AND PAPER SKIN
Specifications
Abrasive cloth. Specifications
Date of introduction 01.01.83
This standard applies to cloth abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, mineral spirits.
1. TYPES AND DIMENSIONS
1.1. The skin should be made of types:
1 - for machine processing of non-metallic materials, metals and alloys of low hardness and manual processing of various materials;
2 - for machine and manual processing of hard and highly viscous materials.
1.2. The skin should be produced in rolls, the dimensions of which are indicated in Table. one.
Table 1
* For widths up to 830 mm grit 63-32 and widths over 830 mm grit 32-12.
** For widths up to 830 mm, grit less than 32 and widths over 830 mm, grit less than 12.
Note. At the request of the consumer, it is allowed to manufacture rolls of other sizes.
1.3. The skin should be made with the following types of working layer:
C - solid;
R - embossed.
1.4. The designs and dimensions of the relief working layer must correspond to those indicated in the drawing and in table. 1a.
Official publication Reprint prohibited
© Standards Publishing, 1982 © IPK Standards Publishing, 2002
Version 1
Execution 2
Version 3
Version 4
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Table la Dimensions in mm
1.5. The deviation from parallelism of the generatric lines of the relief must be within the tolerance per step of the relief.
An example of a symbol for a fabric abrasive paper type 2, with a relief working layer, 830 mm wide, 50 m long, on medium twill No. 2 severe, made of white electrocorundum grade 24A, grit 40-H, on skin glue:
2R 830 x 50 C2 24A 40-N M GOST 5009-82
2. TECHNICAL REQUIREMENTS
2.1. Skins shall be manufactured in accordance with the requirements of this standard.
2.2. The skin should be made from the grinding materials indicated in Table. 2.
table 2
Note. At the request of the consumer, it is allowed to manufacture skins from grinding materials of other brands or their mixtures.
(Changed edition, Rev. No. 1, 2).
2.3. For the manufacture of skins, cotton fabrics according to GOST 3357 should be used as a basis in accordance with Table. 3.
Table 3
Notes:
1. It is allowed to use other fabrics, including those made of synthetic fibers, whose physical and mechanical properties are not worse than those indicated.
2. If the fabric does not have an established symbol, it is allowed to indicate its article number in the symbol of the skin.
(Revised edition, Rev. No. 2).
2.4. The skin should be made from grinding materials of the grain sizes indicated in Table. 4.
Table 4
(Changed edition, Rev. No. 1, 2).
2.5. Sanding material must be connected to the base with skin glue according to GOST 3252 or other bonds according to industry normative and technical documentation.
Note. It is allowed to introduce dyes or coloring pigments into the bundle.
2.6. Grain composition of grinding materials - according to GOST 3647.
2.7. (Deleted, Rev. No. 2).
2.7.1. On the working surface of the skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a bundle, should not exceed 0.5% of the area of the rolls.
Note. By agreement with the consumer, the total area of these defects is allowed no more than 1% of the roll area.
2.7.2. In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.
2.7.1, 2.7.2. (Changed edition, Rev. No. 1, 2).
2.7.3. The requirement for the working surface of the skin with a relief working layer is in accordance with GOST 6456.
2.8. The unevenness of the thickness of the skin should not exceed the values \u200b\u200bspecified in Table 5.
Table 5
2.9. The tensile strength and elongation of the skin should correspond to the values \u200b\u200bspecified in table. 6.
Table 6
(Revised edition, Rev. No. 2).
2.10. The given wear of the skin should correspond to the values \u200b\u200bspecified in Table. 7.
Table 7
2.13. The coefficient of application of the abrasive material on the basis for the skin with a relief working layer should be 0.35-0.80.
(Introduced additionally, Rev. No. 1).
2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values \u200b\u200bspecified in Table. 76.
Table 76
|
Grain |
Grain |
Cutting ability of the skin, mm 3 / min, not less |
|
Note. The cutting ability of the skin, made of grinding materials grades F14A and F13A, should be 3% higher than indicated in Table. 76.
(Revised edition, Rev. No. 2).
3. ACCEPTANCE RULES
3.1. Acceptance inspection and periodic testing should be carried out to verify that the pelt conforms to the requirements of this standard.
3.2. Acceptance control for compliance with the requirements of paragraphs. 1.2, 2.7.1-2.7.3 must subject at least 1% of the rolls of skins from the batch, but at least 3 pieces, according to paragraphs. 1.4, 1.5, 2.10, 2.12 and 2.14 - 0.1%, but not less than 3 pcs.
3.1. 3.2. (Revised edition, Rev. No. 1).
3.2.1. The batch must consist of skins of the same characteristics, made in one shift and simultaneously presented for acceptance according to one document.
3.3. If, during the acceptance control, non-compliance with the requirements of the standard for more than one controlled indicator is established, then the lot is not accepted.
(Revised edition, Rev. No. 1).
3.3.1. If a non-compliance with the requirements of the standard is established for one of the controlled indicators, then a second control is carried out on a doubled number of skin rolls.
If there are defects in the resampling, the lot is not accepted.
(Introduced additionally, Rev. No. 1).
3.4. Products (one of the sizes of rolls) that have passed the acceptance control (according to i. 3.2) should be subjected to periodic tests for compliance with the requirements of pi. 2.8 and 2.13 - 0.5% of rolls, but not less than 3 pieces, paragraphs. 2.9 and 2.11 - 0.5% of rolls of skins with grain sizes 80, 40, 8, 5 and M40, but not less than 3 pieces, item 2.9 - skins based on all types.
(Revised edition, Rev. No. 1).
3.5. Periodic tests should be carried out at least once a year.
(Revised edition, Rev. No. 2).
4. CONTROL AND TEST METHODS
4.1. The reduced wear of the skin (the ratio of the granularity of the skin to its shedding) is determined on the KZSH VNIIASH device by rubbing the skin against the skin for 2 minutes at a force of 49 N.
(Revised edition, Rev. No. 1).
4.1.1. Other test conditions - according to GOST 6456.
4.2. Determination of tensile strength and elongation of the skin is carried out according to GOST 3813, except for and. 1.2, at ambient temperature. For testing, samples are taken with a working size of 50 x 200 mm.
The elongation is controlled at the values of the breaking force provided in Table. 6.
(Changed edition, Rev. No. 1, 2).
4.3. The determination of the cutting ability and strength indicators of fixing abrasive grains of electrocorundum skins are given in Appendix 2; determination of the cutting ability of flint skins - according to GOST 6456.
4.4. The dimensions and appearance of the working surface, uneven thickness and humidity are determined according to GOST 6456.
(Revised edition, Rev. No. 1).
4.5. Samples for control according to paragraphs. 4.1-4.4 are taken from any place of the roll, remote from the end of the roll or edges not less than 10 mm. The value of the indicators according to paragraphs. 4.1, 4.2, thickness and moisture irregularities are calculated as the arithmetic mean of the results of three determinations.
4.6. The calculation of the coefficient of application of the grinding material on the basis of K n is given in Appendix 3.
(Introduced additionally, Rev. No. 1).
5. MARKING, PACKAGING, TRANSPORT AND STORAGE
5.1. On the non-working surface of the skin roll, every (235+20) mm in the longitudinal and every (200+20) mm in the transverse directions should be applied:
Conventional designation (except for type);
Party number.
Notes:
1. When using a mixture of grinding materials, the brand of the main grinding material should be marked in the symbol, when using a mixture of grain sizes - the main grain size.
2. By agreement with the consumer, the dimensions of the roll may not be applied.
(Changed edition, Rev. No. 1, 2).
5.2. Link markings:
Mezdrovy glue - M;
Combined ligament - K.
5.3. The winding of the skins into rolls should be even and dense working layer outside, not allowing the formation of wrinkles, folds and crumpled places.
The end surface of the roll must be even, the protrusions of the edges of the roll with a width of up to 830 mm should not exceed 20 mm, with a width of more than 830 mm - 30 mm.
(Revised edition, Rev. No. 2).
5.4. Each skin roll must be wrapped with a double layer of paper in accordance with GOST 18277, GOST 2228 or GOST 10127.
The roll must be sealed at the joint. The layers of wrapping paper should cover the ends of the roll and ensure its safety during transportation.
5.5. (Deleted, Rev. No. 2).
5.6. Each packaged roll must be labeled or stamped with the following data:
Trademark of the manufacturer;
Symbol;
Release date and batch number;
Technical control stamp.
5.7-5.16. (Deleted, Rev. No. 2).
5.17. Other requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.
(Introduced additionally, Amendment No. 2).
Sec. 6. (Deleted, Rev. No. 1).
APPENDIX 7. (Deleted, Rev. No. 1).
APPENDIX 2 Mandatory
METHOD FOR DETERMINING THE CUTTING CAPABILITY AND THE FIXING STRENGTH OF ABRASIVE GRAINS
1. Equipment and materials
1.1. Device for testing PSSH-3.
1.2. Technical scales with a weighing error of not more than 0.01 g.
1.3. Skin samples 680 mm long and 20 mm wide.
1.4. A rod made of calibrated steel grade 45 according to GOST 1051 with a diameter of 10 mm and a length of 250-300 mm.
2. Preparation for the test
2.1. Rip and weigh the skin sample.
2.2. A skin sample is fixed on a metal disk with a diameter of 100 mm and a polished rod in a cartridge holder. The rod must be inclined in the direction of rotation of the disc so that the end of the rod after grinding is flat. For this purpose, grinding is performed with a sandpaper of grain size 12 from normal electrocorundum for 15 s at a radial force of 19.6 N, a rod rotation frequency of 36 min -1 , a grinding speed of 15 m/s.
3. Testing
3.1. To determine the cutting ability of the skin, the rod is ground in the following mode: radial force - 9.8 N, grinding time - 1 min, grinding speed - 15 m/s, rod rotation speed - 36 min -1 .
3.2. The length of the ground section of the rod is measured with a caliper with an error of 0.05 mm.
3.3. To determine the fixing strength index of abrasive grains, the rod is cooled to room temperature or replaced with another one.
3.4. The rod is ground in the mode indicated in the table.
3.5. Pi test. 3.2-3.4 are repeated until the skin resistance criterion is reached in accordance with the table.
3.6. Remove and weigh a skin sample.
4. Processing of results
4.1. Cutting ability Q, mm 3 / min, is determined by the formula
where<У| - длина сошлифованного эталонного стержня за первый цикл шлифования, мм; t - время шлифования, равное 1 мин.
4.2. The fixing strength index K, mm/g, of abrasive grains of the skin is determined by the formula
where q, is the length of the ground reference rod, mm;
n is the number of cycles until the durability criterion is reached;
A is the difference in the masses of the sandpaper sample before and after the test, g.
4.3. The cutting power and the holding strength index of the abrasive grains are determined as the arithmetic mean of the results of the three tests.
APPENDIX 3 Mandatory
CALCULATION OF THE COEFFICIENT OF APPLICATION OF GRINDING MATERIAL ON THE BASIS
The coefficient of application of abrasive material on the base K and (the ratio of the area of the base with the applied abrasive material to its total area) is calculated by the formulas:
For version 1
Fpah Ap ah
where a max is the maximum width of the relief, mm, / max is the maximum step of the relief, mm;
For performance 2
Maxlh/2'
For version 3
: C, ax ^max)
For version 4
where a min - minimum relief width, mm; Ashp - minimum relief step, mm.
(Introduced additionally, Amendment No. 1).
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR
2. APPROVED AND INTRODUCED BY Decree State Committee USSR according to the standards of February 18, 1982 No. 735
3. REPLACE GOST 5009-75
4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
|
Item number, applications |
Item number, applications |
||
|
GOST 1051-73 |
Appendix 2 |
GOST 6456-82 |
2.7.3, 4.1.1, 4.3, 4.4 |
|
GOST 2228-81 |
GOST 10127-75 | ||
|
GOST 3252-80 |
GOST 15102-75 | ||
|
GOST 3357-72 |
GOST 18277-90 | ||
|
GOST 3647-80 |
GOST 27595-88 | ||
|
GOST 3813-72 |
5. The limitation of the validity period was removed according to protocol No. 3-93 of the Interstate Council for Standardization, Metrology and Certification (NUS 5-6-93)
6. EDITION (November 2001) with Amendments No. 1, 2, approved in April 1987, July 1989 (IUS 8-87, 11-89)
Editor V.P. Ogurtsov Technical editor N.S. Grishanova Proofreader N.L. Rybalko Computer layout O.V. Arseeva
Ed. persons. No. 02354 dated 07/14/2000. Handed over to the set 12/10/2001. Signed for publication on December 26, 2001. Uel. oven l. 1.40. Uch.-ed.l. 0.97.
Circulation 127 copies. From 3253. Law. 1168.
IPK Publishing house of standards, 107076, Moscow, Kolodezny per., 14. e-mail: Typed and printed in the IPK Publishing house of standards
- Section 6 (deleted) Appendix 1. (deleted) Appendix 2 (mandatory). Method for determining the cutting ability and index of the strength of fixing abrasive grains Appendix 3 (mandatory). Calculation of the coefficient of application of abrasive material on the base
Interstate standard GOST 5009-82
"Grinding cloth and paper skin. Specifications"
(approved by the resolution of the State Standard of the USSR of February 18, 1982 N 735)
Abrasive cloth. Specifications
Instead of GOST 5009-75
This standard applies to cloth abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, mineral spirits.
1. Types and sizes
1.1. The skin should be made of types:
1 - for machine processing of non-metallic materials, metals and alloys of low hardness and manual processing of various materials;
2 - for machine and manual processing of hard and highly viscous materials.
1.2. The skin should be produced in rolls, the dimensions of which are indicated in Table. one.
Table 1
|
Width, mm |
||
|
Previous off |
||
|
725, 740, 770, 800, 830 |
||
Table 1a
Dimensions in mm
|
Grain |
||||||||
|
Interval |
Previous off |
Interval |
Previous off |
Interval |
Previous off |
Interval |
Previous off |
|
1.5. The deviation from parallelism of the generatric lines of the relief must be within the tolerance per step of the relief.
An example of a symbol for a cloth abrasive paper type 2, with an embossed working layer, 830 mm wide, 50 m long, on medium twill N 2 severe, made of white electrocorundum grade 24A, grit size 40-H, on skin glue:
2R 830x50 C2 24A 40-N M GOST 5009-82
2. Technical requirements
2.1. Skins shall be manufactured in accordance with the requirements of this standard.
2.2. The skin should be made from the grinding materials indicated in Table. 2.
table 2
|
Type of abrasive |
Grade of sanding material |
Type of abrasive |
Grade of sanding material |
|
Normal electrocorundum |
15A, 14A, F14A, 13A, F13A |
Zirconium electrocorundum |
|
|
White electrocorundum |
25A, 24A, 23A |
monocorundum |
|
|
Alloyed electrocorundum |
94A, 93A, 92A, 91A, 91A-M, 92A-M |
Note. At the request of the consumer, it is allowed to manufacture skins from grinding materials of other brands or their mixtures.
(Changed edition, Rev. N 1, 2).
2.3. For the manufacture of skins, cotton fabrics according to GOST 3357 should be used as a basis in accordance with Table. 3.
Table 3
|
Fabric name |
Symbol |
Fabric name |
Symbol |
|
Extra light plain dyed twill |
Weighted plain dyed twill |
||
|
Twill light N 1 severe |
Twill especially light severe |
||
|
Light twill N 2 plain dyed |
Twill light N 2 severe |
||
|
Medium twill N 1 severe |
Medium twill N 2 severe |
||
|
Medium twill N 1 plain dyed |
Weighted twill N 2 severe |
||
|
Weighted twill N 1 severe |
Notes:
1. It is allowed to use other fabrics, including those made of synthetic fibers, whose physical and mechanical properties are not worse than those indicated.
2. If the fabric does not have an established symbol, it is allowed to indicate its article number in the symbol of the skin.
2.4. The skin should be made from grinding materials of the grain sizes indicated in Table. 4.
Table 4
(Changed edition, Rev. N 1, 2).
2.5. Sanding material must be connected to the base with skin glue according to GOST 3252 or other bonds according to industry normative and technical documentation.
Note. It is allowed to introduce dyes or coloring pigments into the bundle.
2.6. Grain composition of grinding materials - according to GOST 3647.
2.7.(Deleted, Rev. N 2).
2.7.1. On the working surface of the skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a bundle, should not exceed 0.5% of the area of the rolls.
Note. By agreement with the consumer, the total area of these defects is allowed no more than 1% of the roll area.
2.7.2. In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.
2.7.1, 2.7.2. (Changed edition, Rev. N 1, 2).
2.7.3. The requirement for the working surface of the skin with a relief working layer is according to GOST 6456.
2.8. The unevenness of the thickness of the skin should not exceed the values \u200b\u200bspecified in Table 5.
Table 5
|
Grain |
Grain |
Thickness unevenness, mm, no more |
|
2.9. The tensile strength and elongation of the skin should correspond to the values \u200b\u200bspecified in table. 6.
Table 6
|
Fabric symbol |
Breaking force, N, not less, in directions |
Elongation at break in the longitudinal direction,%, no more |
|
|
longitudinal |
transverse |
||
(Changed edition, Rev. N 2).
2.10. The given wear of the skin should correspond to the values \u200b\u200bspecified in Table. 7.
Table 7
|
Grain |
Reduced wear skin types |
|
2.11. Humidity of the skin should be 2-8%.
2.12. The strength index of fixing abrasive grains of electrocorundum skin K (the ratio of the removed material of the reference rod to the mass of the working layer destroyed to the base) must correspond to the values \u200b\u200bspecified in Table. 7a.
Table 7a
|
Grain |
K, mm/g, skin types |
|
(Changed edition, Rev. N 1).
2.13. The coefficient of application of the abrasive material on the basis for the skin with a relief working layer should be 0.35-0.80.
(Introduced additionally, Rev. N 1).
2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values \u200b\u200bspecified in Table. 7b.
Table 7b
|
Grain |
Grain |
Cutting ability of the skin, , not less than |
|
Grinding fabric skin, GOST 5009-82
Engineering. GOST 5009-82: Grinding fabric skin. Specifications. OKS: Mechanical engineering, Cutting tools. GOSTs. Grinding fabric skin. Specifications. class=text>
GOST 5009-82
Grinding fabric skin. Specifications
GOST 5009-82
Group G25
INTERSTATE STANDARD
SCANDING FABRIC AND PAPER SKIN
Specifications
Abrasive cloth. Specifications
OKP 39 8500
Introduction date 1983-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR
2. APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Standards dated February 18, 1982 N 735
3. REPLACE GOST 5009-75
4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
Item number, applications |
|
GOST 1051-73 | Appendix 2 |
GOST 2228-81 | |
GOST 3252-80 | |
GOST 3357-72 | |
GOST 3647-80 | |
GOST 3813-72 | |
GOST 6456-82 | 2.7.3, 4.1.1, 4.3, 4.4 |
GOST 10127-75 | |
GOST 15102-75 | |
GOST 18277-90 | |
GOST 27595-88 |
5. The limitation of the validity period was removed according to protocol N 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)
6. EDITION (November 2001) with Amendments No. 1, 2, approved in April 1987, July 1989 (IUS 8-87, 11-89)
This standard applies to cloth abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, mineral spirits.
1. TYPES AND DIMENSIONS
1. TYPES AND DIMENSIONS
1.1. The skin should be made of types:
1 - for machine processing of non-metallic materials, metals and alloys of low hardness and manual processing of various materials;
2 - for machine and manual processing of hard and highly viscous materials.
1.2. The skin should be produced in rolls, the dimensions of which are indicated in Table 1.
Table 1
____________
* For widths up to 830 mm grit 63-32 and widths over 830 mm grit 32-12.
** For widths up to 830 mm, grit less than 32 and widths over 830 mm, grit less than 12.
Note. At the request of the consumer, it is allowed to manufacture rolls of other sizes.
1.3. The skin should be made with the following types of working layer:
C - solid;
R - embossed.
1.4. The designs and dimensions of the relief working layer must correspond to those indicated in the drawing and in Table 1a.
Table 1a
Dimensions in mm
Grain | ||||||||
Interval | Previous off | Interval | Previous off | Interval | Previous off | Interval | Previous off |
|
1.5. The deviation from parallelism of the generatric lines of the relief must be within the tolerance per step of the relief.
An example of a symbol for a cloth abrasive paper type 2, with an embossed working layer 830 mm wide, 50 m long, on medium twill N 2 severe, made of white electrocorundum grade 24A, grit 40-H, on skin glue:
2P 83050 S2 24A 40-N M GOST 5009-82
2. TECHNICAL REQUIREMENTS
2.1. Skins shall be manufactured in accordance with the requirements of this standard.
2.2. The skin should be made from grinding materials listed in Table 2.
table 2
Note. At the request of the consumer, it is allowed to manufacture skins from grinding materials of other brands or their mixtures.
(Changed edition, Rev. N 1, 2).
2.3. For the manufacture of skins, cotton fabrics according to GOST 3357 should be used as a basis in accordance with Table 3.
Table 3
Fabric name | Symbol |
Extra light plain dyed twill | |
Twill light N 1 severe | |
Light twill N 2 plain dyed | |
Medium twill N 1 severe | |
Medium twill N 1 plain dyed | |
Weighted twill N 1 severe | |
Weighted plain dyed twill | |
Twill especially light severe | |
Twill light N 2 severe | |
Medium twill N 2 severe | |
Weighted twill N 2 severe |
Notes:
1. It is allowed to use other fabrics, including those made of synthetic fibers, whose physical and mechanical properties are not worse than those indicated.
2. If the fabric does not have an established symbol, it is allowed to indicate its article number in the symbol of the skin.
(Changed edition, Rev. N 2).
2.4. The skin should be made from grinding materials with grain sizes indicated in Table 4.
Table 4
(Changed edition, Rev. N 1, 2).
2.5. Sanding material must be connected to the base with skin glue according to GOST 3252 or other bonds according to industry normative and technical documentation.
Note. It is allowed to introduce dyes or coloring pigments into the bundle.
2.6. Grain composition of grinding materials - according to GOST 3647.
2.7. (Deleted, Rev. N 2).
2.7.1. On the working surface of the skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a bundle, should not exceed 0.5% of the area of the rolls.
Note. By agreement with the consumer, the total area of these defects is allowed no more than 1% of the roll area.
2.7.2. In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.
2.7.1, 2.7.2. (Changed edition, Rev. N 1, 2).
2.7.3. The requirement for the working surface of the skin with a relief working layer is in accordance with GOST 6456.
2.8. The uneven thickness of the skin should not exceed the values specified in Table 5.
Table 5
2.9. The tensile strength and elongation of the skin should correspond to the values indicated in table.6.
Table 6
Fabric symbol | Breaking force N, not less, in directions | Elongation at break in the longitudinal direction, %, no more |
|
longitudinal | transverse | ||
LO, LOG | |||
(Changed edition, Rev. N 2).
2.10. The given wear of the skin should correspond to the values indicated in Table 7.
Table 7
Grain | Reduced wear skin types |
|
2.11. Humidity of the skin should be 2-8%.
2.12. The strength index of fixing abrasive grains of electrocorundum skins (the ratio of the removed material of the reference rod to the mass of the working layer destroyed to the base) must correspond to the values \u200b\u200bspecified in Table 7a.
Table 7a
Grain | mm/g, skin types |
|
(Changed edition, Rev. N 1).
2.13. The coefficient of application of the abrasive material on the basis for the skin with a relief working layer should be 0.35-0.80.
(Introduced additionally, Rev. N 1).
2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values \u200b\u200bspecified in Table 7b.
Table 7b
Grain | Cutting ability of the skin, mm/min, not less than |
Note. The cutting ability of the skin, made from grinding materials grades F14A and F13A, should be 3% higher than indicated in Table 7b.
(Changed edition, Rev. N 2).
3. ACCEPTANCE RULES
3.1. Acceptance inspection and periodic testing should be carried out to verify that the pelt conforms to the requirements of this standard.
3.2. Acceptance control for compliance with the requirements of paragraphs 1.2, 2.7.1-2.7.3 should be subjected to at least 1% of the rolls of skins from the batch, but not less than 3 pieces, according to paragraphs 1.4, 1.5, 2.10; 2.12 and 2.14 - 0.1%, but not less than 3 pcs.
3.1, 3.2. (Changed edition, Rev. N 1).
3.2.1. The batch must consist of skins of the same characteristics, made in one shift and simultaneously presented for acceptance according to one document.
3.3. If, during the acceptance control, non-compliance with the requirements of the standard for more than one controlled indicator is established, then the lot is not accepted.
(Changed edition, Rev. N 1).
3.3.1. If a non-compliance with the requirements of the standard is established for one of the controlled indicators, then a second control is carried out on a doubled number of skin rolls.
If there are defects in the resampling, the lot is not accepted.
(Introduced additionally, Rev. N 1).
3.4. Products (one of the sizes of rolls) that have passed the acceptance control (according to clause 3.2) should be subjected to periodic tests for compliance with the requirements of clauses 2.8 and 2.13 - 0.5% of rolls, but not less than 3 pcs., clauses 2.9 and 2.11 - 0.5% of rolls of skins with grain sizes 80, 40, 8, 5 and M40, but not less than 3 pieces, item 2.9 - skins based on all types.
(Changed edition, Rev. N 1).
3.5. Periodic tests should be carried out at least once a year.
(Changed edition, Rev. N 2).
4. CONTROL AND TEST METHODS
4.1. The reduced wear of the skin (the ratio of the granularity of the skin to its shedding) is determined on the KZSH VNIIASH device by rubbing the skin against the skin for 2 minutes at a force of 49 N.
(Changed edition, Rev. N 1).
4.1.1. Other test conditions - according to GOST 6456.
4.2. Determination of tensile strength and skin elongation is carried out according to GOST 3813, except for clause 1.2, at ambient temperature. For testing, samples are taken with a working size of 50X200 mm.
The elongation is controlled at the breaking force values provided in Table 6.
(Changed edition, Rev. N 1, 2).
4.3. The determination of the cutting ability and strength indicators of fixing abrasive grains of electrocorundum skins are given in Appendix 2; determination of the cutting ability of flint skins - according to GOST 6456.
4.4. The dimensions and appearance of the working surface, uneven thickness and humidity are determined according to GOST 6456.
(Changed edition, Rev. N 1).
4.5. Samples for control according to paragraphs 4.1-4.4 are taken from any place on the roll, at least 10 mm away from the end of the roll or edges. The value of the indicators according to paragraphs 4.1, 4.2, unevenness of thickness and humidity is calculated as the arithmetic mean of the results of three determinations.
4.6. The calculation of the coefficient of application of the grinding material on the base is given in Appendix 3.
(Introduced additionally, Rev. N 1).
5. MARKING, PACKAGING, TRANSPORT AND STORAGE
5.1. On the non-working surface of the skin roll, every (235 ± 20) mm in the longitudinal and every (200 ± 20) mm in the transverse directions should be applied:
- symbol (except for type);
- lot number.
Notes:
1. When using a mixture of grinding materials, the brand of the main grinding material should be marked in the symbol, when using a mixture of grain sizes - the main grain size.
2. By agreement with the consumer, the dimensions of the roll may not be applied.
(Changed edition, Rev. N 1, 2).
5.2. Link markings:
- skin glue - M;
- combined ligament - K.
5.3. The winding of the skins into rolls should be even and dense working layer outside, not allowing the formation of wrinkles, folds and crumpled places.
The end surface of the roll must be even, the protrusions of the edges of the roll with a width of up to 830 mm should not exceed 20 mm, with a width of more than 830 mm - 30 mm.
(Changed edition, Rev. N 2).
5.4. Each skin roll must be wrapped with a double layer of paper in accordance with GOST 18277, GOST 2228 or GOST 10127.
The roll must be sealed at the joint. The layers of wrapping paper should cover the ends of the roll and ensure its safety during transportation.
5.5. (Deleted, Rev. N 2).
5.6. Each packaged roll must be labeled or stamped with the following data:
- trademark of the manufacturer;
- symbol;
- release date and batch number;
- stamp of technical control.
5.7-5.16. (Excluded, Rev. N 2).
5.17. Other requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.
(Introduced additionally, Rev. N 2).
Section 6. (Excluded, Rev. N 1).
APPENDIX 1. (Deleted, Rev. N 1).
APPENDIX 2 (mandatory). METHOD FOR DETERMINING THE CUTTING CAPABILITY AND THE FIXING STRENGTH OF ABRASIVE GRAINS
APPENDIX 2
Mandatory
1. Equipment and materials
1.1. Device for testing PSSH-3.
1.2. Technical scales with a weighing error of not more than 0.01 g.
1.3. Skin samples 680 mm long and 20 mm wide.
1.4. A rod made of calibrated steel grade 45 according to GOST 1051 with a diameter of 10 mm and a length of 250-300 mm.
2. Preparation for the test
2.1. Rip and weigh the skin sample.
2.2. A skin sample is fixed on a metal disk with a diameter of 100 mm and a polished rod in a cartridge holder. The rod must be inclined in the direction of rotation of the disc so that the end of the rod after grinding is flat. For this purpose, grinding is carried out with sandpaper of grain size 12 from normal electrocorundum for 15 s at a radial force of 19.6 N, a rod rotation frequency of 36 min, and a grinding speed of 15 m/s.
3. Testing
3.1. To determine the cutting ability of the skin, the rod is ground in the following mode: radial force - 9.8 N, grinding time - 1 min, grinding speed - 15 m/s, rod rotation speed - 36 min.
3.2. The length of the ground section of the rod is measured with a caliper with an error of 0.05 mm.
3.3. To determine the fixing strength index of abrasive grains, the rod is cooled to room temperature or replaced with another one.
3.4. The rod is ground in the mode indicated in the table.
Grain | Grinding speed, m/s | Rod rotation frequency, min | Radial force, N | Cycle duration, s | Durability criterion - minimum metal removal per cycle, mm |
3.5. The test according to paragraphs 3.2-3.4 is repeated until the criterion of skin firmness is reached in accordance with the table.
3.6. Remove and weigh a skin sample.
4. Processing of results
4.1. Cutting capacity, mm/min, is determined by the formula
where is the length of the ground reference rod for the first grinding cycle, mm;
- grinding time equal to 1 min.
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STATE STANDARD
SCANDING FABRIC AND PAPER SKIN
TECHNICAL CONDITIONS
Official edition
INK STANDARDS PUBLISHING HOUSE Moscow
INTERSTATE STANDARD
SKIN GRINDING FABRIC
AND PAPER GOST
„ 5009-82
Specifications
Abrasive cloth. Specifications
Yes ha introduction 01.01.83
This standard applies to cloth abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, mineral spirits.
I. TYPES AND DIMENSIONS
1.1. The skin should be made of types:
1 - for machine processing of non-metallic materials, metals and alloys of low hardness and manual processing of raw materials:
2 - for machine and manual processing of hard and highly viscous materials.
1.2. The skin should be produced in rolls, the dimensions of which are indicated in Table. I.
For widths up to 830 mm in grit 63-32 and widths over 830 mm in grit 32-12.
** Day widths up to 830 mm grit less than 32 and widths over 830 mm grit less than 12.
P and m with ch and n and with. At the request of the consumer, it is allowed to manufacture rolls of other sizes.
1.3. The skin should be made with the following working layer forks:
C - solid:
R - embossed.
John official ★
1.4. The designs and dimensions of the relief working layer must correspond to those indicated in the drawing and in table. 1a.
Reprint prohibited
© Standards Publishing House. 1982 © IPK Standards Publishing House. 2002
|
Table 1a Dimensions in mm |
|||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||
1.5. The deviation from parallelism of the generatric lines of the relief must be within the tolerance per step of the relief.
An example of a symbol for a type 2 cloth abrasive paper with a relief working layer, 830 mm wide, 50 m long, on medium twill No. 2 severe, made of white electrocorundum grade 24A, grit 40-H, on skin glue:
2.7. (Deleted, Rev. No. 2).
2.7.1. On the working surface of the skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a bundle, should not exceed 0.5% of the area of the rolls.
Note. By agreement with the consumer, the total area of the indicated defects is allowed not more than I% of the area of the roll.
2.7.2. In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.
2.7.1, 2.7.2. (Revised edition, Rev. No. I, 2).
2.7.3. The requirement for the working surface of the skin with a relief working layer is according to GOST 6456.
2.8. The unevenness of the thickness of the skin should not exceed the values \u200b\u200bspecified in Table 5.
2.9. The tensile strength and elongation of the skin should correspond to the values \u200b\u200bspecified in table. 6.
|
Table 6 |
|||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
(Revised edition, Rev. No. 2).
2.10. The given wear of the skin should correspond to the values \u200b\u200bspecified in Table. 7.
|
Table 7 |
||||||||||||
|
||||||||||||
2.11. The humidity of the skin should be 2-8%.
2.12. The strength index of fixing abrasive grains of electrocorundum skin K (the ratio of the removed material of the reference rod to the mass of the working layer destroyed to the base) must correspond to the values \u200b\u200bspecified in Table. 7a.
|
Tableia 7a |
|||||||||||||||||||
|
|||||||||||||||||||
(Changed edition. Rev. No. 1).
2.13. The coefficient of application of the abrasive material on the basis for the skin with a relief working layer should be 0.35-0.80.
(Introduced additionally, Rev. No. 1).
2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values \u200b\u200bspecified in Table. 76.
|
Tableia 76 |
||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||
|
Note. Cutting ability of skins made from grinding mats of grades F14A and F13A. should be 3% higher than indicated in the table. 76. |
(Revised edition, Rev. No. 2).
3. ACCEPTANCE RULES
3.1. Acceptance inspections and periodic tests should be carried out to control the conformity of the pelt with the requirements of this standard.
3.2. Acceptance control for compliance with the requirements of paragraphs. 1.2, 2.7.1-2.7.3 must subject at least I % of the rolls of skins from the lot, but not less than 3 pieces, pi. 1.4, 1.5, 2.10, 2.12 and 2.14 -
0.1%, but not less than 3 pcs.
3.1. 3.2. (Revised edition, Rev. No. I).
3.2.1. The batch must consist of skins of the same characteristics, made in one shift and simultaneously presented for acceptance according to one document.
3.3. If, during the acceptance control, a non-compliance with the requirements of the standard is established for more than one controlled indicator, then the batch is not accepted.
3.3.1. If a non-compliance with the requirements of the standard is established for one of the controlled indicators, then a second control is carried out on a doubled number of skin rolls.
If there are defects in the resampling, the lot is not accepted.
(Introduced additionally, Rev. No. 1).
3.4. Products (one of the sizes of rolls) that have passed the acceptance control (according to clause 3.2) should be subjected to periodic tests. for compliance with the requirements of 2.8 and 2.13 - 0.5% of rolls, but not less than 3 pcs. 2.9 and 2.11 - 0.5% of skin rolls with grain sizes 80. 40. 8, 5 and M40. but not less than 3 pcs., item 2.9 - skin on the basis of all types.
(Revised edition, Rev. No. 1).
3.5. Periodic tests should be carried out at least once a year.
(Changed edition. Rev. No. 2).
4. CONTROL AND TEST METHODS
4.1. The reduced wear of the skin (the ratio of the granularity of the skin to its shedding) is determined on the KZSH VNIIASH device by rubbing the skin against the skin for 2 minutes at a force of 49 N.
(Revised edition, Rev. No. 1).
4.1.1. Other test conditions - according to GOST 6456.
4.2. Determination of tensile strength and skin elongation is carried out according to GOST 3813, except for clause 1.2, at ambient temperature. For testing, samples are taken with a working size of 50 x 200 mm.
The elongation is controlled at the values of the breaking force provided in Table. 6.
(Changed edition. Rev. No. 1, 2).
4.3. The determination of the cutting ability and strength indicators of fixing abrasive grains of electrocorundum skins are given in Appendix 2; determination of the cutting ability of flint skins - according to GOST 6456.
4.4. The dimensions and appearance of the working surface, uneven thickness and humidity are determined according to GOST 6456.
(Revised edition, Rev. No. I).
4.5. Samples for control according to paragraphs. 4.1-4.4 are taken from any place of the roll, remote from the end of the roll or edges not less than K) mm. The value of the indicators according to paragraphs. 4.1, 4.2, thickness and moisture irregularities are calculated as the arithmetic mean of the results of three determinations.
4.6. The calculation of the coefficient of application of the grinding material on the basis of AG I is given in Appendix 3.
(Introduced additionally. Amendment No. I).
5. MARKING, PACKAGING, TRANSPORT AND STORAGE
5.1. On the non-working surface of the skin roll, every (235 ± 20) mm in the longitudinal and every (200 ± 20) mm in the transverse directions should be applied:
Trademark of the manufacturer:
Conventional designation (except for type);
Party number.
Notes:
1. When using a mixture of grinding material, the brand of the main grinding material should be marked in the symbol. when using a mixture of grain sizes - the main grain size.
2. By agreement with the consumer, the dimensions of the roll may not be applied.
(Changed edition, Rev. No. 1, 2).
5.2. Link markings:
Mezdrovy glue - M;
Combined ligament - K.
5.3. The winding of the skin into rolls must be even and dense working layer outward, not allowing the formation of wrinkles, folds and crumpled places.
The end surface of the roll must be even, the protrusions of the edges of the roll with a width of up to 830 mm should not exceed 20 mm, with a width of more than 830 mm - 30 mm.
(Revised edition, Rev. No. 2).
5.4. Each roll of the skin must be wrapped in a double layer of paper in accordance with GOST 18277. GOST 2228 or GOST 10127.
The roll must be sealed at the joint. Elephant wrapping paper should close the ends of the roll and ensure its safety during transportation.
5.5. (Deleted, Rev. No. 2).
5.6. Each packaged roll must be labeled or stamped with the following data:
Trademark of the manufacturer;
Symbol;
Release date and batch number;
Technical control stamp.
5.7-5.16. (Deleted, Rev. No. 2).
5.17. The remaining requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.
(Introduced additionally. Amendment No. 2).
Sec. 6. (Deleted, Rev. No. 1).
APPENDIX I. (Deleted, Rev. No. 1).
APPENDIX 2 Mandatory
METHOD FOR DETERMINING THE CUTTING CAPABILITY AND THE FIXING STRENGTH OF ABRASIVE GRAINS
1. Equipment and materials
1.1. Device for testing PSSH-3.
1.2. Technical scales with a weighing error of ns more than 0.01 g.
1.3. Skin samples 680 mm long and 20 mm wide.
1.4. A rod made of calibrated steel grade 45 according to GOST 1051 with a diameter of 10 mm and a length of 250-300 mm.
2. Preparation for the test
2.1. Rip and weigh the skin sample.
2.2. A sample of the skin is covered on a metal disk with a diameter of 100 mm and a grinding rod in a cartridge holder. The rod should be tilted towards the rotation of the disc so. so that the end of the rods after grinding is flat. For this purpose, grinding is carried out with sandpaper of grain size 12 from normal electrocorundum for 15 s at a radial force of 19.6 N. The frequency of rotation of the rods is 36 min -1, the grinding speed is 15 m/s.
3. Carrying out the test
3.1. To determine the cutting ability of the skin, the rods are ground in the standard mode: radial force - 9.8 N. Grinding time - 1 min. grinding speed - 15 m/s. rod rotation frequency - 36 min -1 .
3.2. The length of the grinding section of the rod is measured with a caliper with an error of 0.05 mm.
3.3. To determine the strength indicators of fixing abrasive grains, the rod is deposited to room temperature or replaced with another one.
3.4. The rod is ground in the mode indicated in the table.
|
Grain |
Speed grinding, |
The frequency of rotation of the rods, think - " |
radial force. H |
Cycle duration, s |
Durability criteria - minimum metal removal per cycle, mm |
3.5. Test according to paragraphs. 3.2-3.4 are repeated until the skin firmness criteria according to the table are reached.
3.6. Remove and weigh a skin sample.
4. Processing of results
4.1. Cutting ability Q, mm determined by the formula
where?| - length of the grinding reference rod for the first grinding cycle, mm; I- grinding time, equal to I min.
GOST 5009-82 S. 9
4.2. Fixing strength index K, mm/g. abrasive grains of the skin is determined by the formula
where q, is the length of the ground reference rod, mm;
n is the number of cycles until the durability criterion is reached;
D is the difference in the masses of the sandpaper sample before and after the test, g.
4.3. The cutting power and the holding strength of the abrasive rolls are determined as the arithmetic mean of the results of the three tests.
APPENDIX 3 Mandatory
CALCULATION OF THE COEFFICIENT OF APPLICATION W.<1ИФМАТЕРИА."1А НА ОСНОВУ
The coefficient of application of silk material on the base A "n (the ratio of the area of \u200b\u200bthe base with the applied grinding material to its total area) is calculated by the formulas:
For version I
where o, shch - the maximum width of the relief, mm, / pt - the maximum step of the relief, mm;
For performance 2
For version 3
L n ~ .2
For version 4
where a min - minimum relief width, mm; / t, n - minimum relief step, mm.
(Introduced additional policy. Amendment No. I).
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