Technical conditions. Sanding cloth

Section 6 (deleted) Appendix 1. (deleted) Appendix 2 (mandatory). Method for determining the cutting ability and index of fastening strength of abrasive grains Appendix 3 (mandatory). Calculation of the coefficient of application of abrasive material to the base

Interstate standard GOST 5009-82
"Abrasive cloth and paper. Specifications"
(approved by Decree of the USSR State Standard of February 18, 1982 N 735)

Abrasive cloth. Specifications

Instead of GOST 5009-75

This standard applies to cloth abrasives intended for abrasive processing. various materials without cooling or using cooling lubricants based on oil, kerosene, white spirit.

1. Types and sizes

1.1. The skin should be made of the following 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 the table. 1.

Table 1

Width, mm
	Prev. off
725, 740, 770, 800, 830

Table 1a

Dimensions in millimeters

Grain

	Interval	Prev. off	Interval	Prev. off	Interval	Prev. off	Interval	Prev. off

1.5. The deviation from parallelism of the forming relief lines must be within the tolerance for the relief step.

An example of a symbol for fabric abrasive paper type 2, with a relief working layer, 830 mm wide, 50 m long, on medium twill N 2 harsh, from white electrocorundum grade 24A, grain size 40-N, on hide glue:

2Р 830х50 С2 24А 40-Н М GOST 5009-82

2. Technical requirements

2.1. The skin must be manufactured in accordance with the requirements of this standard.

2.2. The sandpaper must be made from the abrasive materials specified in the table. 2.

table 2

Type of abrasive	Abrasive grade	Type of abrasive	Abrasive grade
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 customer's request, it is possible to produce abrasives from abrasive materials of other brands or mixtures thereof.

(Changed edition, Amendment No. 1, 2).

2.3. To make skins, cotton fabrics in accordance with GOST 3357 should be used as a base in accordance with Table. 3.

Table 3

Fabric name	Symbol	Fabric name	Symbol
Extra light twill, plain dyed		Weighted twill, plain dyed
Light twill N 1 harsh		Twill especially light harsh
Light twill N 2, plain dyed		Light twill N 2 harsh
Twill medium N 1 harsh		Twill medium N 2 harsh
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 no worse than those indicated.

2. If the fabric does not have an established symbol, it is allowed in symbol skins indicate its article number.

2.4. The sandpaper should be made from abrasive materials of the grit sizes indicated in the table. 4.

Table 4

(Changed edition, Amendment No. 1, 2).

2.5. The abrasive material must be bonded to the base with hide glue in accordance with GOST 3252 or other bonds in accordance with industry normative and technical documentation.

Note. It is allowed to introduce dyes or coloring pigments into the bundle.

2.6. The grain composition of grinding materials is in accordance with GOST 3647.

2.7.(Deleted, Amendment No. 2).

2.7.1. On work surface skins with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a binder, 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 to be no more than 1% of the roll area.

2.7.2. Edges with a width of more than 10 mm with defects are not allowed in a roll of skins.

2.7.1, 2.7.2. (Changed edition, Amendment 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 skin thickness should not exceed the values indicated in the table. 5.

Table 5

Grain	Grain	Thickness unevenness, mm, no more

2.9. The tensile strength and elongation of the skin must correspond to the values indicated in the table. 6.

Table 6

Fabric designation	Breaking force, N, not less, in directions		Elongation at break in the longitudinal direction,%, no more
Fabric designation	longitudinal	transverse

(Changed edition, Amendment No. 2).

2.10. The given wear of the skin must correspond to the values indicated in the table. 7.

Table 7

Grain	Reduced wear of skin types
Grain

2.11. The moisture content of the skin should be 2-8%.

2.12. The indicator of the strength of fixation of abrasive grains of electrocorundum sandpaper 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 indicated in table. 7a.

Table 7a

Grain	K, mm/g, skin types
Grain

(Changed edition, Amendment No. 1).

2.13. The coefficient of application of abrasive material to the base for sandpaper with a relief working layer should be 0.35-0.80.

(Introduced additionally, Amendment No. 1).

2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values specified in table. 7b.

Table 7b

Grain	Grain	Skin cutting ability, , not less

INTERSTATE STANDARD

TECHNICAL CONDITIONS

Official publication

IPC PUBLISHING HOUSE OF STANDARDS Moscow

UDC 621.921.6.024:006.354

Group G25

INTERSTATE STANDARD

FABRIC AND PAPER SANDING SKETCH

Specifications

Abrasive cloth. Specifications

Date of introduction 01/01/83

This standard applies to fabric abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, and white spirit.

1. TYPES AND SIZES

1.1. The skin should be made of the following 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 the 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, grits less than 32 and widths over 830 mm, grits less than 12.

Note. Upon customer request, it is possible to produce rolls of other sizes.

1.3. The skin must be made from the following types working layer:

C - solid;

R - relief.

1.4. The designs and dimensions of the relief working layer must correspond to those indicated in the drawing and in the table. 1a.

Official publication Reproduction prohibited

Version 1

Version 2

Version 3

Version 4

vKvvv

>VVV

Table la Dimensions in millimeters

1.5. The deviation from parallelism of the forming relief lines must be within the tolerance for the relief step.

An example of the designation of fabric sanding paper type 2, with a relief working layer, 830 mm wide, 50 m long, on medium twill No. 2 harsh, from white electrocorundum grade 24A, grain size 40-N, on hide glue:

2Р 830 x 50 С2 24А 40-Н М GOST 5009-82

2. TECHNICAL REQUIREMENTS

2.1. The skin must be manufactured in accordance with the requirements of this standard.

2.2. The sandpaper must be made from the abrasive materials specified in the table. 2.

table 2

Note. At the customer's request, it is possible to produce abrasives from abrasive materials of other brands or mixtures thereof.

(Changed edition, Amendment No. 1, 2).

2.3. To make skins, cotton fabrics in accordance with GOST 3357 should be used as a base 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 no 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, Amendment No. 2).

2.4. The sandpaper should be made from abrasive materials of the grit sizes indicated in the table. 4.

Table 4

(Changed edition, Amendment No. 1, 2).

2.5. The abrasive material must be bonded to the base with hide glue in accordance with GOST 3252 or other bonds in accordance with industry normative and technical documentation.

Note. It is allowed to introduce dyes or coloring pigments into the bundle.

2.6. The grain composition of grinding materials is in accordance with GOST 3647.

2.7. (Deleted, Amendment No. 2).

Note. By agreement with the consumer, the total area of these defects is allowed to be no more than 1% of the roll area.

2.7.2. Edges with a width of more than 10 mm with defects are not allowed in a roll of skins.

2.7.1, 2.7.2. (Changed edition, Amendment 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 skin thickness should not exceed the values indicated in the table. 5.

Table 5

2.9. The tensile strength and elongation of the skin must correspond to the values indicated in the table. 6.

Table 6

(Changed edition, Amendment No. 2).

2.10. The given wear of the skin must correspond to the values indicated in the table. 7.

Table 7

2.13. The coefficient of application of abrasive material to the base for sandpaper with a relief working layer should be 0.35-0.80.

(Introduced additionally, Amendment No. 1).

2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values specified in table. 76.

Table 76

Grain	Grain	Skin cutting ability, mm 3 /min, not less

Note. The cutting ability of sandpaper made from abrasive materials of the F14A and F13A grades should be 3% higher than that indicated in the table. 76.

(Changed edition, Amendment No. 2).

3. ACCEPTANCE RULES

3.1. To control the compliance of the skin with the requirements of this standard, acceptance inspection and periodic testing should be carried out.

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 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, Amendment No. 1).

3.2.1. The batch must consist of skins of one characteristic, produced in one shift and simultaneously presented for acceptance according to one document.

3.3. If during acceptance control it is determined that there is non-compliance with the requirements of the standard for more than one controlled indicator, then the batch is not accepted.

(Changed edition, Amendment No. 1).

3.3.1. If non-compliance with the requirements of the standard is established for one of the controlled indicators, then repeated control is carried out on a double number of rolls of skins.

If there are defects in the re-sampling, the batch will not be accepted.

(Introduced additionally, Amendment No. 1).

3.4. Products (one of the roll sizes) that have passed the acceptance control (according to clause 3.2) must be subjected to periodic testing for compliance with the requirements of PI. 2.8 and 2.13 - 0.5% of rolls, but not less than 3 pcs., pp. 2.9 and 2.11 - 0.5% of rolls of sandpaper with grain sizes 80, 40, 8, 5 and M40, but not less than 3 pcs., clause 2.9 - sandpaper based on all types.

(Changed edition, Amendment No. 1).

3.5. Periodic testing must be carried out at least once a year.

(Changed edition, Amendment No. 2).

4. CONTROL AND TEST METHODS

4.1. The reduced wear of the skin (the ratio of the graininess 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, Amendment No. 1).

4.1.1. Other test conditions are in accordance with 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 temperature environment. For testing, samples with a working size of 50 x 200 mm are taken.

Elongation is controlled at the breaking force values specified in table. 6.

(Changed edition, Amendment No. 1, 2).

4.3. Determination of cutting ability and indicators of the strength of fixation of abrasive grains of electrocorundum sandpaper are given in Appendix 2; determination of the cutting ability of flint skins - according to GOST 6456.

4.4. Dimensions and appearance working surface, uneven thickness and humidity are determined according to GOST 6456.

(Changed edition, Amendment No. 1).

4.5. Samples for control according to paragraphs. 4.1-4.4 are taken from any place on the roll that is at least 10 mm away from the end of the roll or edges. Value of indicators according to paragraphs. 4.1, 4.2, unevenness of thickness and moisture content is calculated as the arithmetic mean of the results of three determinations.

4.6. Calculation of the coefficient of application of abrasive material on the base Kn is given in Appendix 3.

(Introduced additionally, Amendment No. 1).

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. On the non-working surface of the roll of skins, every (235+20) mm in the longitudinal and every (200+20) mm in the transverse directions must be applied:

Designation (except type);

Batch number.

Notes:

1. When using a mixture of abrasive materials, the brand of the main abrasive material should be marked in the symbol; when using a mixture of grits, the main grit should be marked.

2. By agreement with the consumer, the roll dimensions may not be indicated.

(Changed edition, Amendment No. 1, 2).

5.2. Bundle markings:

Hide glue - M;

Combined ligament - K.

5.3. Winding the skins into rolls should be smooth and dense with the working layer facing outward, preventing the formation of wrinkles, folds and crumpled places.

The end surface of the roll must be flat, the protrusions of the edges of a roll up to 830 mm wide should not exceed 20 mm, and over 830 mm wide - 30 mm.

(Changed edition, Amendment No. 2).

5.4. Each roll of skins 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. Layers of packaging paper should cover the ends of the roll and ensure its safety during transportation.

5.5. (Deleted, Amendment No. 2).

5.6. Each packaged roll must be labeled or stamped with the following information:

Trademark of the manufacturer;

Symbol;

Release date and batch number;

Technical control stamp.

5.7-5.16. (Excluded, Amendment 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, Amendment No. 1).

APPENDIX 7. (Deleted, Amendment No. 1).

APPENDIX 2 Mandatory

METHOD FOR DETERMINING CUTTING ABILITY AND INDICATOR OF 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 no 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. A sample of the skin is edged and weighed.

2.2. A sample of sandpaper is fixed on a metal disk with a diameter of 100 mm and a grinding rod in a chuck holder. The rod should be inclined in the direction of rotation of the disk so that the end of the rod after grinding is flat. For this purpose, grinding is carried out with 12-grain sandpaper made from normal electrocorundum for 15 s at a radial force of 19.6 N, a rod rotation speed of 36 min -1, and a grinding speed of 15 m/s.

3. Carrying out the test

3.1. To determine the cutting ability of the sandpaper, the rod is grinded 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. Measure the length of the ground section of the rod with a caliper with an error of 0.05 mm.

3.3. To determine the strength of the 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 achieved in accordance with the table.

3.6. A sample of the skin is removed and weighed.

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 index of fastening strength K, mm/g, of abrasive grains of sandpaper is determined by the formula

where q is the length of the ground reference rod, mm;

n is the number of cycles until the resistance criterion is achieved;

A is the difference in mass of the sanding paper sample before and after testing, g.

4.3. The cutting ability and the index of fastening strength of abrasive grains are determined as the arithmetic average of the results of three tests.

APPENDIX 3 Mandatory

CALCULATION OF THE RATIO OF APPLICATION OF GRINDING MATERIAL ON THE BASE

The coefficient of application of abrasive material to the base K and (the ratio of the area of the base with the applied abrasive material to its total area) is calculated using the formulas:

For execution 1

Fpah Ap ah

where a max is the maximum width of the relief, mm, / max is the maximum pitch of the relief, mm;

For execution 2

Max l h /2 '

For execution 3

: S, ah ^tah)

For execution 4

where a min is the minimum width of the relief, 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 ENTERED INTO EFFECT by the Resolution State Committee USSR according to standards dated 02.18.82 No. 735

3. INSTEAD GOST 5009-75

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

	Item number, application		Item number, application
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 validity period was lifted 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 July 14, 2000. Delivered for recruitment on December 10, 2001. Signed for publication on December 26, 2001. Uel. oven l. 1.40. Academician-ed.l. 0.97.

Circulation 127 copies. C 3253. Zak. 1168.

IPC Publishing House of Standards, 107076, Moscow, Kolodezny per., 14. e-mail: Typeset and printed in IPC Publishing House of Standards

5. The validity period was lifted according to Protocol No. 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 fabric abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, and white spirit.

1. TYPES AND SIZES

1.1. The skin should be made of the following 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
	Prev. 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, grits less than 32 and widths over 830 mm, grits less than 12.

Note. Upon customer request, it is possible to produce rolls of other sizes.

1.3. The skin should be made with the following types of working layer:

C - solid;

R - relief.

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 millimeters


Grain

	Interval	Prev. off	Interval	Prev. off	Interval	Prev. off	Interval	Prev. off

1.5. The deviation from parallelism of the forming relief lines must be within the tolerance for the relief step.

An example of a symbol for fabric sanding paper type 2, with a relief working layer 830 mm wide, 50 m long, on medium twill N 2 harsh, from white electrocorundum grade 24A, grain size 40-N, on hide glue:

2Р 83050 C2 24A 40-N M GOST 5009-82

2. TECHNICAL REQUIREMENTS

2.1. The skin must be manufactured in accordance with the requirements of this standard.

2.2. The sandpaper should be made from the grinding materials specified in Table 2.

table 2


Type of abrasive	Abrasive grade
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 customer's request, it is possible to produce abrasives from abrasive materials of other brands or mixtures thereof.

(Changed edition, Amendment No. 1, 2).

2.3. To make skins, cotton fabrics in accordance with GOST 3357 should be used as a base in accordance with Table 3.

Table 3


Fabric name	Symbol
Extra light twill, plain dyed
Light twill N 1 harsh
Light twill N 2, plain dyed
Twill medium N 1 harsh
Medium twill N 1 plain dyed
Weighted twill N 1 severe
Weighted twill, plain dyed
Twill especially light harsh
Light twill N 2 harsh
Twill medium N 2 harsh
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 no 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, Amendment No. 2).

2.4. The sandpaper should be made from abrasive materials of the grit sizes indicated in Table 4.

Table 4


Type of abrasive	Electrocorundum	Monocorundum
Grinding material

(Changed edition, Amendment No. 1, 2).

2.5. The abrasive material must be bonded to the base with hide glue in accordance with GOST 3252 or other bonds in accordance with industry normative and technical documentation.

Note. It is allowed to introduce dyes or coloring pigments into the bundle.

2.6. The grain composition of grinding materials is in accordance with GOST 3647.

2.7. (Deleted, Amendment No. 2).

2.7.1. On the working surface of a skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a binder, 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 to be no more than 1% of the roll area.

2.7.2. Edges with a width of more than 10 mm with defects are not allowed in a roll of skins.

2.7.1, 2.7.2. (Changed edition, Amendment 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 skin thickness should not exceed the values indicated in Table 5.

Table 5


Grain	Thickness unevenness, mm, no more

2.9. The tensile strength and elongation of the skin must correspond to the values indicated in Table 6.

Table 6


Fabric designation	Breaking force N, not less, in directions		Elongation at break in the longitudinal direction, %, no more
	longitudinal	transverse
LO, LOG

(Changed edition, Amendment No. 2).

2.10. The given wear of the skin must correspond to the values indicated in Table 7.

Table 7


Grain	Reduced wear of skin types

2.11. The moisture content of the skin should be 2-8%.

2.12. The indicator of the strength of fixation of abrasive grains of electrocorundum sandpaper (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 indicated in Table 7a.

Table 7a


Grain	Mm/g, skin types

(Changed edition, Amendment No. 1).

2.13. The coefficient of application of abrasive material to the base for sandpaper with a relief working layer should be 0.35-0.80.

(Introduced additionally, Amendment No. 1).

2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values specified in Table 7b.

Table 7b


Grain	Skin cutting ability, mm/min, not less

Note. The cutting ability of sandpaper made from abrasive materials of the F14A and F13A grades should be 3% higher than that indicated in Table 7b.

(Changed edition, Amendment No. 2).

3. ACCEPTANCE RULES

3.1. To control the compliance of the skin with the requirements of this standard, acceptance inspection and periodic testing should be carried out.

3.2. Acceptance control for compliance with the requirements of clauses 1.2, 2.7.1-2.7.3 must be subjected to at least 1% of rolls of skins from the batch, but not less than 3 pieces, according to clauses 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, Amendment No. 1).

3.2.1. The batch must consist of skins of one characteristic, produced in one shift and simultaneously presented for acceptance according to one document.

3.3. If during acceptance control it is determined that there is non-compliance with the requirements of the standard for more than one controlled indicator, then the batch is not accepted.

(Changed edition, Amendment No. 1).

3.3.1. If non-compliance with the requirements of the standard is established for one of the controlled indicators, then repeated control is carried out on a double number of rolls of skins.

If there are defects in the re-sampling, the batch will not be accepted.

(Introduced additionally, Amendment No. 1).

3.4. Products (one of the roll sizes) that have passed the acceptance control (according to clause 3.2) must be periodically tested 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% rolls of sandpaper with grain sizes 80, 40, 8, 5 and M40, but not less than 3 pcs., clause 2.9 - sandpaper based on all types.

(Changed edition, Amendment No. 1).

3.5. Periodic testing must be carried out at least once a year.

(Changed edition, Amendment No. 2).

4. CONTROL AND TEST METHODS

4.1.1. Other test conditions are in accordance with GOST 6456.

4.2. Determination of tensile strength and elongation of the skin is carried out according to GOST 3813, except for paragraph 1.2, at ambient temperature. For testing, samples with a working size of 50X200 mm are taken.

Elongation is controlled at the breaking force values specified in Table 6.

(Changed edition, Amendment No. 1, 2).

4.4. The dimensions and appearance of the working surface, uneven thickness and humidity are determined according to GOST 6456.

(Changed edition, Amendment No. 1).

4.5. Samples for control according to paragraphs 4.1-4.4 are taken from any place on the roll that is at least 10 mm away from the end of the roll or edges. The value of indicators according to paragraphs 4.1, 4.2, unevenness of thickness and moisture content is calculated as the arithmetic mean of the results of three determinations.

4.6. The calculation of the coefficient of application of abrasive material to the base is given in Appendix 3.

(Introduced additionally, Amendment No. 1).

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. On the non-working surface of the roll of skins, every (235±20) mm in the longitudinal and every (200±20) mm in the transverse directions must be applied:

- symbol (except type);

- batch number.

Notes:

1. When using a mixture of abrasive materials, the brand of the main abrasive material should be marked in the symbol; when using a mixture of grits, the main grit should be marked.

2. By agreement with the consumer, the roll dimensions may not be indicated.

(Changed edition, Amendment No. 1, 2).

5.2. Bundle markings:

- hide glue - M;

- combined ligament - K.

5.3. Winding the skins into rolls should be smooth and dense with the working layer facing outward, preventing the formation of wrinkles, folds and crumpled places.

The end surface of the roll must be flat, the protrusions of the edges of a roll up to 830 mm wide should not exceed 20 mm, and over 830 mm wide - 30 mm.

(Changed edition, Amendment No. 2).

5.4. Each roll of skins 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. Layers of packaging paper should cover the ends of the roll and ensure its safety during transportation.

5.5. (Deleted, Amendment No. 2).

5.6. Each packaged roll must be labeled or stamped with the following information:

- trademark of the manufacturer;

- symbol;

- release date and batch number;

- technical control stamp.

5.7-5.16. (Excluded, Amendment 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).

Section 6. (Deleted, Amendment No. 1).

APPENDIX 1. (Deleted, Amendment No. 1).

APPENDIX 2 (mandatory). METHOD FOR DETERMINING CUTTING ABILITY AND INDICATOR OF 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 no 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. A sample of the skin is edged and weighed.

3. Carrying out the test

3.1. To determine the cutting ability of the sandpaper, the rod is grinded 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. Measure the length of the ground section of the rod with a caliper with an error of 0.05 mm.

3.3. To determine the strength of the 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 skin resistance criterion is achieved in accordance with the table.

3.6. A sample of the skin is removed and weighed.

4. Processing of results

4.1. Cutting capacity, mm/min, is determined by the formula

where is the length of the ground reference rod during the first grinding cycle, mm;

Sanding time equal to 1 min.

4.2. The index of fastening strength, mm/g, of abrasive grains of sandpaper is determined by the formula

where is the length of the ground reference rod, mm;

- number of cycles until the durability criterion is achieved;

- difference in mass of the sanding paper sample before and after testing, g.

4.3. The cutting ability and the index of fastening strength of abrasive grains are determined as the arithmetic average of the results of three tests.

APPENDIX 3 (mandatory). CALCULATION OF THE RATIO OF APPLICATION OF GRINDING MATERIAL ON THE BASE

APPENDIX 3
Mandatory

The coefficient of application of abrasive material to the base (the ratio of the area of the base with the applied abrasive material to its total area) is calculated using the formulas:

- for execution 1

where is the maximum width of the relief, mm;

- maximum relief pitch, mm;

- for version 2

For execution 3

For execution 4

where is the minimum width of the relief, mm;

- minimum relief pitch, mm.

(Introduced additionally, Amendment No. 1).

Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: IPK Standards Publishing House, 2002

Sanding cloth, GOST 5009-82

Mechanical engineering. GOST 5009-82 - Fabric sanding paper. Technical conditions. OKS: Mechanical engineering, Cutting tools. GOST standards. Sanding cloth. Technical conditions. class=text>

GOST 5009-82

Sanding cloth. Specifications

GOST 5009-82
Group G25

INTERSTATE STANDARD

FABRIC AND PAPER SANDING SKETCH
Specifications
Abrasive cloth. Specifications

OKP 39 8500

Date of introduction 1983-01-01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated 02.18.82 N 735

3. INSTEAD GOST 5009-75

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

	Item number, application
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 validity period was lifted according to Protocol No. 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 fabric abrasive paper intended for abrasive processing of various materials without cooling or using cutting fluids based on oil, kerosene, and white spirit.

1. TYPES AND SIZES

1.1. The skin should be made of the following 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, grits less than 32 and widths over 830 mm, grits less than 12.
Note. Upon customer request, it is possible to produce rolls of other sizes.

1.3. The skin should be made with the following types of working layer:
C - solid;
R - relief.

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 millimeters

Grain

	Interval	Prev. off	Interval	Prev. off	Interval	Prev. off	Interval	Prev. off

1.5. The deviation from parallelism of the forming relief lines must be within the tolerance for the relief step.
An example of a symbol for fabric sanding paper type 2, with a relief working layer 830 mm wide, 50 m long, on medium twill N 2 harsh, from white electrocorundum grade 24A, grain size 40-N, on hide glue:

2Р 83050 S2 24A 40-N M GOST 5009-82

2. TECHNICAL REQUIREMENTS

2.1. The skin must be manufactured in accordance with the requirements of this standard.

2.2. The sandpaper should be made from the grinding materials specified in Table 2.

table 2

Note. At the customer's request, it is possible to produce abrasives from abrasive materials of other brands or mixtures thereof.

(Changed edition, Amendment No. 1, 2).

2.3. To make skins, cotton fabrics in accordance with GOST 3357 should be used as a base in accordance with Table 3.

Table 3

Fabric name	Symbol
Extra light twill, plain dyed
Light twill N 1 harsh
Light twill N 2, plain dyed
Twill medium N 1 harsh
Medium twill N 1 plain dyed
Weighted twill N 1 severe
Weighted twill, plain dyed
Twill especially light harsh
Light twill N 2 harsh
Twill medium N 2 harsh
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 no 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, Amendment No. 2).

2.4. The sandpaper should be made from abrasive materials of the grit sizes indicated in Table 4.

Table 4

(Changed edition, Amendment No. 1, 2).

2.5. The abrasive material must be bonded to the base with hide glue in accordance with GOST 3252 or other bonds in accordance with industry normative and technical documentation.
Note. It is allowed to introduce dyes or coloring pigments into the bundle.

2.6. The grain composition of grinding materials is in accordance with GOST 3647.

2.7. (Deleted, Amendment No. 2).

2.7.1. On the working surface of a skin with a continuous working layer, the total area of wrinkles, folds, areas without abrasive grains, filled with a binder, 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 to be no more than 1% of the roll area.

2.7.2. Edges with a width of more than 10 mm with defects are not allowed in a roll of skins.

2.7.1, 2.7.2. (Changed edition, Amendment 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 skin thickness should not exceed the values indicated in Table 5.

Table 5

2.9. The tensile strength and elongation of the skin must correspond to the values indicated in Table 6.

Table 6

Fabric designation	Breaking force N, not less, in directions		Elongation at break in the longitudinal direction, %, no more
	longitudinal	transverse
LO, LOG

(Changed edition, Amendment No. 2).

2.10. The given wear of the skin must correspond to the values indicated in Table 7.

Table 7

Grain	Reduced wear of skin types

2.11. The moisture content of the skin should be 2-8%.

Table 7a

Grain	Mm/g, skin types

(Changed edition, Amendment No. 1).

2.13. The coefficient of application of abrasive material to the base for sandpaper with a relief working layer should be 0.35-0.80.
(Introduced additionally, Amendment No. 1).

2.14. The cutting ability of the skin under the test conditions specified in Appendix 2 must correspond to the values specified in Table 7b.

Table 7b

Grain	Skin cutting ability, mm/min, not less

Note. The cutting ability of sandpaper made from abrasive materials of the F14A and F13A grades should be 3% higher than that indicated in Table 7b.

(Changed edition, Amendment No. 2).

3. ACCEPTANCE RULES

3.1. To control the compliance of the skin with the requirements of this standard, acceptance inspection and periodic testing should be carried out.

3.1, 3.2. (Changed edition, Amendment No. 1).

3.2.1. The batch must consist of skins of one characteristic, produced in one shift and simultaneously presented for acceptance according to one document.

3.3.1. If non-compliance with the requirements of the standard is established for one of the controlled indicators, then repeated control is carried out on a double number of rolls of skins.
If there are defects in the re-sampling, the batch will not be accepted.
(Introduced additionally, Amendment No. 1).

3.5. Periodic testing must be carried out at least once a year.
(Changed edition, Amendment No. 2).

4. CONTROL AND TEST METHODS

4.1.1. Other test conditions are in accordance with GOST 6456.

4.2. Determination of tensile strength and elongation of the skin is carried out according to GOST 3813, except for paragraph 1.2, at ambient temperature. For testing, samples with a working size of 50X200 mm are taken.
Elongation is controlled at the breaking force values specified in Table 6.
(Changed edition, Amendment No. 1, 2).

4.4. The dimensions and appearance of the working surface, uneven thickness and humidity are determined according to GOST 6456.
(Changed edition, Amendment No. 1).

4.6. The calculation of the coefficient of application of abrasive material to the base is given in Appendix 3.
(Introduced additionally, Amendment No. 1).

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

1. When using a mixture of abrasive materials, the brand of the main abrasive material should be marked in the symbol; when using a mixture of grits, the main grit should be marked.

2. By agreement with the consumer, the roll dimensions may not be indicated.

(Changed edition, Amendment No. 1, 2).

5.2. Bundle markings:
- hide glue - M;
- combined ligament - K.

5.3. Winding the skins into rolls should be smooth and dense with the working layer facing outward, preventing the formation of wrinkles, folds and crumpled places.
The end surface of the roll must be flat, the protrusions of the edges of a roll up to 830 mm wide should not exceed 20 mm, and over 830 mm wide - 30 mm.
(Changed edition, Amendment No. 2).

5.4. Each roll of skins 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. Layers of packaging paper should cover the ends of the roll and ensure its safety during transportation.

5.5. (Deleted, Amendment No. 2).

5.6. Each packaged roll must be labeled or stamped with the following information:
- trademark of the manufacturer;
- symbol;
- release date and batch number;
- technical control stamp.

5.7-5.16. (Excluded, Amendment 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).
Section 6. (Deleted, Amendment No. 1).
APPENDIX 1. (Deleted, Amendment No. 1).

APPENDIX 2 (mandatory). METHOD FOR DETERMINING CUTTING ABILITY AND INDICATOR OF 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 no 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. A sample of the skin is edged and weighed.

3. Carrying out the test

3.1. To determine the cutting ability of the sandpaper, the rod is grinded 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. Measure the length of the ground section of the rod with a caliper with an error of 0.05 mm.

3.3. To determine the strength of the 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 skin resistance criterion is achieved in accordance with the table.

3.6. A sample of the skin is removed and weighed.

4. Processing of results

4.1. Cutting capacity, mm/min, is determined by the formula

where is the length of the ground reference rod during the first grinding cycle, mm;
- grinding time equal to 1 min.

Technical conditions. Sanding cloth

TECHNICAL CONDITIONS

INTERSTATE STANDARD

FABRIC AND PAPER SANDING SKETCH

Specifications

1. TYPES AND SIZES

vKvvv

>V*V*V

2. TECHNICAL REQUIREMENTS

(Changed edition, Amendment No. 1, 2).

2.7. (Deleted, Amendment No. 2).

2.7.1, 2.7.2. (Changed edition, Amendment No. 1, 2).

(Changed edition, Amendment No. 2).

3. ACCEPTANCE RULES

3.1. 3.2. (Changed edition, Amendment No. 1).

4. CONTROL AND TEST METHODS

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.5. (Deleted, Amendment No. 2).

5.7-5.16. (Excluded, Amendment No. 2).

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR

2. APPROVED AND ENTERED INTO EFFECT by the Resolution State Committee USSR according to standards dated 02.18.82 No. 735

3. INSTEAD GOST 5009-75

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

5. The validity period was lifted 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)

1. TYPES AND SIZES

2. TECHNICAL REQUIREMENTS

3. ACCEPTANCE RULES

4. CONTROL AND TEST METHODS

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

APPENDIX 2 (mandatory). METHOD FOR DETERMINING CUTTING ABILITY AND INDICATOR OF FIXING STRENGTH OF ABRASIVE GRAINS

APPENDIX 3 (mandatory). CALCULATION OF THE RATIO OF APPLICATION OF GRINDING MATERIAL ON THE BASE

Sanding cloth. Specifications

1. TYPES AND SIZES

2. TECHNICAL REQUIREMENTS

3. ACCEPTANCE RULES

4. CONTROL AND TEST METHODS

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

APPENDIX 2 (mandatory). METHOD FOR DETERMINING CUTTING ABILITY AND INDICATOR OF FIXING STRENGTH OF ABRASIVE GRAINS

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