Waterproof cloth sanding paper. Technical conditions. Sanding paper (sanding paper) Sanding paper GOST 13344 79 grit

Today, JSC Volzhsky Grinding Material-Volga is a seller of a wide range of grinding materials.

Having a direct agreement with OJSC "Volzhsky Abrasive Plant" (JSC "VAZ"), Volzhsky and OJSC "Belgorod Abrasive Plant" (JSC "BAZ"), Belgorod, we are ready to offer you the products listed below from a warehouse in Volzhsky, Volgograd region

In order to expand the range of products, we have the opportunity to carry out custom deliveries of products from the company KWH Mirka Ltd - Finland, which produces flexible grinding materials for high-quality grinding.

1. Waterproof cloth sanding paper

Waterproof fabric sanding paper is used for manual and machine abrasive processing. various materials, including difficult to machine, with high loads using water-based cutting fluids, oil emulsions, as well as grinding without coolant, kerosene and white alcohol-based cutting fluids cannot be used when grinding to avoid softening of the synthetic waterproof coating on the non-working side of the fabric base and reducing water resistance sandpapers.

Manufacturer:

2. Sanding paper, non-waterproof

Non-waterproof paper sandpaper is used for manual and machine abrasive processing of resinous and soft wood, plastic, hard paint and varnish coatings, car bodies, rubber using coolant based on oil, kerosene, white alcohol, as well as grinding without coolant.

Manufacturer: JSC "Belgorod Abrasive Plant" (JSC "BAZ") Belgorod

3. Waterproof paper sanding paper

Waterproof paper sanding paper is intended for wet and dry sanding of paint and varnish coatings, putties, primers, plastics, ferrous and non-ferrous metals, glass, ceramics, porcelain, rubber, especially suitable for processing car bodies.

Manufacturer: JSC "Belgorod Abrasive Plant" (JSC "BAZ") Belgorod

4. Sanding paper in sheets

Sanding paper in sheets is produced on a paper and fabric basis. Now it is difficult to imagine sanding a wooden surface, performing body work, processing a varnished surface, putty, paint, or metal without the use of sanding paper or sandpaper on a cloth. Sanding paper is produced by applying abrasive grain in an electro-static magnetic field. Elastic waterproof sanding paper Suitable for dry or wet sanding. Sandpaper has a grain size from P60 to P2000, sandpaper on a fabric basis from P600.

Manufacturer: JSC "Belgorod Abrasive Plant" (JSC "BAZ") Belgorod

5. The validity period was lifted according to the protocol of the Interstate Council for Standardization, Metrology and Certification (IUS 11-12-94)

6. EDITION (July 2003) with Amendments No. 1, 2, 3, approved in February 1983, June 1985, July 1989 (IUS 6-83, 9-85, 11-89)


This standard applies to waterproof cloth abrasives intended for abrasive processing of various materials with and without the use of a cutting fluid based on water, oil, kerosene, etc.

1. TYPES AND SIZES

1. TYPES AND SIZES

1.1. Sanding paper should be made of the following types:

1 - for machine and manual processing of wood, plastics, varnish coatings and alloys with low hardness;

2 - for machine and manual processing of hard and highly viscous metals and alloys.

1.2. (Deleted, Amendment No. 1).

1.3. Sanding paper should be made of the following types:

O - single-layer;

D - two-layer.

1.4. Sanding paper must be produced in rolls, the sizes and grain sizes of which must correspond to those indicated in Table 1.

Table 1

Notes:

1. At the customer’s request, it is allowed to produce rolls with a width of more than 840 mm and a length of more than 30 m.

2. At the customer’s request, it is allowed to produce sanding paper from other grades and grain sizes of abrasive materials or mixtures thereof.


An example of a symbol for a waterproof fabric two-layer sanding paper type 2, 820 mm wide, 20 m long, on a fabric base made of plain-dyed weighted twill, from green silicon carbide grade 63C, grit size 40-N and 25-P, on phenol-formaldehyde resin:

D2 820x20 UG 63S 40-N/25-P SFZh GOST 13344-79

(Changed edition, Amendment No. 1, 2, 3).

2. TECHNICAL REQUIREMENTS

2.1. The sanding paper should be made of normal electrocorundum grades 15A, 14A and 13A; white electrocorundum grades 25A, 24A and 23A; black silicon carbide grades 55C, 54C and 53C; green silicon carbide grades 64C and 63C.

2.2. To make sanding paper, fabrics should be used in accordance with GOST 3357, GOST 19196, special durable twill (SP), medium twill N 1 plain-dyed (S1G), weighted twill (UG), semi-double-thread plain-dyed (P).

Notes:

1. The use of other fabrics, including synthetic fibers, is allowed.

2. If the fabric does not have an established symbol, it is allowed to indicate the fabric article in the symbol of the skin.

2.3. The grinding material must be firmly bonded to the base with phenol-formaldehyde resin grades SFZh-3038 and SFZh-3039 according to GOST 20907, varnish grade YAN-153 according to normative and technical documentation (NTD).

Note. It is permissible to use other ligaments whose physical and mechanical properties are no worse than those indicated.

2.4. The grain composition of grinding materials is in accordance with GOST 3647 with indices P and N.

Note. At the customer's request, it is allowed to use grinding materials with a main fraction content of 65% or more.

2.5. (Deleted, Amendment No. 3).

2.6. On the working surface of the sanding paper, the total area of ​​wrinkles, folds, areas without abrasive grains, filled with a binder, should not exceed 0.5% of the roll area for grits 25 and 20.

For skins of other grain sizes, the total area of ​​these defects should be no more than 1% of the roll area.

In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.

(Changed edition, Amendment No. 3).

2.7. (Deleted, Amendment No. 1).

2.8. The uneven thickness of the sanding paper should correspond to the values ​​​​indicated in Table 3.

Table 3*

______________________
*Table 2. (Deleted, Amendment No. 1).

(Changed edition, Amendment No. 1).

2.9. The tensile strength and elongation of the air-dry sandpaper should correspond to the values ​​​​indicated in Table 4.

Table 4

Note. Values breaking load and tissue elongations not provided for in Table 4 must be no less than for fabric P.

2.10. Indicators of the strength of fixation of abrasive grains are indicated in Appendix 2.

(Changed edition, Amendment No. 3).

2.11. The cutting ability of the sanding paper under the grinding conditions specified in Appendix 1 must correspond to the values ​​​​specified in Table 5.

Table 5

2.12. The water resistance coefficient (the ratio of the cutting ability of sandpaper soaked in water to the cutting ability of dry sandpaper) must be at least 0.75.

2.11-2.12. (Introduced additionally, Amendment No. 3).

3. ACCEPTANCE RULES

3.1. To monitor compliance of the abrasive paper with the requirements of this standard, acceptance inspection and periodic testing are carried out.

(Changed edition, Amendment No. 3).

3.2. At least 1% of rolls of abrasive paper from the batch, but not less than 3 pcs., according to paragraph 2.11 - 0.1%, but not less than 3 pcs.

The batch must consist of rolls of skins of the same characteristics, 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.

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

(Changed edition, Amendment No. 3).

3.4. Products (one of the roll sizes) that have passed the acceptance control must be subjected to periodic testing for compliance with the requirements of clauses 2.8 and 2.12 of at least 0.5% of the batch of rolls, but not less than 3 pcs., according to clause 2.9 - at least 0, 5% rolls of 40/25 grit sandpaper; 40; 25; 8; 5 and 4, but not less than 3 pcs., according to clause 2.9 - on all types of fabrics.

(Changed edition, Amendment No. 1, 3).

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

(Changed edition, Amendment No. 3).

4. CONTROL AND TEST METHODS

4.1. Test methods - according to GOST 6456.

Control of tensile strength and elongation - according to GOST 27181.

(Changed edition, Amendment No. 1, 3).

4.2. The method for determining the cutting ability of abrasive paper, as well as the strength of abrasive grains and the water resistance coefficient are specified in Appendix 1.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. On the non-working surface of the roll the following must be clearly marked no more than every 150 mm in the transverse and longitudinal directions:

b) symbol sanding paper (without designation of type, type, size);

c) batch number.

Notes

1. (Deleted, Amendment No. 1).

2. On a two-layer sandpaper, the grain size of the bottom layer should be indicated. For example, when making a two-layer skin with a grain size of 40-N/25-P, the grain size of the bottom layer is indicated as 40-N.


(Changed edition, Amendment No. 1, 3).

5.2. Winding the sanding paper into rolls should be tight and even, preventing the formation of wrinkles, folds and crumpled areas.

The end surface must be smooth, the protrusions of the edges must not exceed 20 mm. When installing the roll at the end, the protruding edges should not be wrinkled by more than 7 mm.

5.3. Rolls of sanding paper must be wrapped in paper in accordance with GOST 8273 and GOST 2228 or other packaging materials. Layers of packaging paper must reliably cover the ends of the rolls and ensure the preservation of the rolls of skins during transportation.

(Changed edition, Amendment No. 3).

5.4. The packaged roll must be labeled or stamped with clearly marked information:

A) trademark manufacturer;

b) symbol of the sanding paper;

c) release date and batch number;

d) stamp technical control.

Note. A roll of sanding paper made using YAN-153 varnish or similar materials must be affixed with a label indicating storage and transportation conditions.


(Changed edition, Amendment No. 1).

5.5-5.11. (Excluded, Amendment No. 3).

5.12. Other requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.

(Introduced additionally, Amendment No. 3).

Section 6. (Deleted, Amendment No. 3).

APPENDIX 1 (mandatory). METHOD FOR DETERMINING CUTTING ABILITY, INDICATORS OF STRENGTH OF ABRASIVE GRAINS AND WATER RESISTANCE COEFFICIENT

ANNEX 1
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. Samples of sanding paper 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.

(Changed edition, Amendment No. 1).

2. Preparation for the test

2.1. Edge and weigh a sample of abrasive paper.

2.2. Attach a sample of sanding paper to a metal disk with a diameter of 100 mm and the sanding rod in the chuck holder.

The grinding rod must be inclined in the opposite direction of the rotation of the disk so that the end of the rod is flat after grinding. For this purpose, grinding is carried out with 12-grit sandpaper from normal electrocorundum for 15 s at a radial load of 19.6 N, a rod rotation speed of 36 min, and a grinding speed of 15 m/s.

2.1, 2.2. (Changed edition, Amendment No. 1).

3. Carrying out the test

3.1. Set the test modes indicated in the table.

(Changed edition, Amendment No. 3).

3.2. Perform grinding.

3.3. Measure the length of the ground section of the rod with a caliper with an error of 0.05 mm.

3.4. Cool the rod to room temperature or replace it with another one.

3.5. Repeat operations according to paragraphs 3.2-3.4 until the durability criterion of the abrasive paper is achieved in accordance with the table.

3.2-3.5. (Changed edition, Amendment No. 1).

3.6. Remove and weigh a sample of abrasive paper.

4. Processing of test results

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

where is the length of the ground reference rod for the 1st grinding cycle, mm;

- duration of the grinding cycle, s.

4.2. The indicator of the strength of fixation of abrasive grains of abrasive paper, mm/g, 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 index of fastening strength of abrasive grains are determined as the arithmetic average of three tests.

4.1-4.3. (Changed edition, Amendment No. 1).

4.4. The water resistance coefficient is determined by testing a dry sandpaper sample and a sandpaper sample kept in water at a temperature of (60±3) °C for 2 hours.

(Introduced additionally, Amendment No. 1).

APPENDIX 2 (for reference). INDICATORS OF STRENGTH OF FIXING ABRASIVE GRAINS AND WATER RESISTANCE COEFFICIENT OF GRINDING FELLET

APPENDIX 2
Information

1. Indicators of the strength of fastening of the abrasive grains of the sanding paper (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 the table.

(Changed edition, Amendment No. 3).

2. (Deleted, Amendment No. 3).



Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: IPK Standards Publishing House, 2003

IPC PUBLISHING HOUSE OF STANDARDS

Moscow

STATE STANDARD OF THE USSR UNION

Date of introduction 01/01/81

This standard applies to waterproof cloth abrasives intended for abrasive processing of various materials with and without the use of a cutting fluid based on water, oil, kerosene, etc.

1. TYPES AND SIZES

1.1. Sanding paper should be made of the following types:

1 - for machine and manual processing of wood, plastics, varnish coatings and alloys with low hardness;

2 - for machine and manual processing of hard and highly viscous metals and alloys.

1.2. (Deleted, Amendment No. 1).

1.3. Sanding paper should be made of the following types:

O - single-layer;

D - two-layer.

1.4. Sanding paper must be produced in rolls, the sizes and grain sizes of which must correspond to those indicated in the table. 1.

Table 1

Notes:

1. At the customer’s request, it is allowed to produce rolls with a width of more than 840 mm and a length of more than 30 m.

2. At the customer’s request, it is allowed to produce sanding paper from other grades and grain sizes of abrasive materials or mixtures thereof.

An example of a symbol for a waterproof fabric two-layer sanding paper type 2, 820 mm wide, 20 m long, on a fabric base made of plain-dyed weighted twill, from green silicon carbide grade 63C, grit size 40-N and 25-P, on phenol-formaldehyde resin:

(Changed edition, Amendment No. 1, 2, 3).

2. TECHNICAL REQUIREMENTS

2.1. The sanding paper should be made of normal electrocorundum grades 15A, 14A and 13A; white electrocorundum grades 25A, 24A and 23A; black silicon carbide grades 55C, 54C and 53C; green silicon carbide grades 64C and 63C.

2.2. To make sanding paper, fabrics should be used in accordance with GOST 3357, GOST 19196, special durable twill (SP), medium twill No. 1 plain-dyed (S1G), weighted twill (UG), semi-double-thread plain-dyed (P).

Notes:

1. The use of other fabrics, including synthetic fibers, is allowed.

2. If the fabric does not have an established symbol, it is allowed to indicate the fabric article in the symbol of the skin.

2.3. The grinding material must be firmly bonded to the base with phenol-formaldehyde resin grades SFZh-3038 and SFZh-3039 according to GOST 20907, varnish grade YAN-153 according to normative and technical documentation (NTD).

Note. It is permissible to use other ligaments whose physical and mechanical properties are no worse than those indicated.

Note. At the customer's request, it is allowed to use grinding materials with a main fraction content of 65% or more.

2.5. (Excluded, Change No. 3).

2.6. On the working surface of the sanding paper, the total area of ​​wrinkles, folds, areas without abrasive grains, filled with a binder, should not exceed 0.5% of the roll area for grits 25 and 20.

For skins of other grain sizes, the total area of ​​these defects should be no more than 1% of the roll area.

In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.

(Changed edition, Amendment No. 3).

2.7. (Excluded, Change No. 1).

2.8. The uneven thickness of the sanding paper should correspond to the values ​​​​indicated in the table. 3.

Table 3 *

* Table 2. (Deleted, Amendment No. 1).

(Changed edition, Amendment No. 1).

2.9. The tensile strength and elongation of the air-dry sandpaper must correspond to the values ​​​​indicated in the table. 4.

Table 4

Note. Values ​​of breaking load and elongation of tissues not provided for in Table. 4, must be no less than for fabric P.

2.10. Indicators of the strength of fixation of abrasive grains are indicated in Appendix 2.

2.9, 2.10. (Changed edition, Rev. No. 3).

2.11. The cutting ability of the sanding paper under the grinding conditions specified in Appendix 1 must correspond to the values ​​​​specified in table. 5.

Table 5

2.12. The water resistance coefficient (the ratio of the cutting ability of sandpaper soaked in water to the cutting ability of dry sandpaper) must be at least 0.75.

2.11, 2.12. (Introduced additionally, Amendment No. 3).

3. ACCEPTANCE RULES

3.1. To monitor compliance of the abrasive paper with the requirements of this standard, acceptance inspection and periodic testing are carried out.

(Changed edition, Rev. No. 3).

3.2. Acceptance control for compliance with the requirements of paragraphs. 1.4 (in terms of size) and 2.6 must be subjected to at least 1% of rolls of abrasive paper per batch, but not less than 3 pieces, according to paragraphs. 2.11 - 0.1%, but not less than 3 pcs.

The batch must consist of rolls of skins of the same characteristics, produced in one shift and simultaneously presented for acceptance according to one document.

(Changed edition, Rev. No. 1, 3).

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.

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

(Changed edition, Rev. No. 3).

3.4. Products (one of the roll sizes) that have passed the acceptance control must be subjected to periodic testing for compliance with the requirements of paragraphs. 2.8 and 2.12 not less than 0.5% of the batch of rolls, but not less than 3 pcs., according to clause 2.9 - not less than 0.5% of rolls of sanding paper with grain size 40/25; 40; 25; 8; 5 and 4, but not less than 3 pieces, according to clause 2.9 - on all types of fabrics.

(Changed edition, Rev. No. 1, 3).

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

(Changed edition, Amendment No. 3).

4. CONTROL AND TEST METHODS

4.1. Test methods - according to GOST 6456.

Control of tensile strength and elongation - according to GOST 27181.

(Changed edition, Amendment No. 1, 3).

4.2. The method for determining the cutting ability of grinding paper, as well as the strength of abrasive grains and the water resistance coefficient are specified in Appendix 1.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. On the non-working surface of the roll the following must be clearly marked no more than every 150 mm in the transverse and longitudinal directions:

b) symbol of the sanding paper (without designations of type, type, size);

c) batch number.

Notes

2.1. (Deleted, Amendment No. 1).

2. On a two-layer sandpaper, the grain size of the bottom layer should be indicated. For example, when making a two-layer skin with a grain size of 40-N/25-P, the grain size of the bottom layer is indicated as 40-N.

(Changed edition, Rev. No. 1, 3).

5.2. Winding the sanding paper into rolls should be tight and even, preventing the formation of wrinkles, folds and crumpled areas.

The end surface must be smooth, the protrusions of the edges must not exceed 20 mm. When installing the roll at the end, the protruding edges should not be wrinkled by more than 7 mm.

5.3. Rolls of sanding paper must be wrapped in paper in accordance with GOST 8273 and GOST 2228 or other packaging materials. Layers of packaging paper must reliably cover the ends of the rolls and ensure the preservation of the rolls of skins during transportation.

(Changed edition, Amendment No. 3).

5.4. The packaged roll must be labeled or stamped with clearly marked information:

a) trademark of the manufacturer;

b) symbol of the sanding paper;

c) release date and batch number;

d) technical control stamp.

Note. A roll of sanding paper made using YAN-153 varnish or similar materials must be affixed with a label indicating storage and transportation conditions.

(Changed edition, Amendment No. 1).

5.5 - 5.11. (Excluded, Change No. 3).

5.12. Other requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.

(Introduced additionally, Amendment No. 3).

Section 6. (Deleted, Amendment No. 3).

ANNEX 1

Mandatory

METHOD FOR DETERMINING CUTTING ABILITY, INDICATORS OF STRENGTH OF ABRASIVE GRAINS AND WATER RESISTANCE COEFFICIENT

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. Samples of sanding paper 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.

(Changed edition, Rev. No. 1).

2. Preparation for the test

2.1. Edge and weigh a sample of abrasive paper.

2.2. Attach a sample of sanding paper to a metal disk with a diameter of 100 mm and the sanding rod in the chuck holder.

The grinding rod must be inclined in the opposite direction of the rotation of the disk so that the end of the rod is flat after grinding. For this purpose, grinding is carried out with 12-grain sandpaper from normal electrocorundum for 15 s at a radial load of 19.6 N, a rod rotation speed of 36 min -1, and a grinding speed of 15 m/s.

2.1, 2.2. (Changed edition, Amendment No. 1).

3. Carrying out the test

3.1. Set the test modes indicated in the table.

(Changed edition, Amendment No. 3).

3.2. Perform grinding.

3.3. Measure the length of the ground section of the rod with a caliper with an error of 0.05 mm.

3.4. Cool the rod to room temperature or replace it with another one.

3.5. Repeat operations according to paragraphs. 3.2 - 3.4 until the durability criterion of the abrasive paper is reached in accordance with the table.

3.2 - 3.5. (Changed edition, Rev. No. 1).

3.6. Remove and weigh a sample of abrasive paper.

4. Processing of test results

4.1. Cutting ability Q, mm 3 /min, determined by the formula

Where q 1 - length of the ground reference rod for the 1st grinding cycle, mm;

t- duration of the grinding cycle, s.

4.2. Indicator of the strength of fixation of abrasive grains of sandpaper TO, mm/g, determined by the formula

Where q 1 - length of ground reference rod, mm;

n- number of cycles until the durability criterion is achieved;

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

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

4.1 - 4.3. (Changed edition, Rev. No. 1).

4.4. The water resistance coefficient is determined by testing a dry sandpaper sample and a sandpaper sample kept in water at a temperature of (60 ± 3) °C for 2 hours.

(Introduced additionally, Amendment No. 1).

APPENDIX 2

Information

INDICATORS OF STRENGTH OF FIXING ABRASIVE GRAINS AND WATER RESISTANCE COEFFICIENT OF GRINDING FELLET

1. Indicators of the strength of fastening of the abrasive grains of the sanding paper (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 the table.

(Changed edition, Amendment No. 3).

2.(Deleted, Amendment No. 3).

INFORMATION DATA

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

DEVELOPERS

L.A. Grechko, V.I. Dombrovsky, M.A. Zaitseva, L.A. Kogan, B.C. Kravchenko, T.A. Krivtsova, A.A. Pylnev, E.S. Plotkina, V.A. Rybakov, S.K. Rozin

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated September 13, 1979 No. 3555

3. The date of the first inspection is 1989, the frequency of inspection is 5 years.

4. INSTEAD GOST 13344-67

5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

6. The validity period was lifted according to the protocol of the Interstate Council for Standardization, Metrology and Certification (IUS 11-12-94)

7. REISSUE (April 1997) with Amendments No. 1, 2, 3, approved in February 1983, June 1985, July 1989 (IUS 6-83, 9-85, 11-89)

Interstate standard GOST 13344-79
"The abrasive cloth is waterproof. Specifications"
(approved by Decree of the USSR State Standard of September 13, 1979 N 3555)

Waterproof abrasive cloth. Specifications

Instead of GOST 13344-67

This standard applies to waterproof cloth abrasives intended for abrasive processing of various materials with and without the use of a cutting fluid based on water, oil, kerosene, etc.

1. Types and sizes

1.1. Sanding paper should be made of the following types:

1 - for machine and manual processing of wood, plastics, varnish coatings and alloys with low hardness;

2 - for machine and manual processing of hard and highly viscous metals and alloys.

1.2. (Deleted, Amendment No. 1).

1.3. Sanding paper should be made of the following types:

O - single-layer;

D - two-layer.

1.4. Sanding paper must be produced in rolls, the sizes and grain sizes of which must correspond to those indicated in the table. 1 .

Table 1

Notes:

1. At the customer’s request, it is allowed to produce rolls with a width of more than 840 mm and a length of more than 30 m.

2. At the customer’s request, it is allowed to produce sanding paper from other grades and grain sizes of abrasive materials or mixtures thereof.

An example of a symbol for a waterproof fabric two-layer sanding paper type 2, 820 mm wide, 20 m long, on a fabric base made of plain-dyed weighted twill, from green silicon carbide grade 63C, grit size 40-N and 25-P, on phenol-formaldehyde resin:

D2 820x20 UG 63S 40-N/25-P SFZh GOST 13344-79

(Changed edition, Amendment No. 1, 2, 3).

2. Technical requirements

2.1. The sanding paper should be made of normal electrocorundum grades 15A, 14A and 13A; white electrocorundum grades 25A, 24A and 23A; black silicon carbide grades 55C, 54C and 53C; green silicon carbide grades 64C and 63C.

2.2. To make sanding paper, fabrics should be used in accordance with GOST 3357, GOST 19196, special durable twill (SP), medium twill N 1 plain-dyed (S1G), weighted twill (UG), semi-double-thread plain-dyed (P).

Notes:

1. The use of other fabrics, including synthetic fibers, is allowed.

2. If the fabric does not have an established symbol, it is allowed to indicate the fabric article in the symbol of the skin.

2.3. The grinding material must be firmly bonded to the base with phenol-formaldehyde resin grades SFZh-3038 and SFZh-3039 according to GOST 20907, varnish grade YAN-153 according to normative and technical documentation (NTD).

Note: It is permissible to use other ligaments whose physical and mechanical properties are no worse than those indicated.

2.4. The grain composition of grinding materials is in accordance with GOST 3647 with indices P and N.

Note: At the customer's request, it is allowed to use grinding materials with a main fraction content of 65% or more.

2.5. (Deleted, Amendment No. 3).

2.6. On the working surface of the sanding paper, the total area of ​​wrinkles, folds, areas without abrasive grains, filled with a binder, should not exceed 0.5% of the roll area for grits 25 and 20.

For skins of other grain sizes, the total area of ​​these defects should be no more than 1% of the roll area.

In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.

(Changed edition, Amendment No. 3).

2.7. (Deleted, Amendment No. 1).

2.8. The uneven thickness of the sanding paper should correspond to the values ​​​​indicated in the table. 3.

(Changed edition, Amendment No. 1).

2.9. The tensile strength and elongation of the air-dry sandpaper must correspond to the values ​​​​indicated in the table. 4 .

Table 4

Note: Values ​​of breaking load and elongation of tissues not provided for in Table. 4, must be no less than for fabric P.

2.10. Indicators of the strength of fixation of abrasive grains are indicated in Appendix 2.

(Changed edition, Amendment No. 3).

2.11. The cutting ability of the sanding paper under the grinding conditions specified in Appendix 1 must correspond to the values ​​​​specified in table. 5 .

Table 5

2.12. The water resistance coefficient (the ratio of the cutting ability of sandpaper soaked in water to the cutting ability of dry sandpaper) must be at least 0.75.

2.11-2.12. (Introduced additionally, Amendment No. 3).

3. Acceptance rules

3.1. To monitor compliance of the abrasive paper with the requirements of this standard, acceptance inspection and periodic testing are carried out.

(Changed edition, Amendment No. 3).

3.2. Acceptance control for compliance with the requirements of paragraphs. 1.4 (in terms of size) and 2.6 must be subjected to at least 1% of rolls of abrasive paper from the batch, but not less than 3 pieces, according to paragraphs. 2.11 - 0.1%, but not less than 3 pcs.

The batch must consist of rolls of skins of the same characteristics, produced in one shift and simultaneously presented for acceptance according to one document.

(Changed edition, Amendment No. 1, 3).

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.

STATE STANDARD

USSR UNION

TECHNICAL CONDITIONS

GOST 13344-79

Official publication

IPC PUBLISHING HOUSE OF STANDARDS Moscow

UDC 621.921.6.024:006.354 Group G25

STATE STANDARD OF THE USSR UNION

WATER-RESISTANT FABRIC SANDING PAPER

Specifications

Waterproof abrasive cloth. Specifications

Date of introduction 01/01/81

This standard applies to waterproof cloth abrasive paper intended for abrasive processing of various materials with and without the use of a cutting fluid based on water, oil, kerosene, etc.

1. TYPES AND SIZES

1.1. Sanding paper should be made of the following types:

1 - for machine and manual processing of wood, plastics, varnish coatings and alloys with low hardness;

2 - for machine and manual processing of hard and highly viscous metals and alloys.

1.2. (Deleted, Amendment No. 1).

1.3. Sanding paper should be made of the following types:

O - single-layer;

D - two-layer.

1.4. Sanding paper must be produced in rolls, the sizes and grain sizes of which must correspond to those indicated in the table. 1.

Official publication Reproduction prohibited

* © Standards Publishing House, 1979,

© IPK Publishing House of Standards, 1997 Reissue with Changes

Table 1

Notes:

1. At the customer’s request, it is allowed to produce rolls with a width of more than 840 mm and a length of more than 30 m.

2. At the customer’s request, it is allowed to produce sanding paper from other grades and grain sizes of abrasive materials or mixtures thereof.

An example of a symbol for a waterproof fabric two-layer sanding paper type 2, 820 mm wide, 20 m long, on a fabric base made of plain-dyed weighted twill, from green silicon carbide grade 63C, grit size 40-N and 25-P, on phenol-formaldehyde resin:

D2 820x20 UG 63S 40-N/25-P SFZHGOST 13344-79

(Changed edition, Amendment No. 1, 2, 3).

2. TECHNICAL REQUIREMENTS

2.1. The sanding paper should be made of normal electrocorundum grades 15A, 14A and 13A; white electrocorundum grades 25A, 24A and 23A; black silicon carbide grades 55C, 54C and 53C; green silicon carbide grades 64C and 63C.

2.2. To make sanding paper, fabrics should be used in accordance with GOST 3357, GOST 19196, special durable twill (SP), medium twill No. 1 plain-dyed (S1G), weighted twill (UG), semi-double-thread plain-dyed (P).

Notes:

1. The use of other fabrics, including synthetic fibers, is allowed.

2. If the fabric does not have an established symbol, it is allowed to indicate the fabric article in the symbol of the skin.

2.3. The grinding material must be firmly bonded to the base with phenol-formaldehyde resin grades SFZh-3038 and SFZh-3039 according to GOST 20907, varnish grade YAN-153 according to normative and technical documentation (NTD).

Note. It is permissible to use other ligaments whose physical and mechanical properties are no worse than those indicated.

Note. At the customer's request, it is allowed to use grinding materials with a main fraction content of 65% or more.

2.5. (Deleted, Amendment No. 3).

2.6. On the working surface of the sanding paper, the total area of ​​wrinkles, folds, areas without abrasive grains, filled with a binder, should not exceed 0.5% of the roll area for grits 25 and 20.

For skins of other grain sizes, the total area of ​​these defects should be no more than 1% of the roll area.

In a roll of skins, edges with a width of more than 10 mm with defects are not allowed.

2.7. (Deleted, Amendment No. 1).

2.8. The uneven thickness of the sanding paper should correspond to the values ​​​​indicated in the table. 3.

Table 3*

(Changed edition, Amendment No. 1).

2.9. The tensile strength and elongation of the air-dry sandpaper must correspond to the values ​​​​indicated in the table. 4.

Table 4

Note. Values ​​of breaking load and elongation of tissues not provided for in Table. 4, must be no less than for fabric P.

2.10. Indicators of the strength of fixation of abrasive grains are indicated in Appendix 2.

2.9, 2.10. (Changed edition, Amendment No. 3).

2.11. The cutting ability of the sanding paper under the grinding conditions specified in Appendix 1 must correspond to the values ​​​​specified in table. 5.

Table 5

2.12. The water resistance coefficient (the ratio of the cutting ability of sandpaper soaked in water to the cutting ability of dry sandpaper) must be at least 0.75. 2.11, 2.12. (Introduced additionally, Amendment No. 3).

3. ACCEPTANCE RULES

3 1 To control the compliance of the abrasive paper with the requirements of this standard, acceptance inspection and periodic testing are carried out

(Changed edition, Amendment No. 3).

3 2 Acceptance control for compliance with the requirements of paragraphs 1 4 (in terms of dimensions) and 2 6 must be subject to at least 1% of rolls of abrasive paper from the batch, but not less than 3 pieces, according to paragraphs 2 11 - 0.1%, but not less than 3 PC

The batch must consist of rolls of skins of the same characteristics, produced in one shift and simultaneously presented for acceptance according to one document

3 3 If during acceptance control it is established that there is non-compliance with the requirements of the standard for more than one controlled indicator, then the batch is not accepted

If non-compliance with the requirements of the standard is established for one of the controlled indicators, then re-inspection is carried out on twice the number of rolls of abrasive paper. If there are defects in the re-sampling, the batch is not accepted

(Changed edition, Amendment No. 3).

3 4 Products (one of the roll sizes) that have passed the acceptance control must be subjected to periodic testing for compliance with the requirements of paragraphs 28 and 2 12 of at least 0.5% of the batch of rolls, but not less than 3 pieces, according to paragraph 2 9 - not less than 0 .5% rolls of sandpaper, 40/25 grit; 40; 25; 8; 5 and 4, but not less than 3 pieces, according to paragraph 2 9 - on all types of fabrics

(Changed edition, Amendment No. 1, 3).

3 5 Periodic tests must be carried out at least once a year

(Changed edition, Amendment No. 3).

4. CONTROL AND TEST METHODS

4 1 Test methods - according to GOST 6456

Control of tensile strength and elongation - according to GOST 27181

(Changed edition, Amendment No. 1, 3).

4 2 The method for determining the cutting ability of grinding paper, as well as the strength of abrasive grains and the water resistance coefficient are specified in Appendix 1

5. MARKING, PACKAGING, TRANSPORTATION

AND STORAGE

5.1. On the non-working surface of the roll the following must be clearly marked no more than every 150 mm in the transverse and longitudinal directions:

b) symbol of the sanding paper (without designations of type, type, size);

c) batch number.

Notes

2.1. (Deleted, Amendment No. 1).

2. On a two-layer sandpaper, the grain size of the bottom layer should be indicated. For example, when making a two-layer skin with a grain size of 40-N/25-P, the grain size of the bottom layer is indicated as 40-N.

(Changed edition, Amendment No. 1, 3).

5.2. Winding the sanding paper into rolls should be tight and even, preventing the formation of wrinkles, folds and crumpled areas.

The end surface must be smooth, the protrusions of the edges must not exceed 20 mm. When installing the roll at the end, the protruding edges should not be wrinkled by more than 7 mm.

5.3. Rolls of sanding paper must be wrapped in paper in accordance with GOST 8273 and GOST 2228 or other packaging materials. Layers of packaging paper must reliably cover the ends of the rolls and ensure the preservation of the rolls of skins during transportation.

(Changed edition, Amendment No. 3).

5.4. The packaged roll must be labeled or stamped with clearly marked information:

a) trademark of the manufacturer;

b) symbol of the sanding paper;

c) release date and batch number;

d) technical control stamp.

Note. A roll of sanding paper made using YAN-153 varnish or similar materials must be affixed with a label indicating storage and transportation conditions.

5.5-5.11. (Excluded, Amendment No. 3).

5.12. Other requirements for labeling and packaging, as well as transportation and storage, are in accordance with GOST 27595.

(Introduced additionally, Amendment No. 3).

Section 6. (Deleted, Amendment No. 3).

APPENDIX 1 Mandatory

METHOD FOR DETERMINING CUTTING ABILITY, INDICATORS OF STRENGTH OF ABRASIVE GRAINS AND WATER RESISTANCE COEFFICIENT 1 2 3

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. Samples of sanding paper 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.

(Changed edition, Amendment No. 1).

2. Preparation for the test

2.1. Edge and weigh a sample of abrasive paper.

2.2. Attach a sample of sanding paper to a metal disk with a diameter of 100 mm and the sanding rod in the chuck holder.

The grinding rod must be inclined in the opposite direction of the rotation of the disk so that the end of the rod is flat after grinding. For this purpose, grinding is carried out with 12-grain sandpaper from normal electrocorundum for 15 s at a radial load of 19.6 N, a rod rotation speed of 36 min -1, and a grinding speed of 15 m/s.

2.1, 2.2. (Changed edition, Amendment No. 1).

3. Carrying out the test

3.1. Set the test modes indicated in the table.

(Changed edition, Amendment No. 3).

3.2. Perform grinding.

3.3. Measure the length of the ground section of the rod with a caliper with an error of 0.05 mm.

3.4. Cool the rod to room temperature or replace it with another one.

3.5. Repeat operations according to paragraphs. 3.2-3.4 until the durability criterion of the abrasive paper is reached in accordance with the table.

3.2-3.5. (Changed edition, Amendment No. I).

3.6. Remove and weigh a sample of abrasive paper.

4. Processing of test results

4.1. Cutting ability Q, mm 3 /min, is determined by the formula

Q --- ,

where q x is the length of the ground reference rod per 1st cycle grinding, mm;

D - duration of the grinding cycle, s.

4.2. The indicator of the strength of fixation of abrasive grains of sandpaper /G, mm/g, is determined by the formula

length of ground reference rod, mm; number of cycles until durability criterion is achieved; difference in mass of the sanding paper sample before and after testing, g.

where q x - n - D-

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

4.1-4.3. (Changed edition, Amendment No. 1).

4.4. The water resistance coefficient is determined by testing a dry sandpaper sample and a sandpaper sample kept in water at a temperature of (60±3) C for 2 hours.

(Introduced additionally, Amendment No. 1).

APPENDIX 2 Information

INDICATORS OF STRENGTH OF FIXING ABRASIVE GRAINS AND WATER RESISTANCE COEFFICIENT OF GRINDING FELLET

1. Indicators of the strength of fastening of the abrasive grains of the sanding paper (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 the table.

(Changed edition, Amendment No. 3). 2. (Deleted, Amendment No. 3).

INFORMATION DATA

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

DEVELOPERS

L.A. Grechko, V.I. Dombrovsky, M.A. Zaitseva, L.A. Kogan, V.S. Kravchenko, T.A. Krivtsova, A.A. Dustier, E.S. Plotkina, V.A. Rybakov, S.K! Rozin

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated September 13, 1979 No. 3555

3. The date of the first inspection is 1989, the frequency of inspection is 5 years.

4. INSTEAD GOST 13344-67

5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

6. The validity period was lifted according to the protocol of the Interstate Council for Standardization, Metrology and Certification (IUS 11-12-94)

7. REISSUE (April 1997) with Amendments No. 1,2,3, approved in February 1983, June 1985, July 1989 (IUS 6-83, 9-85, 11-89)

Editor V. L. Ogurtsov Technical editor V,I. Prusakova Corrector M.S. Kabashova Computer layout L.A. Circular

Ed. persons N° 021007 from J0.08.95. Delivered to set 05.14.97. Signed for publication on June 10, 1997. Uel. oven l. 0.70. Academic ed. l. 0.60. Circulation 200 copies. C576. Zach. 414.

IPK Standards Publishing House, 107076, Moscow, Kolodezny per., 14. Typed at the Publishing House on a PC

Branch of IPK Standards Publishing House - type. th Moscow Printer”

Moscow, Lyalin lane, 6.

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