This standard applies to paint and varnish coatings (hereinafter referred to as coatings) of surface products and establishes groups, technical requirements and designations of coatings.

STATE STANDARD OF THE UNION OF THE SSR

This standard applies to paint and varnish coatings (hereinafter referred to as coatings) of surfaces of products and establishes groups, technical requirements and designations of coatings.

1.COATING GROUPS

1.1. Depending on the purpose, the coverages are divided into groups set in.

Note.The value of the limiting temperature is added to the designation of the operating conditions of heat-resistant coatings, for example, 8 160 ° FROM .

If necessary, the value of the limiting temperature is also added to the designation of the operating conditions of other coatings, for example, 4 60 ° C , 6/1 150 ° C , 9 200 ° FROM .

Notes:

2. In technically justified cases, it is allowed to use high gloss coatings for III - IV classes, glossy - for V-VII. At the same time, the norms for high-gloss coatings of III-IV classes should correspond to the norms for glossy coatings, glossy V-VII classes - for semi-gloss ones.

3. For products with a painted surface area of ​​​​less than 1 m 2 for I -III classes, the number of inclusions is recalculated for a given area, if not an integer is obtained, then the value is rounded to the side more. The table shows the size of one inclusion. When evaluating the coating, all inclusions visible under the conditions are taken into account. For coatings of all classes, a different number of inclusions is allowed, if the size of each inclusion and the total size of inclusions does not exceed that specified for this class in the table.

4. For IV-VII classes, individual surface irregularities are allowed, due to the condition of the surface to be painted.

5. For cast products weighing more than 10 tons, an increase in the waviness of coatings by 2 mm is allowed for III-IV classes.

6. Allowed for welded and riveted products with a painted surface of more than 5 m 2 increase in the waviness of the coating by 2.5 mm for class III, by 3.5 mm for classes IV-VI

7. It is allowed to apply the classification and designation of non-normative and technical documentation if the specificity of the non-metallic materials being painted does not allow characterizing the coating class according to.

2.2. Coating defects that affect protective properties coatings (punctures, craters, wrinkling, etc.).

2.3. Requirements for the surface of the metal being painted are given in the mandatory.

Requirements for non-metallic surfaces to be painted are also established in the standards or technical specifications for the product.

2.4. The requirements for the roughness of a primed or putty surface are given in the reference.

2.5. Requirements for the gloss of coatings are given in the recommended.

(Revised edition, Rev. No. 4).

2.8. Coating quality control may be carried out on a sample made and approved in accordance with the requirements of standards or specifications on the product.

3.4. In the designation of coatings it is allowed to indicate special conditions operation by full name.

3.5. If the painted surface is simultaneously or alternately in various conditions operation, they are all indicated in the designation. In this case, the main condition of operation is put in the first place.

3.6. If the paint coating is preceded by a metallic or non-metallic inorganic coating, then their designations are separated by a slash, with the designation of the paint coating in second place. For example, a cadmium coating, 6 microns thick, followed by painting with red-brown polyvinyl butyral enamel VL-515 according to class III, for the operation of the coating when exposed to petroleum products:

Kd6/Enamel VL-515 red-brown.III.6/2

(Revised edition, Rev. No. 3).

Attachment 1. (Deleted, Rev. No. 3).

APPENDIX2

Mandatory

Requirements for paintable metal surfaces

Notes:

1. The sign "-" means that the use of coatings for this class is unacceptable or not economically feasible.

2. For all classes of coatings, nicks, unevenly cut edges, sharp edges and corners at the transition points from one section to another are not allowed.

3. When painting cast parts weighing more than 10 tons, an increase in flatness by 2 mm is allowed forIII- VIclasses.

4. For products with a painted surface of more than 5 m 2, an increase in flatness by 2.5 mm for class III, by 3.5 mm for classes IV-VI is allowed.

5. When painting cast parts weighing more than 5 tons forIIIandIVclasses, it is allowed to increase the surface roughness to be putty up to 630 microns.

6. Only local filling is allowed for class 1 coating.

7. Individual surface irregularities are understood as irregularities with dimensions (length or width) of no more than 20 mm.

8 Surface non-flatness requirements are given for flat surfaces with largest size over 500 mm. When assessing the non-flatness of the surface, individual irregularities are not taken into account

9. For surfaces subjected to filling, under coatings of class III, individual irregularities up to 1 mm high are allowed.

(Changed edition, Rev. No. 3, 4).

ANNEX 2a

Reference

Requirements for the roughness of a primed or putty surface for various classes of coatings

(Changed edition, Rev. No. 3, 4).

APPENDIX5

EVALUATION OF THE SHADES WITH A PROFILOGRAPH PROFILOMETER

The evaluation of the surface of the coating by a shagreen profiler-profilometer is carried out in accordance with the instructions for the device at maximum length sensor travel 40 mm. Recommended vertical zoom when recording 2000 - 4000 times, horizontal - 4 times.

Shagreen is characterized by heighth and foundationl irregularities. According to the profilogram, the average height and average base in millimeters are determined for five maximum protrusions:

where . (Introduced additionally, Amendment No. 4).

INFORMATION DATA

1. DEVELOPED BY IVNESEN by the Ministry of Chemical Industry of the USSR

DEVELOPERS

A. M. Elisavetsky, cand. chem. sciences; G. K. Kozlovtseva; G. A. Mironova; S. P. Kotova(topic leader); A. T. Shchegoleva; O. A. Barysheva

2. APPROVED AND INTRODUCED BY Decree State Committee Standards of the Council of Ministers of the USSR dated 03.09.74. No. 2089

3. Periodicity of inspection - 5 years

4. Instead of GOST 9894-61

5. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

GOST 9.032-74 ESZKS. Paint coatings. Groups, technical requirements and designations (with Changes N 1-4)

1. GOST 9.032-74
2. Group T95
3. INTERSTATE STANDARD
4. Unified system of protection against corrosion and aging
5. PAINT COATINGS
6. Groups, technical requirements and designations
7. Unified system corrosion and aging protection.
8. Coatings of lacquers and paints. Classification and designs
9. ISS 25.220.60
10. 87.020
11. OKSTU 0009
12. Introduction date 1975-07-01
13. By the Decree of the State Committee of Standards of the Council of Ministers of the USSR of September 3, 1974 N 2089, the date of introduction was set to 01.07.75
14. The limitation of the validity period was removed by the Decree of the State Standard of the USSR of 13.03.89 N 455
15. INSTEAD OF GOST 9894-61
16. EDITION with Changes N 1, 2, 3, 4, approved in June 1976, March 1980, February 1986, March 1989 (IUS 7-76, 5-80, 5-86, 5-89 )
17. This standard applies to paint coatings (hereinafter referred to as coatings) of product surfaces and establishes groups, technical requirements and designations of coatings.
18. 1. COATING GROUPS
19. 1.1. Depending on the purpose, the coatings are divided into groups, established in Table 1.
20. Table 1
21. Coating group Operating conditions Designation of operating conditionsWeather-resistant Climatic factors According to GOST 9.104-79Waterproof Marine, fresh water and vapors 4Fresh water and its vapors 4/1Sea water 4/2Special X-ray and other types of radiation, deep cold, open flame, biological effects, etc. 5X-ray and other types of radiation 5/1Deep cold (temperature below minus 60 °C) 5/2Open flame 5/3Impact of biological factors 5/4Oil and petrol resistant Mineral oils and greases, gasoline, kerosene and other petroleum products 6Mineral oils and lubricants 6/1Gasoline, kerosene and other petroleum products 6/2Chemical resistant Various chemicals 7Aggressive gases, vapors 7/1Solutions of acids and acid salts 7/2Solutions of alkalis and basic salts 7/3Neutral salt solutions 7/4Heat-resistant Temperature above 60 °C 8Electrically insulating and electrically conductive Electric current, voltage, electric arc and surface discharges 9Electrical insulating 9/1Conductive 9/2
22. Note. To designate the operating conditions of heat-resistant coatings, add the value of the limiting temperature, for example, 160 ° C.
23. If necessary, the value of the limiting temperature is also added to the designation of the operating conditions of other coatings, for example, 60 ° C, 150 ° C, 200 ° C.
24. Section 1 (Changed edition, Rev. N 3).
25. 2. TECHNICAL REQUIREMENTS
26. 2.1. Coatings must meet the requirements specified in Table 2.
27. table 2
28. Coating class Defect name patterned (hammer) “Moiré” high-gloss glossy, including with glazing effect semi-gloss semi-matt matt deep-matt glossy and semi-gloss I Inclusions: quantity, pcs/m, no more - - 4 - - - size, mm, no more - - 0,2 - - - distance between inclusions, mm, not less than - - 100 - - - Shagreen - - Not allowed - - - streaks - - Not allowed - - - Strokes, risks - - Not allowed - - - Waviness, mm, no more - - Not allowed - - - Variety of shades - - Not allowed - - - II Inclusions: quantity, pcs/m, no more than 4 4 4 4 8 8 8 8 size, mm, not more than 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 distance between inclusions, mm, no more than 100 100 100 100 100 100 100 100 Shagreen Strokes, risks streaks Waviness, mm, no more Variety of shades Pattern heterogeneity III Inclusions: quantity, pieces/m, not more than - 10 15 15 25 25 25 25 size, mm, no more - 0.5 0.5 0.5 0.5 0.5 0.5 0.5 distance between inclusions, mm, not less than - 50 50 50 30 30 30 30 Shagreen - streaks - Strokes, risks - Waviness, mm, no more - 1.5 1.5 1.5 1.5 1.5 1.5 1,5 Variation in hue - Heterogeneity of the pattern - IV Inclusions: quantity, pcs/dm, not more than - 1 1 1 2 2 2 2 size, mm, no more - 1.0 1.0 1.0 1.0 1.0 1.0 1,0 distance between inclusions, mm, not less - 10 10 10 10 10 10 10 Shagreen - streaks - Strokes, risks - Waviness, mm, no more - 2 2 2 2 2 2 2 Variety - hue - Heterogeneity of the pattern - V Inclusions: quantity, pcs/dm, not more than - - 4 4 4 4 4 4 size, mm, no more - - 2.0 2.0 2.0 2.0 3.0 3,0 Shagreen - - Drips - - Strokes, risks - - Waviness, mm, no more - - 2.5 2.5 2.5 2.5 2.5 2,5 Color variation - - Pattern heterogeneity - - VI Inclusions: quantity, pcs/dm, not more than - - 8 8 8 8 8 8 size, mm, no more - - 3.0 3.0 3.0 3.0 3.0 3,0 Shagreen - - Drips - - Strokes, risks - - Waviness, mm, no more - - 4.0 4.0 4.0 4.0 4.0 4,0 Variety of shades - - Pattern heterogeneity - - VII Inclusions - - - Not standardizedShagreen - - - Not standardizedDrips - - - Not standardizedStrokes, risks - - - Not standardizedWaviness, mm, no more - - - Not standardizedColor variation - - - Not standardizedPattern heterogeneity - - - Not standardized

    Norm for coatings
    smooth							embossed
    plain						"Shagrenev"
    semi-matte
    		-
    Not allowed		-
    		-
    Not allowed		-
    Not allowed		-
    Not allowed		-
    Not allowed		-
    Not allowed		-
    8
    0,5
    100
    Minor						Not standardized
    Separate
    Not allowed
    Not allowed
    Not allowed
    Not standardized						Not allowed
    25
    0,5
    30
    Minor					Not standardized
    Not allowed
    Separate
    1,5
    Not allowed
    Not standardized					Not allowed
    2
    1,0
    10
    Allowed					Not standardized
    Not allowed
    Separate
    2
    Not allowed
    Not standardized					Not allowed
    4
    3,0
    Allowed				Not standardized
    Separate
    Allowed
    2,5
    Not allowed
    Not standardized				Not allowed
    8
    3,0
    Allowed				Not standardized
    Separate
    Allowed
    4,0
    Allowed
    Not standardized				Allowed
    Not standardized				-
    Not standardized				-
    Not standardized				-
    Not standardized				-
    Not standardized				-
    Not standardized				-
    Not standardized				-

29. Notes:
30. 2. In technically justified cases, it is allowed to use high-gloss coatings for classes III-IV, glossy coatings for classes V-VII. At the same time, the norms for high-gloss coatings of III-IV classes must correspond to the norms for glossy coatings, glossy V-VII classes - for semi-gloss.
31. 3. For products with a surface area of ​​less than 1 m2 for classes I-III, the number of inclusions is recalculated for this area, if not an integer is obtained, then the value is rounded up. The table shows the size of one inclusion. When evaluating the coating, all inclusions visible under the conditions of clause 2.6 are taken into account. For coatings of all classes, a different number of inclusions is allowed, if the size of each inclusion and the total size of inclusions does not exceed that specified for this class in the table.
32. 4. For IV-VII classes, individual surface irregularities are allowed, due to the state of the surface to be painted.
33. 5. For cast products weighing more than 10 tons, an increase in the waviness of coatings by 2 mm is allowed for III-VI classes.
34. 6. For welded and riveted products with a painted surface of more than 5 m, an increase in the waviness of coatings by 2.5 mm for class III, by 3.5 mm for classes IV-VI is allowed.
35. 7. It is allowed to apply the classification and designation according to the normative and technical documentation, if the specificity of the non-metallic materials being painted does not allow characterizing the coating class according to Table 2.
36. 2.2. Coating defects that affect the protective properties of the coating (punctures, craters, wrinkling, etc.) are not allowed.
37. 2.3. Requirements for the surface of the metal to be painted are given in Appendix 2.
38. Requirements for non-metallic painted surfaces are set in the standards or specifications for the product.
39. 2.4. The requirements for the roughness of a primed or putty surface are given in Appendix 2a.
40. 2.5. Gloss requirements for coatings are given in Appendix 3.
41. 2.6. The control is carried out in daylight or artificial diffused light, at a distance of 0.3 m from the subject of inspection. Norms artificial lighting accepted according to SNiP II-A.9-71.
42. 2.7. Methods for determining the gloss and the presence of coating defects are given in Appendix 4.
43. The assessment of shagreen with a profiler-profilometer is given in Appendix 5.
44. 2.1-2.7. (Changed edition, Rev. N 3, 4).
45. 2.8. The quality control of the coating may be carried out on a sample made and approved in accordance with the requirements of standards or technical specifications for the product.
46. 3. DESIGNATION OF COATINGS
47. 3.1. The designation of coatings is written in next order:
48. a) designation paintwork material the outer layer of the coating according to GOST 9825-73;
49. b) coating class according to Table 2 or according to the relevant normative and technical documentation, indicating its designation;
50. c) designation of operating conditions:
51. in terms of the impact of climatic factors - a group of operating conditions in accordance with GOST 9.104-79;
52. in terms of the impact of special environments - according to Table 1.
53. 3.2. It is allowed in the designation of the coating instead of the paintwork material of the outer layer of the coating to write the designation of paintwork materials in technological sequence application (primer, putty, etc.) indicating the number of layers or indicate the coating in accordance with standards or specifications.
54. 3.1, 3.2. (Changed edition, Rev. N 3).
55. 3.3. Designation of paintwork material, coating class and designation of operating conditions are separated by dots. Under the influence of various operating conditions, their designations are separated by a dash. Examples of coating designations are given in Table 3.
56. Table 3
57. Coating designation Coating characteristicsEnamel ML-152 blue. VI.U1 Coating with blue enamel ML-152 according to class II, operated outdoors in a temperate macroclimatic regionEnamel XC-710 gray. Lacquer XC-76.IV.7/2 Coating with gray enamel XC-710 followed by varnishing with varnish XC-76 according to class IV, operated when exposed to acid solutionsEnamel XB-124 blue V.7/1-T2 Coating with blue enamel XB-124 according to class V, operated under a canopy in an atmosphere polluted by gases of chemical and other industries, in a tropical dry macroclimatic regionPrimer FL-03k brown. VI.U3 Coating with primer FL-03k according to class IV, operated indoors with natural ventilation without artificially controlled climatic conditions in a temperate macroclimatic regionEnamel PF-115 dark gray 896.III.U1 Coating with dark gray 896 enamel PF-115 according to class III, operated outdoors in a temperate macroclimatic region
58. (Changed edition, Rev. N 3, 4).
59. 3.4. In the designation of coatings, it is allowed to indicate special operating conditions by the full name.
60. 3.5. If the painted surface is simultaneously or alternately in different operating conditions, then they are all indicated in the designation. In this case, the main condition of operation is put in the first place.
61. 3.6. If a paint coating is preceded by a metallic or non-metallic inorganic coating, then their designations are separated by a slash, with the paint coating designation in second place. For example, a cadmium coating, 6 microns thick, followed by painting with red-brown polyvinyl butyral enamel VL-515 according to class III, for the operation of the coating when exposed to petroleum products:
62. Kd6/Enamel VL-515 red-brown. III. 6/2
63. (Changed edition, Rev. N 3).

Application

1. . (Excluded, Rev. N 3).

Application
to State standard dated July 01, 1975 No. GOST 9.032-74

1. Mandatory
2. Requirements for painted metal surfaces
3. Coating class Name of indicators of the surface to be painted “Moiré” “Shagrenev”high-gloss glossy and glossy with translucent effect semi-gloss semi-matt matt semi-matt and matt semi-mattI Roughness according to GOST 2789-73, microns, not more than 4 4 - - 4 - - Flatness, mm - - Not allowed - - Individual irregularities (height, depth) - - Not allowed - - II Roughness according to GOST 2789-73, microns, not more than, surface: not to be putty 6.3 6.3 6.3 6.3 6.3 20 20 to be puttyed 80 80 80 80 80 80 80 Flatness, mm Separate irregularities (height, depth), mm III Roughness according to GOST 2789-73, microns, not more than, surfaces: not to be putty 10 10 10 10 10 10 80 500 500 not to be putty 1.5 1.5 1.5 1.5 1.5 1,5 1,5 to be puttyed 3 3 3 3 3 3 3 Separate irregularities (height, depth), mm, no more IV Roughness according to GOST 2789-73, microns, not more, surfaces: not to be putty 80 80 80 80 80 80 80 80 to be filled 500 500 500 500 500 500 500 500 Non-flatness, mm, no more, surfaces: not to be putty 2 2 2 2 2 2 2 2 to be filled 3.5 3.5 3.5 3.5 3.5 3,5 3,5 3,5 Separate irregularities (height, depth), mm, no more than 2 2 2 2 2 2 2 2 V Roughness according to GOST 2789-73, microns, not more, surfaces: not subject to filling - 320 320 320 320 320 320 320 to be putty - Non-flatness, mm, no more, surfaces: not subject to filling - 2.5 2.5 2.5 2.5 2,5 2,5 2,5 to be putty - 4 4 4 4 4 4 4 Separate irregularities (height, depth), mm, no more - 3 3 3 3 3 3 3 VI Roughness according to GOST 2789-73, microns, not more, surfaces: not subject to putty - to be putty - Non-flatness, mm, no more, surfaces: not subject to filling - 4 4 4 4 4 4 to be putty - 5.5 5.5 5.5 5,5 5,5 5,5 5 5 5 VII Roughness according to GOST 2789-73, microns, not more than, surfaces: not subject to putty - - - Not standardizedto be putty - - - " Non-flatness, mm, no more, surfaces: not subject to putty - - - Not standardizedto be putty - - - " Separate irregularities (height, depth), mm, no more - 5 5 5 - - 5

   Norm for obtaining coatings
   smooth									embossed
   plain							patterned (hammer)
   deep comatose		glossy and semi-gloss
   -		-
   Not allowed		-		-
   Not allowed		-		-
   6,3		20
   80		80
   Not allowed
   Not allowed
   10		80
   500		500
   1,5		1,5
   3		3
   Not allowed
   80
   500
   2
   3,5
   2
   320
   Not standardized
   2,5
   4
   3
   Not standardized
   "
   4		4
   5,5		5,5
   5		5
   Not standardized
   "
   Not standardized
   "
   5		5

4. Notes:
5. 1. The “-” sign means that the use of coatings for this class is unacceptable or not economically feasible.
6. 2. For all classes of coatings, nicks, unevenly cut edges, sharp edges and corners at the transition points from one section to another are not allowed.
7. 3. When painting cast parts weighing more than 10 tons, an increase in flatness by 2 mm is allowed for classes III-IV.
8. 4. For products with a surface to be painted over 5 m, an increase in flatness by 2.5 mm for class III, by 3.5 m for classes IV-VI is allowed.
9. 5. When painting cast parts weighing more than 5 tons for III and IV classes, it is allowed to increase the surface roughness to be putty up to 630 microns.
10. 6. For class I coatings, only local filling is allowed.
11. 7. Individual surface irregularities are understood as irregularities with dimensions (length or width) of not more than 20 mm.
12. 8. The requirements for surface non-flatness are given for flat surfaces with a maximum dimension of more than 500 m. When assessing surface non-flatness, individual irregularities are not taken into account.
13. 9. For surfaces subjected to filling, under coatings of class II, individual irregularities up to 1 mm high are allowed.

This standard applies to paint coatings (hereinafter referred to as coatings) of product surfaces and establishes groups, technical requirements and designations of coatings.

1. COATING GROUPS

1.1. Depending on the purpose, the coatings are divided into groups, established in Table 1.

Table 1

Note. To designate the operating conditions of heat-resistant coatings, add the value of the limiting temperature, for example, 160 ° C.

If necessary, the value of the limiting temperature is also added to the designation of the operating conditions of other coatings, for example, 60 ° C, 150 ° C, 200 ° C.

Section 1

1. TECHNICAL REQUIREMENTS

2.1. Coatings must meet the requirements specified in Table 2.

table 2

Notes:

1. In technically justified cases, it is allowed to use high-gloss coatings for classes III-IV, glossy coatings for classes V-VII. At the same time, the norms for high-gloss coatings of III-IV classes must correspond to the norms for glossy coatings, glossy V-VII classes - for semi-gloss.

1. For products with a surface area of ​​less than 1 m2 for classes I-III, the number of inclusions is recalculated for this area, if not an integer is obtained, then the value is rounded up.

The table shows the size of one inclusion. When evaluating the coating, all inclusions visible under the conditions of clause 2.6 are taken into account. For coatings of all classes, a different number of inclusions is allowed, if the size of each inclusion and the total size of inclusions does not exceed that specified for this class in the table.

1. Allowed for classes IV-VII are individual surface irregularities due to the state of the surface to be painted.

1. It is allowed for cast products weighing more than 10 tons to increase the waviness of the coatings by 2 mm for III-VI classes.

1. Allowed for welded and riveted products with a painted surface of more than 5 m, an increase in the waviness of coatings by 2.5 mm for class III, by 3.5 mm for classes IV-VI.

1. It is allowed to apply the classification and designation according to the normative and technical documentation, if the specificity of the non-metallic materials being painted does not allow characterizing the coating class according to Table 2.

2.2. Coating defects that affect the protective properties of the coating (punctures, craters, wrinkling, etc.) are not allowed.

2.3. The requirements for the surface of the metal to be painted are given in mandatory Appendix 2.

Requirements for non-metallic painted surfaces are set in the standards or specifications for the product.

2.4. The requirements for the roughness of a primed or putty surface are given in help application 2a.

2.5. Gloss requirements for coatings are given in Recommended Annex 3.

2.6. The control is carried out in daylight or artificial diffused light, at a distance of 0.3 m from the subject of inspection. The norms of artificial lighting are accepted according to SNiP II-A.9-71.

2.1-2.6. (Changed edition, Rev. N 3, 4).

2.7. Methods for determining the gloss and the presence of coating defects are given in Appendix 4.

The assessment of shagreen with a profiler-profilometer is given in Appendix 5.

(Changed edition, Rev. N 3, 4).

2.8. The quality control of the coating may be carried out on a sample made and approved in accordance with the requirements of standards or technical specifications for the product.

(Changed edition, Rev. N 3).

1. DESIGNATION OF COATINGS

3.1. The designation of coatings is written in the following order:

a) designation of the paintwork material of the outer layer of the coating according to #M12291 1200008480GOST 9825-73#S;

b) coating class according to Table 2 of this standard or according to the relevant regulatory and technical documentation, indicating its designation;

c) designation of operating conditions:

in terms of the impact of climatic factors - a group of operating conditions according to #M12291 1200005221GOST 9.104-79#S;

in terms of exposure to special environments - according to Table 1 of this standard.

3.2. It is allowed in the designation of the coating instead of the paintwork material of the outer layer of the coating to write down the designation of paintwork materials in the technological sequence of application (primer, putty, etc.) indicating the number of layers or designate the coating in accordance with standards or specifications.

3.1, 3.2. (Changed edition, Rev. N 3).

3.3. Designation of paintwork material, coating class and designation of operating conditions are separated by dots. Under the influence of various operating conditions, their designations are separated by a dash. Examples of coating designations are given in Table 3.

Table 3

(Changed edition, Rev. N 3, 4).

3.4. In the designation of coatings, it is allowed to indicate special operating conditions by the full name.

3.5. If the painted surface is simultaneously or alternately in different operating conditions, then they are all indicated in the designation. In this case, the main condition of operation is put in the first place.

3.6. If a paint coating is preceded by a metallic or non-metallic inorganic coating, then their designations are separated by a slash, with the paint coating designation in second place. For example, a cadmium coating, 6 microns thick, followed by painting with red-brown polyvinyl butyral enamel VL-515 according to class III, for the operation of the coating when exposed to petroleum products:

Kd6/Enamel VL-515 red-brown. III. 6/2

(Changed edition, Rev. N 3).

Annex 1. (Deleted, Rev. N 3).

APPENDIX 2

Mandatory

Requirements for painted metal surfaces

Notes:

1. The sign “-“ means that the use of coatings for this class is unacceptable or economically unreasonable.

1. For all classes of coatings, nicks, unevenly cut edges, sharp edges and corners at the transition points from one section to another are not allowed.

1. When painting cast parts weighing more than 10 tons, an increase in non-flatness by 2 mm is allowed for classes III-IV.

1. It is allowed for products with a painted surface of more than 5 m, an increase in non-flatness by 2.5 mm for class III, by 3.5 m for classes IV-VI.

1. When painting cast parts weighing more than 5 tons for III and IV classes, it is allowed to increase the surface roughness to be putty up to 630 microns.

1. For class I coatings, only local filling is allowed.

1. Individual surface irregularities are understood as irregularities with dimensions (length or width) of not more than 20 mm.

1. Surface non-flatness requirements are given for flat surfaces with the largest dimension over 500 mm. When assessing the non-flatness of the surface, individual irregularities are not taken into account.

1. For surfaces subjected to filling, under coatings of class III, individual irregularities up to 1 mm high are allowed.

(Changed edition, Rev. N 3, 4).

APPENDIX 2a

Reference

Requirements for the roughness of a primed or putty surface for

different classes of coatings

Note. The sign “-“ means that the use of coatings for this class is unacceptable or economically unreasonable.

Coating Gloss Requirements

Appendix 2a, 3 (Changed edition, Rev. N 2).

Methods for determining gloss and coating defects

(Changed edition, Rev. N 3, 4).

Assessment of shagreen with a profiler-profilometer

Shagreenness is assessed by a profilograph-profilometer of the coating surface in accordance with the instructions for the device with a maximum sensor stroke length of 40 mm. The recommended vertical zoom when recording is 2000-4000 times, horizontal - 4 times.

Shagreen is characterized by the height and base of irregularities. According to the profilogram, the average height and average base are determined in millimeters for five maximum protrusions:

where is the height of irregularities at five points;

where is the base of irregularities at five points.

An estimate of the size of shagreen is given in the table.

(Introduced additionally, Rev. N 4).

The text of the document is verified by:

official publication

M.: Publishing house of standards, 1990