Requirements for paintwork. Requirements for paint and varnish coatings. An example of choosing coatings based on decorative properties
one system protection against corrosion and aging
PAINT COATINGS Groups, technical requirements and designations
Unified, system of corrosion and aging protection. Paint coatings. Groups, technical requirements and designations
GOST 9.032-74
Date of introduction 07/01/75
This standard applies to paint and varnish coatings (hereinafter referred to as coatings) on the surfaces of products and establishes groups, technical requirements and designations of coatings.1. COATING GROUPS
1.1. Depending on the purpose, coatings are divided into groups established in table. 1.
Table 1
Coating group |
terms of Use |
Designation of operating conditions |
Weatherproof |
Climatic factors |
According to GOST 9.104-71 |
Waterproof |
Marine, fresh iodine and its vapors |
|
Fresh water and its vapors |
||
Special |
X-ray and other types of radiation, deep cold, open flame, biological influences, etc. |
|
X-ray and other types of radiation |
||
Deep cold (temperature below minus 60 °C) |
||
Impact of biological factors |
||
Oil and petrol resistant |
Mineral oils and lubricants, gasoline, kerosene and other petroleum products |
|
Mineral oils and lubricants |
||
Gasoline, kerosene and other petroleum products |
||
Chemical resistant |
Various chemical reagents |
|
Aggressive gases, vapors |
||
Solutions of acids and acid salts |
||
Solutions of alkalis and basic salts |
||
Solutions of neutral salts |
||
Heat resistant |
Temperature above 60 °C |
|
Electrical insulating and electrical conductive |
Electricity, voltage, electric arc and surface discharges |
|
Electrical insulating |
||
Electrically conductive |
||
Note. The following value is added to the designation of operating conditions for heat-resistant coatings: limit temperature, for example, 8160°С.
If necessary, the maximum temperature value is added to the designation of operating conditions for other coatings, for example, 460°C. 6/1150°c. 9200°C.
Sec. 1. (Changed edition, Amendment No. 3). 2. TECHNICAL REQUIREMENTS
2.1. Coatings must meet the requirements established in table. 2.
table 2
Notes:
2. In technically justified cases, it is allowed to use high-gloss coatings for classes III-IV, glossy ones for V-VII. At the same time, the standards for high-gloss coatings of classes III-IV must correspond to the standards for glossy coatings, glossy coatings of classes V-VII - for semi-matte.
3. For products with a painted surface area of less than 1 for classes I-III, the number of inclusions is recalculated to given area, if the result is not an integer, then the value is rounded towards a larger number. The table shows the size of one inclusion. When assessing 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 the inclusions does not exceed that indicated for this class in the table.
4. For classes IV-VII, individual surface unevenness is allowed, due to the condition of the surface being painted.
5. For cast products weighing more than 10 tons, it is allowed to increase the waviness of coatings by 2 mm for classes III - IV.
6. Allowed for welded and riveted products with a painted surface of more than 5, increasing 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 classification and designation according to regulatory and technical documentation if the specifics of the non-metallic materials being painted do not allow characterizing the coating class according to Table. 2.
(Changed edition, Amendment No. 4). 2.2. Coating defects that affect the protective properties of the coating (punctures, craters, wrinkling, etc.) are not allowed. 2.3. Requirements for the surface of the metal to be painted are given in mandatory Appendix 2.
Requirements for non-metallic painted surfaces are established in standards or technical specifications for the product. 2.4. Requirements for the roughness of a primed or putty surface are given in reference appendix 2a.2.5. Requirements for the gloss of coatings are given in recommended Appendix 3.2.6. Controls are carried out under 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.9-71.2.7. Methods for determining gloss and the presence of coating defects are given in recommended Appendix 4. Evaluation of shagreen by a profiler-profilometer is given in Appendix 5.
(Changed edition, Amendment No. 4).
2.8. Quality control of the coating may be carried out using a sample manufactured and approved in accordance with the requirements of standards or technical specifications for the product.
Sec. 2. (Changed edition, Amendment No. 3). 3. DESIGNATION OF COATINGS
3.1. The designation of coatings is written in the following order:
a) designation paint and varnish material outer coating layer according to GOST 9825-73:
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 GOST 9.104-79;
- in terms of exposure to special environments - according to table. 1 of this standard.
3.2. It is allowed to write in the designation of the coating instead of the paint and varnish material of the outer layer of the coating the designation of the paint and varnish materials in technological sequence application (primer, putty, etc.) indicating the number of layers or designate the coating in accordance with standards or specifications.
(Changed edition, Amendment No. 3). 3.3. The designation of the paint and varnish material, the coating class and the designation of operating conditions are separated by dots. When exposed to different operating conditions, their designations are separated by a “dash”. Examples of coating designations are given in table. 3.
Table 3
Coverage designation |
Coating characteristics |
Enamel ML-152 blue. II.У1 |
Coating with blue enamel ML-152 according to class II, used on outdoors temperate macro-climatic region |
Enamel XC-710 gray. Varnish XC-76.IV.7/2 |
Coating with gray enamel XC-710 followed by varnishing with XC-76 varnish according to class IV, used when exposed to acid solutions |
Enamel XB-124 blue. V.7/1-T2 |
Coating with blue enamel XB-124 according to class V, used under a canopy in an atmosphere polluted by gases from chemical and other industries, in a tropical dry macroclimatic region |
Primer FL-03k brown. VI.UZ |
Coatings with primer FL-03k according to class VI, used in indoors With natural ventilation without artificially controlled climatic conditions in a temperate macroclimatic region |
Enamel PF-115 dark gray 896.III.U1 |
Coating with dark gray 896 PF-115 enamel of class III, used outdoors in a temperate macroclimatic region |
(Changed edition, Amendment No. 3,4).
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 different conditions operation, then they are all indicated in the designation. In this case, the main condition of operation is put in 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 fraction line, and the designation of the paint coating is placed 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, Amendment No. 3).
Appendix 1. (Deleted, Amendment No. 3).
APPENDIX 2
Mandatory
Requirements for painted metal surfaces
![](https://i1.wp.com/ess-ltd.ru/elektro/images/gost-9032-74-tab2.png)
Notes:
1. The sign “-” indicates 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 non-flatness by 2 mm is allowed for classes III-VI.
4. For products with a painted surface of more than 5, it is allowed to increase non-flatness by 2.5 mm for class III, by 3.5 mm for classes IV-VI.
5. When painting cast parts weighing more than 5 tons for classes III and IV, it is allowed to increase the roughness of the surface to be puttied to 630 microns.
6. For class I coating, only local puttying is allowed.
7. Individual surface irregularities mean irregularities with dimensions (length or width) of no more than 20 mm.
8 Requirements for surface non-flatness are given for flat surfaces With largest size more than 500 mm. When assessing the non-flatness of a surface, individual irregularities are not taken into account
9. For surfaces subject to puttying, under class III coatings, the presence of individual irregularities up to 1 mm in height is allowed.
(Changed edition, Amendment No. 3,4). APPENDIX 2a
Information
Requirements for the roughness of a primed or putty surface for various classes of coatings
![](https://i1.wp.com/ess-ltd.ru/elektro/images/gost-9032-74-tab3.png)
Note. The sign “-” means that the use of coatings for this class is unacceptable or economically impractical.
(Changed edition, Amendment No. 3). APPENDIX 3
Recommended
Requirements for gloss of coatings
Gloss level, %, for coatings |
||||||||||
relief |
||||||||||
plain |
patterned (hammer) |
"moire" |
"shagreen" |
|||||||
high- |
glossy, in |
semi-glossy |
semi-matte |
deep matte |
glossy |
semi-glossy |
semi-matte |
semi-matte |
||
No more than 3 |
||||||||||
(Changed edition, Amendment No. 3)
Methods for determining gloss and defects of coatings
Appearance indicator |
Determination method |
Gloss meter FB-2 on products or witness samples with a coating obtained using the technology adopted for products, or visually by comparison with a sample approved in accordance with the technical specifications for coatings |
|
Inclusions: |
Visually |
Visually by comparison with a sample approved in accordance with the technical specifications for coatings, when arbitrated with a profilograph-profilometer type 1 according to GOST 19300-86 or other devices of a similar type |
|
Risks, touches |
Visually, by comparison with a sample approved in accordance with the normative and technical documentation for coatings |
Heterogeneity of the pattern |
|
Variation of shades |
|
Waviness of the coating |
A straight edge 500 mm long, placed edgewise on the surface being checked. Using another ruler or feeler gauge, the maximum gap between the surface and the ruler is measured. The ruler is installed in such a way that the greatest waviness is determined on the surface being tested |
(Changed edition, Amendment No. 3, 4). APPENDIX 5
Recommended
Evaluation of shagreen by a profiler-profilometer
The assessment of shagreen by a profilograph-profilometer of the surface of the coating is carried out in accordance with the instructions for the device when maximum length sensor stroke 40 mm. Recommended vertical magnification when recording is 2000-4000 times, horizontal - 4 times.
Shagreen is characterized by height h and base t of irregularities. The profilogram determines average height and the average base in millimeters for the five maximum projections: Where
- height of unevenness at five points;
where is the base of the irregularities at five points.
An estimate of the size of shagreen is given in the table.
(Introduced additionally, Amendment No. 4).
GOST 9.032-74 ESZKS. Paint and varnish coatings. Groups, technical requirements and designations (with Amendments No. 1-4)
Adopted September 3, 1974State Committee of Standards of the Council of Ministers of the USSR
- GOST 9.032-74
- Group T95
- INTERSTATE STANDARD
- Unified system of protection against corrosion and aging
- PAINT COATINGS
- Groups, technical requirements and designations
- Unified system corrosion and aging protection.
- Coatings of lacquers and paints. Classification and designations
- MKS 25.220.60
- 87.020
- OKSTU 0009
- Date of introduction 1975-07-01
- By Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated September 3, 1974 N 2089, the introduction date was set at 07/01/75
- The validity period was removed by Decree of the USSR State Standard of March 13, 1989 N 455
- INSTEAD GOST 9894-61
- EDITION with Amendments No. 1, 2, 3, 4, approved in June 1976, March 1980, February 1986, March 1989 (IUS 7-76, 5-80, 5-86, 5-89 )
- This standard applies to paint and varnish coatings (hereinafter referred to as coatings) of product surfaces and establishes groups, technical requirements and designations of coatings.
- 1. GROUPS OF COATINGS
- 1.1.
- Depending on the purpose, coatings are divided into groups established in Table 1.
-
Table 1 Coating group Operating conditions Designation of operating conditions Weather-resistant Climatic factors According to GOST 9.104-79 Water resistant Sea, fresh water and its vapors 4 Fresh water and its vapors 4/1 Sea water 4/2 Special X-ray and other types of radiation, deep cold, open flame, biological effects, etc. 5 X-rays and other types of radiation 5/1 Deep cold (temperature below minus 60 °C) 5/2 Open flame 5/3 Impact of biological factors 5/4 Oil and petrol resistant Mineral oils and lubricants, gasoline, kerosene and other petroleum products 6 Mineral oils and lubricants 6/1 Gasoline, kerosene and other petroleum products 6/2 Chemical resistant Various chemicals 7 Aggressive gases, vapors 7/1 Solutions of acids and acid salts 7/2 Solutions of alkalis and basic salts 7/3 Solutions of neutral salts 7/4 Heat-resistant Temperatures above 60 °C 8 Electrically insulating and electrically conductive Electric current, voltage, electric arc and surface discharges 9 Electrical insulating 9/1 - Electrically conductive 9/2
- Note. The maximum temperature value, for example, 160 °C, is added to the designation of operating conditions for heat-resistant coatings.
- If necessary, the maximum temperature value is also added to the designation of operating conditions for other coatings, for example, 60 °C, 150 °C, 200 °C.
- Section 1 (Changed edition, Amendment No. 3).
- 2. TECHNICAL REQUIREMENTS
- 2.1.
-
Coatings must meet the requirements established in Table 2. table 2 Coating class Name of defect Standard for coatings smooth reliefplain patterned (hammer) “Moire” “Shagrenevykh” high-gloss glossy, including with a glaze effect semi-gloss semi-matte matte deep-matte glossy and semi-gloss semi-matte and matte quantity, pcs/m, no more - size, mm, no more Not allowed - - 0,2 - - -- distance between inclusions, mm, not less - Shagreen Not allowed - - Not allowed - - -- Drips Not allowed - - Not allowed - - -- Strokes, risks Not allowed - - Not allowed - - -- Waviness, mm, no more Not allowed - - Not allowed - - -- Various shades Not allowed - - Not allowed - - -- II Inclusions: quantity, pcs/m, no more than 4 4 4 4 8 8 8 8 8 size, mm, no more than 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0,5 distance between inclusions, mm, no more than 100 100 100 100 100 100 100 100 100 Shagreen Minor is allowed Not standardized Strokes, risks Individuals are allowed Drips Not allowed Waviness, mm, no more Not allowed Various shades Not allowed Heterogeneity of the pattern Not standardized Not allowed III Inclusions: quantity, pcs/m, no more - 10 15 15 25 25 25 25 25 size, mm, no more than - 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0,5 distance between inclusions, mm, not less - 50 50 50 30 30 30 30 30 Shagreen - Minor is allowed Not standardized Drips - Not allowed Strokes, risks - Individuals are allowed Waviness, mm, no more than - 1.5 1.5 1.5 1.5 1.5 1.5 1,5 1,5Variation of shades - Not allowed Heterogeneity of the pattern - Not standardized Not allowed IV Inclusions: quantity, pcs/dm, no more - 1 1 1 2 2 2 2 2size, mm, no more than - 1.0 1.0 1.0 1.0 1.0 1.0 1,0 1,0distance between inclusions, mm, not less - 10 10 10 10 10 10 10 10Shagreen - Allowed Not standardized Drips - Not allowed Strokes, risks - Individuals are allowed Waviness, mm, no more - 2 2 2 2 2 2 2 2Various shades - Not allowed Heterogeneity of the pattern - Not standardized Not allowed V Inclusions: quantity, pcs/dm, no more - - 4 4 4 4 4 4 4size, mm, no more - - 2.0 2.0 2.0 2.0 3.0 3,0 3,0Shagreen - - Allowed Not standardized Drips - - Individuals are allowed Strokes, risks - - Allowed Waviness, mm, no more - - 2.5 2.5 2.5 2.5 2.5 2,5 2,5Variation of shades - - Not allowed Heterogeneity of the pattern - - Not standardized Not allowed VI Inclusions: quantity, pcs/dm, no more - - 8 8 8 8 8 8 8size, mm, no more - - 3.0 3.0 3.0 3.0 3.0 3,0 3,0Shagreen - - Allowed Not standardized Drips - - Individuals are allowed Strokes, risks - - Allowed Waviness, mm, no more - - 4.0 4.0 4.0 4.0 4.0 4,0 4,0Various shades - - Allowed Heterogeneity of the pattern - - Not standardized Allowed VII Inclusions - - Not standardized -- Not standardizedShagreen - - Not standardized -- Not standardizedDrips - - Not standardized -- Not standardizedStrokes, risks - - Not standardized -- Not standardizedWaviness, mm, no more - - Not standardized -- Not standardizedVariation of shades - - Not standardized -- Not standardizedHeterogeneity of the pattern - - Not standardized -- Not standardized - Notes:
- 2. In technically justified cases, it is allowed to use high-gloss coatings for classes III-IV, glossy ones for V-VII. At the same time, the standards for high-gloss coatings of classes III-IV must correspond to the standards for glossy coatings, glossy coatings of classes V-VII - for semi-matte.
- 3. For products with a painted surface area of less than 1 m for classes I-III, the number of inclusions is recalculated for a given area; if the result is not a whole number, then the value is rounded towards a larger number. The table shows the size of one inclusion. When assessing 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 the inclusions does not exceed that indicated for this class in the table.
- 4. For classes IV-VII, individual surface irregularities due to the condition of the surface being painted are allowed.
- 5. For cast products weighing more than 10 tons, it is allowed to increase the waviness of coatings by 2 mm for classes III-VI.
- 6. It is allowed for welded and riveted products with a painted surface of more than 5 m to increase the waviness of coatings by 2.5 mm for class III, by 3.5 mm for classes IV-VI.
- 7. It is allowed to use classification and designation according to regulatory and technical documentation, if the specifics of the non-metallic materials being painted do 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.
- Requirements for the surface of the metal being painted are given in Appendix 2.
- Requirements for non-metallic painted surfaces are established in standards or technical specifications for the product.
- 2.4.
- Requirements for the roughness of a primed or putty surface are given in Appendix 2a.
- 2.5.
- Requirements for the gloss of coatings are given in Appendix 3.
- 2.6.
- Inspection is carried out in daylight or artificial diffused light, at a distance of 0.3 m from the subject of inspection. Artificial lighting standards are adopted according to SNiP II-A.9-71.
- 2.7.
- Methods for determining gloss and the presence of coating defects are given in Appendix 4.
- The assessment of shagreen by a profiler-profilometer is given in Appendix 5.
- 2.1-2.7.
- (Changed edition, Amendment No. 3, 4).
- 2.8.
- Quality control of the coating may be carried out using a sample manufactured and approved in accordance with the requirements of standards or technical specifications for the product.
- 3. DESIGNATION OF COATINGS
- 3.3.
- The designation of the paint and varnish material, the coating class and the designation of operating conditions are separated by dots. When exposed to different operating conditions, their designations are separated by a “dash”. Examples of coating designations are given in Table 3.
-
Table 3 Coating designation Coating characteristics Enamel ML-152 blue. VI.U1 Coating with blue enamel ML-152 according to class II, used in the open air of a temperate macroclimatic region Enamel XC-710 gray. Varnish XC-76.IV.7/2 Coating with gray enamel XC-710 followed by varnishing with XC-76 varnish according to class IV, used when exposed to acid solutions Enamel XB-124 blue V.7/1-T2 Coating with blue enamel XB-124 according to class V, used under a canopy in an atmosphere polluted by gases from chemical and other industries, in a tropical dry macroclimatic region Primer FL-03k brown. VI.U3 Primer coating FL-03k according to class IV, used indoors with natural ventilation without artificially controlled climatic conditions in a temperate macroclimatic region - Enamel PF-115 dark gray 896.III.U1 Coating with dark gray 896 enamel PF-115 according to class III, used outdoors in a temperate macroclimatic region
- (Changed edition, Amendment No. 3, 4).
- 3.4.
- In the designation of coatings, it is allowed to indicate special operating conditions by full name.
- 3.5.
- If the painted surface is simultaneously or alternately exposed to different operating conditions, then they are all indicated in the designation. In this case, the main condition of operation is put in 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 fraction line, and the designation of the paint coating is placed 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:
3.6.
Kd6/Enamel VL-515 red-brown. III. 6/2 (Changed edition, Amendment No. 3). Application
- . (Excluded, Amendment No. 3).
- To
-
State standard dated July 1, 1975 No. GOST 9.032-74 Coating class Name of defect Standard for coatings smooth Mandatory Requirements for painted metal surfaceshigh-gloss glossy and glossy with glaze effect semi-gloss semi-matte matte deeply comatose glossy and semi-glossy semi-matte and matte semi-matteI Roughness according to GOST 2789-73, microns, no more than 4 4 - - 4 - - - -Non-flatness, mm Not allowed - - Not allowed- - - -Individual irregularities (height, depth) Not allowed - - Not allowed- - - -II Roughness according to GOST 2789-73, microns, no more, surface: not subject to putty 6.3 6.3 6.3 6.3 6.3 6,3 20 20 20subject to putty 80 80 80 80 80 80 80 80 80Non-flatness, mm Not allowed Individual irregularities (height, depth), mm Not allowed III Roughness according to GOST 2789-73, microns, no more, surface: not subject to putty 10 10 10 10 10 10 80 10 80500 500 500 500not subject to putty 1.5 1.5 1.5 1.5 1.5 1,5 1,5 1,5 1,5subject to putty 3 3 3 3 3 3 3 3 3Individual irregularities (height, depth), mm, no more Not allowed IV Roughness according to GOST 2789-73, microns, no more, surface: not subject to putty 80 80 80 80 80 80 80 80 80subject to putty 500 500 500 500 500 500 500 500 500Non-flatness, mm, no more, of the surface: not subject to putty 2 2 2 2 2 2 2 2 2subject to putty 3.5 3.5 3.5 3.5 3.5 3,5 3,5 3,5 3,5Individual irregularities (height, depth), mm, no more than 2 2 2 2 2 2 2 2 2V Roughness according to GOST 2789-73, microns, no more, surface: not subject to putty - 320 320 320 320 320 320 320 320subject to putty - Not standardized Non-flatness, mm, no more, of the surface: not subject to putty - 2.5 2.5 2.5 2.5 2,5 2,5 2,5 2,5subject to putty - 4 4 4 4 4 4 4 4Individual irregularities (height, depth), mm, no more - 3 3 3 3 3 3 3 3VI Roughness according to GOST 2789-73, microns, no more, surface: not subject to putty - Not standardized subject to putty - " Non-flatness, mm, no more, of the surface: not subject to putty - 4 4 4 4 4 4 4 4subject to putty - 5.5 5.5 5.5 5,5 5,5 5,5 5,5 5,55 5 5 5 5VII Roughness according to GOST 2789-73, microns, no more, surface: not subject to putty - Not standardized - - Not standardizedsubject to putty - " - - "Non-flatness, mm, no more, of the surface: not subject to putty - Not standardized - - Not standardizedsubject to putty - " - - "Individual irregularities (height, depth), mm, no more - 5 5 5 5 5 - - 5 - Notes:
- 1. The “-“ sign indicates that the use of coatings for this class is unacceptable or economically impractical.
- 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 non-flatness by 2 mm is allowed for classes III-IV.
- 4. For products with a painted surface of more than 5 m, it is allowed to increase non-flatness by 2.5 mm for class III, by 3.5 m for classes IV-VI.
- 5. When painting cast parts weighing more than 5 tons for classes III and IV, it is allowed to increase the roughness of the surface to be puttied to 630 microns.
- 6. For class I coatings, only local filling is allowed.
- 7. Individual surface irregularities mean irregularities with dimensions (length or width) of no more than 20 mm.
- 8. Requirements for surface non-flatness are given for flat surfaces with a largest dimension of more than 500 m. When assessing surface non-flatness, individual irregularities are not taken into account.
- 9. For surfaces subject to puttying, under coatings of class II, the presence of individual irregularities up to 1 mm in height is allowed.
1. This standard applies to paint and varnish coatings (hereinafter referred to as coatings) of industrial products and establishes general technical requirements for the selection of coatings for decorative properties.
2. Decorative properties mean the properties of the coating that ensure its aesthetic perception.
The decorative properties of the coating are characterized by color, gloss, texture and class according to GOST 9.032-74*.
3. The choice of coating based on decorative properties is carried out at the design stage in the process of artistic design of products.
4a. The finishing options developed during the artistic design process are recorded in a map of the color and texture solution for finishing the product.
(Introduced additionally, Amendment No. 1).
10. Types of harmonious color combinations shown in .
11. An example of choosing coatings based on decorative properties is given in.
ANNEX 1 Mandatory
COATING CLASSES FOR PRODUCTS
Group of industrial products |
Painted surfaces |
Coverage class, not lower |
|
Passenger cars of the highest class (type ZIL-117) and large class (type "Chaika"), medium, small and especially small class (type "Volga", "Moskvich", "Zhiguli", "Zaporozhets") * |
|||
Trucks, trailers and semi-trailers |
|||
Frame, chassis parts |
|||
Metal parts of the platform |
|||
Heavy duty mining dump trucks |
Cabins, components, tail surfaces, battery boxes |
||
External surfaces of fuel and oil tank platforms |
|||
Frames, corners, chassis |
|||
Buses** |
|||
main railways gauge 1520 (1524) mm: locomotive traction (passenger, mail, luggage), electric trains and diesel trains |
Side walls bodies of locomotive-hauled passenger cars |
||
Side walls of cars of electric trains and diesel trains, as well as mail and baggage cars, roof overhangs, frontal parts of the bodies of head cars of electric trains |
|||
The middle part of the roofs, car frames, bogies and boiler rooms |
|||
End walls of carriage bodies |
|||
freight mainline railways of 1520 (1524) mm gauge |
External surfaces |
||
Construction and road machines, self-propelled, mounted and mobile |
Surfaces of machine parts that are in the field of view of people (with the exception of surfaces whose coatings serve a conservation purpose) |
||
Other surfaces of construction and road cars |
|||
Agreecultural machines. Agreecultural equipment |
Facing parts of agricultural machines |
||
Other surfaces of agricultural machines |
|||
Machine tools, forging and casting machines: |
|||
machines of accuracy classes A, B and C according to GOST 8-82* |
Basic surfaces defining appearance machine tools |
||
Surfaces that are visible but do not determine appearance |
|||
* For all-wheel drive vehicles of especially small and medium class, body coverage is not lower than III. ** For a small class bus of the “Yunost” type, the body covering class is not lower than II. |
|||
conventional machines, forging and casting machines |
The main surfaces that determine the appearance of machines and machines |
||
Surfaces that are visible but do not determine appearance |
|||
Surfaces inside machines and machines that are inaccessible for viewing (surfaces of hydraulic and lubrication equipment frames, etc.). |
|||
The main surfaces that determine the appearance of the device |
|||
devices for direct communication with a person, located in the zone of constant visual perception: large, for example, copying machines, aggregative computer equipment (rack consoles, etc.). |
|||
medium-sized ones, for example, calculating machines, desktop keyboard computers, cash registers, analytical instruments - chromatographs, household radio-electronic equipment, etc. |
|||
small, such as portable typewriters, Felix calculating machines, household optical and medical devices |
|||
Devices surrounding a person, but falling into the visual perception zone irregularly: |
|||
large, for example, auxiliary instrumentation panels |
|||
medium, for example, secondary electronic automatic instruments with a recording and display device (potentiometers) |
|||
small ones, for example, pressure gauges, voltage stabilizers, relays, etc. |
|||
Automatic devices in the maintenance of which a person does not participate: |
|||
large ones, for example, carriage scales (platforms); |
|||
medium, for example, meteorological instruments and equipment; |
|||
small, for example, differential pressure gauges and other instruments |
|||
Notes: 1. When several classes are specified for the same surfaces, the specific class is established according to the standards or technical specifications on the product. 2. Classes of coatings for products manufactured for export are established according to the standards or technical specifications for the product. |
APPENDIX 2 Recommended
MAXIMUM ACHIEVEABLE CLASS OF COATINGS FOR ENAMELS AND VARNISHES
Name of material |
Shine, texture of coating |
Maximum achieved class according to GOST 9.032-74* |
|
Melamine |
Smooth plain |
||
ML-1110 according to GOST 20481-80* |
High gloss |
||
ML-197 according to GOST 23640-79* |
|||
High gloss and glossy |
|||
High gloss |
|||
ML-1156 according to GOST 5971-78* |
Glossy |
||
ML-1156 black according to GOST 5971-78* |
Semi-gloss |
||
Glossy |
|||
Glossy and semi-gloss |
|||
ML-279 OP according to GOST 5971-78* |
Semi-matte |
||
ML-279 according to GOST 5971-78* |
|||
Smooth patterned (hammer) |
|||
Semi-gloss |
|||
Semi-matte |
|||
Embossed "Shagreen" |
|||
Semi-matte |
|||
Urea |
Smooth plain |
||
Glossy |
|||
Glossy and semi-gloss |
|||
Semi-gloss |
|||
Semi-matte |
|||
Glossy |
|||
MCh-145 according to GOST 23760-79* |
Glossy and semi-gloss |
||
Pentaphthalic and glypthalic |
|||
High gloss |
|||
PF-163 according to GOST 5971-78* |
Glossy |
||
Semi-matte |
|||
Semi-gloss |
|||
Deep matte |
|||
Nitrocellulose |
|||
NTs-11 according to GOST 9198-83* |
High gloss |
||
Glossy |
|||
NTs-25 according to GOST 5406-84* |
|||
Glossy |
|||
NTs-256 according to GOST 25515-82* |
|||
NTs-5123 according to GOST 7462-73* |
Semi-gloss and semi-matte |
||
Glossy |
|||
Semi-gloss |
|||
NTs-1125 according to GOST 7930-73* |
Semi-gloss and semi-matte |
||
Semi-matte |
|||
Semi-gloss |
|||
Semi-matte |
|||
Varnish NTs-134 with aluminum powder |
|||
Epoxy and epoxy ester |
|||
Glossy |
|||
Glossy and semi-gloss |
|||
EP-140 according to GOST 24709-81* |
Semi-gloss |
||
EP-51 according to GOST 9640-85* |
|||
Semi-gloss and matte |
|||
EP-773 according to GOST 23143-83* |
Semi-matte |
||
Glossy |
|||
Glossy and semi-gloss |
|||
EF-1118 PG according to GOST 5971-78* |
Semi-gloss |
||
EF-1118 PM according to GOST 5971-78* |
Semi-matte |
||
EF-1118 M according to GOST 5971-78* |
|||
EP-525 according to GOST 22438-85* |
|||
Semi-gloss |
|||
Semi-gloss |
|||
Glossy |
|||
Semi-gloss |
|||
Glossy |
|||
Enamels: |
|||
Glossy |
|||
PF-188 according to GOST 24784-81* |
|||
Semi-gloss |
|||
Deep Matte |
|||
Semi-matte and semi-gloss |
|||
PF-218 according to GOST 21227-93 |
|||
Semi-gloss |
|||
Semi-gloss |
|||
Semi-matte |
|||
ХВ-1100 according to TU 6-10-1301-83 |
|||
Matte and semi-matte |
|||
Semi-matte |
|||
Semi-matte and matte |
|||
XC-119 according to GOST 21824-76* |
|||
HS-119 E according to GOST 21824-76* |
|||
EP-255 according to GOST 23599-79* |
Semi-gloss and semi-matte |
||
Oil and alkyd styrene |
|||
Semi-matte |
|||
Semi-gloss |
|||
Glossy |
|||
Polyester unsaturated |
|||
Glossy |
|||
High gloss and glossy |
|||
Polyacrylic |
|||
Semi-matte |
|||
Glossy |
|||
High gloss |
|||
Glossy |
|||
Glossy and semi-gloss |
|||
Semi-matte |
|||
Glossy |
|||
Semi-matte |
|||
Glossy |
|||
Semi-matte |
|||
Glossy |
|||
Glossy |
|||
Glossy |
|||
Phenolic |
|||
Glossy and semi-gloss |
|||
Semi-matte |
|||
Rubber |
|||
Semi-gloss |
|||
Polyvinyl acetal |
|||
Organosilicon |
|||
Semi-gloss |
|||
KO-88 according to GOST 23101-78 |
|||
Semi-gloss and semi-matte |
|||
Semi-matte and matte |
|||
Smooth plain |
|||
Semi-gloss |
|||
Polyurethane |
|||
High gloss |
|||
Glossy |
|||
Alkyd-urethane |
|||
Glossy |
|||
Oily |
Embossed "Moire" |
||
Semi-matte and matte |
|||
Bituminous |
Smooth plain |
||
Rosin |
|||
EF-083, EF-083 L |
|||
Notes: GOST 9.402-80*
Dyeing method
Coating drying method
Degreasing
Pneumatic spray
Convective
Phosphating
Passivation
Chemical oxidation
Anodic oxidation
Mechanical cleaning sanding paper No. 5-4 according to GOST 10054-82*
Mechanical cleaning with electrocorundum up to No. 6 according to GOST 3647-80*
Degreasing
Pneumatic spray
Convective
Phosphating
Natural
Passivation
Sputtering in an electric field
Thermoradiation-convective
Etching
Chemical oxidation
Electrodeposition
Anodic oxidation
Mechanical cleaning with sandpaper No. 6-5 according to GOST 10054-82*
Mechanical cleaning with electrocorundum up to No. 12 according to GOST 3647-80*
Degreasing
Pneumatic spray
Convective
Phosphating
Natural
Passivation
Sputtering in an electric field
Thermoradiation
Etching
Thermoradiation-convective
Chemical oxidation
Electrodeposition
Anodic oxidation
Airless spray
Mechanical cleaning with sandpaper No. 25-6 according to GOST 10054-82*
Hydrojet cleaning with sand no larger than 0.5 mm
Mechanical cleaning with electrocorundum up to No. 25 according to GOST 3647-80*
Degreasing
Pneumatic spray
Phosphating
Passivation
Sputtering in an electric field
Etching
Chemical oxidation
Electrodeposition
Anodic oxidation
Airless spray
Mechanical cleaning with sandpaper
Jet dousing with exposure to solvent vapor
Shot blasting, shot blasting, hydrojet cleaning with a shot size of no more than 0.8 mm
Dipping
Galting
Mechanical cleaning with metal brushes
Mechanical cleaning with electrocorundum
* - From January 1, 2006, GOST 9.402-2004 comes into force (hereinafter).
Notes:
1. For coatings with putty, surface preparation operations before painting are not standardized.
2. It is allowed to use other surface preparation operations, in addition to those indicated in the table, that ensure the required quality of the painted metal surface in accordance with GOST 9.032-74* and other methods of painting and drying that ensure the required quality of the coating.
3. For class IV coatings, the number of abrasive paper and electric wire is not regulated.
APPENDIX 5 Information
TYPES OF HARMONIOUS COLOR COMBINATIONS
1. The use of paint and varnish coating colors to create appropriate color schemes for products is determined by the psychological (emotional) and physiological impact of individual colors and color combinations on a person.
When choosing color combinations of coatings, their harmony should be the first and main condition.
2. To receive harmonious combinations colors, it is necessary that there is a certain relationship between the colors (contrast or similarity between colors in color tone, light or saturation).
3. The relationship between colors is achieved using the principles of choosing color combinations along the color wheel (Fig. 1).
Color circle
F - yellow; ZhO - yellow-orange; O - orange; KO - red-orange; K - red; P - purple; FP - violet-purple; F - purple; C - blue; SZ - blue-green; Z - green; ZhZ - yellow-green; I, II, Ш, IV - color zones
Crap. 1
4. When choosing color combinations, take into account the characteristics of the four psychological optimal primary colors - yellow (221), red (7), blue (427), green (324) and intermediate ones - orange, violet-purple, yellow-green.
5. Color combinations are divided into five main groups according to psychophysiological characteristics: contrasting, related, related-contrasting, equitonal, complex.
9. The car is operated in atmospheric conditions temperate and tropical climates, becomes contaminated with road dust, dirt and is subject to periodic washing with hot and cold water using brushes. The time between repairs is 3 years, the car is constantly maintained.
10. The specified operating conditions are satisfied by paint and varnish coatings obtained on the basis of melamine-alkyd enamel ML-12 and perchlorovinyl enamel XB-110.
The coating system, consisting of two layers of ML-12 enamel applied to a primed surface, is stable in atmospheric conditions of temperate and tropical climates for 3 years.
The coating system, consisting of two layers of XB-110 enamel applied to a phosphated and primed surface, is also stable in temperate and tropical climates for 3 years.
11. In terms of color, texture, gloss and class of enamel ML-12 and XB-110 meet the requirements: the color of enamel ML-12 is orange (121, 128), the color of enamel XB-110 is yellow (285, 286), coatings according to the recommended - smooth , glossy (ML-12), semi-gloss (XB-110), the maximum achieved coating class is II for ML-12 enamel and III for XB-110 enamel.
12. Taking into account the level of production of the painting area (production - serial, painting on continuous conveyors using pneumatic spraying or spraying in electric field, drying in thermoradiation drying chambers at a temperature of 130 ºС), you should choose ML-12 enamel, which is applied by the specified method and has a thermoradiation drying mode at a temperature of 130 ºС for 20 minutes.
Date of introduction 01.01.78
The standard establishes terms and definitions used in science, technology and production related to paint and varnish coatings.The terms established by this standard are mandatory for use in all types of documentation, textbooks, teaching aids, technical and reference literature. The given definitions can, if necessary, be changed in the form of presentation, without violating the boundaries of concepts. There is one standardized term for each concept. The use of synonymous terms of a standardized term is prohibited. Synonyms that are unacceptable for use are given in the standard as a reference and are designated “NDP”. For individual standardized terms, the standard indicates their short forms for reference, which are permitted to be used in cases that exclude them different interpretation. In the case where the essential features of a concept are contained in the literal meaning of the term, the definition is not given, and a dash is placed in the “Definition” column. The appendix contains terms and definitions used both in the field of paint and varnish coatings and other areas of science and technology and in production. The standard provides an alphabetical index of the terms it contains. Standardized terms are in bold, their short form is in light, and unacceptable synonyms are in italics.
GENERAL CONCEPTS TECHNOLOGY FOR PRODUCING PAINT COATINGS TYPES OF PAINT COATINGS BASIC PROPERTIES OF PAINT COATINGS TYPES OF DESTRUCTION OF PAINT COATINGS ALPHABETICAL INDEX APPENDIX Recommended INFORMATION DATA |
Definition |
GENERAL CONCEPTS |
1. Coating | According to GOST 9.008 | 2. Paintwork | 2a. Paint system | Multilayer coating in which each layer performs a specific function | 3. Surface to be painted | According to GOST 28246-89 | NDP. Substrate | 4. Obtaining paint and varnish coating | Technological process, including the operations of preparing the surface to be painted, painting and drying | 5. Coloring | Applying paint and varnish material to the surface to be painted | 5a. Padding | Application of intermediate layers of paint and varnish material that has good adhesion to the surface being painted and the next layer of paint and varnish and is intended to improve protective properties coating systems | 5 B. Puttying | Leveling a painted or painted surface using putty | 6. Formation of paint coating | The physical or chemical process of coating formation. | Note. An example of a physical process is the evaporation of a solvent, an example chemical process is polycondensation, polymerization, polyaddition, etc. | 7. Compatibility of paint layers | The ability of layers of paint and varnish material to form a coating | Compatibility | 8. Revealing layer of paintwork | A layer of paint coating used to identify defects in putty and primer coatings | Revealing layer | 9. Loose paint film | Paint coating separated from the surface to be painted | 10. Outer coating layer | According to GOST 9.008-82 | 11. Texture of paintwork | The structure of the outer layer of paintwork | 12. Durability of paintwork | The ability of a paint coating to maintain specified properties | 13. Paint life | The period during which the paint coating retains its specified properties | 14. Durability of paintwork | The ability of a paint coating to maintain specified properties for a specified period | 15. Aging of paintwork | The process of irreversible changes in the structure and (or) composition of a paint coating that occurs over time |
TECHNOLOGY FOR PRODUCING PAINT COATINGS |
Staining methods |
16. Dip dyeing | 17. Fill dyeing | 18. Inkjet painting pouring | 19. Electrodeposition painting | Painting the surface of a product with water-based paint and varnish material under the influence of direct current | 20. Autodeposition staining | Coloring metal surfaces water-dispersed paints and varnishes under the influence of ions formed during the dissolution of the metal | 21. Spray painting | 22. Air Spray Painting | 23. Coloring airless spray | 24. Electrostatic spray painting | 25. Pneumoelectrostatic spray painting | 26. Airless electrostatic spray painting | 27. Fluid Bed Dyeing | 28. Painting with a brush | 29. Roller painting |
Drying methods |
30. Drying paintwork | Drying | 31. Natural drying of paintwork | Drying paintwork under normal conditions | 32. Hot drying of paintwork | Drying paintwork using forced heating. | Note. Hot drying can be carried out by induction, convection, thermoradiation and other heating | 33. Radiation-chemical drying of paintwork | Drying paintwork with a stream of accelerated electrons | 34. Photochemical drying of paintwork | Drying paintwork with ultraviolet radiation | 35. Paint drying temperature | Temperature ensuring the formation of a paint coating with specified properties | Drying temperature |
TYPES OF PAINT COATINGS |
By material |
36. Combined coating | A coating in which a paint coating is combined with a metallic or non-metallic inorganic coating | 37. Primer coating | Paint coating applied directly to the surface to be painted | 38. Putty coating | A paint coating designed to fill uneven surfaces and smooth out the surface to be painted. |
By purpose |
39. Protective paint coating | A coating designed to protect the painted surface from exposure to factors external environment | 40. Protective and decorative paint coating | A paint and varnish coating designed to protect the painted surface from the effects of environmental factors and give it decorative look | 41. Preservation paint coating | A paint coating intended for temporary anti-corrosion protection of a painted or painted surface in production process, transportation and storage of products | 42. Electrical insulating paint coating | 43. Electrically conductive paint coating | 44. Special paint coating | 45. Weather-resistant paint coating | 46. Gasoline-resistant paint coating | 47. Waterproof paint coating | 48. Oil-resistant paint coating | 49. Heat-resistant paint coating | 50. Chemically resistant paint coating |
By appearance |
50a. Smooth paint finish | 50b. Relief paint coating | 50c. Single color paintwork | 50g. Patterned paintwork | A smooth paint coating, the outer layer of which has a specific pattern |
BASIC PROPERTIES OF PAINT COATINGS |
51. Adhesion | According to GOST 28246-89 | 52. Shine of paintwork | According to GOST 28246-89 | 53. Lightfastness of paintwork | The ability of a paint coating to maintain specified properties under the influence of light radiation | 53a. Paint color | 54. Color fastness of paintwork | The ability of a paint coating to retain color under the influence of environmental factors | 55. Sandability of paintwork | The ability of a paint coating to change roughness during abrasive processing | 56. Polishability of paintwork | The ability of a paint coating to restore or increase gloss when treated with polishing compounds | 56a. Impact strength of paintwork | The ability of a paint coating to resist destruction (cracking, peeling) upon impact | 56b. Elasticity of paint coating | The ability of a paint coating to withstand deformation of the painted surface during bending | NDP. Flexibility | 56c. Hardness of paintwork | The ability of a paint coating to resist mechanical stress: indentation, scratching | 56 Paint class | A set of indicators characterizing the quality and appearance of the paintwork |
TYPES OF DESTRUCTION OF PAINT COATINGS |
57. Weathering of paintwork | Destruction of paintwork due to erosion | 58. Dirt retention of paintwork | The ability of a paint coating to retain foreign particles on the surface that cannot be washed off with water | 59. Chalking paintwork | Destruction of pigmented paint and varnish coatings, accompanied by the formation of free pigment particles | Chalking | 60. Peeling paintwork | Peeling | 61. Swelling of paintwork | Increase in the volume of paint coating under the influence of environmental factors | Swelling | 62. Underfilm corrosion | Corrosion of painted metal as a result of exposure to an aggressive environment penetrating to its surface through the paint coating | 63. Cracking of paintwork | According to GOST 28246-89 | 64. Dissolving paintwork | 65. Bubbles on the paintwork |
ALPHABETIC INDEX
Adhesion | 51 | Shine of paintwork | 52 | Weathering of paintwork | 57 | Flexibility NDP | 56b | Padding | 5a | Dirt retention of paintwork | 58 | Durability of paintwork | 14 | Paint class | 56g | Under-film corrosion | 62 | Chalking | 59 | Chalking paintwork | 59 | Swelling | 61 | Swelling of paintwork | 61 | Coloring | 5 | Autodeposition staining | 20 | Airless spray painting | 23 | Airless electrostatic spray painting | 26 | Roller painting | 29 | Fluid Bed Dyeing | 27 | Painting with a brush | 28 | Fill dyeing | 17 | Dip dyeing | 16 | Air Spray Painting | 22 | Pneumoelectrostatic spray painting | 25 | Spray painting | 21 | Jet painting | 18 | Electrodeposition painting | 19 | Electrostatic spray painting | 24 | Peeling | 60 | Free paint film | 9 | Surface to be painted | 3 | NDP substrate | 3 | Coating | 1 | Primer coating | 37 | Combined coating | 36 | Paint coating | 2 | Weather-resistant paint coating | 45 | Gasoline resistant paint coating | 46 | Waterproof paint coating | 47 | Smooth paint coating | 50a | Protective paint coating | 39 | Protective and decorative paint coating | 40 | Preservative paint coating | 41 | Oil-resistant paint coating | 48 | Monochromatic paint coating | 50v | Relief paint coating | 50b | Patterned paint coating | 50g | Special paint and varnish coating | 44 | Heat-resistant paint and varnish coating | 49 | Chemical resistant paint coating | 50 | Electrical insulating paint coating | 42 | Electrical conductive paint coating | 43 | Putty coating | 38 | Polishability of paintwork | 56 | Obtaining paint coating | 4 | Impact strength of paintwork | 56a | Bubbles in paintwork | 65 | Dissolving paint coating | 64 | Cracking of paintwork | 63 | Lightfastness of paintwork | 53 | Paint system | 2a | Detection layer | 8 | Revealing layer of paint coating | 8 | External coating layer | 10 | Compatibility | 7 | Compatibility of paint layers | 7 | Paint life | 13 | Durability of paintwork | 12 | Aging of paintwork | 15 | Drying | 30 | Drying paintwork | 30 | Hot drying of paintwork | 32 | Natural drying of paintwork | 31 | Radiation-chemical drying of paint and varnish coating | 33 | Photochemical drying | 34 | Hardness of paintwork | 56v | Drying temperature | 35 | Paint drying temperature | 35 | Texture of paintwork | 11 | Formation of paint coating | 6 | Paint color | 53a | Color fastness of paint coating | 54 | Sandability of paintwork | 55 | Puttying | 5 B | Elasticity of paint coating | 56b |
Definition |
Surface treatment |
1. Mechanical restoration surface to be painted | According to GOST 9.008 | Mechanical restoration | 2. Abrasive treatment of the surface to be painted | According to GOST 23505 | 3. Jet-abrasive treatment of the surface to be painted | According to GOST 23505 | NDP. Abrasive-fluid processing | Hydroprocessing | 3a. Liquid-abrasive treatment of the surface to be painted | According to GOST 23505 | NDP. Waterjet machining | Galtovka | 3b. Liquid treatment of the surface to be painted | High Pressure Fluid Impact Treatment | 4. Shot blasting of the surface to be painted | Treatment of the surface to be painted with the impact of abrasive materials supplied under the influence of centrifugal force | Shot blasting | 5. Shot blasting | Treatment of the surface to be painted with abrasive materials supplied to the surface with a jet of compressed air | 6. Sandblasting surface to be painted | Sandblasting | 7. Gas-flame treatment of the surface to be painted | Gas flame treatment | NDP. Flame treatment | 8. Chemical treatment surface to be painted | Treating the surface to be painted with chemical solutions | 9. Passivation of the surface to be painted | According to GOST 9.008 | Passivation | 10. Phosphating | According to GOST 9.008 | 11. Etching | According to GOST 9.008 | 12. Degreasing | According to GOST 9.008 | 12a. Chemical activation | According to GOST 9.008 | NDP. Chemical pickling | 12b. Oxidation | According to GOST 9.008 |
Defects in paint and varnish coatings |
13. Drips on the paintwork | Thickening of the paint coating on the surface to be painted, formed when the paint and varnish material flowed off and preserved after drying | 14. “Craters” in the paintwork | Macroscopic round depressions in the paintwork | 15. (Deleted, Amendment No. 2). | 16. “Pockmarks” on the paintwork | Recesses in the paintwork that do not reach the surface to be painted | 17. “Pores” in the paintwork | Microscopic round through holes in paint coating | 18. Variety of paint colors | A defect characterized by the appearance of spots various shades on a painted surface | 19. Risks on paintwork | A defect in the form of traces of scratches from abrasive processing of the painted surface or lower layers of paint and varnish coating, which appears on the outer layer of the coating | 20. Wrinkling of paintwork | Small folds in the form of regular irregularities with small amplitude, appearing throughout the entire thickness of the paintwork or part of it | 21. Inclusions in the paintwork | Foreign particles in paintwork | 22. “Shagreen” on the paintwork | A surface defect characterized by the appearance of depressions in the paintwork, resembling specially tanned leather | 23. Waviness on the paintwork | Defect of flat painted surfaces in the form of periodic irregularities with relatively large steps | 24. Change in paint color | Deviation color characteristics paint coating from the norm, arising during formation or operation | 25. Heterogeneity of the paintwork pattern | A defect characterized by violations of the shape and size of the elements of the paintwork pattern on patterned coatings |