GOST R 52146-2003

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  ГОСТ Р 52146-2003

GOST R 52146−2003 cold rolled and cold rolled hot-dip galvanized with polymer coating on continuous lines. Specifications

GOST R 52146−2003
Group B33

NATIONAL STANDARD OF THE RUSSIAN FEDERATION
COLD ROLLED
COLD-ROLLED AND HOT DIP GALVANIZED
POLYMER COATED CONTINUOUS LINES
Specifications

Cold rolled and cold rolled hot-galvanized sheet with polymer coating,
prepainted by the continuous coil-coating process. Specifications

OKS 77.140.50
GST 11 1200

Date of introduction 2004−07−01

Preface

1 DEVELOPED by JSC «Novolipetsk metallurgical plant"

SUBMITTED by the Technical Committee for standardization TC 375 «steel Products from ferrous metals and alloys"

2 ADOPTED AND put INTO EFFECT by the Resolution of Gosstandart of Russia from November 25, 2003 N 330-St

3 INTRODUCED FOR THE FIRST TIME

AMENDED, published in the IUS N 3, 2005

The amendment introduced by the legal Bureau «Code»

1 Scope

This standard applies to cold rolled sheet and cold-formed galvanized rolled with polymer (paint and plastisole), coated rolling method in a continuous operation, designed for use in construction, instrumentation, in the production of outer panels of household appliances and other industries besides automotive.

2 Normative references

The present standard features references to the following standards:

GOST 12.3.002−75 System safety standards. The process of production. General safety requirements

GOST 12.3.005−75 System safety standards. Work painting. General safety requirements

GOST 12.3.008−75 System safety standards. The production of metal coatings and inorganic non-metallic. General safety requirements

GOST 380−94 carbon Steel of ordinary quality. Brand

GOST 1050−88 black bars calibrated with special surface finish, made of carbon structural quality steel. General specifications

GOST 6456−82 emery Cloth sanding paper. Specifications

GOST 7566−94 metal Products. Acceptance, marking, packing, transportation and storage

GOST 9045−93 cold-rolled thin sheets of low carbon quality steel for cold forming. Specifications

GOST 9825−73 Materials. Terms, definitions and symbols

GOST 14918−80 galvanized sheet Steel from continuous lines. Specifications

GOST 15150−69 Machines, instruments and other technical products. Versions for different climatic areas. Categories, conditions of use, storage and transportation of the impact of climatic factors of the external environment

GOST 16523−97 rolled sheets from carbon steel quality and common quality of General purpose. Specifications

GOST 19851−74 Tape cold-rolled cut. Specifications

GOST 19904−90 cold-rolled steel sheets. Assortment

GOST 26877−91 metal Products. Methods of measuring form deviations of

3 Definitions

In this standard use the following terms with respective definitions:

3.1 polymer (paint, plastitalia) coating: Film-based high-molecular compounds on the surface of the rolled formed by hot drying roller applied by the method of liquid paint materials (primers, finishing and protective enamels, plastisols) and has a complex of protective, decorative, physical-mechanical and other special properties.

3.2 primer: the Bottom layer in the two-layer polymer coating deposited directly on the metal surface, designed to provide strong adhesion and high corrosion resistance full coating system.

3.3 front side of the rolling steel with the polymer coating Side exposed to external influences.

3.4 reverse side of the coated steel: Side opposite the side exposed to external influences.

3.5 timber edge of the rolling steel with the polymer coating: Edge that is not cut after cold rolling mill.

3.6 two-layer polymer coating: a Coating consisting of a layer of primer and finishing enamel layer or plastisol.

3.7 single-layer coating: Coating the back side of the Bicycle, consisting of a layer of protective enamel, without regulatory requirements for appearance, corrosion resistance, formability, etc.

3.8 rental with double-sided polymer coating: rental with double-layer polymeric coating on the front side and single layer polymer coating on the reverse side.

Note — On the reverse side of the rental single-layer coating is applied to protect against mechanical damage to coating the front side of the rental during shipping and storage by the consumer.

3.9 rental with bilateral polymer coating: rental with double-layer polymeric coating on the front and back sides.

3.10 cutting edges of rolled products with polymer coating: Edge, which is cut after cold rolling and heat treatment before processing on the line coating.

4 Classification, assortment

4.1 colour-coated products are divided as follows:

by type of products:

— sheets,

— rolls

— a tape cut in rolls;

in appearance the basics on:

— cold rolled,

— cold rolled sheets hot-dip galvanized;

the type of coatings:

— Paintwork — paint cold-rolled steel,

— LCPI — paint cold-rolled hot-dip galvanized steel,

— PZP — plastisole coating cold-rolled steel,

— PSPI — plastisole coating cold-rolled hot-dip galvanized steel;

by type of coating:

— one-sided — I

— two-sides — II;

for the ability to draw the basics:

— SV — complex,

— VG — very deep,

— G — deep,

— N — normal;

accuracy rolling basis:

AT high precision,

— BT — normal accuracy;

for flatness:

— PV — high,

— PU — improved

— PN — normal;

type of edge:

BUT mill edge,

— On — with cut edge;

in appearance the surface of the two-layer coating (in accordance with the table 3) into two classes: 1 and 2.

4.2 With regard to the type, kind and class of coating finished steel has the following designations:

LKP — I/1	LKP — I/2	LCP — II/1
LKI — I/1	LKI — I/2	LKOZ — II/1
IRR — I/1	IRR — I/2	LCP — II/2
PSPAC — I/1	PSPAC — I/2	LKOZ — II/2

4.3 Scheme of the legend of the rolling steel with the polymer coating are given in the Appendix .

4.4 Dimensions the basics:

4.4.1 Thickness, mm:

— cold-rolled — 0,35−2,00;

cold — rolled hot-dip galvanized — 0,35−2,00.

4.4.2 Width, mm:

— roll, sheet — 500−1800;

— tape — 100−499.

4.4.3 Length of leaves from a number of dimensions according to GOST 19904.

4.5 tolerances for the thickness of the base;

cold — rolled (roll, sheet) — according to GOST 19904;

— tape — GOST 19851;

— hot dip galvanized (coil, sheet) — according to GOST 14918.

4.6 tolerances for the width of the rolling steel with the polymer coating, mm

— mill edge — from 0 to plus 20;

— with cut edges — from 0 to plus 5.

4.7 Deviation from flatness, camber and requirements to the edge of the sheets according to GOST 19904.

4.8 is basically a telescoping of the roll must be not more than 20 mm.

4.9 Internal roll diameter — 500−600 mm.

4.10 Maximum weight, t:

— roll — 16,0;

— sheet pack — 10,0;

— roll pieces of tape to 5.0.

5 Technical requirements

5.1 coated steel is manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

5.2 Chemical composition basics — according to GOST 380, GOST 1050, GOST 9045, GOST 14918 or other regulatory documents, by agreement with the consumer.

5.3 Requirements for mechanical properties basis

5.3.1 For cold-rolled bases with the ability to draw SV, SH — according to GOST 9045, with the ability to draw G, N — GOST 16523.

5.3.2 For cold-formed galvanized framework with the ability to draw SV — 9045 churchyard, with the ability to draw VG, G, H — according to GOST 14918.

5.4 Materials used for the manufacture of polymer coatings, their designation and range of thickness given in table 1.


Table 1

The coating material	Marking		The range of thickness, microns
according to GOST 9825	[1]
Primer:
acrylate primer	-	-	5−7
polyester primer	-	-	5−7
epoxy primer	-	-	5−7
Finishing of enamel: acrylic enamel	AK	AY	20−30*
polyester enamel	PE, PL	SP	20−30*
polyurethane enamel	UR	PUR	20−60*
polivinildenftorid enamel (PVDF)	OP	PVDF	20−60*
PVC plastisol (PZ)	XB	PVC (P)	100−200*
Protective enamel: polyester enamel	PE	SP	10−18
epoxy enamel	EP	EP	10−18
* The total thickness of the coating together with the ground.

By agreement between the manufacturer and the customer is allowed to use other types of materials. Regulatory document on the painting material is a document about the quality of the manufacturer of the material.

5.5 the Color of the polymer coating on the front and reverse sides of the rental is determined by agreement between the manufacturer and the consumer.

5.6 Nominal thickness of the polymer coating on the front and back of the rental and the number of coating layers is determined by agreement between the manufacturer and the consumer.

5.6.1 Limit deviations of the thickness of the polymer coating on the front side of the rental, depending on the range of nominal thickness shown in table 2.


Table 2

In micrometers

Limit deviation of thickness of the polymer coating	Nominal thickness of the polymer coating
SV. 10 to 20 incl.	SV. 20 to 25 incl.	SV. 25 to 35 incl.	SV. 35 to 60 incl.	SV. 60 to 100 incl.	SV. 100 up to 200 cyl.	SV. 200 to 500 incl.
Lower deviation for average values of coating thickness of the three measurements	3	4	5	8	15	20	30
Lower deviation for the values of coating thickness at each of the three measurements	4	5	7	12	20	25	Thirty five
Notes 1 Limit deviations of the thickness of the polymer coating with a nominal thickness of 10 microns or less must be agreed between manufacturer and user. 2 the Upper deviation of the thickness of the polymer coating is not normalized.

5.7 Thickness tolerances for thickness and additional requirements for coating the back of the rental is determined by agreement between the manufacturer and the consumer.

5.8 appearance of rental with two-layer polymer coating shall conform to the requirements of table 3.


Table 3

Class cover	Type of coverage	The characteristic appearance of the coating on the front side of the rental
1	LKP, LCPI	The surface must be solid. The surface coating shall be continuous, free of defects that penetrate to the metal base. On the surface of LCPI not have visually observed the pattern of crystallization of zinc. Individual defects permitted, not larger than 3 mm, not penetrating to the metal base, or a small group of such defects. Permitted defects of the coating at a distance of not more than 5 mm from the edge of the roll
1	PPP, PSPEC	The surface must be plain with embossing or without embossing. The surface coating shall be continuous, free of defects that penetrate to the metal base. Individual defects permitted, not larger than 3 mm, not penetrating to the metal base, or a small group of such defects, periodically or randomly located, and also separate parts with the distortion of the image (relief) embossing. Permitted defects of the coating at a distance of not more than 5 mm from the edge of the roll
2	LKP, LCPI, PZP, PSPEC	In addition to the defects mentioned for the 1st class coverage permitted: areas of rezinotehnichesky; the areas with different brightness; shagreen; pockmarks; scratches that do not penetrate to the metal base; prints nadavi; other defects agreed with the consumer. Permitted defects within 10 mm of the edge of the roll
Note — quality of appearance is determined visually without the use of magnifying devices.

5.9 single-layer polymer protective coating on the reverse side of the rental must be continuous. By agreement of the parties permitted neprokrasy, shagreen, strokes, risks, include.

5.10 In rolls and packs of rolled products with polymer coating 1 St class is allowed up to 5% of hire with polymeric coating of the 2nd class.

5.11 rolls of the rolling steel with the polymer coating is allowed no more than one seam. The quality of the surface of the polymer coating at a distance of 5 m from the seam in both directions is not regulated.

5.12 Indicators of quality two-layer polymer coating on the front side of the rental and test methods are given in table 4.


Table 4

An indicator of the quality of polymer coatings	The value of indicator of the quality of polymer coatings		Test method
paint	PLASTICOLOR
1 Adhesion scores	0	0	Appendix D
2 the Strength of the reverse shock, J.	5−10	10−15	Appendix E
3 tensile Strength at ericsen, mm	At least 6	At least 6	Annex E
4 Flexural Strength at 180°	No more 3T	No more than 1T	App W
5 Hardness of the polymer coating	F-H-2H	F-H	The Application And
6 the Color difference	Not more than 1	Not more than 1	App To
7 Glitter %	10−80	10−60	Appendix L
Notes 1 For rental with two-sided polymer coating quality of coatings on the front and back sides of the box may be the same or different, in agreement with the consumer. 2 the Hardness of the polymer coating (pencil method) is determined by the type of material used for the manufacture of the polymer coating. 3 the Volume indicators of the quality of polymer coatings and methods of control determined by agreement between the manufacturer and the customer when ordering. 4 In the absence of consumer devices for measurement of brightness and colour differences monitoring of these indicators can be visual on the model agreed with the customer when ordering.

These indicators of the quality of polymer coating shall be agreed between manufacturer and user and depend on the type of the applied coatings.

5.13 by agreement between the manufacturer and the customer may establish additional special indicators of the quality of the polymer coating.

5.14 To protect the surface of the polymer coating from mechanical damage during transport and processing may be applied on the front side rolled easily removable polymer film (self-adhesive or Termokarstovoye).

6 acceptance Rules

6.1 acceptance of the rolling steel with the polymer coating according to GOST 7566.

6.2 the hire with a polymeric covering take parties. The party should consist of metal one steel grade, the same melting, the same kind of coverage, one type of steel, the same color and embossing of the film, the same size, manufactured in a single technological regime.

6.3 the Party rolling with a polymeric covering is accompanied by a quality document in accordance with GOST 7566.

Indicators of the quality of the polymer coating and the chemical composition in the document as indicate by the consumer.

6.4 For the control of conformity of the rolling steel with the polymer coating present standard requirements of the party take one stack or one roll.

7 control Methods

7.1 Geometric dimensions of the Foundation measured:

— thickness — not less than 20 mm from edges and not less than 2 m from the end of the roll;

— width — a minimum distance of 2 m from the end of the roll;

— camber and deviation from flatness — according to GOST 26877.

Telescopically rolls of coated rolled steel is determined according to GOST 26877.

7.2 main Test conducted by the manufacturer prior to application of the polymer coating.

Test results are recorded in the document of quality by the consumer.

7.3 Control the appearance of the surface of the polymer coating and edges is carried out without the use of magnifying devices.

7.4 For the testing one sheet from the control pack and one segment of length 1 m from the end or the beginning of the control coil. Sampling (samples) from the sheet or cut in accordance with Annex B.

7.5 Method of measurement of the thickness of the polymer coating are given in Appendix B.

7.6 Method of determining the adhesion of the polymer coating (method of lattice cuts).

7.7 Method of determining the strength of the polymer coating in a reverse strike in Annex D.

7.8 Method of determining the strength of the coating when stretched at Eriksen in Annex E.

7.9 Method of measuring the strength of a polymer coating when bending in Annex J.

7.10 Method of measuring the hardness of the polymer coating in Annex I.

7.11 Method of measuring the color differences of materials with a polymer coating in Annex K.

7.12 Method of measuring gloss polymer coating is in Appendix L.

7.13 as agreed between the manufacturer and the customer is allowed to use other methods of testing the quality of polymer coating.

8 Packing, marking, transportation and storage

8.1 Packaging, labeling, transportation and storage — by GOST 7566 with additions.

8.2 Packing of the coated steel must be protected from moisture on the ends of the packs and rolls in the interturn space of the rolls and also protect rolls and packs against mechanical damage during transportation.

8.3 Each coil (pack) supply packaging label or tag indicating the name of the supplier, batch number, steel grade, the geometry of the rolling steel with the polymer coating and color coating, weight, length of the strip in the roll or number of sheets in the stack rooms of this standard.

8.4 hire transporterowych all kinds of transport in accordance with cargo carriage regulations applicable to a particular mode of transport.

8.5 the rolling steel with the polymer coating should be kept in conditions corresponding to requirements of GOST 15150 for storage conditions J3.

8.6 the Manufacturing of products from rolled, prepainted carried out at a temperature not lower than + 15 °C, With plastisole coverage at temperatures below plus 10 °C.

The maximum period of storage of the rolling steel with the polymer coating prior to processing the consumer should not exceed 6 months from the moment (day) of manufacture of hire.

9 safety Requirements

9.1 the rolling steel with the polymer coating is non-toxic and Shorashim material.

9.2 Requirements for fire safety in the manufacture of rolled products with polymer coating should correspond to GOST 12.3.002, GOST 12.3.005 and GOST 12.3.008.

9.3 All work associated with the use of the rolling steel with the polymer coating should be carried out with observance of safety requirements according to GOST 12.3.002, GOST 12.3.005.

9.4 Production control over compliance with sanitary rules and implementation of sanitary and anti-epidemic (preventive) measures carried out in accordance with the requirements of sanitary regulations [2].

9.5 Conditions of production, packaging, transportation and storage of cold-rolled sheet and cold rolled hot-dip galvanized steel with polymer (paint, plastisoles) coating should not adversely impact on the person.

Annex a (mandatory). The scheme of the legend of the rolling steel with the polymer coating

APPENDIX A
(required)

Note — in the absence of any of the parameters it selects the manufacturer.


Example of designation steel with polymer coating

Steel cold-rolled sheet hot-dip galvanized: double-sided coating (II) the exterior surface of class 2 (LKI II/2), normal accuracy of rolling (BT), the normal flatness (PN), with cut edges (O), size 0,40х500х1200 mm, complex extracts (NE) from 08JU steel grade according to GOST 9045−93:

Sheet	LKI II/2-BT-PN-O-0,40х500х1200 GOST 19904−90
SV-08JU GOST 9045−93 GOST R 52146−2003

APPENDIX B (mandatory). The scheme of sampling for the control tests

APPENDIX B
(required)

Figure B. 1

Note — «*" denotes a place of testing.

Figure B. 1

Name of the indicator, marking (in accordance with figure B. 1), the size and number of samples are given in table B. 1.


Table B. 1

Name of the indicator	Marking samples	Dimensions, mm	Quantity, PCs.
The thickness of the coating	2A; 2B; 2C	90x90	3
The gloss, color difference
Adhesion	For; 3b; 3C	90x90	3
The hardness of the coating
The strength of the reverse shock	4A; 4B; 4B	90x90	3
The Flexural strength of T	5	40x400	2
Tensile strength	1	90 x width rolled with the given indentation (50 mm) from edges	1

ANNEX b (mandatory). Method of measuring polymeric coating thickness.

THE APP
(required)

B. 1 measurement Conditions

During the measurements comply with the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity in the working room — (50±5)%.

B. 2 measuring Method

Magnetic induction method for measuring the thickness of the polymer coating in the measurement range 2 to 2000 µm based on the determination of changes in the magnetic resistance subcircuit inverter — controlled item dependent on the coating thickness, on the electromotive force induced in the measuring winding of the Converter-fed alternating current of low frequency.

B. 3 measurement Means, auxiliary devices, materials

Thickness type «Permascope» M10/M10B or any other with similar technical and metrological characteristics:

measuring range of thickness of 0.002−2 mm;

the measurement accuracy is 2% +1 microns.

Measure the thickness to measure the thickness of the polymer coating electrical devices.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, with a scale division of 0.5 °C:

The solvent of any type, removing the polymer coating.

Knife.

B. 4 preparing the measurement

V. 4.1 After the heat treatment the samples with a polymer coating needs to cool to the temperature of the air of the work space.

V. 4.2 magnetic induction method for measuring the thickness of a polymer coating applied only to products with a smooth and flat substrate, an organic coating can be structured.

V. 4.3 magnetic induction method does not destroy the coating when measuring the thickness of polymer coating on metal substrates of cold rolled steel. In this case there is no possibility of an electric probe to measure simultaneously metallic and organic coatings. First, measure the thickness of metallic and polymer coatings. After removal of the paint layer the thickness of the metal coating should be measured at the same location. The difference between the total thickness and the thickness of the metallic coating equal to the thickness of the polymer coating. The organic coating is removed using an appropriate solvent. After a certain time of contact with the solvent softened the coating is removed by using abrasive and (or) blunt knife. Abrasive blasting should not affect the metal coating.

V. 5 the Order of execution of measurements

V. 5.1 instrument setup

The device is set up in accordance with documentation (Technical description, user Manual, etc.). When setting the instrument to zero using a plate of metal without the polymer coating, which has the same shape, thickness, magnetic properties, as controlled samples. It should have a smooth flat surface without dirt and scratches.

When configuring a device use the measure thickness. Choose a scale with a maximum value greater than the calculated coating thickness and a minimum value lower than the calculated coating thickness.

V. 5.2 performance measurement

Place the probe on the sample with a polymer coating. Conduct at least three measurements of coating thickness on smooth surfaces and at least five measurements on structured surfaces.

B. 6 Processing of measurement results

The measurement results take the arithmetic mean of parallel definitions of the thickness of the polymer coating.

V. 7 the Results of measurements are recorded with accuracy to tenths, the final result is the determination of the thickness of the polymer coating are rounded to the nearest whole number.

V. 8 the Accuracy of this method is determined by the accuracy of the measuring device.

APPENDIX d (mandatory). A method of determining the adhesion of the polymer coating (method of lattice cuts)

APPENDIX D
(required)

G. 1 measurement Conditions

When performing measurements comply with the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity in the working room — (50±5)%.

G. 2 Method of lattice cuts

The method is based on application of lattice cuts in the range of from 0 to 5 points for finished organic coating with the polymer coating and the subsequent evaluation of the test results.

G. 3 measurement Means, auxiliary devices, materials

The cutting tool with the sharpening angle of the cutting edge from 20° to 30° and the thickness of the blade (0,43±0,03) mm.

Brush.

Transparent adhesive tape of any type with a minimum width of 25 mm.

Magnifier with triple magnification of any type.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

Testing machine of type IA 5073 or any other with similar technical and metrological characteristics:

the mold inner diameter (27+1) mm;

punch molds — sphere diameter of (20±1) mm;

the speed of the punch (12+6) mm/min.

The line of metal of any type with a length of 300 mm and the interval is 1 mm.

G. 4 Preparation for measurement

4.1 After Assembly of the polymer coating the samples with a polymer coating needs to cool to the temperature of the air of the work space.

4.2 Samples should have a smooth surface. The distance from the grating to the edge of the specimen shall not be less than 5 mm

G. 5 Procedure of measurement

5.1 the cuts Applied on the polymer coating in the form of a lattice.

5.2 the distance between the cuts

The distance between the incisions in each direction must be the same and depend on the coating thickness and base type (table G. 1).


Table G. 1

The distance between the incisions, mm	Coating thickness, µm	The hardness of the coating
1 ± 0,1	0−60	Solid
2 ± 0,1	0−60	Soft
2 ± 0,1	61−120	Hard, soft
3 ± 0,1	121−250	Hard, soft

5.3 Incisions and coating removal is carried out manually.

5.4 Place the test sample on a solid, level surface to prevent the deformation of the sample during the test.

5.5 Execute parallel cuts with cutting tools. Then perform parallel cuts perpendicular to the original incisions so as to form a lattice. The cutting tool must be held perpendicular to the sample surface, the movement should be uniform. All cuts must walk up to the base of the sample (metal, galvanized coating).

For soft surfaces carefully clean the surface with a brush.

For hard surfaces use sticky tape, length 75 mm, which is placed on the grate in a direction parallel to one row of cuts.

Firmly press the tape to the bars, leaving one end of the strips are not pasted. Then sharp movement off the tape at an acute angle to the surface of the sample.

For rental with plastisole coating make two cuts in mutually perpendicular directions. The size of the square should be 5 mm. After extruding spherical holes with depth of 6 mm at the site of incision should be no exfoliation of the film (plastisol). For extruding spherical dimples use a device of the type IA 5073 or any other with similar technical and metrological characteristics. The device is set up in accordance with documentation (Technical description, user Manual, etc.). The rate of movement of the punch should be uniform and equal to (12+6) mm/min.

G. 6 Evaluation of test results

Evaluation of results of tests performed immediately after removal of tape. Visiting the area with snips or a sticky tape in good light without the aid of devices or with a magnifying glass (by agreement with the consumer).

To determine the adhesion according to this method using the table 2.


Table D. 2 — Classification of test results

Classification	Description
0	The edges of the cuts smooth, no signs of flaking in one grid square
1	Slight peeling of the coating in the form of small flakes at the intersections of the grid lines. Violation is not more than 5% of the grating surface
2	Partial or complete peeling of the coating along incisions small grid or at their intersections. Violation observed no less than 5% and not more than 15% of the grating surface
3	Partial or complete peeling of the coating along the line of lattice cuts or in their intersections. Violation observed no less than 15% and not more than 35% of the grating surface
4	Full peeling or partial exceeding 35% of the grating surface

Tests carried out on three samples. For the final test result take the maximum value of adhesion in the scores of the three samples.

APPENDIX e (mandatory). Method of definition of durability of the polymer coating in a reverse punch

APPENDIX E
(required)

D. 1 measurement Conditions

When performing measurements comply with the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity in the working room — (50±5)%.

D. 2 measuring Method

Method of definition of durability of the polymer coating during the reverse shock in the range of from 0 to 20 j based on the impact of falling load and the determination of the height at which there is deformation of the polymer coating.

D. 3 measurement Means, auxiliary devices, materials

Tester with a falling weight.

Two weights (1000,0±1,0) g each.

PEEN the ball diameter (20±1) mm.

Anvil hole diameter (27±1) mm.

Any type of magnifying glass with a tenfold magnification.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

D. 4 Preparation for measurement

D. 4.1 For this test method uses samples with a flat surface, undeformed, and a thickness not less than 0.25 mm.

D. 5 Procedure of measurement

Conduct one test on each sample. The test specimen is placed in the device a polymer coating down. Raise the weight to a certain height (10, 20, 30, 40, 50, 60, 70, 80, 90, 100 cm) and allowed to fall the load on the sample, then consider coating with a magnifying glass. The coating is considered satisfactory if it is not formed cracks and were peeling off from the primer. The test starts with the minimum drop height of the load (10 cm) and gradually increase it until the coating cracks and (or) detachment of the coating.

D. 6 Processing of measurement results

The result of the measurement take the value of the largest drop height of the load at which the coating is not observed cracks and peeling off from the primer. Conduct three tests on the three samples. For the final tests take the smallest (of three) the drop height of the load.

ANNEX E (mandatory). A method of determining the strength of the coating when stretched at Eriksen

ANNEX E
(required)

E. 1 measurement Conditions

When measuring you must meet the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity of the air in the room — (50±5)%.

E. 2 Method of measurement

A method of determining the strength of the coating in tension based on tensile specimen with a spherical punch to form on the embossed area of the cracks and (or) detachment from the soil.

E. 3 measurement Means, auxiliary devices, materials

Testing machine of type IA 5073 or any other with similar technical and metrological characteristics:

the mold inner diameter (27+1) mm;

punch molds — sphere diametral (20±1) mm;

the speed of the punch (12+6) mm/min.

Punch with a diameter of (20±2) mm.

Matrix internal diameter (27±1) mm.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

E. 4 Preparation for measurement

E. 4.1 For this method using samples with a flat surface, the undeformed thickness basis in accordance with 4.4.1 of this standard.

E. 5 Procedure of measurement

The device prepared in accordance with documentation (Technical description, user Manual, etc.). When testing the speed of movement of the punch should be uniform and equal to (12+6) mm/min clamping Force of the sample between the die and the retaining ring should be from 10 to 20 kN.

The test is carried out, increasing the size of the pilot hole until, until they discovered the cracks and (or) beginning of delamination of the coating (enamel). Test result is the maximum size of the recess in which cracks are not detected and (or) detachment of the coating (enamel). Carry out three measurements on different samples. For the final test result take the minimum (of three) the dimension of the depth of the hole, in which the coating no crack or peel.

APPENDIX g (mandatory). Method of measuring the strength of a polymer coating when bending

APP W
(required)

J. 1 measurement Conditions

When performing measurements comply with the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity in the working room — (50±5)%.

J. 2 Method of measurement

This method of strength measurement of polymer coating when bending from 0T and more based on bending the sample 180° to cracking.

J. 3 measuring instruments, accessories, materials

Any type of magnifying glass with a tenfold magnification.

A vise of any type.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

J. 4 Preparation for measurement

J. 4.1 On the surface of the sample should be free of contamination (oil, dust, sand, technical lubrication from the blades), which may affect the test results or to prevent the monitoring rastreskivanie or adhesion.

J. 4.2 Test coating should always be on the outside of the bend.

J. 4.3 In assessing the results of the tests do not take into account the sites at a distance of 5 mm from the edges.

J. 5 Procedure of measurement

The plate is bent to 180° at a distance of (25±0,5) mm from the edge (top coating), and then squeeze in a Vice to the contact (figure J. 1).

Figure J. 1 — diagram of the strength measurement of polymer coating when bending

Figure J. 1 — diagram of the strength measurement of polymer coating when bending

The condition of the coating at the bend consider without the aid of devices or with a magnifying glass (by agreement with the consumer).

If the surface coating has no cracks, the strength at the first bend corresponds to 0T. In the case of cracks, the test was continued as described above. In the absence of cracks the strength of the film at the second bend is So When the crack sample bend third time. In the absence of the cracking strength of the coating will be 1T. The Flex plate to the disappearance of cracks on the coating surface.

J. 6 Processing of measurement results

For test result take the minimum T bending under which test an organic coating remains intact.

J. 7 Tests carried out on two samples. For the final test result accept maximum deflection t of the two samples.

AND APPLICATION (required). A method of measuring the hardness of the polymer coating (pencil method)

THE APPLICATION AND
(required)

I. 1 measurement Conditions

When performing measurements comply with the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity in the working room — (50±5)%.

I. 2 Method of measurement

A method of measuring the relative hardness of the polymer coating from 6B to 6H based on the formation of mechanical damage when subjected to the coating with pencils of various degrees of hardness.

I. 3 measurement Means, auxiliary devices, materials

A set of marking pencils of the company KOH-I-NOR having a hardness on the scale (in ascending order): 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, ZN, 4N, 5N, 6N.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

Sandpaper with a fine grain type П2Г51СМ50Н48 with GOST 6456 or any other with similar characteristics.

Eraser.

I. 4 Preparation for measurement

Pencils sharpened so that the pencil was not jagged and had a cylindrical shape, made of 6 mm or wood, or from the clip (using the holder). Stylus then erode sandpaper to achieve a flat end surface.

The smooth surface gives more accurate test results, but the method applies to textured surfaces. The more pronounced the texture, the less reliable the test results.

I. 5 performance measurement

Prepared with pencil, press hard as possible without breaking the stylus, and move to cover myself, trying to remove the surface coating. After each test, the pencil or stylus should undermine sandpaper.

This test is carried out manually, but for better precision and more accurate measurements, one can use a mechanical device, in this case, the stylus should make the effort to 7.5 N. Conduct a series of tests until, until it is determined with a rigid stylus, do not remove the coating surface for a minimum length of 3 mm. Before inspection, the surface of the remnants of the stylus should remove the eraser from the sample. Tests carried out on three samples.

I. 6 Processing of measurement results

For the final test result accept the hardness of the pencil, not after the surface coating on a length of 3 mm, on the three samples.

APP TO (optional). A method of measuring the color differences of materials with a polymer coating

APP TO
(required)

This method is not applicable for samples exhibiting fluorescence, strong metamerism, multicolor, mother-of-pearl.

K. 1 measurement Conditions

If the measurements comply with the following conditions:

— the temperature of the air in the working room (20 ± 5) °C;

— the relative humidity in the working room — (50 ± 5)%.

K. 2 measurement Method

This method of measuring the color differences of materials with a polymeric coating based on the measurement of color coordinates X, Y, Z of standard and test samples and the subsequent calculation of color contrast when using these coordinates color.

K. 3 measurement Means, auxiliary devices, materials

A spectrophotometer of the type SPECTRO-COLOR or any other type having similar technical and metrological characteristics:

standard observer 2° and 10°;

aperture diameter of 20 mm;

the light source D65;

the illumination geometry 45°/0°;

the integrating sphere d/8».

Set reflecting color samples of any type used with this method of measurement of color contrast and corresponding to a given type of instrument.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

K. 4 Preparing for measurement

K. 4.1 Dimensions of samples for the measurement of color differences must be at least the size of the measuring aperture of the device. The sample surface must be flat, without mechanical damage and contamination.

For dark saturated colors (e.g. blue, brown, black) and bright colors (e.g. red, yellow) the error of the measurement results of color difference can be large. In this case, use the method of visual comparison.

K. 5 the Order of execution of measurements

In the calibration device and the measurement follow the instructions for the device.

K. 6 Processing of measurement results

The measurement results take the arithmetic mean of three parallel measurements of color contrast. Measurement results of color contrast materials with a polymer coating determined with accuracy to a tenth.

APPENDIX L (mandatory). Method of measuring gloss polymer coating

APPENDIX L
(required)

L. 1 measurement Conditions

When performing measurements comply with the following conditions:

— the temperature of the air in the working room (20±5) °C;

— the relative humidity in the working room — (50±5)%.

L. 2 Method of measurement

Photoelectric method of measuring the gloss of the polymer coating in the measuring range from 5 to 100 units based on the excitation of photocurrent in the photodetector under the influence of the light beam reflected from the surface of the test coating, and the measurement of the photocurrent.

L. 3 measurement Means, auxiliary devices, materials

Photoblocker type VGS-1D or any other with similar technical and metrological characteristics:

measurement range units of 0−100 gloss units of the gloss;

geometry 20°/20°, 60/60°, 85/85°;

instrument error not exceeding 2 units Shine.

A set of samples of glitter, applied by the photoelectric method of measuring brightness corresponding to a given type of instrument.

The psychrometer of any type, providing measurement of relative humidity from 30% to 80% with an error of no more than 10%.

Thermometer, which measure room temperature from 0 °C to 35 °C, division 0,5 °C.

L. 4 Preparation for measurement

L. 4.1 gloss meter used is smooth and flat samples, the size of which is larger than the aperture.

L. 4.2 gloss meter uses three angles:

60° — to determine the Shine from 0 to 100 units;

20° for the samples with geometry 60° gloss have more than 70 units;

85° for the samples with geometry of 60° are less than 15 gloss units.

L. 5 Procedure of measurement

L. 5.1 the Device is set up by defining Shine two plates. If the results of measuring the luster of the plates differ by more than ±1.5 units from their certified values, the instrument should be adjusted.

L. 5.2 the Gloss of the sample with coating is determined at the device and reading of the record Shine.

L. 5.3 Spend at least three gloss measurement on various samples.

L. 6 Processing of measurement results

The measurement results take the arithmetic mean of parallel definitions gloss polymer coating.

L. 7 the Final result of the determination of glitter rounded off to the nearest whole number.

L. 8 the Accuracy of this method is determined by the accuracy of the used instrument.

ANNEX M (informative). Bibliography

APP M
(reference)

[1] ISO 1043−1-2001* Plastic. Symbols and abbreviations. Part 1. Basic polymers and their special characteristics
_________________
* International standard in VNIIKI of Gosstandart of Russia.

[2] SP 1.1.1058−2001 Organization and conduction of production control over observance of sanitary rules and implementation of sanitary and anti-epidemic (preventive) measures