QB/T 2002.1-2018Hardware fitting ofleather products-Specification of electroplated layer (English PDF)
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Issued by
Ministry of Industry and Information Technology of PRC
Level / Type
National · Recommended
Issue date
May 8, 2018
Implementation date
September 1, 2018
Scope
QB/T 2002.1-2018 (Hardware fitting ofleather products-Specification of electroplated layer) is available as an English-translated PDF.
QB/T 2002.1-2018 is the Chinese standard "Hardware fitting ofleather products-Specification of electroplated layer". Its scope clause reads: This part of QB/T 2002 specifies the terms and definitions, requirements, test methods, inspection rules for the electroplating layers of hardware fitting of leather products.
This part applies to all kinds of electroplating layers of hardware fitting of leather products. The electroplating layers of other base materials can make reference to this part.
Its clauses include terms and definitions; test methods; inspection rules. It was issued by the Ministry of Industry and Information Technology of PRC on 2018-05-08 and took effect on 2018-09-01.
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Document preview — QB/T 2002.1-2018
National Standard of the People's Republic of China
- ICS
- 59.140.35
Issued by: Ministry of Industry and Information Technology of PRC
Contents
- Foreword...3
- 1 Scope...5
- 2 Normative references...5
- 3 Terms and definitions...5
- 4 Requirements...6
- 5 Test methods...7
- 6 Inspection rules...7
1 Scope
This part of QB/T 2002 specifies the terms and definitions, requirements, test methods, inspection rules for the electroplating layers of hardware fitting of leather products.
This part applies to all kinds of electroplating layers of hardware fitting of leather products. The electroplating layers of other base materials can make reference to this part.
2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard.
QB/T 3821-1999 Adhesion testing method of the metal deposits for the light industrial products
QB/T 3826 Corrosion-resistant testing method of the metal deposits and conversion coatings for the light industrial products - Neutral salt spraying test (NSS)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Varnish
A solid-state continuous film the painting solution of which is applied to the surface of the plating to form a protective plating.
3.2
Pockmark
4.1.4 The pattern and text are clear.
4.2 Bonding strength of electroplating layer
The plating shall not be lifted or peeled off.
4.3 Adhesion of varnish
The varnish does not fall off.
4.4 Corrosion resistance
The number of corrosion points is not more than 3, meanwhile the area of a single corrosion point is not more than 1 mm2.
5 Test methods
5.1 Appearance quality
Perform visual inspection in good lighting conditions.
5.2 Bonding strength of electroplating layer
Perform testing according to the scratching method in 2.3 of QB/T 3821-1999.
5.3 Adhesion of varnish
Use a stylus or steel needle which has a radius of curvature at the needle tip of
0.013 mm ~ 0.018 mm, in the direction perpendicular to the length of the sample, to make 6 parallel scratches (length of about 5 mm) along the surface of varnish, at a spacing between scratches of 1 mm. The stylus or steel needle shall penetrate the overall depth of the varnish. Then make 3 scratches which are perpendicular to the previous 6 scratches, at the length of about 8 mm and the spacing of 1 mm, to form 10 small grids. Use hands to gently touch them.
Observe the peeling of varnish.
5.4 Corrosion resistance
Carry out testing according to QB/T 3826. The test period is 16 h.
6 Inspection rules
6.1 Group-batch
The products of same type which are produced by the use of the same variety of raw materials according to the same production process form an inspection batch.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.
Referenced standards
Normative references
QB/T 3821-1999 · QB/T 3826
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