GB/T 4893.8-2023 English PDF

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GB/T 4893.8-2023: Test of surface coatings of furniture - Part 8: Determination of resistance to abrasion
Status: Valid

GB/T 4893.8: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4893.8-2023	359	Add to Cart	4 days	Test of surface coatings of furniture - Part 8: Determination of resistance to abrasion	Valid
GB/T 4893.8-2013	199	Add to Cart	2 days	Test of surface coatings of furniture -- Part 8: Determination of wearability	Obsolete
GB/T 4893.8-1985	70	Add to Cart	Auto, < 3 mins	Furniture--Assessment of wearability of surface coatings	Obsolete

Similar standards

GB/T 4893.1   GB/T 4893.2   GB/T 4893.3   GB/T 4893.10   GB/T 4893.4   GB/T 4893.5   

Basic data

Standard ID: GB/T 4893.8-2023 (GB/T4893.8-2023)
Description (Translated English): Test of surface coatings of furniture - Part 8: Determination of resistance to abrasion
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y80
Classification of International Standard: 97.140
Word Count Estimation: 18,176
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 4893.8-2013
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 4893.8-2023: Test of surface coatings of furniture - Part 8: Determination of resistance to abrasion

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 97.140 CCSY80 National Standards of People's Republic of China Replace GB/T 4893.8-2013 Furniture surface physical and chemical properties test Part 8.Determination of wear resistance Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

Preface III Introduction V 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Principle 1 5 Instruments and Materials 2 5.1 Cleaning cloth 2 5.2 Calibration plate 2 5.3 Sand cloth strip 2 5.4 Abrasion meter 2 5.5 Balance 2 5.6 Constant temperature and humidity chamber 2 5.7 Diffuse light source 2 6 Preparation and preprocessing 2 6.1 Preprocessing 2 6.2 Test surface 3 6.3 Preparation of test surface 3 7 Test Step 3 7.1 Preparation of grinding wheel 3 7.2 Abrasive cloth calibration 3 7.3 Wear of test area 4 7.4 Assessment of initial wear points 4 8 Result evaluation5 8.1 Rating by number of revolutions5 8.2 Rating by level 5 9 Test report 5 Appendix A (informative) Calibration and maintenance of Taber abrasion meter 6 A.1 General 6 A.2 Equipment 6 A.3 Procedure 6 Appendix B (Normative) Examples and Grading of Wear Marks 9 Reference 11

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 8 of GB/T 4893 "Physical and Chemical Properties Testing of Furniture Surface Paint Films". GB/T 4893 has released the following part. ---Part 1.Determination of resistance to cold liquids; ---Part 2.Determination of heat and moisture resistance; ---Part 3.Determination of dry heat resistance; ---Part 4.Adhesion cross-cutting determination method; ---Part 5.Thickness determination method; ---Part 6.Gloss determination method; ---Part 7.Determination of resistance to hot and cold temperature difference; ---Part 8.Determination of wear resistance; ---Part 9.Impact resistance determination method. This document replaces GB/T 4893.8-2013 "Physical and Chemical Properties Testing of Furniture Surface Paint Films Part 8.Determination of Wear Resistance" and is consistent with Compared with GB/T 4893.8-2013, in addition to structural adjustments and editorial changes, the main technical changes are as follows. ---Changed the scope of the standard (see Chapter 1, Chapter 1 of the.2013 edition); ---Added description of laminates (see Chapter 1); ---Added normative reference documents (see Chapter 2); --- Added terms and definitions, including test surface, test sample, test area, color rendering index (see Chapter 3); ---Changed the principle (see Chapter 4, Chapter 2 of the.2013 edition); ---Added instruments and materials, including cleaning cloth, calibration plate, emery cloth strip, balance, constant temperature and humidity chamber, diffuse light source, changed the abrasion meter, Deleted grinding wheel dresser, rubber grinding wheel, vacuum cleaner (see Chapter 5, Chapter 3 of the.2013 edition); ---Added the conditioning environment, including temperature and humidity conditioning requirements for test samples and conditioning requirements for abrasive cloth strips (see 6.1); ---The requirements for the test surface have been changed, including the placement conditions in the environment, and it can also be prepared on finished furniture that has been completely dried. The sample is tested directly (see 6.2, 4 of the.2013 edition); ---Added the preparation of the test area, including drawing a diagonal line on the test surface and dividing it into 4 areas (see 6.3); ---Added grinding wheel preparation (see 7.1); ---Added the calibration of emery cloth (see 7.2); ---Changed the grinding of the test area, including changing the size of the force, the timing of replacing the emery cloth, and the number of wear revolutions (see 7.3,.2013 versions 6.2, 6.3 and 6.4); ---Added the evaluation of initial wear points (see 7.4); ---Changed the result evaluation criteria (see Chapter 8, Chapter 7 of the.2013 edition); ---Added test report (see Chapter 9); ---Added Appendix B wear mark examples (see Appendix B). This document is modified to adopt ISO 4211-5.2021 "Furniture Surface Finish Testing Part 5.Wear Resistance Assessment". The technical differences between this document and ISO 4211-5.2021 and their reasons are as follows. ---Replaced ISO 6506-1 (see 5.2) with GB/T 231.1, which is a modified international standard to adapt to my country's technical conditions; ---Replaced ISO 9352 (see 5.4) with GB/T 5478, which is equivalent to the international standard, to adapt to my country's technical conditions; ---Replaced ISO 3668 (see 5.7) with GB/T 9761, which is equivalent to the international standard, to adapt to my country's technical conditions; --- Increased the number of times the calibration plate can be used on one side (see 5.2) to reduce the impact of excessive wear of the calibration plate on the calibration results; ---Changed the parameters of the abrasive cloth strip (see 5.3, see 5.3 of ISO 4211-5.2021) to improve the operability of the abrasive cloth strip calibration; ---Deleted "one standard atmosphere" (see 5.6 of ISO 4211-5.2021) to improve the operability of the standard; ---Added the evaluation method of rating results by grade (see Chapter 8), which is consistent with the evaluation method of other rating standards in GB/T 4893 consistent; consistent; ---Added wear mark classification and changed the nature of the appendix (see Appendix B) to provide a basis for result rating. The following editorial changes have been made to this document. ---In order to coordinate with the existing standards, the name of the standard is changed to "Physical and Chemical Properties Testing of Furniture Surfaces Part 8.Determination of Wear Resistance"; ---Change the measurement symbol "avg" in formula (1) to "m average". Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Light Industry Federation. This document is under the jurisdiction of the National Furniture Standardization Technical Committee (SAC/TC480). This document was drafted by. Shanghai Quality Supervision and Inspection Technology Research Institute, Zhejiang Light Industrial Products Quality Inspection Research Institute, Jiangxi Zhuoerjin Belongs to Equipment Group Co., Ltd., Kezhihua Inspection and Testing (Fujian) Co., Ltd., Henglin Home Furnishing Co., Ltd., and Mousse Healthy Sleep Co., Ltd. Co., Ltd., Jiangshan Mingli Furniture Co., Ltd., Dongguan Zhaosheng Furniture Industrial Co., Ltd. The main drafters of this document. Wang Jin, Liu Chenguang, Shen Guofeng, Zou Jia, Chen Xixi, Ni Lei, Nie Jianchun, Wang Xuefen, Wang Jianglin, Wang Liping, Wang Zhen, Chen Shichao. The previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 4893.8-1985 in 1985, first revised in.2013; ---This is the second revision.

Introduction

The physical and chemical properties of the paint film on the furniture surface include resistance to cold liquids, resistance to moisture and heat, resistance to dry heat, adhesion, thickness, gloss, resistance to hot and cold temperature differences, abrasion resistance and Impact, etc., GB/T 4893 "Physical and Chemical Properties Testing of Furniture Surfaces" is planned to consist of nine parts. ---Part 1.Determination of resistance to cold liquids; ---Part 2.Determination of heat and moisture resistance; ---Part 3.Determination of dry heat resistance; ---Part 4.Adhesion cross-cutting determination method; ---Part 5.Thickness determination method; ---Part 6.Gloss determination method; ---Part 7.Determination of resistance to hot and cold temperature difference; ---Part 8.Determination of wear resistance; ---Part 9.Impact resistance determination method. This document is Part 8 of GB/T 4893.It specifies the measurement method of wear resistance and evaluates the ability of furniture surfaces to resist wear. It provides technical support for high furniture surface quality and standardized furniture market order, and provides technical guarantee for protecting the legitimate rights and interests of consumers. Furniture surface physical and chemical properties test Part 8.Determination of wear resistance

1 Scope

This document describes a method for determining the abrasion resistance of foil veneers, laminates, impregnated film veneers, stains and clear varnish surfaces. Note. Laminates include thermosetting resin-impregnated paper, high-pressure decorative laminates (HPL) and other sheets. The tests in this document can be carried out on unused parts of finished furniture, or on the same materials and surface decoration techniques as the furniture. Conduct the test on a test sample whose size meets the test requirements.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 231.1 Brinell hardness test of metallic materials Part 1.Test method (GB/T 231.1-2018, ISO 6506-1. 2014,MOD) GB/T 5478 Plastic rolling wear test method (GB/T 5478-2008, ISO 9352.1995, IDT) GB/T 9761 Visual color comparison of paints and varnishes (GB/T 9761-2008, ISO 3668.1998, IDT)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 test surface testsurface The surface portion of the test specimen. 3.2 Test sample testpanel A test piece with a test surface. Note. The test sample can be cut from the furniture, or an independent sample made in the same way as the furniture. 3.3 testarea Part of the test surface under the grinding wheel wrapped with a gauze strip (5.3). 3.4 color rendering index colorrenderingindex Ra A unitless number that specifies the relationship between the color of an object illuminated by a light source and the color of a reference light source.

4 Principles

This test simulates the wear resistance of the furniture surface being tested. The test uses a pair of grinding wheels wrapped with abrasive cloth strips to rotate in counter-rotation under load. ......

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