GB/T 31214.2-2021 English PDFUS$279.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 31214.2-2021: Springs - Shot peening - Part 2: Cut wire shot technical specification and testing Status: Valid
Basic dataStandard ID: GB/T 31214.2-2021 (GB/T31214.2-2021)Description (Translated English): Springs - Shot peening - Part 2: Cut wire shot technical specification and testing Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J26 Word Count Estimation: 14,131 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 31214.2-2021: Springs - Shot peening - Part 2: Cut wire shot technical specification and testing---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. Springs - Shot peening - Part 2.Cut wire shot technical specification and testing ICS 21.160 CCSJ26 National Standards of People's Republic of China Spring shot peening part 2.steel wire cut shot Technical requirements and testing Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is the second part of GB/T 31214 "Spring Shot Peening". GB/T 31214 has released the following parts. ---Part 1.General rules; ---Part 2.Technical requirements and testing of steel wire cut shots. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Spring Standardization Technical Committee (SAC/TC235). Drafting organizations of this document. Jiangsu Daqi Metal Surface Treatment Co., Ltd., China Machinery Productivity Promotion Center, Yancheng Lesha Shot Blasting Equipment Co., Ltd. Company, Dongtai Yiyang Metal Products Factory, Hangzhou Fuchun Spring Co., Ltd., Zhejiang Yisiling Shuangdi Spring Co., Ltd., Zhejiang Jinchang Spring has Co., Ltd., Yancheng Saipu Metal Products Co., Ltd., Huawei Technology Co., Ltd., Hubei Xinbaoma Spring Co., Ltd. The main drafters of this document. Wang Qi, Yu Fang, Wu Xiaodong, Fei Aidong, Jiang Guoyan, Lou Fendi, Fei Qingmin, Wang Yadong, Fang Zhou, Wang Dehai, Qi Liping, Lu Peigen, Feng Wenjie.IntroductionShot peening is one of the effective methods to improve the fatigue life of springs, and it is widely used in spring manufacturing. Mainly focus on film at home and abroad Several factors that affect the quality of spring shot peening. the implementation of shot peening, shot peening medium, shot peening effect detection, shot peening equipment, shot peening process Control to carry out research, China has formulated GB/T 31214 "Spring Shot Peening" and GB/T 39520-2020 "Spring Residual Stress X-ray diffraction test method. GB/T 31214 "Spring Shot Peening" is divided into two parts. ---Part 1.General rules. By introducing the residual compressive stress on the surface, it can improve its fatigue resistance and stress corrosion cracking resistance. Purpose It is to specify the general requirements for spring peening. ---Part 2.Technical requirements and testing of steel wire cut shots. The purpose is to specify the terms, specifications, etc. of cut steel wire shot for spring shot peening Levels, technical requirements and testing methods to guide spring manufacturers to accept qualified products. Spring shot peening part 2.steel wire cut shot Technical requirements and testing1 ScopeThis document specifies the specifications, technical requirements and testing methods of cut steel wire shot for spring shot peening. This document is applicable to steel cut steel shots made by cold-drawn steel wire cutting and passivation processing used for spring shot peening to improve the fatigue life of the spring. (Referred to as pellets).2 Normative referencesThe contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 4357 Cold drawn carbon spring steel wire GB/T 19816.1 Test method for metal abrasives for blast-cleaning of steel surface treatment before coating. Part 1.Sampling YB/T 5311 Carbon spring steel wire for important purposes3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Cutwireshot CCW Metal pellets for shot blasting and shot peening are made of cold-drawn steel wire cut and passivated particles. 3.2 Servicelife The number of cycles a pellet can withstand before its size becomes unusable. 3.3 Standard life shots standarddurabilitycutwireshot CCW-SD The pellets whose service life can meet the standard service life range. 3.4 Long-life pellets highdurabilitycutwireshot CCW-HD The pellets whose service life can meet the long-life standard range. 3.5 Retainedrate The ratio of pellets and residues remaining on the sieve to the total amount after screening by the sieve is expressed as a percentage. ...... |
