GB/T 7233.1-2023 PDF EnglishUS$500.00 · In stock · Download in 9 seconds
GB/T 7233.1-2023: Steel castings - Ultrasonic testing - Part 1: Steel castings for general purposes Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 7233.1: Historical versions
GB/T 7233.1-2023: Steel castings - Ultrasonic testing - Part 1: Steel castings for general purposes---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT7233.1-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.040.20 CCS J 31 Replacing GB/T 7233.1-2009 Steel Castings – Ultrasonic Testing – Part 1.Steel Castings for General Purposes (ISO 4992-1.2020, MOD) Issued on. MARCH 17, 2023 Implemented on. OCTOBER 01, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 Introduction... 5 1 Scope... 6 2 Normative References... 6 3 Terms and Definitions... 7 4 General Requirements... 8 5 Testing Method... 13 Appendix A (Informative) Structural Changes between this Document and ISO 4992- 1.2020... 23 Appendix B (Informative) Technical Differences and Their Causes between This Document and ISO 4992-1.2020... 25 Appendix C (Informative) Diameter of Sound Beam... 28 Appendix D (Informative) Display Type Generated by Typical Defects... 30ForewordThis Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. This Document is Part 1 of GB/T 7233 Steel Castings – Ultrasonic Testing. GB/T 7233 has published the following parts. --- Part 1.Steel Castings for General Purposes; --- Part 2.Steel Castings for Highly Stressed Components. This Document replaced GB/T 7233.1-2009 Steel Castings – Ultrasonic Examination – Part 1. Steel Castings for General Purposes. Compared with GB/T 7233.1-2009, the major technical changes of this Part are as follows besides the structural adjustments and editorial modifications. a) Change the material in the scope of application of the standard (see Clause 1 of this Edition; Clause 1 of the 2009 Edition); b) Change some normative references (see Clause 2 of this Edition; Clause 2 of the 2009 Edition); c) Add terms and definitions (see 3.5, 3.7 of this Edition); d) Add the relevant content of the maximum limit value of allowable defects (see 4.3.1, 4.3.2 of this Edition); e) Change the general principles of testing and the standards cited by equipment (see 5.1, 5.3.1~5.3.3 of this Edition; 5.1, 5.3.1~5.3.3 of the 2009 Edition); f) Add couplant, the preparation of scanning surface of steel castings, range setting, general principles of sensitivity adjustment, transmission correction, detection of defects, characteristics of defects and standards cited in general principles of quantification (see 5.3.4, 5.4, 5.5.2, 5.5.3.1~5.5.3.3, 5.5.7.1 of this Edition); g) Add reference test block (see 5.3.5 of this Edition). This Document modified and used ISO 4992-1.2020 Steel Castings – Ultrasonic Testing – Part 1.Steel Castings for General Purposes. Compared with ISO 4992-1.2020, this Document has more structural adjustments; see Appendix A for a list of changes in structure number between the two documents. Compared with ISO 4992-1.2020, this document has many technical differences, and the outer margins of the terms involved are marked with a vertical single line (|). See Appendix B for a list of these technical differences and their causes. This Document made the following editorial modifications. --- 3.6, delete NOTE of 3.8 in ISO 4992-1; --- Delete the bibliography. Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by and under the jurisdiction of National Technical Committee on Castings of Standardization Administration of China (SAC/TC 54). Chief drafting organizations of this Document. Shenyang Research Institute of Foundry Co., Ltd.; Anhui Yingliu Group Huoshan Casting Co., Ltd.; NCS Testing Technology Co., Ltd.; China Baoji Bridge Group Co., Ltd.; Zhejiang Dalong Special Materials Co., Ltd.; Lanzhou LS Testing Technology Co., Ltd.; Microgreat Casting Co., Ltd.; Xiangyang Jinnaite Machinery Co., Ltd.; Tongyu Heavy Industry Co., Ltd.; Jiangxi Fuling Casting Co., Ltd.; Jinyun County Creer Testing Equipment Co., Ltd.; Shandong Zhenting Jingong Piston Co., Ltd.; Shandong Automobile Manufacturing Co., Ltd.; Northern Heavy Industries Group Co., Ltd.; Yantai Standard Measurement Inspection Center; Erzhong (Deyang) Heavy Equipment Co., Ltd.; Harbin Electric Machinery Company Limited; CITIC Heavy Industries Co., Ltd.; CRRC Changchun Railway Vehicles Co., Ltd.; and CRRC Qiqihar Rolling Stock Co., Ltd. Chief drafting staffs of this Document. Li Xingjie, Li Jinmei, Sun Chungui, Guo Zongshan, Zhang Zhen, Du Yingliu, Shu Xuecheng, Zhang Jianing, Cheng Shancheng, Su Zaichun, Hou Chunyu, Ma Zhengqiang, Song Quanzhi, Tian Meng, Wang Lihua, Zhang Jianwei, Jiang Chunhong, Wang Hanchao, Xu Wenda, Wu Fangming, Du Ming, Zhang Zhouxu, Pang Wenhua, Liu Yuanyi, Wang Qingyu, Jia Guanfei, Shuai Dejun, Lu Qifeng, Haugn Liankai, Chen Tao, Cui Lanfang, Hu Zhonghua, Zu Yuwei, Wang Kai, Huang Weizhao, Liu Guanglei, Wang Yongfeng, Wei Zhihui, Zhang Wen, and Wang Xuan. The historical editions replaced by this Document are as follows. --- GB/T 7233 was first-time published in 1987; --- GB/T 7233.1 was first-time published in 2009; --- It is first-time revised hereby.1 ScopeThis Document specifies the general requirements and testing methods for ultrasonic testing of steel castings for general purposes. This Document applies to the ultrasonic testing of general-purposed steel castings having a grain refining heat treatment and a wall thickness not exceeding 600 mm. For steel castings with a wall thickness greater than 600mm, if there is no special requirement, refer to it.2 Normative ReferencesThe provisions in following documents become the essential provisions of this Document through reference in 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) is applicable to this Document. GB/T 9445 Non-destructive testing - Qualification and certification of NDT personnel (GB/T 9445-2015, ISO 9712.2012, IDT) GB/T 12604.1 Non-destructive testing – Terminology - Ultrasonic testing (GB/T 12604.1- 2020, ISO 5577.2017, MOD)3 Terms and DefinitionsFor the purposes of this Document, the terms and definitions given in GB/T 12604.1, GB/T 39240, GB/T 39242, GB/T 39292 and the following apply. A defect with two-dimensional measurable dimension. Welding to ensure that steel castings meet their required quality.4 General RequirementsThe most appropriate testing method shall be used to detect all inspected areas of the steel castings (if the shape of the steel castings allows). According to the size of steel castings to be assembled (finishing), it is divided into inner layer and outer layer, and the wall thickness division is shown in Figure 2.5 Testing MethodThe couplant that complies with GB/T 39240 shall be used; and the same couplant shall be used in the verification and subsequent testing. The coupling effect is checked using one or more bottom waves parallel to the bottom. For the recorded defective area (see 5.5.5), it shall be further verified the type, shape, size, and location. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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