GB/T 40324-2021 English PDF

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GB/T 40324-2021: Non-destructive testing - Testing method for large diameter round bars by focused ultrasound
Status: Valid

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Basic data

Standard ID: GB/T 40324-2021 (GB/T40324-2021)
Description (Translated English): Non-destructive testing - Testing method for large diameter round bars by focused ultrasound��
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Word Count Estimation: 34,352
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40324-2021: Non-destructive testing - Testing method for large diameter round bars by focused ultrasound

---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.
Non-destructive testing-Testing method for large diameter round bars by focused ultrasound ICS 19.100 CCSJ04 National Standards of People's Republic of China Non-destructive testing large-diameter round rod focused ultrasonic testing method Released on 2021-05-21 2021-12-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principles of the method 2 5 General requirements 2 6 Testing procedure 6 7 Acceptance 8 8 Test record and test report 8 Appendix A (informative) Recommended single-element zone focus detection probe parameters 9 Appendix B (informative) Recommended partition inspection plan for different specifications of round bars 11 Appendix C (Informative) Acceptance of Special Titanium Alloy Round Bars (ϕ100mm~ϕ356mm) 16 Appendix D (informative) Recommended round bar comparison test block for ultrasonic zone focus detection 17 Appendix E (informative) Recommended round bar comparison test block for ultrasonic phased array testing 31

Foreword

This 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. 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 Standardization Technical Committee for Nondestructive Testing (SAC/TC56). Drafting organizations of this document. China Aviation Development Beijing Institute of Aeronautical Materials, Shanghai Institute of Materials Research, Matrix Science and Engineering Testing Technology (Beijing) Co., Ltd. Company, Baoti Group Co., Ltd., Western Superconducting Material Technology Co., Ltd., Fushun Special Steel Co., Ltd., Hunan Jintian Titanium Industry Division Technology Co., Ltd., Baowu Special Metallurgical Co., Ltd. The main drafters of this document. Liang Jing, Sha Zhengxiao, Shi Yiwei, Jiang Jiansheng, Huang Yin, Han Lina, Ding Jie, Jiang Yunxi, Ma Xiaohuai, Liu Jingzhou, Wang Jianguo, Wang Lijuan, Zhong Yuezheng, Jiang Yimin. Non-destructive testing large-diameter round rod focused ultrasonic testing method

1 Scope

This document specifies the general ultrasonic testing of large-diameter round rod water immersion zone focusing (multiple single-element focusing probes or ultrasonic phased array probes). Requirements, testing procedures and acceptance, etc. This document is applicable to special metal round bars (titanium alloys) with a diameter of not less than 100mm and prepared by forging, extrusion, rolling and other forming processes. Gold, superalloys, etc.) sub-regional focused ultrasonic testing of water immersion. Note. Special metal round bars mainly refer to higher material quality requirements, so higher detection sensitivity and signal-to-noise ratio are required to achieve the purpose of detecting small defects Metal round bars. It is mostly used to manufacture certain key components in the aerospace field.

2 Normative references

The 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 9445 Non-destructive testing personnel qualification and certification GB/T 12604.1 Non-destructive testing term Ultrasonic testing GB/T 20737 Non-destructive testing general terms and definitions GB/T 36439 Non-destructive testing aviation non-destructive testing personnel qualification and certification ASTME317 does not use electronic measuring instruments to evaluate the performance characteristics of pulse reflection ultrasonic testing systems (Standard Practicefor EvaluatingPerformanceCharacteristicsofUltrasonicPulse-EchoTestingInstrumentsandSystems withouttheUseofElectronicMeasurementInstruments) ASTME1065 Ultrasonic Probe Performance Evaluation Guide (Standard PracticeforEvaluatingCharacteristicsofUltra- sonicSearchUnits)

3 Terms and definitions

The following terms and definitions defined in GB/T 12604.1 and GB/T 20737 apply to this document. 3.1 Dynamic depth focusing;DDF In the ultrasonic phased array detection, the focus rule is controlled so that the sound beam is focused at a fixed depth in the inspected material when it is emitted, and the focus is at the same time when receiving. Change within a certain depth range. 3.2 Horizontallimit The maximum readable length of the horizontal scan line determined by the electronic or physical limits displayed by the A-type ultrasonic detector. 3.3 Vertical limit The maximum readable height of the display signal determined by the electronic or physical limits of the A-type ultrasonic detector. ......

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