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GB/T 45457.2-2025 English PDF

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US$519.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45457.2-2025: Non-destructive testing of heavy duty gas turbine blades and vanes - Part 2: Visual testing
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45457.2-2025	519	Add to Cart	5 days	Non-destructive testing of heavy duty gas turbine blades and vanes - Part 2: Visual testing	Valid

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Basic data

Standard ID: GB/T 45457.2-2025 (GB/T45457.2-2025)
Description (Translated English): Non-destructive testing of heavy duty gas turbine blades and vanes - Part 2: Visual testing
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 19.100
Word Count Estimation: 26,279
Date of Issue: 2025-03-28
Date of Implementation: 3/28/2025
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45457.2-2025: Non-destructive testing of heavy duty gas turbine blades and vanes - Part 2: Visual 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.
ICS 19.100 CCSJ04 National Standard of the People's Republic of China Nondestructive testing of heavy-duty gas turbine blades Part 2.Visual inspection Part 2.Visual testing Released on 2025-03-28 2025-03-28 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General Principles 1 5 Detection Technology 2 6 Quality Control 5 7 Assessment and Recording 5 8 Test Report 6 Appendix A (Informative) Recommended detection inner diameter range of commonly used endoscope probes 7 Appendix B (Informative) Endoscope Dimension Measurement 8 Appendix C (Informative) Vision Inspection System Resolution Calibration Method 10 Appendix D (Informative) Typical defect diagram of leaves 11

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 for standardization documents" Drafting. This document is Part 2 of GB/T 45457 "Nondestructive Testing of Heavy Gas Turbine Blades". GB/T 45457 has been published as follows part. --- Part 1.Radiographic testing; --- Part 2.Visual inspection. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Standardization of Nondestructive Testing (SAC/TC56). This document was drafted by. China United Heavy Duty Gas Turbine Technology Co., Ltd., Shanghai Materials Research Institute Co., Ltd., Suzhou Tianhe CEC Electric Power Engineering Technology Co., Ltd., Institute of Metal Research, Chinese Academy of Sciences, Northwestern Polytechnical University, Jiangsu Yonghan Special Alloy Technology Co., Ltd., Yingliu Hangyuan Power Technology Co., Ltd., Nantong Hitech Precision Materials Co., Ltd., China National Nuclear Power Plant Operation Service Technology Co., Ltd., China National Nuclear Corporation Nuclear Power Operation Management Co., Ltd. The main drafters of this document are. Shu Guogang, Ding Jie, Sun Jian, Jiang Jiansheng, Luo Jie, Liu Wei, Liu Shun, Wu Hong, Guo Yun, Ma Yaofei, Li Tianhao, Dong Jiasheng, Huang Chunjie, Ge Bingming, Fu Maohou, Li Qiuda, Lai Xinhua, Chen Hua, Xia Fengyuan, Mao Lizheng.

Introduction

Blades are the core hot end components of heavy-duty gas turbines that convert thermal energy into mechanical energy. Their quality control is crucial to the safe operation of gas turbines. Nondestructive testing technology is the main means of quality control for heavy-duty gas turbine blades. Heavy-duty gas turbine blades are hollow precision castings. The components are large in size, have complex internal cooling structures, and have large variations in shape, curvature, and thickness, making nondestructive testing difficult. Blade non-destructive testing, establish and unify the requirements for equipment, process, etc. for non-destructive testing of heavy-duty gas turbine blades, and formulate this series of standards. GB/T 45457 "Non-destructive testing of heavy-duty gas turbine blades" aims to establish non-destructive testing methods for heavy-duty gas turbine blades. GB/T 45457 is intended to consist of 2 parts. --- Part 1.Radiographic testing. The purpose is to determine the radiographic testing method for heavy-duty gas turbine blades. --- Part 2.Visual inspection. The purpose is to determine the visual inspection method for heavy-duty gas turbine blades. This document is Part 2 of GB/T 45457 and specifies the specific technical requirements for the visual inspection method for heavy-duty gas turbine blades. Fan, plays a technical support role in the visual inspection of heavy-duty gas turbine blades. Nondestructive testing of heavy-duty gas turbine blades Part 2.Visual inspection

1 Scope

This document establishes the general principles of visual inspection methods for heavy-duty gas turbine blades and specifies the inspection techniques, quality control, assessment and Requirements for records and test reports. This document is applicable to the visual inspection of high temperature alloy blades of heavy-duty gas turbines, and other industrial gas turbine blades may be implemented for reference.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 12604.14 Nondestructive testing terminology Part 14.Visual testing GB/T 15135 Gas Turbine Vocabulary GB/T 20737 General terms and definitions for non-destructive testing GB/T 20968 Selection of low-power magnifying glasses as auxiliary tools for non-destructive testing visual inspection GB/T 41856.1 Non-destructive testing Industrial endoscope visual testing Part 1.Method

3 Terms and definitions

The terms and definitions defined in GB/T 12604.14, GB/T 15135 and GB/T 20737 apply to this document.

4 General Principles

4.1 Equipment and Materials Visual inspection equipment and instruments include light sources, observation aids and measuring equipment. Direct visual inspection uses the following equipment and devices. ---Auxiliary light source; ---magnifier; ---Reflector; --- Length measuring equipment such as ruler, tape measure, vernier caliper, film ruler, etc.; ---Resolution test card; ---Luminance meter. Indirect visual inspection uses the following equipment and devices. ---Auxiliary light source; ---Endoscope 1); 1) Endoscopes include video endoscopes, fiber optic endoscopes and optical straight-rod endoscopes. ---Camera system; ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45457.2-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45457.2-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45457.2-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45457.2-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.