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Rolling bearings - Non-destructive testing - Magnetic particle testing
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Basic data
| Standard ID | GB/T 24606-2021 (GB/T24606-2021) |
| Description (Translated English) | Rolling bearings - Non-destructive testing - Magnetic particle testing |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J11 |
| Word Count Estimation | 9,935 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 24606-2021: Rolling bearings - Non-destructive testing - Magnetic particle 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.
Rolling bearings -- Non-destructive testing -- Magnetic particle testing
ICS 21:100:20
CCSJ11
National Standards of People's Republic of China
Replacing GB/T 24606-2009
Nondestructive testing of rolling bearings Magnetic particle testing
Published on 2021-12-31
2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
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"
drafted:
This document replaces GB/T 24606-2009 "Magnetic particle inspection for non-destructive testing of rolling bearings": Compared with GB/T 24606-2009,
Apart from editorial changes, the main technical changes are as follows:
a) Added some terms and definitions (see Chapter 3);
b) Modified the requirements for testing personnel (see Chapter 5, Chapter 5 of the:2009 edition);
c) increase the requirements for auxiliary equipment (see 6:2);
d) The requirement for particle size of magnetic powder is added (see 6:3:1);
e) Deleted the formula of magnetic suspension and added the requirements for carrier liquid (see 6:3:2, 6:3:2 of the:2009 edition);
f) Increase the requirements for magnetic suspension pollutants, the preparation of magnetic suspensions, the detection methods of pollutants and the water break test (see 6:3:3);
g) Modified and refined the requirements for standard test pieces and standard test blocks (see 6:4, 6:4 of the:2009 edition);
h) Modified the magnetization method (see Chapter 7, Chapter 8 of the:2009 edition):
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Standardization Technical Committee of Rolling Bearings (SAC/TC98):
This document is drafted by: Luoyang Bearing Research Institute Co:, Ltd:, Wafangdian Bearing Group Co:, Ltd:, Schaeffler (China) Co:, Ltd:
Company, Zhangjiagang Yiyang Precision Bearing Co:, Ltd:, Hefei Yuanda Bearing Forging Co:, Ltd:, Luoyang LYC Bearing Co:, Ltd:, Zhejiang Five
Zhou Xinchun Group Co:, Ltd:, Ningbo Cixing Bearing Co:, Ltd:, Wuxi Huayang Rolling Bearing Co:, Ltd:, Zhejiang Demei Bearing Co:, Ltd:
Company, Sheyang County Xiangsheng Testing Equipment Manufacturing Co:, Ltd:, Fujian Yongan Bearing Co:, Ltd:, Chongqing Changjiang Bearing Co:, Ltd:, Taiwan
City Yongning Bearing Manufacturing Co:, Ltd:, Dalian Metallurgical Bearing Co:, Ltd:, Jiangsu Saifu Flaw Detection Equipment Manufacturing Co:, Ltd:
The main drafters of this document: Gao Yuanan, Li Shenhua, Zhao Pumin, Li Yiwen, Luo Zhigang, Ma Zhenming, Chen Cuili, Wang Mingzhou, Xu Linyan, Li Kaiyuan,
Tang Qidong, Wu Shengliang, Yang Junsheng, Chen Zhengbin, Zhao Xingxin, Wang Jingmei, Du Yong, Yang Biao, Hulinzhuang:
The previous versions of this document and its superseded documents are as follows:
---GB/T 24606-2009;
---This is the first revision:
Nondestructive testing of rolling bearings Magnetic particle testing
1 Scope
This document specifies the procedures for wet magnetic particle testing of rolling bearing parts (hereinafter referred to as "parts"):
This document applies to bearing parts (including raw materials, blanks, semi-finished products, finished products, in-service maintenance parts) made of ferromagnetic materials on the surface and near
Magnetic particle inspection of surface defects:
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 261-2008 Determination of flash point Pensky-Martin closed cup method
GB/T 265-1988 Petroleum Products Kinematic Viscosity Determination Method and Dynamic Viscosity Calculation Method
GB/T 9445-2015 Qualification and certification of non-destructive testing personnel
GB/T 12604:5-2020 Nondestructive Testing Terminology Magnetic Particle Testing
GB/T 15822:2-2005 Nondestructive Testing Magnetic Particle Testing Part 2: Testing Media
GB/T 23907-2009 Test piece for non-destructive testing magnetic particle testing
JB/T 6641-2017 Rolling bearing residual magnetism and its evaluation method
JB/T 8290-2011 Nondestructive Testing Instrument Magnetic Particle Flaw Detector
3 Terms and Definitions
The terms and definitions defined in GB/T 12604:5-2020 and the following terms and definitions apply to this document:
3:1
equivalent diameter
Deff
The diameter of a cylinder that is the same as the perimeter of the part is the equivalent diameter of the part:
3:2
defect
A discontinuity of size, orientation, location, or nature that would impair the effective use of the part or fail to meet specified acceptance requirements:
3:3
central conductor method
A magnetization method in which the conductor passes through the center of the aperture of the inspected part, and after electrification, a circumferential magnetic field is formed in and around the inspected part:
[Source: GB/T 12604:5-2020, 2:5, with modifications]
3:4
Eccentric conductor method non-centralconductor
If the diameter of the hollow inspected part is too large, the magnetizing current provided by the flaw detector is not enough to make the surface of the inspected part reach the required magnetic field strength
When the mandrel is biased, the conductor can be inserted into the tested part and placed close to the inner surface of the tested part, and the current can pass through the conductor to form a circumferential magnetic field:
...
