GB/T 24606-2021Rolling bearings—Non-destructive testing—Magnetic particle testing (English PDF)

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).

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.