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GB/T 46478-2025Magnetizing method of permanent magnet (English PDF)

永磁体磁化方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 2, 2025

Implementation date

July 1, 2026

Scope

GB/T 46478-2025 is the English-translated version of 永磁体磁化方法.

GB/T 46478-2025 is the Chinese standard "Magnetizing method of permanent magnet". Its scope clause reads: This document outlines the magnetization principle of permanent magnets, specifies the requirements for magnetization devices, samples, and magnetization procedures, and describes different types of magnetization.

The effectiveness testing method specifies the requirements for the product magnetization report. This document applies to the technology of processing permanent magnets from permanent magnet materials such as rare earth iron boron, rare earth cobalt, AlNiCo, Samarium iron nitrogen, and permanent magnet ferrite. magnetization. Its clauses include terms and definitions; principle of magnetization.

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Document preview — GB/T 46478-2025

National Standard of the People's Republic of China

ICS: 29.030
Classification: K 14

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references

1 Scope

This document outlines the magnetization principle of permanent magnets, specifies the requirements for magnetization devices, samples, and magnetization procedures, and describes different types of magnetization.

The effectiveness testing method specifies the requirements for the product magnetization report.

This document applies to the technology of processing permanent magnets from permanent magnet materials such as rare earth iron boron, rare earth cobalt, AlNiCo, Samarium iron nitrogen, and permanent magnet ferrite.

magnetization.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2900.60-2002 Electrical Engineering Terminology. Electromagnetism

GB/T 2900.83-2008 Electrical Engineering Terminology. Electrical and Magnetic Devices

GB/T 3217-2013 Magnetic Test Methods for Permanent Magnet (Hard Magnetic) Materials

GB/T 9637-2001 Electrical Engineering Terminology. Magnetic Materials and Components

GB/T 38437-2019 Method for measuring the magnetic dipole moment of ferromagnetic material samples by pull-out or rotation

GB/T 43264-2023 Test Method for Magnetic Field Distribution on the Surface of Permanent Magnets

GB/T 43266-2023 Method for measuring magnetic declination of permanent magnets

3 Terms and Definitions

The definitions in GB/T 2900.60-2002, GB/T 2900.83-2008, GB/T 9637-2001, and GB/T 3217-2013, and the following...

The terms and definitions listed apply to this document.

3.1

A magnetization method that produces a single pair of magnetic poles on the same magnet.

3.2

A magnetization method that produces two or more pairs of magnetic poles on the same magnet.

3.3

The equipment parameters set when magnetizing the sample.

4 Principle of Magnetization

Magnetic materials are macroscopically magnetized by internal magnetic domain rotation and domain wall displacement under the action of an external magnetic field, as shown in Figure 1.

GB/T 38090 | GB/T 3217 | GB/T 29628 | GB/T 47344 | GB/T 46476 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 32 pages — is available in the English PDF.

Referenced standards

Normative references

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