GB/T 3217-2013Permanent magnet (magnetically hard) materials -- Methods of measurement of magnetic properties (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard replaces GB/T 3217-1992, Method of test of the magnetic properties of

permanent magnetic (magnetically hard) materials.

Compared with GB/T 3217-1992, the main changes of this Standard are as follows:

-- Add the content of terms;

-- Restructure according to the international standard;

-- Change the positions of diagrams and figures in accordance with the

international standard;

-- Add measurement principles in accordance with the international standard

(Chapter 4);

-- Delete the content of measuring demagnetization curve and recoil

permeability by impact method;

-- Delete Appendix A and Appendix B of the original standard; adjust Appendix

C of the original standard to Appendix B of this Standard and slightly modify

the content;

-- Add the influence of specimen temperature on measurement results

(Appendix A);

-- Add the corresponding chapter and article numbers of this Standard and IEC

60404-5:1993 Magnetic materials - Part 5: Permanent magnet (magnetically

hard) materials - Methods of measurement of magnetic properties and its 2006

amendment (1) (Appendix C);

-- Add the technical differences and their reasons between this Standard and IEC

60404-5:1993 Magnetic materials - Part 5: Permanent magnet (magnetically

hard) materials - Methods of measurement of magnetic properties and its 2006

amendment (1) (Appendix D).

This Standard modifies and adopts IEC 60404-5:1993 Magnetic materials - Part 5:

Permanent magnet (magnetically hard) materials - Methods of measurement of

magnetic properties and its 2006 amendment (1) by the redrafting method.

This Standard is partially restructured compared to IEC 60404-5:1993 and its 2006

amendment (1). Appendix C lists the comparison of chapter and clause numbers

between this Standard and IEC 60404-5:1993 and its 2006 amendment (1).

Permanent magnet (magnetically hard) materials - Methods

of measurement of magnetic properties

1 Scope

This Standard specifies the methods of measurement of magnetic properties for

permanent magnet (magnetically hard) materials.

This Standard applies to the measurement of magnetic properties of Al-Ni-Co

permanent magnet, ferrite permanent magnet, Fe-Cr-Co permanent magnet, rare earth

permanent magnet and other permanent magnet materials.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

GB/T 2900.4-2008, Electrotechnical terminology - Special alloys for electrical

equipment

GB/T 2900.60-2002, Electrotechnical terminology - Electromagnetism [eqv IEC

60050(121):1998]

GB/T 9637-2001, Electrotechnical terminology - Magnetic materials and

components [eqv IEC 60050(221):1990]

GB/T 24270-2009, Method of measurement of temperature coefficient of

magnetic properties of permanent magnetic materials

IEC60050(151), International electrotechnical vocabulary - Part 151: Electrical

and magnetic devices

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 2900.4-

2008, GB/T 2900.60-2002, GB/T 9637-2001 and IEC 60050(151) as well as those given

below apply.

3.1

demagnetization curve

11 Determination of the principal characteristics

12 Calibration of the test equipment