GB/T 31967.1-2015 English PDF

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GB/T 31967.1-2015: Test method for physical property of rare earth permanent magnetic materials -- Part 1: Determination of temperature coefficient of magnetic flux
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Basic data

Standard ID: GB/T 31967.1-2015 (GB/T31967.1-2015)
Description (Translated English): Test method for physical property of rare earth permanent magnetic materials -- Part 1: Determination of temperature coefficient of magnetic flux
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 6,630
Date of Issue: 2015-09-11
Date of Implementation: 2016-08-01
Quoted Standard: GB/T 3217-2013; GB/T 9637
Regulation (derived from): National Standard Announcement 2015 No.25
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Standard specifies the rare earth permanent magnetic materials in an open magnetic flux open reversible temperature coefficient (��) test method. This Standard is suitable for all types of rare earth permanent magnet materials open reversible flux measured temperature characteristics. | �� | measurement range: 0.001%/�� ~ 0.4%/��.

GB/T 31967.1-2015: Test method for physical property of rare earth permanent magnetic materials -- Part 1: Determination of temperature coefficient of magnetic flux

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(Part 1 rare earth permanent magnet materials, physical performance test method. Determination of the temperature characteristics of the magnetic flux) ICS 77.120.99 H14 National Standards of People's Republic of China Rare earth permanent magnet materials, physical performance test method Part 1. Determination of the temperature characteristics of the magnetic flux Part 1. Determinationoftemperaturecoefficientofmagneticflux Issued on. 2015-09-11 2016-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 31967 "rare earth permanent magnet materials, physical performance test method" is divided into two parts. --- Part 1. Determination of the temperature characteristics of the magnetic flux; --- Part 2. flexural strength and fracture toughness determination. This section GB/T Part of 131,967. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National Standardization Technical Committee of rare earth (SAC/TC229) and focal points. This section is responsible for drafting unit. Iron and Steel Institute. Participated in the drafting of this section. Beijing Zhong Ke San Huan High-tech Co., Baotou Rare Earth Research Institute, Inner Mongolia Baotou Steel Rare Earth Magnetic Material Co., Ltd. The main drafters of this section. Li Wei, side to Kun, Zhuming Gang, Guo Zhaohui, Chen L, Sun Wei, Liu Zheng, Zhao Mingjing, Gu Jingdong, Cui Guohong. Rare earth permanent magnet materials, physical performance test method Part 1. Determination of the temperature characteristics of the magnetic flux

1 Scope

This section provides an open circuit in the rare earth permanent magnet material flux open reversible temperature coefficient (α) test method. This part suitable for all types of rare earth permanent magnet materials open reversible flux measured temperature characteristics. | Α | measurement range. 0.001%/℃ ~ 0.4%/℃.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 3217-2013 permanent magnet (magnetically hard) Standard Test Method for Magnetic Materials GB/T 9637 Electrotechnical terminology Magnetic materials and components

3 Terms and Definitions

GB/T 9637 defined by the following terms and definitions apply to this document. 3.1 Flux magneticflux Magnetic flux density area points letter Ф usually expressed in units of Weber (Wb). 3.2 Open flux reversible temperature coefficient open-circuitreversaltemperaturecoefficientofmagneticflux Due to temperature changes caused by changes in the relative ratio of the temperature change in magnetic flux, the letter α usually expressed as a percentage per unit intake Degrees Fahrenheit (%/℃).

4 principle of the method

After saturation magnetization of the sample and the appropriate steady magnetic treatment, the use of open magnetic flux magnetic flux measurement system tests at two temperatures by calculating Obtained in these two temperature ranges open sample reversible temperature coefficient of magnetic flux.

5 devices and equipment

5.1 Open measuring device 5.1.1 Temperature coefficient flux measuring device consists of a main part. Sample fixtures, measuring coil (Helmholtz coils), temperature control device, High precision and low drift integrator, computer control systems. Measuring equipment configuration shown in Figure 1. ......

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