GB/T 31967.1-2015Test method for physical property of rare earth permanent magnetic materials - Part 1: Determination of temperature coefficient of magnetic flux (English PDF)
稀土永磁材料物理性能测试方法 第1部分：磁通温度特性的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 11, 2015
Implementation date
August 1, 2016
Scope
GB/T 31967.1-2015 is the English-translated version of 稀土永磁材料物理性能测试方法 第1部分：磁通温度特性的测定.
GB/T 31967.1-2015 is the Chinese standard "Test method for physical property of rare earth permanent magnetic materials - Part 1: Determination of temperature coefficient of magnetic flux".
Its scope clause reads: This section provides an open circuit in the rare earth permanent magnet material flux open reversible temperature coefficient (alpha) test method.
This part suitable for all types of rare earth permanent magnet materials open reversible flux measured temperature characteristics. | alpha | measurement range.
0.001%/°C ~ 0.4%/°C. Its clauses include terms and definitions; principle of the method; devices and equipment.
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Document preview — GB/T 31967.1-2015
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 14
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 0.4%/°C.
- 2 Normative references
- 3 Terms and Definitions
- 3.
1 Scope
This section provides an open circuit in the rare earth permanent magnet material flux open reversible temperature coefficient (alpha) test method.
This part suitable for all types of rare earth permanent magnet materials open reversible flux measured temperature characteristics. | alpha | measurement range. 0.001%/°C ~
0.4%/°C.
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
3.2 Open flux reversible temperature coefficient
Due to temperature changes caused by changes in the relative ratio of the temperature change in magnetic flux, the letter alpha usually expressed as a percentage per unit intake
Degrees Fahrenheit (%/°C).
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.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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