GB/T 19346.1-2017Amorphous and nanocrystalline alloys measurement methods—Part 1: AC magnetic properties by the use of ring specimens (English PDF)
非晶纳米晶合金测试方法 第1部分：环形试样交流磁性能
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 28, 2017
Implementation date
November 1, 2017
Scope
GB/T 19346.1-2017 is the English-translated version of 非晶纳米晶合金测试方法 第1部分：环形试样交流磁性能.
GB/T 19346.1-2017 is Part 1 of the Chinese test methods for amorphous and nanocrystalline alloys, and specifies how to measure AC magnetic properties on wound ring specimens made from strip.
It covers the relative amplitude permeability, specific total loss and specific apparent power of amorphous and nanocrystalline soft magnetic alloys used in transformers, inductive components and magnetic shielding, over the frequency range from 50 Hz to 200 kHz; with suitable calibrated instruments the upper limit can go to 1 MHz with relaxed reproducibility.
The general rules deal with the specimen: a recommended diameter of 35 mm ± 2 mm with a diameter ratio below 1.25, flatness and freedom from burrs, and heat treatment on a non-ferromagnetic support in a protective atmosphere.
It replaces GB/T 19346-2003, was issued on 28 February 2017 and has applied since 1 November 2017.
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Document preview — GB/T 19346.1-2017
National Standard of the People's Republic of China
- ICS
- 77.040.99
- Classification
- H 21
- Replacing
- GB/T 19346-2003
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative reference documents
- 3 Terms and definitions
- 4 General rules
Foreword
This part is part 1 of GB/T 19346.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part of the replacement GB/T 19346-2003 "amorphous nanocrystalline soft magnetic alloy AC magnetic properties test method". Compared with GB/T 19346-2003, the main contents are as follows.
--- name changed to "amorphous nanocrystalline alloy test method part 1. ring sample AC magnetic performance";
- Added terms and definitions (see Chapter 3);
- removed the voltammetric method of AC magnetic measurement (see Chapter 3 of the 2003 edition);
- Added general rules and modified sample requirements (see Chapter 4, Chapter 4 of the 2003 edition);
- Added technical requirements for digital peak ammeter, voltage digital-to-analog converters and power meters (see 5.4, 5.5, 5.16, 2003) Chapter 6);
- a method of measuring the permeability and magnetization curves by voltammetry (see Chapter 6);
- Removal of the voltammetric method (see 5.1 of 2003);
- increased method of measuring total loss with a power meter (see Chapter 7);
- modified and supplemented the digital sampling method and increased the measurement method of apparent power (see Chapter 8, Edition 5.2 of 2003);
- Increased requirements for reproducibility and uncertainty assessment of measurement results (see Chapter 9);
- Added the measurement report (see Chapter 10, Chapter 8 of the 2003 edition).
This part is made by China Iron and Steel Industry Association.
This part is headed by the National Steel Standardization Technical Committee (SAC/TC183).
1 Scope
This part of GB/T 19346 specifies the measurement method for the alternating magnetic properties of amorphous nanocrystalline alloy wound ring specimens.
This part is suitable for measuring a variety of transformer and inductance components and magnetic shielding with amorphous nanocrystalline soft magnetic alloy at 50Hz ~ 200kHz frequency range of the relative amplitude of the permeability, than the total loss, compared to the apparent power AC magnetic performance. If there is a suitable calibration Of the instrument, the frequency upper limit can be extended to 1MHz, but this time the reproduction should be appropriate to relax the requirements.
2 Normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 2900.1 Basic terminology for electrical terminology
Electrotechnical terminology - Magnetic materials and components
3 Terms and definitions
GB/T 2900.1 and GB/T 9637 and the following terms and definitions apply to this document.
3.1 Specific total loss
The total power absorbed by the unit mass of the homogeneous magnetized material in watts per kilogram (W/kg).
3.2 Specific apparent power
The total apparent power delivered to the uniform magnetization of the unit mass in volts per kilogram (VA/kg).
4 General rules
4.1 Specimen
4.1.1 Measurement of AC magnetic properties of amorphous nanocrystalline soft magnetic alloys An annular specimen made of strip is used. If no special requirements, winding system The strip surface does not take insulation measures when the sample is taken.
4.1.2 Recommended specimen diameter of 35mm ± 2mm, the sample diameter and diameter ratio should be less than 1.25. If you need to use other feet The sample should be stated in the measurement report.
4.1.3 Specimens should be flat, burr, deformation and other defects.
4.1.4 The specimen shall be subjected to appropriate heat treatment prior to measurement. Specimen in the heat treatment process, should use non-ferromagnetic metal or ceramic lining support Hold the specimen inside the window to prevent the specimen from being deformed. The diameter of the lining should be slightly smaller than the diameter of the specimen and the height is comparable to that of the specimen. Sample heat treatment should be In a protective atmosphere to prevent surface oxidation.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
Similar standards
Editions of GB/T 19346.1
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 19346.1-2017 | Amorphous and nanocrystalline alloys measurement methods—Part 1: AC magnetic properties by the use of ring specimens | current edition | Current |
| GB/T 19346-2003 | Amorphous and nanocrystalline alloys measurement methods—Part 1: AC magnetic properties by the use of ring specimens | previous edition | Superseded |
This page sells the current edition, GB/T 19346.1-2017. Earlier editions are listed for reference only.
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