GB/T 3848-2017 in English
VALIDHardmetals-Determination of (the magnetization) coercivity
- Issued on:2017-09-29
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 3848-2017硬质合金 矫顽（磁）力测定方法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC4（全国有色金属标准化技术委员会粉末冶金分会）执行，主管部门为中国有色金属工业协会。
Introduction
1. Standard Overview
GB/T 3848-2017 "Determination of Coercive (Magnetic) Force of Cemented Carbide" is a testing standard for cemented carbide materials containing ferromagnetic substances. This standard replaces the old version GB/T 3848-1983. The main changes include deleting the sample regulations, adding chart numbers and test report requirements.
2. Technical requirements of the standard
| Dimensions | Old version requirements | New version requirements |
|---|---|---|
| Sample regulations | Detailed regulations on sample preparation methods | Deleted relevant clauses |
| Test accuracy | Unclear accuracy requirements | 0.2kA/m for coercivity within 20kA/m, 1% for above |
| Figure numbers | No specific regulations | Added figure and table title numbers |
3. Technical Background and Evolution Analysis
The determination of the coercivity of cemented carbide is an important indicator for evaluating its magnetic properties. With the development of materials science, the new version of the standard has made important improvements in test accuracy and report standardization. In particular, more accurate magnetic field control equipment has been introduced, such as magnetic field generator and magnetization intensity measuring instrument.
4. Implementation Suggestions
4.1 Equipment Selection and Calibration
The test equipment must meet the requirements for magnetic field intensity control. It is recommended to use a magnetometer with high-precision adjustment function. Calibrate the equipment regularly to ensure that the measurement error is within the allowable range.
4.2 Operator Training
Operators should receive professional training and be familiar with magnetic field control and test procedures. Focus on mastering key technical points such as sample preparation, magnetic saturation state determination and demagnetization speed control.
4.3 Data Recording and Analysis
The test data must be recorded in detail and rounded off according to standard requirements. It is recommended to use professional software for data analysis to ensure the accuracy and reliability of the results.
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