GB/T 1482-2022 in English
VALIDMetallic powders—Determination of flow rate—Calibrated funnel methods（Hall flowmeter）
- Issued on:2022-12-30
- Implemented on:2023-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 1482-2022金属粉末 流动性的测定 标准漏斗法（霍尔流速计）》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
Interpretation of the standard for determination of metal powder fluidity
| Dimensions | Old standard GB/T1482-2010 | New standard GB/T1482-2022/ISO4490:2018 |
|---|---|---|
| Funnel hole size | D=2.50 mm | D=2.50 mm |
| Powder weighing accuracy | 50g | 50g±0.1g |
| Calibration requirements | No clear requirements | Increase the funnel roughness Ra≤0.4μm |
Standard formulation background and technology evolution analysis
Background:Metal powder fluidity is an important indicator for evaluating its process performance and is widely used in powder metallurgy, 3D printing and other fields. Since its first release in 1979, the GB/T1482 standard has undergone three revisions and gradually aligned with international standards.
Technology evolution:From analog measurement to digital recording, from single aperture to multi-dimensional calibration, the standard has been continuously optimized to meet the needs of high-precision, mass production. The new version of the standard introduces stricter funnel calibration requirements and deviation control to ensure data comparability and consistency.
Instruments and operating specifications
- Standard funnel:Made of non-magnetic, corrosion-resistant material, aperture D=2.50 mm, roughness Ra≤0.4μm.
- Balance:Accurate to ±0.05g, to ensure the accuracy of powder weighing.
- Stopwatch:Accurate to ±0.1s, to record the powder flow time.
- Standard corundum:Used for funnel calibration, required to be dried before use.
Implementation recommendations
Laboratory configuration:Equipped with standard funnels, balances and stopwatches that meet the requirements, and calibrate the equipment regularly to ensure measurement accuracy.
Operation training:Provide standardized training for experimental personnel, focusing on mastering the standardized process of powder weighing, funnel use and data recording.
Quality control:Establish a data review mechanism to ensure that the test results of each batch meet the precision requirements. For abnormal results, the cause should be identified and corrective measures should be taken.
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