GB/T 44194-2024 in English
VALIDAdditive manufacturing—Technical specification for reuse of metal powder
- Issued on:2024-07-24
- Implemented on:2024-07-24
- File Format:PDF
- Delivery:Via email within 5 business days
$359.00
《GB/T 44194-2024增材制造 金属粉末再利用技术规范》由TC562（全国增材制造标准化技术委员会）归口，TC562SC1（全国增材制造标准化技术委员会测试方法分会）执行，主管部门为中国机械工业联合会。
Introduction
1. Background and significance of standard formulation
Additive Manufacturing (AM) technology has developed rapidly in recent years. Metal powder, as its core material, is expensive and has limited resources. In order to improve resource utilization, reduce costs and reduce environmental impact, GB/T 44194-2024 "Technical Specification for Recycling of Metal Powders in Additive Manufacturing" came into being.
2. Standard Framework Analysis
| Chapter Contents | Core Clauses | Key Points for Interpretation |
|---|---|---|
| Scope | Applicable to the recycling of metal powders in non-continuous, single-material powder bed fusion and directed energy deposition processes. | Clearly define the applicable scenarios of the standard and highlight the technical focus. |
| Terms and Definitions | Redefine key concepts such as "recycled powder", "reused powder", etc. | Ensure industry terminology is unified to avoid ambiguity. |
| General Requirements | Specify requirements for test grading, powder isolation and calibration of handling devices. | Emphasis the importance of quality control and equipment management. |
3. Comparison of powder reuse strategies
Table A.1 Comparison of reuse strategies
The following are the advantages and disadvantages of different reuse strategies and recommended application scenarios:
| Strategy name | Advantages | Disadvantages | Recommended scenarios |
|---|---|---|---|
| Disposable powder | No need to frequently replenish the original powder, simple operation. | When the forming cycle is short, the processing volume is large, which increases the complexity of management. | Applicable to scenarios with large single forming demand. |
| Single filling powder is recycled | Convenient for powder management and process traceability to ensure consistency of material performance. | Multiple processing may cause powder stratification and affect the uniformity of chemical composition. | Applicable to equipment with fixed consumption per forming. |
4. Implementation suggestions
Key variable control:Humidity, temperature and gas composition are the core factors affecting powder performance, and a strict monitoring and control mechanism must be established.
Process environment optimization:Minimize the risk of powder oxidation through protective gas formulation and equipment calibration.
Equipment maintenance plan:Regularly check and replace wearing parts, such as screening nets, mixing tools, etc., to ensure long-term and stable operation of the processing device.
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