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GB/T 44194-2024: Additive manufacturing - Technical specification for reuse of metal powder
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| GB/T 44194-2024 | English | 439 |
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Additive manufacturing - Technical specification for reuse of metal powder
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GB/T 44194-2024
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Basic data | Standard ID | GB/T 44194-2024 (GB/T44194-2024) | | Description (Translated English) | Additive manufacturing - Technical specification for reuse of metal powder | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H70 | | Classification of International Standard | 25.030 | | Word Count Estimation | 22,253 | | Date of Issue | 2024-07-24 | | Date of Implementation | 2024-07-24 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 44194-2024: Additive manufacturing - Technical specification for reuse of metal powder---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Additive manufacturing - Technical specification for reuse of metal powder
Technical Specifications for Recycling of Metal Powders for Additive Manufacturing
ICS 25.030
CCS H 70
National Standard of the People's Republic of China
Released on 2024-07-24
2024-07-24 implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface ...
1 Scope ...
2 Normative referenced documents ...
3 Terms and Definitions ...
4 General requirements ...
4.1 Reuse Strategy ...
4.2 Testing requirements ...
4.3 Key points for process implementation ...
5 Powder Recycling Strategy ...
Appendix C (Informative) Calibration and Verification Requirements ...
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Additive Manufacturing Standardization Technical Committee (SAC/TC 562).
This document was drafted by. AECC Commercial Aircraft Engine Co., Ltd., Xi'an National Research Institute of Additive Manufacturing Co., Ltd.,
Wuxi Inspection, Testing and Certification Institute, Nanjing University of Aeronautics and Astronautics Wuxi Research Institute, Zhejiang Flashcast Group Co., Ltd., Beijing Yuding Additive Manufacturing Co., Ltd.
China National Nuclear Corporation, China National Nuclear Corporation, China Avic-Mate Additive Technology (Beijing) Co., Ltd.
China Food and Drug Inspection Institute, Beijing Power Machinery Research Institute, China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd., Taihang
National Laboratory, Nanjing University of Aeronautics and Astronautics, China Classification Society, Northwest Research Institute of Nonferrous Metals, Shanghai Institute of Materials Co., Ltd., Nanjing
Chenglian Laser Technology Co., Ltd., Nanjing Shangji Additive Manufacturing Research Institute Co., Ltd., Beijing Chunlizhengda Medical Equipment Co., Ltd.,
Xiamen Hanyin Co., Ltd., Shizuishan BMW Xingqing Special Alloy Co., Ltd., and Xi'an Sailon Additive Technology Co., Ltd.
The main drafters of this document are. He Yanli, Lei Liming, Hou Ying, Zhang Dongbing, Hu Juan, Shen Lida, Li Haofeng, Qian Tingting, Dong Dingping,
He Gongning, Gao Zhengjiang, Wang Jian, Ma Rui, Xue Lian, Shi Lei, Dai Ning, Zhou Hansen, Zhang Xuezhe, Yang Qiyun, Wang Lin, Chen Xiaolong,
Xie Fengbao, Lin Jinyi, Wei Chuanglin, Che Qianying.
Technical Specifications for Recycling of Metal Powders for Additive Manufacturing
1 Scope
This document specifies the general requirements, strategies, testing requirements and process control requirements for the reuse of metal powders for additive manufacturing.
This document is applicable to the development and testing of metal powder reuse strategies for non-continuous, single-material powder bed fusion and directed energy deposition processes
Determination and process control are required, and the reuse of other process powders can be referred to in the same way.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
GB/T 35351 Terminology for Additive Manufacturing
GB/T 39251-2020 Methods for characterizing properties of metal powders for additive manufacturing
3 Terms and definitions
The terms and definitions defined in GB/T 35351 and GB/T 39251 and the following apply to this document.
3.1
Recovered powder
Mixed powder recovered from the equipment feed area, forming area, overflow area and inside the part.
Note. If the powder recovered from the feeding area is stored separately as original powder, it is not considered as recovered powder.
3.2
Recycled powder
The powder obtained after sieving, drying, mixing or reprocessing the recovered powder according to regulations after recovery.
3.3
Reconditioning
A series of treatments are performed on the recycled powder to adjust the particle morphology, particle size distribution, surface chemical composition and residual moisture of the powder.
to meet applicable powder specifications.
Note. Usually includes magnetic separation, crushing, air flow classification and other processes.
3.4
Powder blending
The process of blending powders meeting the same powder specification so that the powder properties remain consistent throughout.
NOTE. The powders to be mixed can be recycled powders from one or more equipment, using the same raw material batch and having similar process history, or
Different batches of raw materials meeting the same powder specification.
3.5
Powder recycling
The recovered powder is screened, dried, mixed or reprocessed to meet the applicable powder specifications for the next forming cycle.
period, and conduct a series of activities such as testing during use.
Note. The number of cycles for recycled powder after one forming cycle is 1.
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