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| Study on preparation of copper-base tee parts by warm flow compaction |
| YANG Yi1，DING Tao1，NI Dong-hui2 |
（1. School of Mechanical Engineering， Hubei Engineering University， Xiaogan 432000， China
2. Guangdong Key Laboratory for Advanced Metallic Materials Fabrication and Forming， School of Mechanical & Automotive Engineering， South China University of Technology， Guangzhou 510640， China） |
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Abstract The near net-shape manufacturing process of complex parts is always the development goal of warm flow compaction technology. The copper-based powder material was used as the research object， and the tee part green body was pressed at 85 ℃ by using the warm flow compaction process. Through a reasonable degreasing and sintering process， the tee part sample was successfully prepared. The degreasing process， microstructure and density of the sample were also analyzed. Results show that the copper-based tee sintered part without significant surface defects is obtained by keeping the temperature at 300 ℃ and 450 ℃ for 30 min respectively and slowly heating to 950 ℃ for sintering for 60 min. However， the parts density distribution is not uniform after sintering， and the lateral part density is significantly lower than the axial part.
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Received: 11 July 2017
Published: 29 August 2018
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2018, Vol. 28 
