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| Analysis of surface streaking on tungsten infiltrated copper gas rudder |
| ZHANG Baohong1，ZENG Qingxiang2，LIU Qing3，GUO Yingli1，LIN Bingtao1，
SUN Xiaoxia4 |
| 1Advanced Technology & Materials Co. Ltd, Beijing 100081, China;2Shanghai Electro-Mechanical
Engineering Institute, Shanghai 201109, China; 3General Design Institute of Hubei Aerospace Technology
Research Academy,Wuhan 430030, China; 4China University of Labor Relations, Beijing 100048, China |
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Abstract Taking tungsten infiltrated copper gas rudder (W-7Cu) as the research object, stripes with a width of 1~
2 mm appeared during the machining process were analyzed. The results show that the stripes on the machined surface
are a localized densified structure of tungsten skeleton produced by high- temperature sintering of tungsten.
Non-destructive testing methods can not detect the stripes, and the stripe are not internal defects that can be identified
by non-destructive testing.The presence of stripes has an effect on the local mechanical properties, but has little
effect on the overall performance, and the performance meets the technical requirements.
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Received: 01 July 2020
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2021, Vol. 31 
