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
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.
2021, Vol. 31 
