摘要
分别采用纳秒激光、毫秒激光、磨料水射流、线切割及金刚石线锯等方法对熔融渗硅工艺制备的SiC/SiC复合材料进行切割,比较了不同方法的切割效率、表面粗糙度、加工锥度及切割面的形貌特征。研究结果表明,毫秒激光加工效率最高,可达121.2 mm/min;纳秒激光切割时激光入口处与出口处存在明显不同的形貌;磨料水射流加工切割锥角最大,为10.6°;线切割表面存在12μm左右的热影响区;金刚石线锯切割的表面粗糙度最小,Ra为0.32μm。
In this paper,the SiC/SiC composites prepared by melt infiltration process were cut by nanosecond laser,millisecond laser,abrasive water jet,Wire cut electrical discharge machining(WEDM)and diamond wire saw respectively.The cutting efficiency,surface roughness,machining taper and shape characteristics of cutting surface of different methods were compared.The results show that the millisecond laser processing efficiency is the highest,up to 121.2 mm/min.There are obviously different morphologies at the entrance and exit of nanosecond laser cutting.The cutting cone angle of abrasive water jet machining is 10.6°.There is a heat affected zone of about 12μm on the WEDM surface.The surface roughness cut by diamond wire saw is the smallest,and the Ra is 0.32μm.
作者
焦健
杨金华
侯金涛
刘虎
艾莹珺
周怡然
JIAO Jian;YANG Jinhua;HOU Jintao;LIU Hu;AI Yingjun;ZHOU Yiran(Key Laboratory of Advanced Composites,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Aerospace materials testing and Research Center,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2023年第6期57-67,共11页
China Ceramics
关键词
SIC/SIC复合材料
激光加工
磨料水射流
线切割
金刚石线锯
SiC/SiC composites
Laser processing
Abrasive water jet
Wire cut electrical discharge machining
Diamond wire saw
