为了解决传统方法在高体积分数SiCp/Al复合材料加工中效率不高、易产生表面缺陷的问题，提出了一种电弧铣削与铣磨组合的高效精密加工方法.实验结果显示，采用电弧铣削进行50%SiCp/Al复合材料的粗加工，材料去除率可达6300mm3/min，再铸层厚度可控制在100μm以内，对后续精加工不会产生不良影响；采用铣磨进行50%SiCp/Al复合材料的精密加工，可避免产生崩边等表面缺陷，表面粗糙度(Ra)可达0.8μm.针对红外位标器支架的产品加工实验，验证了该组合加工方法的高效性与可靠性.
To solve the problems of SiCp/Al composites processing, such as low efficiency and limited surface quality, a processing method was proposed by combined electrical-arc-milling and milling-grinding. The experimental results show that the obtained material remove rate was up to 6300mm3/min and the thickness of recast layer was below 100μm by the electrical-arc-milling to the rough machining of 50%SiCp/Al composites (volume fraction). On the other hand, when the milling-grinding was applied to the finishing of 50%SiCp/Al composites, the surface defects such as edge breakage can be avoided, and the surface roughness (Ra) was 0.8μm. The validity of the combined manufacture method was proved with the machining tests for the bracket IR seeker, which was made of 50%SiCp/Al composites.
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