工件材料特性对SiCp／Al复合材料高速铣削加工性的影响  

The Effect of Workpiece Characteristics on the High-speed Milling Machinability of SiC_p/Al Composites

作　　者：葛英飞[1,2] 徐九华[1] 张帅[1] 傅玉灿[1] 边卫亮[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]南京工程学院机械制造及其自动化江苏省重点建设学科,南京211167

出　　处：《机械科学与技术》2013年第9期1281-1286,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51275227);国家高技术发展研究计划(863)项目(2009AA04Z116)资助

摘　　要：使用聚晶金刚石刀具(PCD),在切削速度为1 200 m/min下,研究了增强颗粒体分比与尺寸、热处理状态和冷却方式等对SiC p/2009Al复合材料高速铣削加工性的影响。结果表明:减小体分比或使用冷却液有助于明显改善SiC p/2009Al复合材料高速铣削加工性。材料经热处理后,加工表面质量明显提高,但切削力显著增大、刀具耐用度明显降低、切屑锯齿形更加明显。体分比一定时,在一定程度范围内增大增强颗粒尺寸有助于降低切削力和切削温度、延长刀具耐用度,但加工表面质量有所下降。The effects of reinforcement＇s volume fraction and size, on the high-speed machinability were investigated when milling SiC heat-treatment condition and cooling condition p/2009 A1 composites at the cutting speed of 1 200 m/min using PCD tools. The results show that decreasing the volume fraction or using coolant will improve the high-speed milling machinability. When cutting the heat-treated composites, the machined surface is improved sig- nificantly but the increasing of cutting forces, decreasing of tool life and the tendency of producing saw-toothed chip are also evident. Keeping the volume fraction unchanged and increasing the average size of reinforcement will re- duce the cutting forces and cutting temperature and prolong the tool life, but the machined surface quality will be decreased simultaneously.

关 键 词：SICP A1复合材料 高速铣削 PCD刀具 加工性 

分 类 号：TG506.7[金属学及工艺—金属切削加工及机床]