论文部分内容阅读
ＧＨ761是我国自行研制的涡轮盘用新型高温合金 ,具有卓越的物理机械性能 ,但切削加工性较差。在ＧＨ761拉削加工中 ,拉刀磨损直接影响着表面质量。刀具的磨损通常用后刀面磨损值ＶＢ表示 ,在薄切屑低速拉削时 ,ＶＢ值变化极其缓慢。在试验中 ,60ｍｍ长的工件连续拉削 2 4 0ｓ(
GH761 is a new type of superalloy developed by our country for turbine disc, which has excellent physical and mechanical properties but poor machinability. In the GH761 broaching process, broaching wear directly affects the surface quality. Tool wear is usually expressed as a flank wear value, VB, which changes slowly at low chip speeds. In the test, 60mm long workpiece continuous broaching 240s (