低温冷冻状态下金属切削性能研究

Study of Metal Cutting Character in Frozen State

高韧性、高塑性金属材料,在低温冷冻状态下产生低温脆化,这有利于金属切削加工。冷冻源选用,电子堆半导体材料提供。低温状态下金属材料表现为机械性能提高,残余应力下降,粗糙度降低、刀具磨损减小。作为一门新技术,冷冻加工为某些特殊难加工金属材料开辟一条有效的切削途径。

High tenacity and high ductility metal material embrittled at a low easily. At a low temperature, the mechanical property improving , residual wear decreasing. As a new technology , freeze cutting has fond a effective metals and has application value for the machining of the special industry. temperature. This metal machines stress , roughness ＆ cutting tool cutting way for some intractable