硬质合金化纤切断刀失效原因的试验分析

Failure analysis of hard alloy cutter blades for cutting chemical fibers

用台式投影仪、电子扫描显微镜、锋利度测定仪等实验仪器 ,对涤纶短纤维切断刀的失效原因进行了研究。结果表明 ,化纤生产中 ,纤维对硬质合金切断刀的磨损不是影响切断刀钝化的主要原因 ,刃口上产生的微缺口 ,导致了化纤切断刀的最终失效。

Studied the failure of hard alloy cutter blades with table projector, SEM and sharpness tester.The results show that the wear of cutting edge is tiny a nd generated a lot of small notches on the cutter edges during the production o f cut fibers.These notches reduced the sharpness of cutter blades serivously and resulted in failure of blades as contrasted with wear.