Failure analysis of hard alloy cutter blades for cutting chemical fibers

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.