SINTERED TITANIUM-BASED CARBONITRIDE ALLOY CONTAINING Ti,Nb, W, C, N AND Co FOR USE IN FINISHING OPERATION, AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a sintered titanium-based carbonitride alloy containing Ti, Nb, W, C, N and Co for metal cutting application, particularly general finishing operation.;SOLUTION: The alloy contains Ti, Co, each impurity level of Ni and Fe, 4 to 7 atomic percent of Nb and 3 to 8 atomic percent of W and has a C/(N+C) ratio ranging from 0.50 to 0.75. The amount of a non-solid solution Ti(C, N) core should be kept between 26 and 37 vol.% of a hard phase, the balance being one or more complex carbonitrides containing Ti, Nb and W. The resultant alloy is useful for semifinishing of steel and cast iron.;COPYRIGHT: (C)2004,JPO