Ti (C, N)-based metal ceramic cutter material and preparation method thereof

Abstract

The invention provides a Ti (C, N)-based metal ceramic cutter material and a preparation method thereof. The cutter material comprises the following raw materials in percentage by mass: 20.5-55. 5 percent of Ti (C0.5, N0.5), 0-35.5 percent of (Ti39.8W46.9) C, 0-15 percent of WC, 0-12 percent of TiC, 10-11 percent of Mo2C, 5-7 percent of TaC, 0-1.5 percent of VC, 6-9 percent of Co, 6-9 percent of Ni and 0-1 percent of C. The preparation method comprises the steps of material mixing and wet milling, spray granulation, die forming and degreasing and sintering. The material provided by the invention has the beneficial effects that the bending strength, the hardness, the fracture toughness, the wear resistance and the like of Ti (C, N)-based metal ceramic are improved by adjusting the relationship between carbide and carbonitride, thereby effectively improving the cutting performance of a cutter.

Description

technical field [0001] The invention relates to the field of cermet materials, in particular to a Ti(C,N)-based cermet tool material and a preparation method thereof. Background technique [0002] The rapid development of modern mechanical processing technology has put forward higher and higher requirements for cutting tool materials. As a kind of high red hardness, corrosion resistance and excellent surface processing quality, the tool made of cermet can adapt to the low temperature of dry cutting. The cost of new cutting tools is getting more and more attention. However, due to the low toughness and poor plastic deformation resistance of cermet materials, the service life of cermet knives is relatively low. At present, the hard phase of cermet knives prepared from cermets mainly comes from metal carbides, nitrides, carbonitrides and solid solutions of transition metals of Group 4, Group 5 and Group 6 in the periodic table of elements, and The main metal element contained...

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Problems solved by technology

Chinese patent 201811453225.7 discloses Ti(C,N)-based cermets and their preparation methods and applications. The preparation methods include mixing, compacting, degumming and sintering. The hardness of the Ti(C,N)-based cermets prepared in the examples Higher, but the fracture toughness and flexural strength need to be further improved

Chinese patent 201410082829.0 discloses a 3 Ti(C,N)-based cermet with Al and Ni as binders and its preparation method, the preparation method mainly includes the steps of ball milling, molding deformation, vacuum degreasing and vacuum sintering, the Ti(C,N) prepared in the examples N)-based cermets have high fracture toughness, but the flexural strength needs to be further improved

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