A kind of high wear-resistant alloy material for cutting tool and preparation method thereof

Abstract

A high wear-resistant alloy material for cutting tools and a preparation method thereof. The raw material of the alloy material is composed of a base material, a grain refiner and a reinforcing agent, wherein the base material is composed of nano-titanium carbide, nano-titanium nitride, tungsten carbide, Niobium carbide, copper powder and cobalt powder, the grain refiner is composed of chromium carbide, zirconium boride, cerium oxide, molybdenum carbide and magnesium nitride, and the reinforcing agent is a mixture of nanocrystalline boehmite, manganese nitride and aluminum nitride made. The hardness of the alloy material prepared by the invention can reach up to HRA112.7, and the bending strength can reach up to 3017N / mm 2 , has good wear resistance, which can effectively prolong the life of the processed tool and improve the cutting efficiency of the tool.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a high wear-resistant alloy material for cutting tools and a preparation method thereof. Background technique [0002] As the direct executor of the cutting process, the tool inevitably suffers from wear and damage during the cutting process of the workpiece, especially in high-speed cutting, the tool wear is particularly serious. When cutting difficult materials at high speed, due to the high cutting temperature, the diffusion wear of the tool becomes one of the main wear mechanisms of the tool. [0003] The tool life after wear decreases sharply, the surface roughness of the workpiece increases, and the size of the workpiece often exceeds the design tolerance. Although timely tool change can solve the problem of insufficient precision of some workpieces, for the processing of difficult-to-machine materials such as aerospace and new molds, especially large or precision parts with...

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Problems solved by technology

However, at present, the improvement of the performance of cermets in my country is still not ideal, and the Rockwell hardness and bending strength of existing cermets still need to be further improved.