Tool material use performance comparison method

Abstract

A tool material use performance comparison method includes the steps: (1) preparing different tool materials; (2) preparing tools according to the same manufacturing parameters and detecting the surface roughness of a main cutting edge; (3) preparing bulk materials from different tool materials, grinding surfaces according to the manufacturing parameters and detecting the surface roughness; (4) comparing the surface roughness and selecting subsequent steps according to comparison results; (5) cutting machined materials, measuring cutting temperature and cutting force and calculating indentation load values; (6) heating different bulk materials after surface grinding to reach cutting temperature, testing Vickers indentation hardness and selecting the materials with maximum numerical valuesas applicable tool materials. According to the method, the hardness of different tool materials in the machining process is tested and acquired, and applicability of different tool materials can be accurately judged.

Description

technical field [0001] The invention belongs to the technical field of cutting tools, and in particular relates to a method for comparing the service performance of cutting tool materials. Background technique [0002] There are many kinds of tool materials, among which cemented carbide, high-speed steel and other materials are the most common. Cemented carbide has high strength, hardness and fracture toughness, and is a reliable tool material. Therefore, cemented carbide tools are widely used in the field of cutting composite materials, titanium alloys, high-temperature alloys and other materials. [0003] Taking cemented carbide as an example, cemented carbide is mainly composed of carbide (WC, TiC) micron-sized powder of high hardness refractory metal, and cobalt (Co) or nickel (Ni), molybdenum (Mo) is used as a bond. Powder metallurgy products sintered in a vacuum furnace or a hydrogen reduction furnace; due to the content and composition of the binder, the type and par...

AI Technical Summary

Problems solved by technology

[0004] Usually, the test environment of cemented carbide is quite different from the environment in actual use, especially the ambient temperature is significantly different; during the use of cemented carbide tools, the cutting temperature can reach 700 ° C or even higher; in such a high cutting Under high temperature, the properties of cemented carbide may change greatly, so the material properties measured at room temperature may no longer be applicable