During the extra-heavy cutting process,high-temperature failure is one of the main breakage forms of a cemented carbide cutter. Firstly,the production process of a cutting heat was analyzed through theoretical analysis,cutting simulation and mathematical model,and the influence of cutting temperature on deformation resistance of the cemented carbide cutter was studied. Secondly,the measurement experiments of cutting temperature and hightemperature material hardness were carried out. The experimental results...