一、前言淬火和回火过程中所发生的变形是热处理工作者最困难的问题之一。许多热处理工作者为减少零件在热处理过程中的变形作了大量的工作,对变形的原因、变形的规律以及减小变形的方法等作了深入的研究,并进行了科学的总结。但是由于问题的复杂性,直到现在,我们还只能依靠实验数据来估计工模具钢和结构钢在淬火回火时所产生的变形。我们通过实践得知,每种钢的变形都有其特有的变化规律。由于Cr12MoV钢是冷变形模具最常用的 I. INTRODUCTION The deformation that occurs during quenching and tempering is one of the most difficult problems for heat-treating workers. Many heat treatment workers have done a lot of work to reduce the deformation of parts in the heat treatment process, and have made in-depth studies on the causes of deformation, the law of deformation and the methods of reducing deformation, and have made scientific summary. However, due to the complexity of the problem, until now, we can only rely on experimental data to estimate the deformation of tool steel and structural steel during quenching and tempering. We know through practice that each type of steel has its own unique variation. As Cr12MoV steel is the most commonly used cold deformation mold