对于变形和裂纹的问题,要立足于以预防为主,尽可能在热处理过程予以有效地控制和防止。但是,由于问题的复杂性,淬火时出现工件变形超差或裂纹的情况仍是难免的。为此,我们必须采取挽救措施,力求使变形超差的工件恢复到原来的形状或具有足够的加工余量,使已开裂的某些工件能恢复使用。这一讲我们就来谈谈校正变形和补救裂纹的一些基本原理和具体方法。一、淬火变形的校正根据校正淬火变形的原理和某本方法,可分为以下几个方面,即加压校 For the deformation and crack problems, we must base ourselves on prevention, as far as possible in the heat treatment process to be effectively controlled and prevented. However, due to the complexity of the problem, it is still inevitable that the workpiece will be deformed excessively or cracked during quenching. To this end, we must take remedial measures to strive to make the deformation of ultra-poor workpieces back to their original shape or with sufficient allowance, so that some of the pieces have been cracked to resume use. Here we talk about some of the basic principles and specific methods to correct deformation and remedy cracks. First, the quenching deformation correction According to the principle of quenching deformation and correction of a certain method can be divided into the following areas, namely, pressure school