曾经有人指出,现在的机械零件中有一半以上本应在使用前进行消除应力处理,但实际上却并未这样做。不用加热的亚共振应力消除方法是当前除了常用的热处理方法之外又一种新的方法,它对难以入炉加热处理的零件尤其适用。 (一)消除应力的目的退火、正火、回火以及消除应力处理常常用来指同一件事,即消除应力。但是这里定义上存在着不确切性,正误并存。上述过程确实都能在某种程度上消除应力,但每一 It has been pointed out that more than half of the current mechanical parts should have been stress relieved before use, but they did not. The sub-resonant stress relief method without heating is another new method other than the usual heat treatment method, which is particularly applicable to the parts that are difficult to heat the furnace. (A) the purpose of stress relief Annealing, normalizing, tempering and stress relief treatment is often used to refer to the same thing, that is, to eliminate stress. However, there is an uncertainty in the definition here, which is a mistake. The above process can indeed eliminate the stress to some extent, but each one