我们车间每月都有几十套铁芯模要淬火,其中凸凹模精度高,孔距尺寸要求严,常因淬火变形超差而报废,多年来,我们采取过很多措施,都不能有效地控制其变形,经过若干次试验、总结、分析,终于找到比较合理的工艺方案,对不同大小的铁芯凸凹模、热处理后的变形,都能控制在公差范围之内、保证了铁芯凸凹模热处理质量。 There are dozens of sets of core molds to be quenched every month in our workshop. Among them, the precision of punch and die, the strict requirements of hole size and size are often discarded due to excessive deformation caused by quenching. Over the years, we have taken many measures and can not effectively control Its deformation, after several tests, summarizes and analyzes, and finally found a more reasonable process plan, for different sizes of core punch and die, after the heat treatment of deformation, can be controlled within the tolerance range to ensure that the core punch and die heat treatment quality.