本文叙述了通过两次冷处理和两次回火的方法来提高量块尺寸稳定性的试验结果。——编者对于淬火后要求具有高硬度(Rc 62—65),高耐磨性以及高尺寸稳定性的量块需进行特殊的热处理。因为采用普通的淬火和低温回火工艺不能满足尺寸稳定的要求。从表1可以看出,在开始的3～4个月内长度变化不大,以 This paper describes the results of tests to improve the dimensional stability of a gauge by two cold treatments and two tempering steps. - Editors require special heat treatment after quenching to require a gauge block with high hardness (Rc 62-65), high wear resistance and high dimensional stability. Because the use of ordinary quenching and low temperature tempering process can not meet the dimensional stability requirements. As can be seen from Table 1, in the first 3 to 4 months, the length of the change is small