1.前言末端淬火法是各国H钢标准规定测试淬透性的通用方法。随着H钢在国内推广采用,这种方法的试验条件及检测技术受到关注。对于测试面磨削深度与硬度测定值的关系认识不一致,有的认为,从表面到轴心的硬度有明显的递降趋势,但缺乏可靠的试验数据 1. Introduction The end quenching method is a universal method for testing hardenability of H steel standards in various countries. With the H steel in the country to promote the use of this method of testing conditions and testing techniques are of concern. For the test surface grinding depth and hardness measured values ​​of the understanding of inconsistencies, and some think that from the surface to the axis of the hardness there is a clear downward trend, but the lack of reliable test data