The experimental results show that the surface hardened layer consists of non-full transformation area which is adjacent to the base metal and surface full transformation area.
实验结果表明，合金铸铁光束表面相变硬化层由与基材相邻的不完全相变区及表面完全相变区组成。
The depths and its uniformity of the surface hardened layer, its microhardness and wear resistance are further improved under two-passes grinding.
双程磨削淬硬可使表面硬化层深度及其均匀性、显微硬度及耐磨性得到进一步提高；
Compared with the dry-grinding, the surface compress residual stresses of the hardened layer under wet-grinding is increased, but its depth of hardened layer reduces about 30%.
与干磨相比，湿磨硬化层表面残余压应力有所提高，但其硬化层深度减少了约30%。
In addition, the fatigue life decreases after nitrocarburizing, are because the surface hardened layer leads to the plastic behavior loss of a whole material.
另外，共渗处理疲劳寿命的降低是表面强化层造成整体材料的塑性损失的结果。
The results show that, by the scanning method, we may obtain well-distributed hardness and approximately ideal distribution of hardened layer on gear surface.
采用该工艺，可得到均匀的齿面硬度和较为理想的齿面硬化层分布状态。
The depth of hardened layer after surface quenching was about 0.
磨 辊 齿经等离子弧表面淬火后硬化层的厚度约为0。
The surface hardening of 40cr steel was performed on a surface grinder by transverse feed grinding; the changing trends of microstructure and wear behavior of surface hardened layer were researched.
在平面磨床上对非淬硬钢进行了磨削硬化处理，研究了磨削方式和冷却条件对表面硬化层的影响。
Through the test of macroscopic performance of the hardened plaster surface which have different fineness, summing up the regularity that the fineness influence surface layer of plaster.
通过对不同细度面层石膏的硬化体宏观性能的测试，总结出细度对面层石膏性能的影响规律。
The superficial hardening of non-quenched steels had been carried out on a surface grinder, the influences of grinding mode and cooling conditions on the surface hardened layer were studied.
目的：测定涂布超硬石膏表面硬化剂有机硅树脂前后石膏模型的表面硬度和抗磨损性能，为该石膏表面硬化剂的临床应用提供依据。
The grind-hardening for two kinds of widely used middle carbon steels were carried out on a surface grinder by creep feed dry grinding, and the characteristics of the hardened layer were studied.
通过对陶瓷刀具材料磨削机理的分析，探讨了影响陶瓷刀具材料磨削的各种工艺因素，并在此基础上提出采用缓进给成形磨削陶瓷刀具材料的工艺方法。
The grind-hardening for two kinds of widely used middle carbon steels were carried out on a surface grinder by creep feed dry grinding, and the characteristics of the hardened layer were studied.
通过对陶瓷刀具材料磨削机理的分析，探讨了影响陶瓷刀具材料磨削的各种工艺因素，并在此基础上提出采用缓进给成形磨削陶瓷刀具材料的工艺方法。
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