case-hardening

基本解释

Through analysis and tests, the authors selected corrosion resistant nitrogen case-hardening process to replace chrome plating.
通过分析和试验，我们采用了抗蚀渗氮取代电镀铬工艺。
Analytical results show that the transformation is effective except for a special- limit case of power hardening media-the ideal plastic materials.
分析结果表明：除幂硬化材料的极限情况——理想塑性外，此变换有效。
The lower heat-treating temperature of the case results from the fact that hypereutectoid steels are normally austenitized for hardening just above the lower critical point.
由于恰好高于低临界温度通常使过共析钢奥氏体化而硬化，所以对外层采用较低的热处理温度。