The results show that the carburized case uniformity can be ensured through sand blasting or phosphating before carburizing, and NH3 is filled during carburizing.
结果表明：零件渗碳前经吹砂或磷化，渗碳时通入NH3，能够保证渗碳层均匀。
Hardening: Case hardening process whereby the carburized outer surface is made hard and strong while the center (core) is made tough and flexible.
淬火：是使渗碳的表面变硬，芯部变得有柔韧性的表面硬化工艺。
The requirement for retained austenite content in the carburized or carbonitrided case will vary with the type of product.
不同产品对残余奥氏体量的要求量是不同的，可采用相应的热处理工艺进行控制。
The requirement for retained austenite content in the carburized or carbonitrided case will vary with the type of product.
不同产品对残余奥氏体量的要求量是不同的，可采用相应的热处理工艺进行控制。
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