The strength, toughness and surface hardness of medium Manganese austenitic steel have been increased greatly by casting surface alloying and complex modification.
通过铸造表面合金化和复合变质处理，使中锰奥氏体钢的强度、韧性和表面硬度显著提高。
2
Two new casting die steels were developed for press moulding of medium thickness steel plates.
对适合用作中厚板冷冲压模具的二种新研制的铸造模具钢作了介绍。
3
This article states a common working program of complicated lost foam product development systematically, through the medium of a typical model of lost foam casting production.