- 1.The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
dict.yoduao.com - 2.Typical materials include ductile iron castings or steel forgings. Most crankshafts require some form of heat treating including case hardening, nitriding and induction harden.
特殊的材料包括球墨铸铁和钢煅品,大部分机轴经过热处理,表面硬化、渗氮和感应淬火。
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