一般在调质状态下使用，还可以进行碳氮共渗和高频表面淬火处理。
Generally used in quenched and tempered state, can also carry on the carbonitriding and high-frequency surface hardening.
可由一般为处理材料一直加工到淬火钢，适用范围广。
It has wide application rage from common material treatment to process hardened steel.
亦适合一般制钢时作淬火用。
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