笑盈盈 发表于 2012-3-6 10:46:42

What mean is "neutral hardening"?

Please tell me,what mean is neutral hardening.Thanks

magicmotor 发表于 2012-3-6 11:45:44

本帖最后由 magicmotor 于 2012-3-6 11:45 编辑

避免工件表面脱碳和增碳，并且使表面免于氧化的热处理硬化工艺
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