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低碳合金钢经渗碳、碳氮共渗后进行直接淬火(简称直淬)或者重新加热淬火(简称重淬)。对此两种淬火工艺,目前国内外研究报导以及在生产中运用的看法还不一致。重淬性能优于直淬已有人作了不少的研究。资料介绍8620钢经渗碳直接淬火,渗层中出现大量的马氏体显微裂纹,经重淬马氏体显微裂纹显著减少。由于重淬可以有效地消除马氏体显微裂纹的不利影响,使
Low-carbon alloy steel after carburizing, carbonitriding after direct quenching (referred to as direct quenching) or re-heating quenching (referred to as heavy quenching). The two quenching process, the current domestic and foreign research reports and the use of production is not the same view. Quenching performance is better than straight quench Some people have made a lot of research. Data introduction 8620 steel is directly quenched by carburizing, a large number of martensitic micro-cracks appear in the infiltrated layer, and the micro-cracks of the quenched martensitic steel are remarkably reduced. As the heavy quenching can effectively eliminate the adverse effects of martensitic micro-cracks,