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一、前言众所周知,渗碳、氮碳共渗是以耐磨性为目的的热处理,而水蒸气氧化是以耐腐性、润滑性为目的的热处理。为了满足钢铁零件使用时强度、耐磨性,外观、尺寸精度、表面粗糙度等综合要求,对零件进行了复合处理。为降低制造成本,积极考虑简化制造过程及综合复合处理。新的复合表面热处理(下称新的表面热处理)是把气体氮碳共渗和Fe_3O_4被膜结合起来,在一个工序内得到复合效果的处理法。二、技术的目的和特微 1.渗氮层厚度过去的氮碳共渗,是在低于590℃的温度下处理的。此外,在长时间处理、渗氮层增
First, the preamble As we all know, carburizing, nitrocarburizing wear resistance is based on the heat treatment, and steam oxidation is corrosion resistance, lubricity for the purpose of heat treatment. In order to meet the steel parts when the use of strength, wear resistance, appearance, dimensional accuracy, surface roughness and other integrated requirements of the parts were complex treatment. In order to reduce manufacturing costs, active consideration to simplify the manufacturing process and composite processing. The new composite surface heat treatment (hereinafter referred to as the new surface heat treatment) is the gas nitrocarburizing and Fe_3O_4 film combination, in one process to get compound effect treatment. Second, the technical purpose and special micro-nitriding layer thickness past the nitrocarburizing, is below 590 ℃ temperature treatment. In addition, nitriding is increased in long time processing