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发明背景发明范围: 本发明涉及到一种用含主要为氮气作为载气对铁制零件进行了气体氮化处理的改进方法。过去工艺简介通常用作机械结构零件的铁制构件需要良好的耐疲劳强度和耐磨损性能。为了满足上述要求,已知的方法是通过氮化,使零件表面形成一种由氮化物组成的硬层以达到其所需要的性能。其中常用的方法为气体氮化、盐浴氮化等等。但是上述方法有其缺点。气体渗氮法需要很长的处理时间,这是不希望的。同时,虽然形成了一种深的硬化层,硬度较高;但由
Background of the Invention: The present invention relates to an improved method of gas nitriding iron parts with a predominantly nitrogen gas as a carrier gas. Past Process Briefs Iron components commonly used as mechanical structural parts require good fatigue strength and wear resistance. In order to meet the above requirements, it is known to nitrize to form a hard layer composed of a nitride on the surface of a part to achieve the desired properties. One of the commonly used methods for gas nitriding, salt bath nitriding and so on. However, the above method has its drawbacks. Gas nitriding takes a long processing time, which is not desirable. At the same time, although a deep hardened layer is formed, the hardness is higher;