在模具制造中,渗氮工艺已逐步被广泛地使用,因其有表面硬度高、变形小、抗磨耐蚀及热稳定性好等优点。 渗氮一般可分为等温渗氮、二段渗氮和三段渗氮。我们在分析这三种类型的氮化工艺中,发现二段氮化法比一般氮化法的渗氮速度快,其原因是氮化初期未形成一定渗层时,界面吸收是氮化过程的控制环节,在一段 In the mold manufacturing, nitriding process has been gradually widely used, because of its high surface hardness, small deformation, abrasion and corrosion resistance and good thermal stability and so on. Nitriding can be divided into isothermal nitriding, nitriding and nitrophosphates. In analyzing these three types of nitriding process, we found that the nitriding speed of the two-stage nitriding method is faster than that of the general nitriding method because the interface absorption is the nitriding process when a certain nitriding stage is not formed in the initial stage of nitriding Control, in a period