有关预先热处理对氮化层性能之影响的文献资料是互相矛盾的。根据A.A.波波夫的资料表明,原始状态心部的硬度和组织会影响氮化层的性能。氮化过程中硬度的增加同该硬度的绝对值完全一样应当与氮化前钢中碳化物的弥散度和分布有关。根据文献[1],氮化层的深度和硬度实际上与预先热处理的类型无关。文献[2.3]则认为:含Cr,V, The literature on the effect of pre-heat treatment on the properties of nitride layers is contradictory. According to A. A. Popov’s data, the hardness and microstructure of the virgin heart affect the performance of the nitride layer. The increase in hardness during nitriding, exactly the same as the absolute value of the hardness, should be related to the dispersion and distribution of carbides in the steel before nitriding. According to the literature [1], the depth and hardness of the nitride layer are virtually independent of the type of pre-heat treatment. Literature [2.3] that: containing Cr, V,