碳氮共渗工艺因素对渗层组织的影响是一个多因素共同作用的问题,其复杂性难以用单因素试验法定量地进行描述。本文采用二次回归正交设计法进行了方案设计,对试验数据进行了数据处理,并建立了共渗温度、煤油滴量及通氨量对渗层表面含碳量、表面含氮量、碳分布浓度梯度、氮分布浓度梯度、层深、残余奥氏体级别、碳化物级别、马氏体级别等八个数学表达式,较准确地反映了它们之间的规律性。 The influence of carbonitriding process factors on the disseminated tissue is a multifactorial problem, whose complexity can not be quantitatively described by single factor test. In this paper, the quadratic regression orthogonal design method was used to design the data of the experimental data processing, and established the co-permeation temperature, the amount of kerosene and ammonia on the surface of the permeable layer of carbon content, surface nitrogen content, carbon Distribution of concentration gradient, concentration gradient of nitrogen distribution, depth, residual austenite grade, carbide grade, martensite grade eight mathematical expressions, more accurately reflect the regularity between them.