在充分研究了强碳化物形成元素对合金钢回火转变的影响机理和规律基础之上,利用计算机对强碳化物形成元素,回火温度(400℃～77℃)与钢间的关系进行了多元回归分析.所建立的多元回归方法具有很高的显著性(α=0.01),可依据合金元素的种类、含量及回火温度较精确地预测钢的硬度,并为合金成分的设计和回火工艺的制订提供了理论指导. On the basis of fully studying the influence mechanism and rule of the formation of carbide on the tempering transformation of the alloy steel, the relationship between the formation of the carbide and the tempering temperature (400 ℃ ~ 77 ℃) and the steel was studied by computer Multiple regression analysis The established multiple regression method is highly significant (α = 0.01). The hardness of the steel can be more accurately predicted according to the type and content of the alloying elements and the tempering temperature, Fire process formulation provides theoretical guidance.