马氏体冷硬态材料生产工艺的研究与应用

Research and Application of Production Technology of Martensitic Chilled Steel

为了解决马氏体热轧材料硬度低、表面粗糙度高以及厚度波动大的问题,以常见的20Cr13、30Cr13和40Cr13不锈钢带为研究对象,通过表面硬度及表面粗糙度测量、金相分析,拟合硬度与轧制变形率的关系,并在生产现场的二十辊森吉米尔轧机上进行测试与实践,开发出了马氏体冷硬态材料的生产工艺。马氏体冷硬态材料是将热轧材料在冷轧机上轧制一定的变形率后所得,工艺技术主要围绕材料的表面硬度、表面粗糙度和板形三方面进行设计。目前,太钢马氏体冷硬态钢带已实现批量生产、供货,质量稳定,市场占有率逐步提高。

In order to solve the problems of low hardness,high surface roughness and large thickness fluctuation of hot rolled materials,this paper takes the common 20Cr13,30Cr13 and 40Cr13 stainless steel strips as the research object,through the measurement of surface hardness and surface roughness,metallographic analysis,fitting the relationship between hardness and rolling deformation rate.The production process of martensite chilled material was developed by testing and practice on the 20-rolls sendzimir mill.Martensitic cold hardening material is made by rolling the hot rolled material in the cold-rolling mill by a certain deformation rate,and the process technology is mainly designed around the surface hardness,surface roughness and plate shape of the material.At present,TISCO martensitic chilled steel strip has achieved mass production and supply,stable quality,and gradually increased market share.