Research and Application of Production Technology of Martensitic Chilled Steel
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.
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