High performance b4003m stainless steel manufacturing method for trucks

Abstract

The invention relates to stainless steel for a high-performance B4003M truck. The stainless steel comprises the following components in percentage by mass: 0.010 to 0.015 percent of C, 0.20 to 0.60 percent of Si, 0.80 to 2.5 percent of Mn, 11.0 to 13.0 percent of Cr, less than or equal to 0.040 percent of P, less than or equal to 0.010 percent of S, 0.60 to 1.5 percent of Ni, less than or equal to 0.020 percent of N, less than or equal to 0.20 percent of Cu, less than or equal to 0.0050 percent of O, 0.10 to 0.30 percent of Ti, less than or equal to 0.030 percent of C and N, and the balance of Fe and inevitable impurities. The yield strength of the stainless steel reaches over 350MPa, and the elongation reaches over 25 percent. In the length of the whole strip steel, the performance of the strip steel is very uniform; and the yield of the finished strip steel is improved.

Description

technical field [0001] The invention relates to stainless steel strip rolling technology, in particular to ferritic stainless steel hot rolling production and stainless steel heat treatment technology. Background technique [0002] In general, the yield strength of ferritic stainless steel strip is low, which is 260-290MPa. In order to manufacture stainless steel for trucks, those skilled in the art often increase the strength of the steel by increasing the content of elements such as Mn and Cr in the steel. For example, the application with the publication number CN101410543 discloses a stainless steel plate for structural members with excellent shock absorption properties. The contents of Cr, Ni, Mn and Cu are all high. The performance is reduced and cannot meet the needs of deformation processing. [0003] In order to improve the weldability of steel, those skilled in the art often adopt the method of adding alloy elements. For example, the patent whose publication num...

AI Technical Summary

Problems solved by technology

After hot rolling, this ferritic stainless steel strip needs to be further cold rolled to a thin gauge before it can be used to manufacture railway wagons, which makes the manufacturing process relatively complicated and increases the manufacturing cost

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