High performance b4003m stainless steel manufacturing method for trucks

A stainless steel, high-performance technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of complex manufacturing process and increased manufacturing cost, so as to improve the performance level of yield strength and elongation, improve the yield, The effect of changing technical bottlenecks

Active Publication Date: 2011-11-30
BAOSTEEL DESHENG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 use...

Method used

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  • High performance b4003m stainless steel manufacturing method for trucks

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Embodiment Construction

[0047] According to the chemical composition requirements of the steel grades of the present invention, steel material samples of different specifications are manufactured through smelting, continuous casting, hot rolling, annealing and pickling. Table 1 is the chemical composition of the steel of the embodiment, Table 2 is the control temperature of the process, and Table 3 is the mechanical properties of the steel of the embodiment after being kept at the temperature for 20 hours, according to the national standard GB / T 228-2002 metal material room temperature Measured by tensile test method.

[0048] The chemical composition (wt%) of the embodiment of table 1

[0049] Preface

No

C

Si

mn

P

S

Cr

Ni

N

Ti

1

0.010

1.00

2.50

0.040

0.010

11.0

0.60

0.020

0.10

2

0.011

0.80

...

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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...

Claims

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Application Information

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IPC IPC(8): C22C38/58C22C38/50C21D9/663B21B37/16
Inventor 叶晓宁刘竑
Owner BAOSTEEL DESHENG STAINLESS STEEL
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