Stainless steel with high content of chromium and middle content of carbon and preparing method thereof

A technology of carbon stainless steel and high chromium, applied in the field of alloy steel, can solve the problems of high cost, difficult processing, brittleness and imperfect corrosion resistance, etc., and achieve the goal of reducing brittleness, improving corrosion resistance and good wear resistance Effect

Active Publication Date: 2007-09-12
大连环新新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the stainless steel materials used for automobile piston rings, miniature shafts and stainless steel bearings are chromium-containing alloy steels. The chromium content in them is adjusted to meet different application needs, and the carbon content in them has always been relatively high, generally above 0.9%. The brittleness and corrosion resistance are not perfect, and the processing is difficult and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] High-chromium medium-carbon stainless steel alloy, the product contains the following chemical composition (smelting analysis) in weight percentage, and is made by EAF+LF refining method:

[0016] Carbon 0.45 Silicon 0.8 Manganese 0.6 Phosphorus 0.02

[0017] Sulfur 0.02 Chromium 18 Molybdenum 1.0 Vanadium 0.5.

Embodiment 2

[0019] High-chromium medium-carbon stainless steel alloy, the product contains the following chemical composition (smelting analysis) in weight percentage, and is made by EAF+LF refining method:

[0020] Carbon 0.58 Silicon 0.50 Manganese 0.28 Phosphorus 0.01

[0021] Sulfur 0.01 Chromium 16 Molybdenum 0.2 Vanadium 0.3.

Embodiment 3

[0023] High-chromium medium-carbon stainless steel alloy, the product contains the following chemical composition (smelting analysis) in weight percentage, and is made by EAF+LF refining method:

[0024] Carbon 0.8 Silicon 0.4 Manganese 0.4 Phosphorus 0.03

[0025] Sulfur 0.02 Chromium 17 Molybdenum 0.4 Vanadium 0.4.

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Abstract

This invention relates to an alloyed material of high Cr mid-carbon stainless steel including the following chemical components in weight percentages: C 0.45-0.9, Si smaller than or equal to 1.0, Mn smaller than or equal to 0.6, P smaller than or equal to 0.03, S smaller than or equal to 0.03, Cr 16-18, Mo smaller than or equal to 1.2 and V smaller than or equal to 0.6, which reduces C and increases the content of metal so as to reduce brittleness of alloys and increase the performance of anti-corrosion, keep bright for long and meets requirement of hardness of alloyed steel.

Description

Technical field: [0001] The present invention relates to alloy materials, especially alloy steel, and also relates to its preparation method. Background technique: [0002] At present, most of the stainless steel materials used for automobile piston rings, miniature shafts and stainless steel bearings are chromium-containing alloy steels. The chromium content in them is adjusted to meet different application needs, and the carbon content in them has always been relatively high, generally above 0.9%. The brittleness and corrosion resistance are not perfect, and the processing is difficult and the cost is high. Invention content: [0003] The purpose of the present invention is to overcome the above disadvantages and provide a high-chromium medium-carbon stainless steel with reasonable alloy formula, excellent performance and low cost. In addition, its preparation method is also provided, which is simple and easy to operate. [0004] The technical scheme that the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/22C22C38/24F16J9/00F16C3/02F16C33/00
Inventor 李向辉
Owner 大连环新新材料科技有限公司
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