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Ultrahigh-hardness ultrahigh-strength special steel and production method thereof

A technology of ultra-high strength and hardness, which is applied in the field of ultra-high hardness and ultra-high-strength special steel and its production, and can solve the problems of high raw material cost and difficult machining

Inactive Publication Date: 2017-12-12
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of high cost of raw materials and difficulty in mechanical processing existing in the existing wear-resistant steel, and to provide a special steel with ultra-high hardness and ultra-high strength and its production method

Method used

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  • Ultrahigh-hardness ultrahigh-strength special steel and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0018] The ultra-high hardness and ultra-high strength special steel in this embodiment, wherein: the composition expression of the special steel is C a Si b mn c m d Fe e , wherein M is composed of the following alloying elements in weight percentage: Cr 30%, Mo / 20%, V 20%, Nb 10%, Cu 10% and Al 10%, a, b, c, d, e are weight percentages, And a+b+c+d+e=100%, where a=1.65%, b=1.5%, c=2.0%, d=5.0%.

[0019] A method for producing the above-mentioned ultra-high hardness and ultra-high strength special steel, which consists of the following steps:

[0020] 1) Raw steel scrap, ferromanganese, ferrochrome, ferromolybdenum, ferrovanadium, ferroniobium, copper, and aluminum are batched into 150kg according to the weight percentage of the special steel components, wherein the content of silicon is adjusted by rare earth ferrosilicon, and the content of carbon Adjusted by carburant;

[0021] 2) Place part of the scrap steel in the ingredients in step 1) in an intermediate frequenc...

Embodiment 2

[0027] The ultra-high hardness and ultra-high strength special steel in this embodiment, wherein: the composition expression of the special steel is C a Si b mn c m d Fe e , wherein M is composed of the following alloy elements in weight percentage: Cr35%, Ti25%, V20%, W10% and Al10%, a, b, c, d, e are weight percentages, and a+b+c+d+ e=100%, where a=1.8%, b=1.0%, c=1.5%, d=6.0%, and the rest is e.

[0028] A method for producing the above-mentioned ultra-high hardness and ultra-high strength special steel, which consists of the following steps:

[0029] 1) Mix scrap steel, ferromanganese, ferrochrome, ferrovanadium, ferrotungsten, titanium, and aluminum raw materials according to the weight percentage of the special steel components to 150kg, wherein the content of silicon is adjusted by rare earth ferrosilicon, and the content of carbon is adjusted by carburization dosage adjustment;

[0030] 2) Place part of the steel scrap in the batching in step 1) in an intermediat...

Embodiment 3

[0036] The ultra-high hardness and ultra-high strength special steel in this embodiment, wherein: the composition expression of the special steel is C a Si b mn c m d Fe e, where M is composed of the following alloy elements in weight percentage: Cr 30%, Mo 20%, V 20%, W10%, Ti 10%, Cu 5% and Al 5%, a, b, c, d, e are Percentage by weight, and a+b+c+d+e=100%, wherein a=1.95%, b=0.6%, c=0.6%, d=7.0%, and the rest is e.

[0037] A method for producing the above-mentioned ultra-high hardness and ultra-high strength special steel, which consists of the following steps:

[0038] 1) Scrap steel, ferromanganese, ferrochrome, ferromolybdenum, ferrovanadium, ferrotungsten, titanium, copper, and aluminum are batched into 150kg according to the weight percentage of the special steel components, wherein the content of silicon is adjusted by rare earth ferrosilicon, carbon The content is adjusted by carburant;

[0039] 2) Place part of the steel scrap in the batching in step 1) in an ...

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Abstract

The invention relates to ultrahigh-hardness ultrahigh-strength special steel and a production method thereof and belongs to the technical field of steel and iron smelting. By means of the ultrahigh-hardness ultrahigh-strength special steel and the production method thereof, the main technical problems that a raw material of existing wear-resistant steel is high in cost and machining is hard to carry out are solved. According to the adopted technical scheme, the expression of components of the ultrahigh-hardness ultrahigh-strength special steel is shown as CSiMn<c>M<d>Fe<e>, wherein M is composed of two or more kinds of alloy elements including Cu, Al, Ni, Nb, W, Bi, Ti, V, RE, Cr, Ca, Mg, Mo, Sb, B, Zn and Zr at any weight percentage; a, b, c, d and e are weight percentages; the sum of a, b, c, d and e is 100%. The ultrahigh-hardness ultrahigh-strength special steel has the advantages of ultrahigh hardness ultrahigh strength.

Description

technical field [0001] The invention relates to a special steel with ultra-high hardness and ultra-high strength and a production method thereof, belonging to the technical field of iron and steel smelting. Background technique [0002] Iron and steel materials are the most widely used structural and functional materials with the largest output. They have the characteristics of plasticity and recyclability. They are irreplaceable basic materials and important strategic materials for national economic construction. Abrasion is a major failure mode of steel materials during use. The consumption of iron and steel materials due to wear and tear is astonishing. The economic and material losses caused by the scrapping of mechanical equipment each year in my country account for 4% of the total economic output value of our country. Therefore, the development of new wear-resistant steel materials has important economic and social value. [0003] So far, through the improvement of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/16C22C38/08C22C38/06C22C38/12C22C38/14C22C38/60C22C38/18C22C38/20C22C38/22C22C38/24C22C38/26C22C38/28C22C38/32C22C38/34C22C38/36C22C38/38C22C38/40C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54C22C38/56C22C38/58C22C33/06C21D1/26C21D1/18
CPCC21D1/18C21D1/26C22C33/06C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16C22C38/18C22C38/20C22C38/22C22C38/24C22C38/26C22C38/28C22C38/32C22C38/34C22C38/36C22C38/38C22C38/40C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54C22C38/56C22C38/58C22C38/60
Inventor 闫志杰胡勇侯华
Owner ZHONGBEI UNIV
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