Chromium-tungsten-rare earth-boron series air cooling medium-high carbon bainite steel and preparation method thereof

A technology of carbon bainitic steel and bainitic steel, which is applied in the field of chromium-tungsten-rare earth-boron air-cooled medium-high carbon bainitic steel and its preparation, which can solve the complex, time-consuming and difficult-to-scale processing process Production and other issues, to achieve uniform dispersion, reduce production costs, and facilitate the promotion of the effect

Inactive Publication Date: 2009-12-16
谢新佑 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of steel processing technology is too complicated, and it takes 20 days before and after, which is too time-consuming, and it is difficult to form large-scale production

Method used

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Examples

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preparation example Construction

[0029] The preparation method of the above-mentioned chromium-tungsten-rare earth-boron air-cooled medium-high carbon bainite steel proposed by the present invention comprises the following steps:

[0030] (1) Smelting in an electric furnace according to conventional methods, the raw materials are scrap steel, ferrochrome, ferrosilicon, ferromolybdenum, ferrotungsten, ferrovanadium, electrolytic manganese, 99 nickel plate, rare earth, ferroboron, deoxidized aluminum wire;

[0031] (2) First heat and melt the scrap steel, after the furnace charge is completely melted, add electrode powder, electrolytic manganese, and ferrosilicon in turn for precipitation pre-deoxidation, then add ferrochromium, ferrotungsten, ferromolybdenum, ferrovanadium, and 99 nickel plates, and analyze and test C, Mn, Si content, heating up to 1550°C, adjust C, add electrolytic manganese and ferrosilicon, adjust Mn, Si content, increase slag coverage;

[0032] (3) After the temperature rises to 1670-1700°...

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Abstract

The invention relates to chromium-tungsten-rare earth-boron series air cooling medium-high carbon bainite steel and a preparation method thereof, and belongs to the technical field of alloy steel. The components in the bainite steel comprise C, Mn, Si, Cr, W, Mo, Ni, V, Re, B, Al, P, S and the balance of Fe, wherein P and S are less than 0.035. The bainite steel is normally melted by an electric furnace to raise temperature, then aluminum is added into the melted bainite steel, the heat is preserved, the steel is discharged, rare-earth and boron are added into the steel by using a ladle flushing method, and then the mixture is cast into a cast product conventionally By setting the category and content matching of alloying elements and micro-alloying elements, the number of carbides is increased, the dispersion distribution is even, the tissue is thinned, and the prepared bainite steel has high strong hardness, high toughness and high abrasion resistance; the preparation method shortens the thermal treatment time, reduces the production cost, protects the environment, and lessens the work intensity of workers; the using amount of expensive elements is little; and the product has low cost and is convenient for popularization.

Description

technical field [0001] The invention relates to a chromium-tungsten-rare earth-boron air-cooled medium-high carbon bainite steel and a preparation method thereof, belonging to the technical field of alloy steel. Background technique [0002] The wear-resistant steel needed in industry must have high hardness and certain toughness reserves in order to achieve long service life and receive the benefits of saving energy and resources. In order to achieve a reasonable combination of high hardness and high toughness, a large number of researches at home and abroad are carried out from the two aspects of rational selection of alloy elements and implementation of corresponding production processes. Especially in the past 20 years, a large number of outstanding achievements have been made, and a new type of bainite wear-resistant steel with superior comprehensive mechanical properties has been produced. U.S. Patent No. 6,884,306 discloses a high-carbon bainite wear-resistant steel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/38C22C33/06B22D1/00C21D1/18
Inventor 谢新佑李光良
Owner 谢新佑
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