Super wear-resistant steel with hardness not smaller than 400 HBW and production method

A wear-resistant steel, super technology, applied in the field of super wear-resistant steel and production, can solve the problems of high production cost, low elongation, unobvious economic benefits, etc., achieve the effect of optimizing production process and reducing production cost

Active Publication Date: 2016-09-14
武汉钢铁有限公司
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Problems solved by technology

[0006] The Chinese patent publication number is CN102605272A, which discloses "a low-alloy ultra-high-strength wear-resistant steel and its production method", which not only adds rare earth elements to the steel, but also has a low elongation, that is, the maximum value is only 11 %
Only under the condition of load

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  • Super wear-resistant steel with hardness not smaller than 400 HBW and production method
  • Super wear-resistant steel with hardness not smaller than 400 HBW and production method
  • Super wear-resistant steel with hardness not smaller than 400 HBW and production method

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Embodiment Construction

[0037] The present invention is described in detail below:

[0038] Table 1 is the value list of each embodiment of the present invention and comparative example;

[0039] Table 2 is the main process parameter list of each embodiment of the present invention and comparative example;

[0040] Table 3 is a list of the performance tests of the various embodiments of the present invention and comparative examples.

[0041] Each embodiment of the present invention is produced according to the following production process:

[0042] 1) After conventional smelting and pouring into a billet, the billet is heated, and the heating temperature is controlled at 1320 ° C ~ 1380 ° C;

[0043] 2) Perform double-pass high-pressure descaling until the surface is clean;

[0044] 3) Perform hot rolling and adopt sheet rolling; where:

[0045]When performing rough rolling, control the starting temperature of rough rolling at 1050°C~1100°C, the reduction in the first two passes is 30~40%, and e...

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Abstract

Super wear-resistant steel with hardness not smaller than 400 HBW is prepared from, by weight percent, 0.10%-1.00% of C, 1.5%-3.5% of Si, 0.2%-0.8% of Mn, 0.20%-0.35% of Ti and 3.0%-8.0% of Cr. According to the production steps, a casting blank is heated after being formed through conventional smelting and pouring; double-pass high-pressure descaling is conducted till the surface is clean; hot rolling is conducted, and single-piece rolling is adopted; two-segment type cooling is adopted; and pit cooling is conducted till the room temperature. According to the super wear-resistant steel, by obtaining the metallographic structure of tempered martensite and ferrite, the brinell hardness can be larger than 400 HBW; and the corrosion rate does not exceed 0.04 mm/a under seawater soaking.

Description

technical field [0001] The invention relates to a wear-resistant steel and a production method thereof, in particular to a super wear-resistant steel with a hardness ≥ 400HBW and a production method thereof. Background technique [0002] At present, some structural parts in non-road mining machinery and construction machinery require steel plates to have excellent wear resistance due to long-term harsh working environments. Therefore, it is imperative to study a super wear-resistant material with a hardness ≥ 400HBW. [0003] In addition to low alloys, the wear-resistant materials currently used in China mainly include high manganese steel and low alloy cast iron. These two types of materials generally have unsatisfactory corrosion resistance. The as-cast structure of high manganese steel is usually composed of austenite, carbide and pearlite, and the precipitates are coarse, and water toughening treatment cannot be completely eliminated, which is not conducive to the improv...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/18C22C38/04C22C38/14C21D8/02
CPCC21D6/002C21D6/008C21D8/0226C21D8/0263C21D2211/005C21D2211/008C22C38/02C22C38/04C22C38/14C22C38/18
Inventor 马玉喜郭斌杜明王涛薛欢周荣蒋业华李祖来董翰贾淑君刘静段小林练容彪
Owner 武汉钢铁有限公司
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