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HB400-grade wear-resisting steel plate and production method thereof

A technology of wear-resistant steel plate and manufacturing method, which is applied in the field of metallurgical wear-resistant steel plate, can solve problems such as poor welding performance, and achieve the effects of low raw material cost, reduced alloy content, high hardness and wear resistance

Active Publication Date: 2010-07-14
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding performance of the above patents is poor

Method used

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  • HB400-grade wear-resisting steel plate and production method thereof
  • HB400-grade wear-resisting steel plate and production method thereof
  • HB400-grade wear-resisting steel plate and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Smelt in electric furnace or converter according to the chemical composition shown in Table 2, and cast into continuous casting slab or steel ingot, heat the continuous casting slab or steel ingot to 1080°C, keep it warm for 180 minutes, start rolling at 1050°C, and the deformation rate of each pass 10-20%, the final rolling temperature is 750°C, and the thickness of the finished steel plate is 10mm. Cool in air after rolling. The quenching heating temperature is 909°C. The tempering temperature is 215°C. After tempering, stack or cool down in a cooling bed.

Embodiment 2

[0048] The implementation is the same as in Example 1, wherein the heating temperature is 1130°C, and the heat preservation is 150 minutes; the rolling start temperature is 1060°C, the pass deformation rate is 10-18%, the final rolling temperature is 850°C, and the thickness of the finished steel plate is 30mm; quenching and heating The temperature was 911°C. The tempering temperature is 210°C. After tempering, stack or cool down in a cooling bed.

Embodiment 3

[0050] The implementation is the same as in Example 1, wherein the heating temperature is 1180°C, and the heat preservation is 150 minutes; the rolling start temperature is 1150°C, the pass deformation rate is 10-30%, the final rolling temperature is 1020°C, and the thickness of the finished steel plate is 40mm; quenching and heating The temperature was 908°C. The tempering temperature is 221°C. After tempering, stack or cool down in a cooling bed.

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Abstract

The invention discloses an HB400-grade wear-resisting steel plate and a production method thereof. The steel plate comprises the following chemical components in percentage by weight: C 0.05-0.15wt%, Si 0.4-1.4wt%, Mn 0.5-2.0wt%, P <0.012wt%, S <0.003wt%, Mo 0-0.5%, Nb 0.01-0.08%, Cu 0.20-1.0%, Co 0-1.0%, B 0.0010-0.0025wt%, Al 0.02-0.04wt%, Ti 0.004-0.030wt%, and the balance of Fe and inevitable impurities, wherein the content of Mo and Nb needs to satisfy the condition that the Mo+Nb is not less than 0.023C+0.059Ti+1.71B and not more than 2.574C+0.62Mn+10.36Ti +2.11B. The invention reduces production cost by adding some cheap alloy elements; and when the value of carbon equivalent Ceq is not more than 0.45, the HB400-grade wear-resisting steel plate has good welding performance.

Description

technical field [0001] The invention relates to a metallurgical wear-resistant steel plate, in particular to a wear-resistant steel plate and a manufacturing process thereof. Background technique [0002] The transportation equipment of ore and industrial products, the easy-wear parts of transportation machinery and excavation machinery require wear-resistant steel plates with excellent performance. The wear resistance of a material mainly depends on its hardness. Higher hardness can provide good anti-wear properties. There are two commonly used methods to improve the friction and wear properties of alloy steel materials: strengthening by infiltrating trace elements on the surface, such as carburizing to form a carburized layer, improving surface hardness and wear resistance; adjusting the composition of alloy elements in alloy steel, increasing carbon content and add appropriate amount of trace elements such as Ni, Mo, V and Co, etc., to make full use of different strengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16C22C33/04C21D1/18C21D8/02
Inventor 姚连登赵小婷李红斌赵四新
Owner BAOSHAN IRON & STEEL CO LTD
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