400HB-grade wear-resistant steel and method for manufacturing same

A wear-resistant steel plate and a manufacturing method technology, applied in the field of wear-resistant steel, can solve the problems that limit the wide application of wear-resistant steel and are not suitable for welding, and achieve the effects of reasonable composition and process design, high strength, and stable industrial production.

Inactive Publication Date: 2012-07-25
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, there are introductions about wear-resistant steels, such as CN1132264A, CN1189542A, CN1385549A, CN1865481A and CN1132263A, all of which are high-silicon and high-manganese composition systems, and contain more alloy elements, which are not suitable for welding, which limits the wear resistance. Wide application of grinding steel in industry

Method used

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  • 400HB-grade wear-resistant steel and method for manufacturing same
  • 400HB-grade wear-resistant steel and method for manufacturing same
  • 400HB-grade wear-resistant steel and method for manufacturing same

Examples

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Embodiment 1

[0036] The chemical composition of the 400HB wear-resistant steel plate of the present invention is shown in Table 1. After smelting according to the chemical composition shown in Table 1, heat the continuous casting slab or steel ingot to 1250°C, air cool after rolling, quenching temperature is 915°C, holding time is 5min, tempering temperature is 180°C, holding time is 15min, tempering After stacking or cooling bed cooling.

Embodiment 2

[0038] The embodiment is the same as that in Example 1, wherein the continuous casting slab or steel ingot is heated at 1200°C, quenched at 900°C, held for 11 minutes, tempered at 220°C, held for 10 minutes, stacked or cooled in bed after tempering cool down.

Embodiment 3

[0040] The embodiment is the same as that in Example 1, wherein the continuous casting slab or steel ingot is heated at 1140°C, quenched at 880°C, held for 28 minutes, tempered at 270°C, held for 46 minutes, stacked or cooled in bed after tempering cool down.

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Abstract

The invention provides a wear-resistant steel which comprises the following chemical components by weight percent (wt%): 0.08-0.24% of C, 0.10-0.30% of Si, 0.70-1.70% of Mn, 0.050% of P or less, 0.030% of S or less, 1.00% of Cr or less, 0.60% of Mo or less, 0.01-0.10% of Al, 0.0005-0.0040% of B, 0.005-0.06% of Ti and the balance of Fe and inevitable impurities, wherein the total weight percent of the Cr and the Mo is more than or equal to 0.15% and less than or equal to 1.20%, and the total weight percent of the Al and the Ti is more than or equal to 0.011% and less than or equal to 0.15%. A method for manufacturing the wear-resistant steel comprises the steps of smelting, casting, rolling, quenching and tempering. The 400HB-grade wear-resistant steel which is obtained by adopting the components and the process has high strength, good toughness and excellent machining performance, is easy to weld and bend and is suitable for the easily-worn equipment such as the bucket, the scraper conveyor and the mining electric-wheel dumper carriage of the engineering machinery.

Description

technical field [0001] The invention relates to wear-resistant steel, in particular to a 400HB wear-resistant steel plate and a manufacturing method thereof. Background technique [0002] Wear-resistant steel plates are widely used in mechanical products such as engineering, mining, construction, agriculture, cement production, ports, electric power and metallurgy that require high strength and high wear resistance due to extremely harsh working conditions. Such as bulldozers, loaders, excavators, dump trucks and grabs, stackers and reclaimers, feeding bending structures, etc. [0003] The wear resistance of a material mainly depends on its hardness, and the toughness also has a very important influence on the wear resistance of the material. Simply increasing the hardness of the material cannot guarantee that the material has better wear resistance and longer service life under complex working conditions. By adjusting the composition and heat treatment process, the reason...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/32C22C33/04C21D8/02
Inventor 李红斌姚连登施青
Owner BAOSHAN IRON & STEEL CO LTD
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