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A kind of low-carbon equivalent high-strength wear-resistant steel plate and its production method

A production method and technology for wear-resistant steel plates, which are applied in the direction of temperature control, process efficiency improvement, furnace type, etc., can solve the problems of rising prices and increasing the production cost of high-strength wear-resistant steel plates, saving man-hours, high impact toughness, The effect of high hardness

Inactive Publication Date: 2012-02-01
WUYANG IRON & STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, with the development of industry and social progress, the prices of non-ferrous metals have gradually increased, and the price of Ni has risen more significantly, which has increased by nearly 3 times compared with the price of previous years, thus increasing the price of high-strength wear-resistant steel plates. production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The high-strength wear-resistant steel plate of this embodiment has a thickness of 20mm, and it is prepared from the following components by weight percentage:

[0033] C 0.15%, Si 0.31%, Mn 1.34%, P 0.014%, S 0.002%, V 0.040%, Nb 0.030%, Al 0.030%, Cr 0.21%, Mo 0.22%, Ti 0.017%, B 0.0015 %, the balance is iron and unavoidable impurities. The carbon equivalent is 0.48%.

[0034] The production method of the high-strength wear-resistant steel plate of the present embodiment comprises the following steps:

[0035] 1) Smelting process: The molten steel containing the chemical components in the above weight percentages is first smelted in an electric furnace, sent to the LF refining furnace for refining, and fed with Al wires. The refining process ensures that the refining slag is white and the deoxidation effect is guaranteed. After the completion, vacuum degassing Furnace (VD furnace) vacuum treatment, add SiCa block before vacuum, the vacuum degree is not more than 0.5...

Embodiment 2

[0043] The high-strength wear-resistant steel plate of this embodiment has a thickness of 60mm, and it is prepared from the following components by weight percentage:

[0044] C 0.17%, Si 0.20%, Mn 1.30%, P 0.010%, S 0.003%, V 0.046%, Nb 0.025%, Al 0.040%, Cr 0.15%, Mo 0.18%, Ti 0.022%, B 0.0020 %, the balance is iron and unavoidable impurities. The carbon equivalent is 0.49%.

[0045] The production method of the high-strength wear-resistant steel plate of the present embodiment comprises the following steps:

[0046] 1) Smelting process: The molten steel containing the above-mentioned chemical components in various weight percentages is first smelted in an electric furnace, sent to an LF refining furnace for refining, and fed with Al wires; the refining process ensures that the refining slag is white and the deoxidation effect is guaranteed. After the completion of the vacuum degassing furnace (VD furnace) vacuum treatment, add SiCa block before vacuum, the vacuum degree i...

Embodiment 3

[0054] The high-strength wear-resistant steel plate of this embodiment has a thickness of 40mm, and it is prepared from the following components by weight percentage:

[0055] C 0.18%, Si 0.40%, Mn 1.40%, P 0.009%, S 0.003%, V 0.050%, Nb 0.017%, Al 0.020%, Cr 0.25%, Mo 0.28%, Ti 0.026%, B 0.0030 %, the balance is iron and unavoidable impurities. The carbon equivalent is 0.49%.

[0056] The production method of the high-strength wear-resistant steel plate of the present embodiment comprises the following steps:

[0057] 1) Smelting process: The molten steel containing the above-mentioned chemical components in various weight percentages is first smelted in an electric furnace, sent to an LF refining furnace for refining, and fed with Al wires; the refining process ensures that the refining slag is white and the deoxidation effect is guaranteed. Vacuum treatment in the vacuum degassing furnace (VD furnace) after completion, add SiCa blocks before vacuuming, the vacuum degree i...

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Abstract

The invention discloses a low-carbon-equivalent high-strength wear-resistant steel plate, which is prepared from the following components in percentage by weight: 0.15 to 0.18 percent of C, 0.20 to 0.40 percent of Si, 1.30 to 1.40 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.005 percent of S, 0.040 to 0.050 percent of V, 0.017 to 0.030 percent of Nb, 0.020 to 0.040 percent of Al, 0.15 to 0.25 percent of Cr, 0.18 to 0.28 percent of Mo, 0.017 to 0.026 percent of Ti, 0.0015 to 0.0030 percent of B, and the balance of Fe and inevitable impurities. The thickness of the steel plate is 8 to 60mm. The high-strength wear-resistant steel plate has the yield strength over 1,000MPa, the Brinell hardness between 380 and 430HBW, the carbon equivalent between 0.41 and 0.49 percent, the maximum tensile strength of 1,280MPa, good low temperature toughness, and the maximum thickness of 60mm.

Description

technical field [0001] The invention relates to a low-carbon equivalent high-strength wear-resistant steel plate, and also discloses a production method of the steel plate. Background technique [0002] With the rapid development of my country's economic construction, the market demand for high-strength wear-resistant steel plates is increasing. Especially coal mining machinery, engineering machinery, metallurgical machinery, road construction machinery and mining machinery industries, in order to reduce manufacturing costs, have chosen domestic castings and a small amount of steel plates. Due to the limited production capacity of domestic wear-resistant steel plates and the limited subsequent processing of casting materials, domestic wear-resistant steel cannot meet market demand. [0003] Chinese patent application number: 200710193026.2, discloses a high-strength wear-resistant steel plate, whose composition includes trace elements such as C, Si, Mn, Ni, V, Nb, B, Cr, Mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/32C21C5/52C21C7/04C21C7/10C21D1/25C21D8/02B22D11/20B21B37/74
CPCY02P10/20
Inventor 王新钱泽旺谢良法韦明赵文忠李建立张仪杰晏欣伟张西忠张亚丽张俊凯刘建磊白永强王晓刚张启远王祥
Owner WUYANG IRON & STEEL
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