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Hardening and tempering high-strength steel plate for wood based panel equipment and production method of tempering high-strength steel plate

A technology of high-strength steel plate and production method, applied in the field of low-alloy high-strength structural steel manufacturing, can solve the problems of high price and long cycle, and achieve the effects of low cost, easy operation and fine structure

Inactive Publication Date: 2013-04-03
WUYANG IRON & STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Purchasing similar steel plates from abroad has a long cycle and high price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The composition of quenched and tempered high-strength steel in this embodiment is as follows: C 0.19%, Si 0.27%, Mn 1.03%, P 0.009%, S 0.002%, Mo 0.29%, Ni 0.23%, Cr 0.79% , Nb 0.020%, V 0.044%, B 0.0017%, Ti0.021%, and the balance is Fe and unavoidable impurities. Ceq is 0.60%, and the 300mm*1500 mm continuous casting slab is rolled into a 100mm*1500 mm steel plate.

[0020] The production method of the quenched and tempered high-strength steel plate of the present embodiment, the steps are as follows:

[0021] (1) Smelting: molten steel is smelted in an ultra-high-power electric arc furnace, and high-quality steel is selected. During the melting period, a large amount of slag is used to flow slag, and vacuum decarburization is used to make the C content 0.19%. Then it is sent to the LF refining furnace for refining. Deoxidation treatment, adjust the content of each component in molten steel so that the components meet the following weight percentages: Si 0.27%, Mn 1...

Embodiment 2

[0027] The composition of the quenched and tempered high-strength steel in this example is as follows: C 0.20%, Si 0.30%, Mn 0.95%, P 0.008%, S 0.003%, Mo 0.30%, Ni 0.25%, Cr 0.75% , Nb 0.021%, V 0.040%, B 0.0015%, Ti 0.020%, and the balance is Fe and unavoidable impurities. Ceq is 0.59%, and the 300mm*1500 mm continuous casting slab is rolled into a 112mm*1500 mm steel plate.

[0028] The production method of the quenched and tempered high-strength steel plate of the present embodiment, the steps are as follows:

[0029] (1) Smelting: molten steel is smelted in an ultra-high-power electric arc furnace, and high-quality steel is selected. During the melting period, a large amount of slag is used to flow slag, and vacuum decarburization is used to make the C content 0.20%. Then it is sent to the LF refining furnace for refining. Deoxidation treatment, adjust the content of each component in molten steel so that the components meet the following weight percentages: Si 0.30%, Mn...

Embodiment 3

[0035] The composition of the quenched and tempered high-strength steel in this example is as follows: C 0.18%, Si 0.35%, Mn 0.90%, P 0.011%, S 0.003%, Mo 0.25%, Ni 0.23%, Cr 0.77% , Nb 0.024%, V 0.042%, B 0.0016%, Ti 0.020%, and the balance is Fe and unavoidable impurities. Ceq is 0.54%, and the 300mm*1500 mm continuous casting slab is rolled into a 72mm*1500 mm steel plate.

[0036] The production method of the quenched and tempered high-strength steel plate of the present embodiment, the steps are as follows:

[0037] (1) Smelting: molten steel is smelted in an ultra-high-power electric arc furnace, and high-quality steel is selected. During the melting period, a large amount of slag is used to flow slag, and vacuum decarburization is used to make the C content 0.18%. Then it is sent to the LF refining furnace for refining. Deoxidation treatment, adjust the content of each component in molten steel so that the components meet the following weight percentages: Si 0.35%, Mn ...

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Abstract

The invention relates to a hardening and tempering high-strength steel plate for wood based panel equipment and a production method of the steel plate, and belongs to the field of manufacturing low-alloy high-strength structural steel. The steel plate consists of the following chemical components in percentage by weight: 0.18 to 0.24 percent of C, 0.20 to 0.50 percent of Si, 0.80 to 1.20 percent of Mn, more than or equal to 0.02 percent of P, more than or equal to 0.01 percent of S, 0.20 to 0.50 percent of Mo, 0.20 to 0.50 percent of Ni, 0.70 to 1.00 percent of Cr, more than or equal to 0.003percent of B, 0.017 to 0.030 percent of Nb, 0.040 to 0.050 percent of V, 0.017 to 0.026 percent of Ti, and the balance of Fe and inevitable impurities. The production method of the steel plate comprises the following steps of: electric furnace smelting, vacuum decarburization / vacuum arc decarburization (VD / VOD) furnace vacuum decarburization, ladle furnace (LF) furnace refining, continuous casting (die casting), billet steel (ingot) clearing, heating, plate rolling, hardening and tempering, steel plate checking and polishing, tempering, sampling inspection, and warehousing. The hardening andtempering high-strength steel plate for the wood based panel equipment adopts Cr-Ni-Mo-B system micro-alloy elements for composite strengthening, and acquires good obdurability matching through a reasonable heat treatment process, and simultaneously the welding performance of a thick plate is not reduced.

Description

technical field [0001] The invention relates to a quenched and tempered high-strength steel plate for wood-based panel equipment, and also relates to a production method of the quenched and tempered high-strength steel plate for wood-based panel equipment, which belongs to the field of low-alloy high-strength structural steel manufacturing. Background technique [0002] Quenched and tempered high-strength steel plates require a reasonable chemical composition design and a suitable quenching and tempering process to ensure that various properties meet the requirements. The existing general quenched and tempered high-strength steel plates in China generally have high carbon equivalent and alloy content, poor welding performance, poor mechanical properties such as yield strength and tensile strength, and high production costs. Can not meet market demand. [0003] Quenched and tempered high-strength steel plates for traditional wood-based panel equipment are imported from abroa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/54C22C38/50C21C7/068C21C7/06C21C7/10C21D8/02C21D1/18
Inventor 张俊凯张仪杰王新李建立钱建华白永强尚建雄
Owner WUYANG IRON & STEEL
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