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A high-carbon steel continuous casting production method with air-mist full-water combined cooling

A production method and gas mist cooling technology, which is applied in the field of high carbon steel continuous casting process, can solve the problems of large carbon center segregation, cracks, low shrinkage cavity and high shrinkage porosity of casting slab, so as to improve the quality of high carbon steel Quality, reduction of drawing broken wire rate, good internal quality effect

Active Publication Date: 2021-12-17
福建三钢闽光股份有限公司 +1
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Problems solved by technology

The internal quality of the high-carbon steel produced by using the existing technology or the technical solutions recorded in the above-mentioned patent documents still needs to be improved, and the carbon center segregation level is relatively large. In addition, the low-magnification shrinkage cavity and shrinkage level of the slab are relatively high, and there are cracks and other problems. defect

Method used

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  • A high-carbon steel continuous casting production method with air-mist full-water combined cooling

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Embodiment Construction

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] An aerosol method for producing high-carbon steel compositions all water cooled, comprising the following:

[0015] (1) produced with section two caster 160mm × 160mm high carbon steel, and controlling the carbon content 0.77% and 0.82%.

[0016] (2) the degree of superheat is controlled Tundish 18 ~ 32 ℃.

[0017] (3) cooling the high carbon steel with all water mist cooling devices.

[0018] like figure 1 Shown, all water mist cooling equipment of existing conventional equipment is mainly supported by the apparatus 1, the guide means 2, 3 consisting of a cooling device. The cooling device 3 comprises a foot mold roll segment, segment 30 that is 0; further comprising a secondary cooling spray section, is divided into sections I 31, II and III 32 section 33 section.

[0019] like figure 1 Shown, three rows of section 30 0 PZ5965QZ all water cooled nozzle, 31 is a six-row section of the I whole PZ4565QZ water cooling...

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Abstract

The invention discloses a high-carbon steel continuous casting production method with air mist full water combined cooling, and relates to the field of high carbon steel continuous casting technology, wherein the air mist full water cooling equipment is multi-stage cooling, and the front stage uses full water Cooling, using gas mist cooling in the later stage, combined with the control of various production parameters, a unique high-carbon steel continuous casting production process of gas mist full water combined cooling is formed, and the high carbon steel produced by the present invention is internally The quality is good, the slab has low shrinkage cavity and shrinkage porosity below 0.5 grade, no cracks and other defects, and the proportion of carbon center segregation grade above 1.15 is reduced from 22% to 2%, which can effectively improve the quality of high carbon steel and reduce the The wire breakage rate for subsequent users.

Description

Technical field [0001] The present invention relates to high-carbon steel continuous casting process, and more particularly a high-carbon steel is speaking method of producing an aerosol composition all water cooled. Background technique [0002] High-carbon steel carbon segregation has been one of continuous casting production problems, the main contradiction is to reduce carbon segregation and avoid other conflicts slab defects Shrinkage so on. Control central carbon segregation methods typically have an electrical terminal 1. stir;. 2 superheat control; 3. majority cooling water; 4 constant casting speed casting. The method of the above control center segregation of carbon steel has a plurality of domestic practice, the effect is obvious. In terms of a majority of water cooled in practice mere production while reducing the amount of water higher than carbon segregation of slab center may cause other serious defect formation slab, billet center as crack and the like. Suitable h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/124B22D11/115B22D11/12
CPCB22D11/1245B22D11/115B22D11/122
Inventor 汪灿荣蔡常青郑原首许英华马桂华林真丁大龙杨小志郑建华夏帅陈正权余胜红
Owner 福建三钢闽光股份有限公司
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