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Ferro-aluminium alloy with low carbon, low phosphor and low sulphur content for final deoxidizer in steelmaking

A final deoxidizer, aluminum-iron alloy technology, applied in the field of aluminum-iron alloys, can solve the problems of poor final deoxidation effect, and achieve the effects of cost reduction, good deoxidation effect, and reduction of non-metallic inclusions

Inactive Publication Date: 2006-09-06
本溪冶炼集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies of the above-mentioned deoxidizers, the purpose of the present invention is to provide a micro-low carbon, low phosphorus, low sulfur aluminum-iron alloy used as a final deoxidizer for steelmaking, to solve the problem of poor final deoxidation effect in the prior art As a final deoxidizer for steelmaking, there is no need to refine steel, improve steel quality, and reduce costs. It is suitable for smelting steel types that require Als and low C, low P, and low S.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 (percentage by weight)

[0031] Al 60%; C 0.012%; P 0.018%; S 0.013%; Si 0.51%;

Embodiment 2

[0032] Embodiment 2 (percentage by weight)

[0033] Al 62%; C 0.017%; P 0.020%; S 0.017%; Si 0.81%;

Embodiment 3

[0034] Embodiment 3 (percentage by weight)

[0035] Al 63%; C 0.015%; P 0.016%; S 0.018%; Si 1.10%;

[0036] When the present invention is used for final deoxidation, the addition amount is 1.2-1.4kg / t, and compared with the prior art, the cost is greatly reduced. In addition, the Al content of the present invention is 60-64%, which is more suitable as a final deoxidizer for steelmaking. If the Al content is lower than 60%, the degree of deoxidation is not enough, the deoxidation effect is not good, and waste products are prone to bubbles; if the Al content is higher than 64%, the aluminum content is too high to reduce the iron content in the alloy, the specific gravity is small, and the deoxidation effect is not good. In addition, the aluminum content is too high to increase the production cost. The final deoxidizer of the present invention is easy to use and operate, has good deoxidation effect, high alloy yield, high steel refining rate, good steel quality, reduces dissolv...

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PUM

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Abstract

Disclosed is a ferro-aluminium alloy with low carbon, low phosphor and low sulphur content for final deoxidizer in steelmaking aiming at solving the problem of bad end deoxidization effect existed in the prior arts. The alloy comprises the constituents (by weight percentage) of C<=0.03, Al 60-64, Si<=1.5, P<=0.025, S<=0.025%, and balancing Fe.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a slightly low-carbon, low-phosphorus and low-sulfur aluminum-iron alloy used as a final deoxidizer for steelmaking. Background technique [0002] With the rapid development of the iron and steel industry, it is required that the quality of steel products must be upgraded to meet the requirements of various aspects. It is also required that the final deoxidizer used in steelmaking should be upgraded accordingly, and new varieties should be replaced to meet the various requirements of steelmaking. need. In the past, it was difficult to smelt aluminum-containing steel, and the acid-soluble aluminum (Als) content in the steel was required to be higher than 0.006%, because the demand for these steel types was large, and in order to smelt these steels, the boxing method was adopted. That is, before smelting Als-containing steel, you must first calculate the amount of Al lumps to be added, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/06C22C21/00
Inventor 李兴有
Owner 本溪冶炼集团有限公司