Establishment of economic deoxidation platform technology for carbon steel

Abstract

Abstract: The traditional deoxidation mechanism of carbon steel was described in this paper, and the deoxidation costs of ferroaluminum and Si-Ca-Ba alloy were analysed and compared. In order to solve the problems such as too many inclusions forming using ferroaluminum deoxidation, bad oxygen removal effect using Si-Ca-Ba alloy deoxidation, and heavy submerged nozzle erosion problems, the deoxidization process of carburant and ferrosilicon was put forward, which could reduce the cost and improve the quality of molten steel. The deoxidation cost was reduced by 3.68 yuan/t, when the end point carbon mass fration was 0.04%~0.05%, the deoxidation cost was reduced by 3.33 yuan/t, when the end point carbon mass fration was 0.06%~0.10%. Meanwhile, the effective solution for rephosphorization and continuous castability which caused by the new technology was proposed.

Key words: carbon steel, deoxidization, endpoint control, rephosphorization

jimmy knancy. Establishment of economic deoxidation platform technology for carbon steel[J]. Steelmaking, 2015, 31(3): 41-44.

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