Title

Effect of BaO on the Properties of Continuous Casting Mold Flux

Abstract

Lubrication and heat transfer control are the most important functions for mold flux during continous casting of peritectic steels. Fluoride-bearing mold flux is usually used during continuous casting, forming cuspidine precipitated phases. Fluorides in the mold flux should be less used since they induce environment pollution and corrosion of the mold copper plate. In the current study, the mold flux containing both BaO and fluoride was investigated. This kind of mold flux may have a good property to cast peritectic steels. A new method evaluating the ability of heat transfer was designed to test the density of liquid flux and solid flux in order to calculate solidification contraction ratio of mold flux. The mineralogical phases and morphology of crystalline phases in the mold flux were detected using X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS). Experimental data indicated that BaO could improve the lubrication ability of the tholten flux and restrain the formation of cuspidine phase.

Department(s)

Materials Science and Engineering

Keywords and Phrases

BaO Cuspidine; Continuous Casting; Heat Transfer; Mold Flux

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 The Minerals, Metals & Materials Society (TMS), All rights reserved.

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