Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of Plasma Heating on the Metallurgical Effects of a Continuous Casting Tundish

Version 1 : Received: 20 October 2020 / Approved: 21 October 2020 / Online: 21 October 2020 (08:46:38 CEST)

A peer-reviewed article of this Preprint also exists.

Ye, M.; Zhao, M.; Chen, S.; Yang, S.; Li, J. Influence of Plasma Heating on the Metallurgical Effects of a Continuous Casting Tundish. Metals 2020, 10, 1438. Ye, M.; Zhao, M.; Chen, S.; Yang, S.; Li, J. Influence of Plasma Heating on the Metallurgical Effects of a Continuous Casting Tundish. Metals 2020, 10, 1438.

Journal reference: Metals 2020, 10, 1438
DOI: 10.3390/met10111438

Abstract

Steel products have experienced long-standing problems such as unstable product quality and low product homogeneity. In the continuous casting process, realizing constant temperature pouring is an effective way to improve product homogeneity. Plasma heating can compensate for the temperature drop during casting with a tundish and maintain a stable degree of superheating of the molten steel in the tundish. Plasma heating has a certain impact on the cleanliness of the molten steel and on the tundish covering flux in the tundish while compensating for the temperature drop. This paper uses SEM-EDS, XRD and FactSage to analyze the cleanliness of the molten steel and the characteristics of the tundish covering flux before and after heating. The results show that the number density of inclusions in the tundish is significantly lower after heating, improving the floating removal rate of small-sized inclusions; after heating, the surface morphology of the tundish covering flux sample appears transparent and glassy, with uniform morphology; XRD results show that the tundish covering flux after plasma heating exhibits no crystal precipitation and is amorphous and that there is a certain regularity before and after heating; there are no obvious changes in the composition of the tundish covering flux in the liquid phase area.

Subject Areas

Plasma heating; tundish; metallurgical effect; inclusions; tundish covering flux

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