Research and Application Progress of Plasma Heating Technology for Continuous Casting Tundish

Abstract

In the steel industry is facing the new normal situation of transformation and upgrading， with the help of intelligent equipment to drive the steel industry to green and high-end development is expected to achieve the optimization of the steel production organization. Continuous casting tundish with constant temperature and low superheat can effectively improve the quality of steel， so it is necessary to develop the heating technology of tundish. Therefore， tundish heating temperature control technology has been paid more and more attention. Regarding to the hot issues of tundish plasma heating technology， which has attracted increasing attention in recent years， systematically describes the heating principle and equipment characteristics， introduces the research and development of equipment and metallurgical functions of plasma heating technology at home and abroad， and mainly analyzes the influence of plasma heating technology on the flow field， temperature field， inclusion removal and chemical composition of steel liquefication in tundish， and the metallurgical effect of practical application. Based on the deep understanding of the research and application of plasma heating technology， the new problems found in the heating process of a new type of hollow graphite electrode plasma equipment independently developed in China are discussed， and the ways to further improve its metallurgical effect are discussed. Analysis indicates that the domestically developed hollow graphite electrode plasma heating equipment is better suited to meet the transformation needs of China's steel industry. This equipment provides an effective solution to issues such as the instability of superheat in casting steel， lower cleanliness levels in molten steel， and uneven composition of molten steel. It addresses the shortcomings in the intelligent positioning of the "one-key heating" intermediate package， thus enhancing its precision.

Keywords

• continuous casting； tundish； plasma heating； flow field； temperature field； inclusion removal