Tombarthite core-spun yarn for continuous casting

Abstract

The coated RE wire for continuous casting includes outer casing and wire core coated inside the casing, the outer casing is of steel and the wire core of rare earth material. It may be used in continuous casting to prevent crystallizer protecting dregs from performance degradation, ensure the quality and output of steel product, lower steel production cost and reduce bleedout accidents.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a rare earth cored wire for continuous casting. Background technique [0002] With the improvement of metallurgical continuous casting ratio, in some special steel types, especially high-quality steel and high value-added steel such as heat-resistant steel and weather-resistant steel, the method of adding rare earth from the continuous casting crystallizer with a wire feeder is adopted. Compared with the steel without adding rare earth, the total amount of oxygen, sulfur and inclusions of rare earth is lower, and the grain is refined by 1-2 grades, but the mechanism of action is not clear. The traditional method of adding rare earths is mainly to directly add rare earth wires into the crystallizer through a wire feeder, so that the rare earths can directly react with molten steel to purify steel and refine grains. However, the crystallizer pro...

AI Technical Summary

Problems solved by technology

The traditional method of adding rare earths is mainly to directly add rare earth wires into the crystallizer through a wire feeder, so that the rare earths can directly react with molten steel to purify steel and refine grains. However, the crystallizer protection added on the surface of the crystallizer The slag layer, due to the reaction with the added rare earth wire, degrades its performance. In the process of continuous casting and pouring steel, it may cause molten steel slag, affect the quality of the finished billet, and increase the probability of cracks in the billet. Serious Will directly lead to caster breakout accidents

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