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Overview of seamless calcium wire calcium deoxidation technology

Calcium is a strong deoxidizer used in steelmaking so far. In molten steel, calcium has a unique chemical connection with dissolved oxygen and total oxygen in non-metallic inclusions. Calcium treatment can improve the grain size of steel, and at the same time, it is a very effective means for desulfurization, deoxidation, alloy fine-tuning and control of inclusion morphology in molten steel. Especially in improving the castability of aluminum-killed steel molten steel, the advantages are more obvious.

Seamless calcium wire ladle feeding technology, foreign countries began to use it in steel mills for molten steel treatment in 1970. It has been widely used in international steel companies, especially the rise and rapid development of thin plate continuous casting technology. In 1990, the patent for seamless calcium wire technology was introduced in China. The technique of feeding calcium wire into the ladle to treat the molten steel with calcium is a widely used wire feeding technique in the world.