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A brief discussion on the effect of using seamless metal calcium wire

1. The treatment effect of seamless metal calcium wire on molten steel and the process principle and effect of composite pure calcium wire. When calcium is added to molten steel, part of it dissolves into the molten steel and becomes dissolved calcium in the steel;

2. Part of the seamless pure calcium wire evaporates in the form of steam; part of it reacts with Al2O3 inclusions or S in the steel to form impurities. During the refining and continuous casting process after the treatment, such impurities float into the slag, and the remaining part remains in the steel as inclusions.

3. Modification of inclusions: Al2O3 becomes CaO-Al2O3 or CaO- Al2O3-CaS; CaS becomes CaO-Al2O3-CaS. Seamless pure calcium wire can effectively change the fluidity of molten steel. It saves the use of alloys and other deoxidation and desulfurization materials, and saves smelting costs.

4. The condition of inclusions in molten steel is related to the amount of calcium added, the time of addition, and the speed of addition.