The principle and characteristics of calcium treatment of seamless calcium wire to molten steel

The treatment effect of calcium on molten steel and the technological principle and effect of composite pure calcium line are as follows:

Calcium is added to steel water, and a part of it is dissolved on steel liquid to form calcium in steel; Part of the volatilization is in the form of steam; Some of them react with Al2O3 inclusions or s in steel to form impurities. During the refining and continuous casting after the treatment, the impurities float up into the slag, and the remaining part remains in the steel to become inclusions. The denaturation treatment of inclusions: Al2O3 becomes CaO-Al2O3 or cao-al2o3-cas; CAS becomes cao-al2o3-cas. It can effectively change the fluidity of steel. The use of alloy and other deoxidation and desulfurizing materials is saved, and smelting cost is saved. The inclusion condition in molten steel is related to the amount of calcium, the time and the speed of inclusion.

The treatment of the inclusion in the clean steel by seamless calcium wire and changing the composition of the molten steel is the normal process of the smelting. How to improve the absorption of calcium in the process of steel making, stabilize the calcium content in the molten steel, reduce the cost of calcium feeding line, better apply to smelting refined steel products and reduce costs are the goals that steel companies have been seeking. The processing technology of our company is in line with pure calcium, which meets this requirement. The metallurgical basic characteristic melting point of calcium is 850 ℃, boiling point is 1480 ℃, density is 1.55g/cm3, the melting degree is close to zero in molten steel, and has a great affinity for oxygen. Liquid calcium can dissolve Al2O3 inclusions. The Al2O3 and calcium in molten steel are treated with large liquid inclusions, which makes it easier to float up. The water inlet blockage caused by too much Al2O3 in the steel is reduced, and the pouring ability of the steel is improved. The Al2O3 inclusions remained spherical after calcium treatment, and the rolling properties were improved.

The above contents introduce the principle and characteristics of the calcium treatment of seamless calcium wire to the molten steel, and more excellent knowledge of the composite pure calcium wire is in the national new material company.