Si-Al-Ba-Ca

Si-Al-Ba-Ca alloy solubility in molten steel is small, but dissolved calcium and calcium to reduce the vapor pressure in the Si-Al-Ba-Ca alloy to fully enhance the role of calcium in deoxygenated and non-metallic inclusions of treatment, the use of the results show: deoxy-Si-Ba-Ca alloy billets enables the total oxygen content of between 9-15ppm; make inclusions in steel (compared with other oxygen scavenger) is reduced by about 75-80%; make inclusions in area distributed downward trend, the reason is calcium aluminosilicate deoxy, its inclusions aggregate and floating faster than aluminum killed; can quickly make the number of inclusions to achieve a lower level; debris can change shape, inclusions ball effect was more obvious; can refine ferrite grain, improve impact toughness and workability of steel, molten steel to improve liquidity and prevent nozzle clogging. Using barium calcium aluminosilicate molten steel deoxidation of the steel-making process can reduce (energy instead of using more deoxidizers), improve product quality, reduce production costs.