the influence of elements in silicon aluminum barium calcium on steel

As a common additive, silicon-aluminum-barium-calcium not only has a good deoxidizing effect, but also can be used as a reducing agent. Silicon-aluminum-barium-calcium is a compound deoxidizer, which has better deoxidizing effect than ordinary deoxidizers. The content of other impurities in silicon-aluminum-barium-calcium is very small, so when used as a deoxidizer, it will rarely bring a large amount of impurities into the molten steel. Therefore, it is deeply loved by steel mills. What effect does this element have on steel?

       Silicon-aluminum-barium-calcium is now widely used in the steelmaking industry. Silicon-aluminum-barium-calcium is an ore containing silicon, aluminum, barium and calcium. It is mainly used as a deoxidizer and desulfurizer in the steelmaking industry. Improve the flow performance of molten steel and solve the problem of nozzle nodules. Reduce gas in steel and reduce molten steel inclusions.

       Silicon: It can increase the hardness of steel, but its plasticity and toughness are reduced. Electrical steel contains a certain amount of silicon, which can improve soft magnetic properties.

       Aluminum: It can refine the grain structure of steel and inhibit the aging of low carbon steel. Increasing the toughness of steel at low temperatures can also improve the oxidation resistance of steel, and improve the wear resistance and fatigue strength of steel.

       Barium and calcium: effectively reduce the vapor pressure of calcium in the steelmaking temperature range and increase the solubility of calcium in molten steel. Compared with silicon-calcium alloy, silicon-aluminum-barium-calcium alloy is used as a calcium source to add to molten steel. Even when the amount of calcium is half the amount of silicon-calcium alloy added, the calcium content in molten steel is about twice that of silicon-calcium alloy, and the calcium in molten steel is also significantly increased.

       When additives such as silicon, aluminum, barium and calcium are added to the molten steel, different elements will react with the original elements in the molten steel. If you want to improve the quality of the steel, you must strictly control the dosage of these additives. When silicon aluminum barium calcium is used, not only silicon can react with oxygen, aluminum and calcium can also react with oxygen in molten steel, which is more conducive to deoxidation. At the same time, its aluminum can also react with impurities such as sulfur and phosphorus in molten steel. The removal of harmful impurities in molten steel is also very helpful for the purification of molten steel.