Different forms of silicon calcium products
Calcium silicon is a combination of silicon and calcium products, can be used as cast iron inoculant, also can be used as reducing agent and deoxidizer, has a very good effect. According to the use of silicon and calcium in different places, products can be made into silicon and calcium powder, silicon and calcium wire, silicon and calcium cored wire, silicon and calcium alloy, etc., then these silicon and calcium products have different forms of expression, do they have the same use effect?
Both calcium and silicon have a strong affinity for oxygen. Calcium, in particular, has a strong affinity for oxygen, as well as for sulfur and nitrogen. So the silicon calcium alloy is a kind of ideal compound deoxidizer, desulfurizer. The deoxidizing product of silicon alloy is easy to float and discharge, and it can also improve the properties of steel, improve the plasticity, impact toughness and fluidity of steel. Silica-calcium alloy can replace aluminum for final deoxidization. Used in steel. Special steel and special alloy production. For example, rail steel, low carbon steel, stainless steel and nickel-based alloy, titanium based alloy and other special alloys, can be used as deoxidizer silicon calcium alloy. Silica-calcium alloy is also suitable for heating agent used in converter mill, inoculant in cast iron and additive in ductile cast iron production.
Silica-calcium alloys are mainly used in steelmaking and cast iron production.
Calcium and silicon have great affinity with oxygen, and the deoxidizing products are easy to float and easy to discharge, so the liquid steel deoxidized with silicon calcium alloy is relatively pure. In steelmaking and special alloys, silicon calcium alloy is commonly used as deoxidizing agent.
The calcium and sulfur in the silicon calcium alloy form the stable compound CaS, which is insoluble in the molten steel. Therefore, when the silicon calcium alloy is deoxidized, it also has the function of desulfurization.
In the production of cast iron, calcium silicon can improve the performance of cast iron more effectively than ferrosilicon. Silica-calcium alloy is an effective inoculant to promote the formation of spherical graphite, and can also play the effect of deoxygenation, desulfurization, denitrification and silicon increase.
