Manganese and silicon are the main alloying elements used in carbon steel. Manganese is one of the main deoxidizers in the steelmaking process. Almost all steel types require manganese for deoxidation.
Because the oxygen product generated when manganese is used for deoxidation has a low melting point and is easy to float; manganese can also increase the deoxidation effect of strong deoxidizers such as silicon and aluminum. All industrial steels need to add a small amount of manganese as a desulfurizer so that the steel can be hot rolled, forged and other processes without breaking. Manganese is also an important alloying element in various steel types, and more than 15% is also added to alloy steels. of manganese to increase the structural strength of steel.
Silicon is the most important alloying element in pig iron and carbon steel after manganese. In steel production, silicon is primarily used as a deoxidizer for molten metal or as an alloying additive to increase the strength and properties of steel. Silicon is also a stone-ground medium, which can turn the carbon in cast iron into free stone-ground carbon. Silicon can be added to standard gray cast iron and ductile iron up to 4%.
A large amount of manganese and silicon are added to the molten steel in the form of ferroalloys: ferromanganese, silicon-manganese and ferrosilicon. With the urbanization of China, many industries continue to deepen, and the demand for steel is also increasing. With the development of my country's automobile, road, construction and other markets, the demand for steel and ferromanganese alloys will be increasing. The bigger, because silicon-manganese alloy has good market development prospects.
