Honed silicon-manganese alloy; Manganese and silicon are the main alloying elements used in carbon steel. Manganese is one of the most important deoxidizers in steelmaking, and almost all steel grades need to be deoxidized with manganese. Because the oxygen product produced by manganese deoxidation has a low melting point, it is easy to float; Manganese can also increase the deoxidation effect of strong deoxidants such as silicon and aluminum. All industrial steels need to add a small amount of manganese as desulfurizer, so that the steel can be hot rolled and forged without breaking. Manganese is also the most important alloying element in various steels. More than 15% manganese will be added to alloy steel to increase the structural strength of steel. Silicon is the most important alloying element in pig iron and carbon steel after manganese. In iron and steel production, silicon is mainly used as deoxidizer of molten metal, or as alloy additive to increase the strength of steel and improve its properties. Silicon is also an effective grinding medium, which can transform carbon in cast iron into free grinding carbon. The silicon content in standard gray cast iron and nodular cast iron can reach 4%. A large number of manganese and silicon are added to molten steel in the form of ferroalloys: ferromanganese, ferrosilicon and ferrosilicon. Silicon-calcium alloy is a composite alloy composed of silicon, calcium and iron, and it is an ideal composite deoxidizer and desulfurizer. Widely used in the production of high-quality steel, low-carbon steel, stainless steel and special alloys such as nickel-based alloys and titanium-based alloys. Suitable for use as a heating agent in converter steelmaking workshop; It can also be used as an inoculant for cast iron and an additive in the production of nodular cast iron. Both calcium and silicon have strong affinity with oxygen. Calcium, in particular, has a strong affinity not only with oxygen but also with sulfur and nitrogen. Therefore, Si-Ca alloy is an ideal composite colloid and desulfurizer. Silicon alloy not only has strong deoxidation ability, but also can improve the properties of steel, improve its plasticity, impact toughness and fluidity. At present, Si-Ca alloy can replace aluminum for final deoxidation. Suitable for high quality steel. Production of special steels and special alloys. For example, steel grades such as rail steel, low carbon steel and stainless steel, and special alloys such as nickel-based alloy and titanium-based alloy can all be used as deoxidizers. Silicon-calcium alloy is also suitable as heating agent in converter steelmaking workshop, inoculant of cast iron and additive in nodular cast iron production.