Views: 0 Author: Site Editor Publish Time: 2024-06-05 Origin: Site
The main functions of manganese ingot in steelmaking are oxidation, desulfurization and alloy elements.
(1) Used as a reducing agent
In order to improve the quality of steel in the steelmaking process, carbon and sulfur must be removed from iron water. The simpler process is the oxidation.Manganese is an active metal that is chemically more active than iron. When manganese is added to molten steel, manganese will react with iron oxide to form oxide slag insoluble in molten steel, float on the surface of molten steel, and reduce the oxygen content in molten steel.The reduction capacity of manganese in molten steel is lower than that of other elements (such as calcium, aluminum and silicon), but it is still welcomed by steel enterprises because it is convenient in production and relatively low in price.Fer-manganese alloy reduction is an ideal reducing agent. Due to the weak reduction capacity of manganese, it can adjust the oxygen content in the steel without removing excessive oxygen and boiling.
(2) Used as a desulfurizer
Sulfur exists in the water of steel in the form of iron sulfide. The high sulfur content in steel is easy to cause the thermal embrittlement of steel and reduce the mechanical properties of steel. Therefore, the sulfur content should be controlled in the steelmaking process.Manganese and sulfur bind more strongly than iron and sulfur. After the addition of manganese alloy, the manganese sulfide with high melting point is easily formed together with the manganese in the molten steel and converted into slag, thus reducing the sulfur content in the steel and improving the plasticity and rolling capacity of the steel.
(3) Alloy elements
Manganese can enhance ferrites and refined beads, improve the strength, hardening, hardness and wear resistance of steel, thus becoming an important alloy element of all kinds of steel. For example, adding 0.8% -1.7% manganese to low alloy steel can increase the strength of the steel by 20% -30% more than that of ordinary carbon steel.