company news about Application of Manganese metal

(1) Manganese metal as deoxidizer
In the process of steelmaking, some iron will be oxidized with impurities to form ferrous oxide. Due to the high solubility of ferrous oxide in molten steel, the oxygen content in molten steel will increase, and the increase of oxygen content in molten steel will increase the oxygen content in molten steel. It will affect the performance of steel, so it is strictly required that the oxygen content of steel shall not exceed 0.02% during production. When manganese is added to the molten steel, manganese will react with ferrous oxide to form insoluble oxide slag, which floats on the liquid surface of the molten steel, so as to reduce the oxygen content in the steel. In addition, manganese can also reduce FeO in steel to iron, so as to better improve the quality of steel.
(2) Use metal manganese as desulfurization agent
In molten steel, sulfur exists in the form of iron sulfide. In the hot working process of steel, the premature melting of FeS compound will cause the workpiece to crack, produce hot brittleness, reduce the ductility and toughness of steel, and produce cracks in the forging and rolling process. Sulfur is not conducive to weldability and reduces corrosion resistance. The binding force of manganese and sulfur is stronger than that of iron and sulfur. Therefore, after adding manganese alloy into the molten steel, manganese sulfide with high melting point will be formed, and then transferred to the slag to reduce the sulfur content in the steel and improve the forging and rolling properties.
(3) Manganese metal as alloy element
Manganese can improve the wear resistance, hardenability, strength and hardness of steel, so it can become an important alloy element of various steels. For example, adding 0.8% - 1.7% manganese to low alloy steel can increase the strength of steel by 20% - 30% compared with ordinary carbon steel.