Medium carbon ferro manganese

Medium-carbon ferro manganese is characterized by low carbon content. Medium-carbon ferro manganese can be used in many fields, but it is still widely used in the field of steelmaking. Manganese is a better element for steelmaking. Medium-carbon ferro manganese can greatly increase the hardness value of steel in steelmaking. It is used to produce special steel, stainless steel and other special steels. The carbon element of medium-carbon ferro manganese after special treatment can be reduced to about 0.2! Due to the characteristics of medium carbon ferro manganese, it is widely used in foundry industry, steel industry and steelmaking. It is mainly composed of manganese and iron. Ferro manganese is a widely used deoxidizer and alloy material in steelmaking. It is composed of Manganese ore is smelted by blast furnace and electric furnace. The density of manganese is 7.43g/cm3, the melting point is 1245, C, and the boiling point is 2150. Manganese and oxygen have a strong affinity and can form stable manganese oxide with oxygen. In addition, manganese As an alloy additive, iron can improve the hardness, plasticity, toughness and wear resistance of steel. It is widely used in structural steel, tool steel, stainless steel heat-resistant steel, wear-resistant steel and other alloy steels. Manganese also has desulfurization and reduces the harmful effects of sulfur. effect.

Medium-carbon ferro manganese is an indispensable deoxidizer and desulfurizer in the steel industry. Good steel needs to be deoxidized and desulfurized during the smelting process, and the use of deoxidizers will greatly increase the cost. Therefore, ferro manganese is an inexpensive deoxidizer. Desulfurization is the separation of sulfur and other harmful substances in steel, so that ferro manganese can achieve the purpose of desulfurization, effectively reduce the content of harmful elements in steel, and improve the quality of steel. In the steelmaking industry, about 3-5 kg of 75% manganese is consumed for each ton of steel produced. According to the different carbon content, ferro manganese can be divided into three categories: medium carbon: carbon does not exceed 0.7%; medium carbon: carbon does not exceed 0.7%~2.0%; high carbon: carbon does not exceed 2.0%~8.0%. Medium-carbon ferro manganese can be divided into medium-carbon ferro manganese with a carbon content of less than 0.7% and this product with a carbon content of 0.7%-2.0%. In the foundry industry, adding medium carbon ferro manganese to cast iron can be used as inoculation material and spheroidizing material of nodular cast iron, which can prevent the formation of carbides, promote the precipitation of graphite, greatly shorten the spheroidization time, and greatly reduce the formation of impurities in molten iron. Improve the quality of cast iron and improve the performance of cast iron. In addition, the water inlet blockage of the smelting furnace is reduced, and the service life of the smelting furnace is effectively extended.

In steelmaking, medium-carbon ferro manganese is a commonly used alloy as a deoxidizing material and alloy additive material. The manganese ore used for medium-carbon ferro manganese smelting generally requires 30-40% manganese, the ratio of medium-carbon ferro manganese is greater than 7, and the ratio of phosphorus to manganese is less than 0.003. Manganese carbonate ore should be roasted before smelting, and then sintered into powder ore. Ores with high iron and phosphorus content can only be used together, or manganese-rich slag with low iron and phosphorus content can be obtained through selective reduction. Coke is used as a reducing agent during coking. Some factories also use lean coal or anthracite, and the auxiliary raw material is mainly lime, and silicon dioxide is usually added when smelting manganese-silicon alloy.