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1. Deoxidizer and desulfurizer
Ferromanganese is an indispensable deoxidizer in the steelmaking industry. Manganese can react with iron oxide to form manganate, which plays the role of oxygen remover, reduces the oxygen content in the steel, reduces the oxide content in the steel, and improves the purity of the steel.
At the same time, ferromanganese is also an effective desulfurizer. The binding force of manganese and sulfur is greater than that of iron and sulfur, and manganese sulfide with a high melting point can be generated when added to molten steel, which can be converted into slag for discharge, effectively reducing the content of harmful elements in steel and improving the quality of steel.
2. Improve the hardness and strength of steel
The manganese element in ferromanganese is able to form MnS with the carbon in the steel, which increases the hardness of the steel and enhances the strength and wear resistance of the steel.
3. Improve the toughness and cold brittleness of steel
Manganese can combine with sulfur in steel to form MnS with low melting point, preventing sulfur from being concentrated at grain boundaries, thereby reducing the brittleness of steel and improving the toughness of steel.
4. Adjust the grain size
The addition of an appropriate amount of ferromanganese can adjust the grain size of the steel and affect the structure and properties of the steel. Smaller grain sizes can improve the strength and plasticity of steel.
5. Alloying elements
As an alloy additive, ferromanganese and iron contain manganese and iron elements that can effectively increase the strength, hardness and corrosion resistance of steel.
6. Antioxidant effect
Ferro-manganese can reduce the oxidation reaction of steel at high temperatures, reduce the oxidation loss of steel materials, and prolong the service life.
In the steelmaking process, the choice of ferromanganese alloys is mainly based on their carbon content and specific use.
Carbon content: between 0.15% and 0.7%.
Features: Low-carbon ferromanganese is mainly used as a deoxidizer and alloy additive in steelmaking. Due to its lower carbon content, it helps to reduce the carbon content in the steel, which improves the properties of the steel.
Application: Widely used in the iron and steel metallurgical industry, especially where the carbon content of steel needs to be controlled.
Carbon content: between 0.7% and 2.0%.
Features: Medium carbon ferromanganese is a widely used alloy material, because it contains high manganese content and low sulfur content, it can effectively improve the hardness, strength and toughness of steel.
Application: Medium carbon ferromanganese is often used as an additive in steel production for the production of various types of steel, such as structural steel, wear-resistant steel, weathering steel, etc. It is widely used in construction, bridges, automobiles, machinery and other industries. In addition, medium carbon ferromanganese also plays a certain role in the field of environmental protection and can be used as a wastewater treatment agent.
Carbon content: between 2.0% and 8.0%.
Features: High carbon ferromanganese has a high melting point and oxidation resistance, and is an important deoxidizer and alloy additive. It can effectively reduce the content of other impurity elements and improve the mechanical properties and corrosion resistance of steel products.
Application: High-carbon ferromanganese is widely used in iron and steel metallurgy, casting, electronics industry and other fields. In the ferrous metallurgical industry, high-carbon ferromanganese is widely used as a deoxidizer and silicon-manganese alloy additive to improve the quality and performance of steel.
Main ingredients: manganese, iron, silicon
Features: Ferro-silicon-manganese is a commonly used deoxidizer and alloying agent, which can effectively reduce the oxygen content in molten steel and improve the quality of steel. It can also increase the hardness, toughness, wear resistance and other properties of steel.
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