Silicon manganese nitride can remove or weaken the thermal ductility caused by sulfur, thereby improving the heat treatability of steel. It can also optimize ferrite crystals, increase the compressive strength of ferritic steel, and improve the cutting performance of the steel.
Silicon nitride offers high temperature resistance, resistance to thermal shock, resistance to heat and cold damage, stability to organic chemicals, and dielectric strength and quality. Suitable for silicon nitride and manganese nitride performance, better performance after melting silicon, manganese and nitrogen.
The mass fraction of manganese in silicon manganese nitride is 40%-50%, because sulfur-containing manganese can produce MNS with a high melting point and remove the harmful effects of sulfur. Manganese has good deamination ability and can combine with FEO in the steel to form MNOF and enter the coal ash, thereby improving the quality of the steel, reducing the ductility of the steel, and improving the compressive strength and strength of the steel. Therefore, manganese is a useful element in steel. In carbon steel, the conventional manganese content is 0.5% to 0.8%, while in alloy structural steel with higher manganese content, the manganese content is 0.7% to 1.2%.
The nitrogen content of silicon manganese nitride is usually 12-32%. It is a new anti-corrosion agent for iron-making alloys and an alloy agent for manufacturing high-nitrogen steel, alloy steel and stainless steel plates. Nitrogen is evenly added during the degreasing process. Throughout the cold rolling process, nitrogen is dissolved in dislocations to form nitrogen, carbon and other chemical substances. It has the functions of optimization, reinforcement and solid solution strengthening, improving the tensile strength, strength and compressive strength of steel. This improvement ensures that the plastic deformation and ductility of the steel are not reduced and the performance indicators are guaranteed.
