Explanation

① The process of oxidizing and removing carbon from molten iron or steel during steelmaking. decarburization reaction is the most important reaction throughout the steelmaking process to turn high carbon pig iron into steel. Blowing high pressure oxygen into molten iron or molten steel bath can significantly speed up decarburization, while the generated C0 bubbles will cause strong boiling in the bath, accelerate heat and mass transfer in the bath and steel slag reaction, promote the elimination of gas and non-metallic inclusions, improve the quality of molten steel and increase the production rate of steelmaking. ② In the process of high temperature heating and thermal insulation of steel product or steel products, due to the role of the surrounding oxidation atmosphere, all or part of the carbon in the surface layer will be oxidized to generate gas, resulting in the process and phenomenon of reducing the carbon content in the surface layer, also known as surface decarburization. After decarburization, the hardness and wear resistance of steel product surface will decrease. decarburization can be prevented by controlling the composition and nature of heating medium, vacuum heating, coating anti oxidation coating and other technological measures.

Classification