The absorption rate of carburizer affects the chemical composition of iron liquefaction. The absorption rate of different proportion of silicon, manganese, carbon and sulfur carburizer varies greatly in the melting process of electric furnace, and the influence of silicon, manganese, carbon and sulfur decreases in turn.
When we use carburizing agents,
When the initial carbon is increased by 0.1%, the absorbance of the carburant will be reduced by 1% ~ 2%.
When the initial silicon content is increased by 0.11%, the absorption rate of carburizing agent is large. About 3% to 4% reduction;
When the initial sulfur content increases by 0.1%, the absorbance of the carburant will be reduced by 1% ~ 2%.
For each 0.1% increase in the initial manganese content, the absorbency of the carburizer will increase by about 2%-3%. It can be calculated according to this ratio.
When the initial carbon content in molten iron is high, the absorption rate of carburizer is slow, the absorption amount is small, the burning loss is relatively large, and the absorption rate of carburizer is low under a certain dissolution limit.
When the initial carbon content of molten iron is low, under a certain dissolution limit, the absorbed rate of carburizer is fast, the absorbed amount is large, the burning loss is relatively small, and the absorbed rate of carburizer is high.
Silicon and sulfur in iron melt impede carbon absorption and reduce the absorbance of carburizing agents. Manganese can help carbon absorption and increase the absorbance of carburizing agent. As far as the extent of impact is concerned, silicon is the largest, followed by manganese, and carbon and sulfur are less affected.
Therefore, it can be concluded that the choice of adding time, the ratio of adding amount to furnace capacity and the melting time will affect the absorption rate of carburizer. Therefore, it is necessary to control the addition of carburizer reasonably to achieve the desired effect.