Control recarburizer to best absorptivity
The recarburizer absorption rate affects the chemical composition of the molten iron. The recarburizers with different proportions of silicon, manganese, carbon, and sulfur have different absorption rates during the melting process of the electric furnace. The effects of silicon, manganese, carbon, and sulfur decrease in turn .
When we apply carburants:
For every 0.1% increase in initial carbon content, the recarburizer absorption rate decreases by about 1% to 2%;
For each 0.11% increase in the initial silicon content, the recarburizer absorption rate is large. It is reduced by about 3% to 4%;
For every 0.1% increase in the initial sulfur content, the recarburizer absorption rate decreases by about 1% to 2%;
For every 0.1% increase in the initial amount of manganese, the recarburizer absorption rate increases by about 2% to 3%, and it can be calculated according to this ratio.
When the initial carbon content in the molten iron is high, the absorption rate of the recarburizer is slow, the absorption amount is relatively small, the burning loss is relatively large, and the recarburizer absorption rate is low under a certain dissolution limit.
When the initial carbon content of the molten iron is low, under a certain dissolution limit, the recarburizer absorbs fast, absorbs more, burns relatively little, and the recarburizer has a high absorption rate.
Silicon and sulfur in the molten iron hinder the absorption of carbon and reduce the absorption rate of the recarburizer. The manganese element helps the absorption of carbon and improves the recarburizer absorption rate. As far as the impact is concerned, silicon is the largest, followed by manganese, and carbon and sulfur are less affected.
Therefore, it can be concluded that the selection of the timing of adding the recarburizer, the ratio of the amount of addition to the capacity of the electric furnace, and the melting time will all affect the absorption rate of the recarburizer. Therefore, it is necessary to properly control the addition of the recarburizer to make it ideal. Effect.