3.1 effect of silicon on Carburizing effect of carburizing agent
Silicon in molten iron has a great influence on the effect of carburization. The molten iron with high silicon content has poor carburization. Someone made the mass fraction of Si in molten iron change within the range of 0.6% ~ 2.1%, and added two kinds of carburizers A and B as shown in Table 1 to observe the difference in carburizing time after adding the carburizer. The results are shown in Figure 3. When the mass fraction of Si in molten iron is high, the carburizing speed is slow.
3.2 effect of sulfur on Carburizing effect of carburizing agent
Just as the mass fraction of silicon in molten iron has an impact on the carburization effect, so does the content of sulfur. With the carburizer a in Table 2, add the iron sulfide for the reagent before adding it, and observe the effect of the mass fraction of s on the carburization. When iron sulfide is added and the mass fraction of s in the molten iron is 0.045%, compared with the low sulfur molten iron without iron sulfide and the mass fraction of s in the molten iron is 0.0014%, the carburization speed is much slower.