Therefore, the Graphite Electrode in Different Size of the size of the carburizer is related to the diameter and capacity of the furnace. Some founders have misunderstandings when choosing carburizers. The first few furnaces of a plant used oil-soaked waste iron scraps, which caused electric sparks in the coils. 3. Because during high temperature graphitization, the sulfur content is reduced by the generation of SO2 gas. For the nodular iron molten iron, the equilibrium temperature is about 1450°C±20°C, and the gray molten iron molten iron is about 1400°C±20°C. 3. But in the laboratory and production process,

the temperature of the molten iron is always affected by many factors, so the actual carbon increase temperature fluctuates by about 10 ℃ on the calculated equilibrium temperature. It can be avoided by using pure materials. There are several aspects that need to be noted: 1. (6)

Add 50 kg of small carbon particles (less than 50×50 area) of scrap steel to closely cover the entire furnace pond. As the carbon content of the molten iron gradually increases, the utilization rate of carbon decreases. Since the lining has not been fully sintered, CO penetrates into the back of the lining, and the CO→C+O2↑ reaction occurs, and C is deposited on the cold surface of the lining or the insulation material. Low sulfur, nitrogen, and hydrogen elements are the key to preventing nitrogen holes in castings, so the lower the nitrogen content of the carburizer, the better. 2.

The effect of the carbonization process on the structure of the cast iron. Increase the number of nodular cast iron balls during inoculation, and increase the graphite nucleus in the molten iron of the electric furnace. When smelting in an electric furnace, high-quality molten iron is obtained by carburizing through low pig iron consumption or even zero consumption. (9) Spheroidizing treatment Hang the spheroidizing agent, ferrosilicon and cover the surface with high-quality iron cutting. The chemical composition is pure, high carbon, low sulfur, harmful components are extremely small, and the absorption rate is high. Factors affecting the effect of carbon increase 1.