Carburizer for Electric Furnaces
Carburizer for Electric Furnaces are mainly used in the process of smelting cast iron in intermediate frequency furnaces, and require high levels of sulfur and nitrogen.With the continuous improvement of environmental protection requirements, more and more attention is paid to resource consumption, and the prices of pig iron and coke continue to rise, resulting in an increase in the cost of castings. More and more foundries have begun to use electric furnace smelting to replace traditional cupola smelting. For induction furnaces, especially medium frequency induction furnaces, due to the increase in the amount of scrap steel added, adding carburizers has become an essential part of the smelting operation. The addition of metal charge in the induction furnace cannot ensure the amount of carbon required by the molten iron, and a carburizer must be added. Large-scale use of scrap steel in electric furnace smelting can not only reduce costs, but also improve the mechanical properties of castings, but the quality of the carburizer used plays a key role.
Carburizer for Electric Furnaces advantages：
1.Improved carbon content.
2.Carburizer for Electric Furnaces enhanced graphite formation, reduced production costs.
3.It can improved quality of castings, and reduced production time.
Application note of Carburizer for Electric Furnaces
1. The sulfur content in the carburant should be low. Generally, a carburant with a sulfur content of less than 0.05% should be used to prevent the sulfur content in the molten iron from being too high.
2. A carburant with less nitrogen should be selected. Excessive nitrogen content in the carburant will cause nitrogen pore defects. Nitrogen pores are one of the common defects in the production process of castings. The usual mass fraction of nitrogen in cast iron molten iron is below 100 ppm. If the nitrogen content exceeds this concentration (150-200 ppm or higher), it is easy to cause cracks, shrinkage or porosity in the castings, and thick-walled castings are more likely to occur.
3. The fixed carbon and ash content in the carbon raiser are its main indicators. Excessive ash content will inhibit the carbon raiser and increase the working time and labor cost. From the perspective of the carbon raiser efficiency, the fixed carbon content of the carbon raiser should be high, and ash content should be low.
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