There are many kinds of raw materials for the Carburizer, and the production process is also different. It is not said on the market that graphite powder is pressed and formed. This production method requires the addition of too much binder to form, and the carbon content generally does not meet the requirements of high-quality Carburizer. Since the pressed graphite powder is a solid block and has no porous structure, the absorption rate and the absorption rate are inferior to those of calcination and calcination. High-quality Carburizers generally refer to graphitized Carburizers. Under high temperature conditions, the arrangement of carbon atoms is in the microscopic form of graphite, so it is called graphitization. Graphitization can reduce the content of magazines in the Carburizer, increase the carbon content of the Carburizer, and reduce the sulfur content.
The recarburizing agent is used in casting, which can greatly increase the amount of scrap steel, reduce the amount of pig iron or use no pig iron. At present, most of the Carburizers are suitable for electric furnace smelting, and a small part of the reheating agent with a particularly fast absorption speed is used for the cupola. In the feeding mode of electric furnace smelting, the recarburizing agent should be placed together with the charging materials such as scrap steel, and the addition of small doses can be added to the surface of the molten iron. However, it is necessary to avoid feeding large quantities into the molten iron to prevent excessive oxidation and the carbonization effect is not obvious and the carbon content of the casting is insufficient. The amount of the Carburizer added is determined according to the ratio of other raw materials and the carbon content. Different types of cast iron, choose different types of Carburizers according to your needs. The characteristics of the Carburizer itself select pure carbon-containing graphitized materials to reduce excessive impurities in the pig iron. The selection of the Carburizer can reduce the casting production cost.