Graphite powder

There are many kinds of carburizer raw materials and different production processes.
It is not on the market to say that the use of graphite powder by pressing molding, this production needs to add too much binder molding, carbon content is generally not high quality carburizer requirements.
After pressing graphite powder, because it is a solid block, there is no porous structure, so the absorption rate and absorption rate is not as good as calcined, calcined carbon.
High-quality carburizer refers to the general graphitization of carburizer, in high temperature conditions, the arrangement of carbon atoms in the microscopic form of graphite, so called graphitization.
Graphitization can reduce the content of magazine in the carburizer, increase the carbon content of the carburizer and reduce the sulfur content.
The use of carburizer in casting can greatly increase the amount of scrap steel, reduce the amount of pig iron or do not use pig iron.
At present, most of the carburizer is suitable for electric furnace melting, and a small part of the carburizer is used for cupola.
In the charging method of electric furnace smelting, the carburizer should be put into the furnace together with scrap steel and other charging materials.
However, large quantities of molten iron should be avoided in order to avoid excessive oxidation and the carbon effect is not obvious and the casting carbon content is not enough.
The amount of carburizer is determined by the proportion of other raw materials and the carbon content.
Different types of cast iron, according to the need to choose different types of carburizer.
The characteristic of the carburizer is to select the pure carbon graphitization material to reduce the excessive impurities in the pig iron.