SOME DISCUSSION ABOUT GRAPHITIZATION FURNACE

Graphitization is an important process of producing graphite electrode. Graphitization furnace is a resistance furnace designed for direct heating and intermittent operation according to the principle of joule law.

For Acheson graphitization furnace, the products put into the furnace and a small amount of resistance material constitute the furnace core.

For internal series furnace, the product into the furnace is the furnace core, the heating resistance by the product itself.Products are graphitized by their own heat.At present, the factory generally has acheson and internal heat series furnace two processing methods,

Acheson furnace is made of graphite blank and resistance material core, when the current through the core, the core temperature will reach 2500-3000 degrees to make the graphite blank graphenization,The advantage is large yield, the disadvantage is due to the uneven distribution of resistance material, resulting in uneven graphitization degree, product quality is difficult to ensure,

And internal heating furnace is the electrode head the head of a root row together, and there is no resistance, uniform current distribution, uniform product graphitization, but in the joint area due to the higher contact resistance, so prone to crack at both ends, caused serious crack of graphite electrodes perfect crack, this is the main reason for the internal string of furnace to produce waste,

Generally speaking, the small diameter graphite electrode is suitable for the manufacture of Acheson graphite furnace, 500-600 ultra-high power and above 800 ordinary industrial silicon graphite electrode is suitable for the manufacture of internal heat series furnace,Comments are welcome.