Application of graphitization recarburizer in production of cast iron and cast steel
I believe we all know that recarburizer, also know that there are different types of recarburizer, graphitization recarburizer is one of them. Graphite recarburizer needs to go through strict screening process, and then through high temperature processing can be produced, it plays a great role in casting, metallurgy and other industries, can be said to be an excellent metallurgical materials. Generally speaking, the common coal recarburizer in the casting is unable to achieve the advantages and effects of graphitization recarburizer.
Graphitization recarburizer refers to the carbon products through high temperature or other ways to make its molecular structure change, regular arrangement, this molecular arrangement makes the molecular spacing of carbon wider, more conducive to the decomposition of nucleation in liquid iron or steel. The graphitization recarburizer on the market now generally comes from two ways, one is the scrap cutting of graphite electrode, and another is the graphitization products of petroleum coke at 3000 degrees.
There are many kinds of raw materials of recarburizer, and the production process is also different. Graphite recarburizer is not said on the market by graphite powder by pressing molding, this production method needs to add too much binder molding, carbon content is generally not up to the requirements of excellent recarburizer. After pressing the graphite powder, because it is a solid block, no pore structure, so the absorption rate and absorption rate is not as good as the calcination, roasting molding carburizer. Excellent recarburizer must be a graphitized recarburizer, under high temperature conditions, can also reduce the content of impurities in the recarburizer, improve the carbon content of the recarburizer, reduce the sulfur content. Recarburizer belongs to steelmaking, cast iron and other industrial production of recarburizer raw materials, is an essential auxiliary additive.
