Graphite crucible with good thermal conductivity and high temperature resistance, at high temperature in use process, small thermal expansion coefficient, the thermal shock, quenching has certain strain resistance. Of acid and alkaline solution of strong corrosion resistance, excellent chemical stability. In metallurgy, casting, machinery, chemical and other industries, has been widely used in alloy tool steel smelting and smelting of nonferrous metals and their alloys. And has a good technical and economic effect.The basis of mold is widely used in industrial production process equipment, mould industry is the basic industry of national economy. Widely used in modern industrial production, product parts forming, extrusion forming, stamping, die-casting, forging forming, plastic injection, or other forming method, and the forming mould, make the billet forming parts to meet the requirements of the product. That we use in our daily life and production to the various tools and products, to the base of the machine tool, the fuselage shell, small to a germ head screws, buttons, and all kinds of household appliances shell, which has close relation with the mould. The shape of the die decides the shape of the products, precision mold processing quality and determines the quality of these products. Rapid development in recent years, mould industry, graphite material, new technology and the increasing of die mold factory constantly hitting the market, the graphite with its good physical and chemical properties gradually become the preferred material of mold production.