Graphite is an allotrope of elemental carbon, carbon atoms surrounding each link with the other three carbon atoms (the arrangement was more of a hexagonal honeycomb-like) covalently bonded to form a covalent molecule. Since each carbon atom will emit an electron, that electrons can move freely, and therefore belong to the graphite conductor. Graphite is one of the softest mineral, its uses include the manufacture of pencil lead, and a lubricant. Carbon is a nonmetallic element, located at the second cycle Group IVA of the periodic table. Latin for Carbonium, meaning "coal, charcoal," character "C" word by word plus stone charcoal "charcoal" word next to constitute, from the "charcoal" pronunciation. Melting in the molten iron is too saturated, with decreasing temperature of the molten iron, carbon is deposited on the surface of the casting graphite morphology, defect ductile iron, compacted graphite iron and other iron-carbon equivalent prone. Often appear in the casting thick at the surface, a lower surface of the sand core or casting solidification at last graphite, such as riser, riser neck edge. It was a dense dark spots (shiny black) graphite milk prices, a large number of spherical-shaped blossom, dendritic graphite aggregation. This is also a density segregation, continuous macroscopic fracture was evenly distributed graphite milk, uniform color of carbon graphite layer of black spots, low magnification microscope (20 to 40 times) was significantly observed gather graphite; 100 times under observation, graphite dense clusters or connected together. The area of ??high carbon content, magnesium, rare earths, sulfur is also high, hardness, tensile strength, impact toughness decreases. Sea Dragon graphite milk _ _ Carbon graphite provided by Carbon Co., Ltd. Weifang Sea Dragon. Carbon Co., Ltd. Weifang Sea Dragon (www.longmentanye.com) Shandong Weifang, graphite and carbon products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the North Sea Dragon carbon industry leadership with the staff warmly welcome all inquiries negotiations to create the North Sea Dragon carbon industry a better future.