Graphite and carbon products have excellent performance, used widely, productivity and efficiency was a rapid growth trend. 2011 graphite milk, China's carbon and graphite products industry is developing rapidly, the industry's high cost of business management and control capabilities, strong profitability. National Bureau of Statistics data show that in 2011 graphite, graphite and carbon products of China's industrial output value of 167.564 billion yuan industry; to achieve sales revenue of 167.765 billion yuan, an increase of 40.58%; total profit of 10.959 billion yuan graphite milk prices, an increase of 50.87 %. With the application of the continuous promotion of carbon graphite, graphite and carbon products industry, our competition has become increasingly fierce. Pure charge subcooling large, is not conducive to the nucleation of graphite precipitation, less float. The main measures should be controlled to prevent the carbon equivalent according to the casting wall thickness; when small pieces of the wall thickness of not more than 30mm, appear critical carbon graphite floating equivalent of 4.7% - 4.9%; when the wall thickness of 30 to 100mm, appear critical carbon graphite floating equivalent of 4.5% - 4.6%; float appeared critical graphite carbon equivalent of 4.4% ~ 4.5% when the large wall thickness greater than 100mm. In particular, to control the carbon is less than 4. O%; the appropriate use of scrap, pig iron and silicon lower back with the use of charge; controlling the residual amount of rare earth is not too high; pouring temperature control; large cross section castings may be appropriate to add molybdenum or partial placement also prevents cold iron graphite float (see carbon equivalent cast iron, ductile iron). Carbon graphite, the North Sea Dragon Carbon and graphite 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.