China is the largest casting production country in the world today, according to the data, the output value of China's foundry products in the national economy accounted for about 1%. In recent years, the import and export trade of castings has increased rapidly, and the production of castings has reached about 9%. China's foundry points up to more than 20,000, casting industry practitioners up to 1.2 million.
"Yangtze River Delta" area of casting production accounted for 1/3 of the country, the region is mainly private enterprises, the development of the automotive and automotive parts industry has strongly driven the development of the foundry industry. Automobile technology is developing in the aspects of light quantification, numerical and environmental protection. According to the relevant information reported that for every 10% reduction in car weight, fuel consumption can be reduced by 5.5%, fuels can be increased by 3%-5%, while reducing emissions by about 10%. There are two main ways to lighten castings. One is the use of aluminum, magnesium and other non-ferroalloy castings, the United States 2003 statistics of 2/3 of aluminum castings used in automobiles, each vehicle reached the record kg. The second is to reduce the casting wall thickness, design multi-part composite castings, the production of thin-walled high-strength composite castings, and reduce the processing allowance, the production of near-final castings. With the rapid development of automobile technology, in order to shorten the production preparation cycle of castings and reduce the risk of new product development, it is required to adopt fast mold making technology, computer simulation, three-dimensional modeling, numerical control technology. Cleaner production and waste regeneration are the development trend of foundry industry, and reducing energy consumption is the theme of its sustainable development. China's automobile foundry industry must take the road of high efficiency, energy saving, materials, environmental protection and green casting, because the state and society require strict control of the automobile foundry industry's large energy consumers and large polluters, in order to improve the foundry industry hot, dirty, tired labor-intensive industry staff labor environment.
