China's foundry industry in history has created a brilliant. Shang and Zhou bronze exquisite still make the world wonder. However, China casting foundry machinery and technical level compared with foreign countries there is a big gap, which seriously restricts the development of the national economy.

Foundry industry is an important part of the manufacturing sector, to enhance the development of national economy and national defense strength plays an important role. Casting is the basis for the automotive, petrochemical, steel, power, shipbuilding, textile, equipment manufacturing and other pillar industries, and advanced casting technology is an important part of advanced manufacturing technology. The statistics show that China casting production has for many years ranked first in the world. Although our casting production has been ranked first in the world, but in terms of overall quality, material structure, cost, energy consumption, production efficiency and cleaner look far casting power.

The gap between China's foundry industry, mainly in the overall quality of casting, casting production technology and technical equipment and other basic conditions. Accuracy in terms of size, my casting generally lower than in developed countries 1 to 3, the surface roughness is also worse than in developed countries from 1 to 2 levels. An engine cylinder roughness of 25 microns to 100 microns, 12.5 microns abroad to 25 microns. In the casting process and equipment and other basic conditions, our overall gap with developed countries is relatively large. In molding and core, developed countries mass production of medium and small casting mold, use a high-pressure, high-speed, injection pressure, such as efficient assembly line, using resin sand core. Only a small number of large foreign enterprises to adopt advanced modeling, core processes. As the gap between the technology and devices, so that our casting is not fine, from big casting technology developed nearly no margin gap, particularly in terms of greater precision molding technology gap with developed countries.