Zinc alloy die casting production, sand zinc alloy die casting is the most widely used, about 80% of the world's die casting are wood mold metal mold for sand die casting. At present, there are more than 30,000 die casting enterprises in China. In 2011, the annual output of die casting in China exceeded 40 million tons, consuming a lot of wood and metal. Therefore, the newly developed digital moldless zinc alloy die casting precision forming technology and equipment directly from the sand mold processing. Technicians only need to use the computer to make the required three-dimensional CAD model of the die casting, and then input the automatic planning path to the moldless zinc alloy die casting precision forming machine, and other work can be completed by the machine. It is reported that the use of the die-casting technology can reduce the development time by 50 to 80 percent, and the corresponding manufacturing costs can also be reduced by 30 to 50 percent. Therefore, the digital die - free casting precision forming technology has been called the revolution of die - casting technology.