In recent years, the rapid development of precision forging technology has promoted the progress of automobile manufacturing industry. Cold forging and warm forging are more and more used in automobile industry, and the product shape is more and more close to the final shape. Precision forging will be developed with the progress of technology and related technology in the future. In addition, for the purpose of reducing the production cost, reducing the weight of products, simplifying the design and manufacture of parts and enhancing the added value of products, the field of metal plastic forming is moving towards the development of high-precision net forming technology.

(1) compared with conventional Plastic Forming, the Forming process can meet the requirements of parts' dimensions and tolerances.

(2) the forming process of forming parts can meet the size and tolerance requirements of the parts without subsequent machining of the local important positions of the forming parts.

(3) within the dimensions and tolerances of the parts, forgings shall not be subject to subsequent machining processes.

Metal plastic processing is developing towards three goals:

(1) precision of products (development of clean parts)

(2) process rationalization (minimum investment cost and production cost as the principle of process integration and application)

(3) automation and labor-saving