As a manufacturing giant, China's manufacturing output value has reached or exceeded 19.8% of its global output value. However, a practical problem is that most of the entire manufacturing manufacturing technology lags behind the world's mainstream standards. It is just a " "Puffy" people, but not "strong."

The "machine tool", which is the mother of modern industry, is facing such problems. The vast majority of domestic machine tools are concentrated in low-end and high-end products. The reason, without it, apart from the failure to achieve breakthroughs in those core technologies, more is that the processing technology is not up to standard and can not meet the high-precision needs.

In the machine tool industry, the development of welding technology is developed with the application of the welding structure of machine tool products. Metal cutting machine tools, forging machinery and foundry machinery products are the main fields of application of welding technology in the machine tool industry. Welding technology has also gradually developed into a leading process in the machine tool industry, which is mainly reflected in the following aspects: (1) Some key enterprises have established welding workshops or metal structure plants with a certain scale, and established a complete welding management system. Absorbed and digested the imported product's welding process standards. (2) The welding process has been perfected, and it has evolved from a single processing technology into a comprehensive set of emerging comprehensive engineering technologies from raw material pretreatment, cutting blanking, forming, welding, post-weld testing and post-weld treatment. (3) CNC precision cutting and computer programming nesting technology has been applied. (4) Promote the use of advanced and efficient new processes such as CO2 gas and argon-enriched gas shielded arc welding or submerged arc welding. (5) X-ray detection and ultrasonic non-destructive testing are commonly used to stabilize the intrinsic quality of the weld. (6) The new process of vibration aging was promoted, and the purpose of reducing and homogenizing the residual stress of the welded structure was achieved. The deformation of the welded part was reduced and the accuracy was stabilized.

In addition, China's processing on the annealing process does not pass, it is a metal heat treatment process, refers to the metal slowly heated to a certain temperature, maintain enough time, and then cooled at a suitable speed. The purpose is to reduce the hardness, improve the machinability; eliminate the residual stress, stabilize the size, reduce the tendency of deformation and cracking; refine the grains, adjust the structure and eliminate the defects of the structure. In this case, however, the machine tool products of our country are easily deformed and rusted during actual operation, which leads to a reduction in the life of the machine tool.

Therefore, improving the processing technology of China's machine tools is one of the important conditions for upgrading the overall technical strength of China's machine tool industry.