As an important part of additive manufacturing technology, laser cladding technology is a new advanced green manufacturing technology that replaces traditional surface treatment technology. The utility model utilizes a high-energy laser as a heat source, simultaneously melts the high-performance powder and the base material of the part, and forms a surface cladding layer with wear resistance and corrosion resistance on the surface of the part, which not only improves the use performance of the parts, but also prolongs the service life by two. three times.

Recently, the inner wall laser cladding technology developed by Xi'an Aide 3D Technology Co., Ltd. was officially released, and has been put into practical use in Xi'an Heavy Equipment Group Tongchuan Coal Mine Machinery Co., Ltd., for the hydraulic support equipment for mining support, cylinder parts The corrosion-resistant layer processing of the inner surface has been extensively tested and practically used. So far, all products have been used normally, and their performance has been greatly improved compared with the traditional molten copper technology under the same cost input.

According to Liu Tao, the chairman of the board, the inner wall laser cladding technology replaces the traditional electroplating, which is low in cost, more environmentally friendly and reproducible. In the past, customers needed to repair the outer wall of the piston rod, the inner wall of the cylinder and the outer wall in three companies. Now it can be completed directly in their company, which not only saves customers a lot of time, but also reduces the freight rate by nearly 25%, and it is easy to pursue quality problems in later products.

Laser cladding technology is mainly used in the surface treatment of large high-value parts, especially in the surface treatment of large iron-based rotary parts. At this stage, the related technical processes have become mature for the cladding processing of the outer surface of the part, and a wide range of applications have been realized. However, the laser cladding process for the inner wall of the part, especially the inner surface of the thin-walled part, has been the bottleneck of the application of this technology.

Two years ago, Xi'an Aide Three-dimensional Technology Co., Ltd. and Xi'an Jiaotong University, Xi'an University of Science and Technology, Xi'an Institute of Optics and Mechanics, and Nanjing Optics Institute carried out special research on the laser cladding technology of the inner wall of the rotating parts. After two years of theoretical analysis and A large number of tests have verified that the internal surface cladding equipment for 27SiMn, 40CrMnSi and other materials has been developed. The equipment uses IPG fiber-coupled lasers to independently develop control systems and mounting and operating devices.