Laser metal deposition is a generative manufacturing method for metals. The main advantages of LMD are higher building rate、many material choice、Flexibility and little change of the surface.

Laser welding technology has significant advantages such as low heat input, low deformation, and high efficiency. It has been widely used in modern industrial production, including automobiles, rail transit, energy, aerospace, steel, electronics and other industries. The advent of new high-power and high-brightness lasers and the rapid development of beam shaping technology have led to more diversified developments in current laser welding technology.

Ultra-high-speed laser cladding technology is mainly used to improve the wear resistance, corrosion resistance, high-temperature resistance, and oxidation resistance of the surface of the parts, so as to achieve the goal of surface modification or repair, and meet the requirements for the specific performance of the material surface.

In the process of modern coal mining, affected by the complex underground environment of the coal mine, the hydraulic support has been in a weak acid and high humidity state for a long time, causing serious damage to the hydraulic support's cylinder structure. WILA uses a laser cladding process to repair the inner wall of the cylinder barrel, which has a very good effect on large over-tolerance range, large area corrosion, and cylinder expansion.