What is the principle of the process equipment of high-speed laser cladding equipment?

　　 High-speed laser cladding equipment Laser cladding is a process where external material is added to a gas-formed molten pool through laser irradiation, with the material added synchronously or pre-placed, and then rapidly solidified together to form a cladding layer.

　　 High-speed laser cladding equipment Characteristics of laser cladding: Low dilution of the cladding layer, but strong bonding strength, metallurgical bonding with the substrate, significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance or electrical properties of the substrate material surface, achieving surface modification or repair purposes, meeting the specific performance requirements of the material surface, while saving a lot of material costs. Compared with surface treatment, spraying, electroplating, and gas deposition, laser cladding has low dilution, dense structure, good bonding between the coating and the substrate, and a wide range of cladding materials suitable for particle size and content changes, so the application prospect of laser cladding technology is very broad.

　　From the current application examples of laser cladding, it is mainly applied in three aspects: 1. Applied to the surface modification of materials such as combustion turbine blades, rollers, and gears. Second, surface repair of products, such as rotors and molds. According to relevant data, the strength of the repaired parts can reach more than 90% of the original strength, the repair cost is less than 1/5 of the replacement price, and more importantly, it shortens the repair time. It solves the problem of rapid repair of rotating parts needed for the continuous and stable operation of major complete sets of equipment in large enterprises. In addition, by using wear-resistant and corrosion-resistant alloys through laser cladding on the surface of major components, the service life of the components can be greatly improved without deforming the surface of the components. Laser melting treatment of the mold surface not only improves the mold strength but also reduces the manufacturing cost by two-thirds and shortens the manufacturing cycle by four-fifths. Third, laser additive manufacturing. By simultaneously sending powder or silk, layer-by-layer laser fusion is performed to obtain three-dimensional structural components. This technology can also be called laser melting deposition, laser metal deposition, laser direct melting deposition, etc.

　　Cladding materials for high-speed laser cladding equipment: Mainly used: nickel-based, cobalt-based, iron-based, titanium alloys, copper alloys, particulate metal matrix composites, ceramic materials, and many other laser cladding materials.

　　 High-speed laser cladding equipment What is the principle of the process equipment?

　　Cladding process: According to the supply method of the cladding material, laser cladding can be divided into two categories: pre-placed laser cladding and synchronous laser cladding.

　　Pre-placed laser cladding pre-positions the cladding material on the surface of the substrate, and then uses a laser beam to scan and melt the cladding material. The cladding material is added in the form of powder or wire, with powder being more commonly used.

　　Synchronous laser cladding simultaneously sends powder or wire cladding material through a nozzle to the molten pool during the melting process. The molten material is added in the form of powder or wire, with powder being more commonly used.

　　The main process of pre-placed laser cladding is: substrate cladding surface pretreatment - pre-placed cladding material - preheating - laser cladding - post-heat treatment.

　　The main process of synchronous laser cladding is: substrate cladding surface pretreatment - preheating - synchronous laser cladding - post-heat treatment. According to the process, the processes related to laser melting are mainly the substrate surface pretreatment method, the cladding material supply method, preheating, and post-heat treatment.

　　Laser working principle of high-speed laser cladding equipment:

　　The complete set of high-speed laser cladding equipment consists of: laser, cooling device, powder feeding mechanism, processing workbench, etc.

　　Laser selection: Mainstream laser types support the laser cladding process, such as CO2 lasers, solid-state lasers, fiber lasers, and semiconductor lasers.