Laser cladding technology uses high-energy laser pointer beam irradiation to quickly melt, expand and solidify to cladding a layer of material with special physical, chemical or mechanical properties on the surface of the substrate to form a new material different from the substrate. To make up for the lack of high performance of the matrix.
According to the performance requirements of the workpiece, alloys of various components, metal-based conforming materials, etc. can be cladding to prepare surface coatings with characteristics such as heat resistance, corrosion resistance, wear resistance, friction reduction, oxidation resistance and non-magnetic properties, so that the material has conventional Deal with the organization and performance that it does not have.
Laser cladding technology belongs to the additive manufacturing technology of metals and their composite materials, and is an important supporting technology of laser intensified manufacturing, laser remanufacturing and laser 3D manufacturing technology. In addition, laser cladding technology is an additive manufacturing technology that can meet the needs of integration of forming and performance.
It can take into account both precision and high performance, integrating many modern advanced technologies such as green laser pointer technology, computer technology, numerical control technology and material technology, and has gradually developed into an advanced technology that can realize intelligent manufacturing. Moreover, laser cladding can solve the problems that cannot be accomplished by traditional manufacturing methods, and it is a high and new technology that is supported and promoted by the state.
Compared with many traditional surface treatment technologies, laser cladding technology has the following significant advantages and characteristics: 1. Laser cladding can produce a smaller heat-affected zone on the substrate, and the deformation of the workpiece is smaller. 2. Metallurgical bonding can be achieved between the cladding layer and the base material, and the dilution rate of the cladding material is low. 3. The cladding layer has small grains and compact structure, which can obtain high hardness, wear resistance and corrosion resistance. 4. It can achieve selective partial fine repair, and limited repair costs can be reduced. 5. The powder material system has relatively high adaptability, and most conventional and special metal powder materials can be cladding on the surface of metal parts.