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Customized Intelligent Manufacturing and Metal Surface Modification Laser cladding and surface hardening and repair The laser remanufacturing technology includes the following aspects: 1. Laser cladding technology It is a process method for melting the coating material at the same time with the thin layer on the surface of the matrix by laser irradiation, and then rapidly solidifying to form a coating with very low dilution and metallurgical combination with the matrix metal, so as to significantly improve the wear resistance, corrosion resistance, heat resistance and oxidation resistance of the surface of the matrix material. 2. Laser hardening technology It is a quenching process by using high density energy laser as energy to rapidly heat the workpiece and make the workpiece cooled and hardened naturally.Laser quenching is a quenching technology that uses laser to heat the surface of the material to above the phase transition point, and with the cooling of the material itself,the austenite is transformed into martensite, so as to harden the surface of the material. It includes laser phase change quenching and laser melting quenching. 3. Laser surface alloying technology It