Surface remediation process for large-size metallic component

Abstract

The invention discloses a surface remediation process for a large-size metallic component. The surface remediation process comprises the following steps: 1, associating process parameters of a laser cladding nozzle with powder beam gathering length at the outlet of the laser cladding nozzle; 2, establishing a three-dimensional model; 3, generating a scanning track route of the laser cladding nozzle; 4, confirming the maximum inclination angle of the laser cladding nozzle, selecting the process parameter of the laser cladding nozzle and the powder beam gathering length according to the association relationship established in the step 1, and controlling the laser cladding nozzle to remedy the surface of the metallic component to be remedied according to the scanning track route generated in the step 3. In the remediation process disclosed by the invention, the laser cladding nozzle can continuously move in a posture variable manner, so that the axis direction of the laser cladding nozzle is constantly kept being overlapped with the normal direction of the surface of the remedied component, rapid laser cladding remediation on the surfaces of large-size components and equipment is achieved, and the tedious workload of moving and clamping workpieces before remediation is reduced.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a surface repair process for large metal parts. Background technique [0002] Laser cladding technology refers to placing selected coating materials on the surface of the coated substrate with different filler methods, melting it and a thin layer of the substrate surface at the same time through laser irradiation, and forming a very low dilution and coating material after rapid solidification. A surface coating that forms a metallurgical combination with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the base material surface. [0003] Laser cladding technology has been widely used due to its advantages of fast cooling speed, small deformation, and excellent cladding layer performance. overwrite repair. In this process, the repair processing of the surface o...

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Problems solved by technology

[0004] However, the above-mentioned laser cladding surface repair process is not applicable to the surface repair of large parts and equipment with complex curved surface shapes (such as large turbine blades, rolling mill columns, steel ladles, etc.)

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