Underwater laser repairing device and method based on metal matrix composite material preparation

Abstract

The invention discloses an underwater laser repairing device and method based on metal matrix composite material preparation, and relates to the technical field of laser repairing, the underwater laser repairing device comprises an upper end cover body, an inner layer drainage cylinder, an outer layer drainage cylinder and a water retaining cover; the upper end cover body is arranged at the top of the inner-layer drainage cylinder and the top of the outer-layer drainage cylinder, the inner-layer drainage cylinder is arranged in the outer-layer drainage cylinder, and the water retaining cover is arranged at the outer bottom of the outer-layer drainage cylinder; an inner drainage cavity is defined by the upper end cover body and the inner-layer drainage cylinder, and an outer drainage cavity is defined by the upper end cover body, the inner-layer drainage cylinder and the outer-layer drainage cylinder; the upper end cover body is provided with a protection lens right above the inner drainage cavity; the inner drainage cavity and the outer drainage cavity are both communicated with the interior of the water retaining cover; and a powder feeding nozzle and a wire feeding nozzle are arranged on the water retaining cover. The device solves the problem that the service quality of the underwater laser repairing cladding layer is poor. The reachability is high, and the application range is wide. And the device is small in size and light in weight, and can enter a narrow space to work by matching with the flexible characteristic of laser processing.

Description

technical field [0001] The invention relates to the technical field of laser repair, in particular to an underwater laser repair device and method based on metal matrix composite materials. Background technique [0002] Underwater laser repair: Use laser to process the surface of the workpiece in water, artificially use air or protective gas to drain the water in the local area around the workpiece to be repaired, and form a small local stable dry space, so that the laser can not be affected by water. The impact directly reaches the surface of the workpiece, and the defects are repaired by laser cladding, laser welding and other processes on the surface of the workpiece. [0003] Laval nozzle: The Laval nozzle is the most commonly used component of rocket engines and aero-engines. It consists of two conical tubes, one of which is a constricting section and the other is an expanding section. The cross-sectional area of ​​the tapering section of the nozzle shrinks from large ...

AI Technical Summary

Problems solved by technology

This device has several disadvantages: first, the structure of the inner and outer chambers of the device is simple, and it is impossible to avoid the influx of water into the inner chamber during processing. The inner chamber is not dry and the quality of cladding is reduced, thereby affecting the quality of underwater repair of components

Second, the existing technology only realizes underwater laser wire feeding repair. Due to the harsh underwater environment, aerosols during the laser cladding process, water film on the surface of the substrate to be repaired, and high-speed airflow of the drainage device will all have adverse effects on the repair. The quality of the cladding layer repaired by wire feeding cannot meet the service performance

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