Rapid laser repair method and device for defect of aluminum alloy guide blade

Abstract

The invention belongs to the technical field of rapid laser repair, and particularly relates to a rapid laser repair method and a device for a defect of an aluminum alloy guide blade. The device is characterized by comprising an industrial control computer, a robot control cabinet, an optical fiber laser, a powder feeding device, a robot body, a camera, a laser ranging sensor, a laser light path unit, a coaxial powder feeding nozzle, a workbench and an argon gas cylinder, wherein the industrial control computer is connected with the camera and the laser ranging sensor through cables and is connected with the robot control cabinet through an Ethernet cable, the robot control cabinet is connected with a robot body through a cable, is connected with an I/O (input/output) port of the optical fiber laser through an I/O port and is connected with the powder feeding device through a cable, and the optical fiber laser is connected with the laser light path unit through a conductive optical fiber. The device has high efficiency and good reliability, and the quality of repaired parts is stable.

Description

technical field [0001] The invention belongs to the technical field of laser rapid repair, in particular to a laser rapid repair method and equipment for aluminum alloy guide vane defects. Background technique [0002] Aluminum and aluminum alloys have the advantages of high strength and good corrosion resistance, and are widely used in aerospace, aviation, petrochemical and other industrial fields. As an application of aluminum alloy materials, aluminum alloy blades may suffer from various damages during processing and use, such as point defects, line defects, and block defects. Generally, point and line defects are mainly concentrated on the surface of the blade, while the top surface of the blade is prone to damage. A block defect caused by cavitation occurs. If the above-mentioned defective blade parts are directly scrapped, it will cause a lot of waste. For this reason, experts have proposed various methods for repairing defective blades, such as laser cladding, vacuum...

AI Technical Summary

Problems solved by technology

[0005] At present, the repair process of blade defects is to first fix the blade to be repaired on the workbench through the fixture, and then conduct trial teaching on the area to be repaired by manually operating the numerical control system, and then determine the repair trajectory and repair process parameters, and compile the program, and finally carry out For the actual repair of the blade, the process mainly depends on the operator to judge the trial teaching position. For the same type of defects (such as point defects, line defects, etc.), it must be repeated every time, resulting in low efficiency, low reliability, and stable quality of repair parts Sex difference is the main problem

[0006] At present, laser repairing of blade defects by manual teaching is a common practice. The quality of repairing blades using this method is mainly determined by factors such as the level and experience of the operator. For the repair task of a single small batch of blades, this method is barely competent ; and for large batches, especially for large batches of repair tasks of the same type of blade defects, the problems of this method are more prominent, mainly because of low repair efficiency, poor repair quality stability, and low overall repair reliability. The influence of human factors is relatively large, which is not conducive to mass repair

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