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Multi-source laser multi-channel integrated repair method for metal surface

A technology of metal surface and repair method, applied in the direction of metal material coating process, coating, etc., can solve the problem of low efficiency of laser repair technology step-by-step implementation, improve laser repair efficiency, reduce secondary damage, and facilitate automated production Effect

Pending Publication Date: 2020-11-17
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-source laser and multi-channel integrated repair method for metal surfaces, which solves the problem of low efficiency of step-by-step implementation of existing laser repair technology, and realizes the method of laser "washing-repair" integrated operation on the surface of metal parts. Improve surface cleanliness, repair surface damage defects, improve the quality and efficiency of laser repair of metal parts, and reduce equipment loading and procedures in the repair process

Method used

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  • Multi-source laser multi-channel integrated repair method for metal surface
  • Multi-source laser multi-channel integrated repair method for metal surface
  • Multi-source laser multi-channel integrated repair method for metal surface

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Embodiment 1

[0073] According to the method disclosed in the present invention, the oil stain on the surface of the titanium alloy is laser cleaned, and the microscopic appearance and composition of the cleaned titanium alloy surface are tested by using a scanning electron microscope and an energy spectrometer. distributed as figure 2 shown.

Embodiment 2

[0075] According to the method disclosed in the present invention, "laser cleaning-laser polishing" is carried out on the surface of the 316L iron-based alloy for parallel and integrated repair, that is, two laser light sources are used to emit from different lasers, and the surface of the 316L iron-based alloy is respectively treated one after the other. Carry out cleaning and polishing treatment, the cleaning laser is in the front, and the laser polishing is in the back; the average power of the cleaning laser is 300W, the average power of the laser polishing is 500W, the spot distance between the two laser beams is 5mm, and the spot moving speed of the two laser beams is 10mm / s , the sequential scanning time interval of the two laser beams is 1s. The three-dimensional micro-morphology and roughness of the polished 316L iron-based alloy surface are as follows: image 3 As shown, the energy density is 9.43J / cm 2 The roughness is the smallest, indicating that laser polishing ...

Embodiment 3

[0077] According to the method disclosed in the present invention, "carbon deposit cleaning-surface strengthening" is carried out on the surface oil stains of 316L iron-based alloy in parallel and simultaneous integrated repair, that is, two laser light sources are used to emit from different lasers, and the 316L iron-based alloy is treated one after the other. The surface is cleaned and strengthened, the cleaning laser is in front, and the laser shock strengthening is behind; the average power of the cleaning laser is 300W, and the average power of laser shock strengthening is 500W. 5mm / s, the sequential scanning time interval of the two laser beams is 1s; the wavelength of the laser shock intensified laser is 1064nm, the repetition frequency is 6kHz, the laser pulse width is 80ns, the output power is 500W, and the square spot size is 4mm×4mm; The surface micro-morphology and surface stress state of the 316L iron-based alloy after strengthening and repairing are as follows: ...

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Abstract

The invention discloses a multi-source laser multi-channel integrated repair method for a metal surface. The method comprises the following steps of determining the property of a to-be-repaired part;determining the surface state of the to-be-repaired part according to the property of the to-be-repaired part; determining a laser repair path and a repair mode according to the surface state, whereinthe repair mode comprises multi-source laser multi-channel coupling simultaneous parallel operation and multi-source laser multi-channel coupling step-by-step operation; determining optimal technological parameters of a laser cleaning and repair system; and cleaning and repairing the to-be-repaired part through the laser cleaning and repair system according to the laser repair path, the repair mode and the optimal technological parameters. The method solves a problem that the step-by-step implementation efficiency of an existing laser repair technology is low, a method for laser washing and repair integrated operation for the surface of a metal part is achieved, the surface cleanliness is improved, the surface damage defect is repaired, meanwhile, the laser repair quality and efficiency of the metal part are improved, and equipment loading and procedures in the repair process are reduced.

Description

technical field [0001] The invention relates to the field of metal surface repair, in particular to a multi-source laser multi-channel integrated repair method for metal surfaces. Background technique [0002] High-quality repair of metal surface is an important guarantee for equipment performance restoration and reliability service. The surface damage repair of metal parts emphasizes quality and efficiency, and the current repair technology of metal parts has been difficult to meet the current high-quality repair needs. On the one hand, the traditional mechanical / chemical cleaning and repair methods are relatively extensive, which is easy to cause re-damage of the substrate, and the step-by-step implementation of gaps will also lead to re-failure of the substrate or the surface of the repair layer, such as corrosion and oxidation, and the maintenance quality is difficult to guarantee; on the other hand, the traditional Surface cleaning, repair and post-treatment for mainte...

Claims

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Application Information

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IPC IPC(8): C23C24/10B23P6/00
CPCC23C24/103B23P6/00
Inventor 王思捷赵阳王晓明黄艳斐王瑞
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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