A post-treatment method for laser remanufacturing layer surface
A laser remanufacturing, laser technology, applied in the direction of coating, metal material coating process, etc., can solve the problem of affecting the surface finish and tissue strength, unable to strengthen the tissue strength and other problems
Active Publication Date: 2021-02-23
SUZHOU TIANHONG LASER +1
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Problems solved by technology
Limited by the accuracy of the powder feeding position and the feeding amount of the powder feeding equipment, the surface structure of the laser remanufacturing layer has defects such as powder particles and groove textures, which affect the surface finish and tissue strength.
At present, the post-treatment of the surface of the laser remanufacturing layer generally adopts iron pins, car grinding, sandblasting and other treatment methods to achieve a smooth surface and peel off the particle layer, but it cannot strengthen the tissue strength.
Method used
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[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0021] See figure 1 , a method for post-processing the surface of a laser remanufacturing layer according to an embodiment of the present invention, comprising the following steps: providing a substrate 1, the substrate 1 has a laser remanufacturing layer, and the laser light emitted by a fiber laser 2 that uses an optical fiber flexible output laser passes through a beam shaper 3 After the beam is shaped, it enters the laser scanner 4, and then the laser emitted by the laser scanner 4 is focused by the focusing lens 5 onto the surface of the laser remanufacturing layer of the substrate 1 to scan the surface of the laser remanufacturing layer, so that the The surface of t...
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The invention relates to a post-treatment method for the surface of a laser remanufacturing layer, comprising the following steps: providing a substrate, the substrate has a laser remanufacturing layer, and the laser light emitted by a laser is focused on the surface of the laser remanufacturing layer of the substrate through a focusing lens. The surface of the laser remanufacturing layer is scanned so that the surface of the laser remanufacturing layer is remelted and leveled; the scanning includes N scanning steps, the scanning power of the nth scanning step is Pn, and the scanning rate is Vn, the scanning layer depth is Tn, wherein Pn>Pn+1, Vn<Vn+1, Tn>Tn+1, N≥2 and N is a positive integer, n is a positive integer smaller than N. The method for post-processing the surface of the laser remanufacturing layer provided by the present invention is to scan the surface of the laser remanufacturing layer by focusing the laser on the surface of the laser remanufacturing layer of the substrate, so that the surface of the laser remanufacturing layer is remelted and Leveling, so that the surface of the laser remanufacturing layer can achieve the dual effects of surface smoothness and structural strengthening.
Description
technical field [0001] The invention relates to a post-treatment method for the surface of a laser remanufacturing layer, which belongs to the field of laser processing. Background technique [0002] Laser remanufacturing technology, as a post-failure treatment method for industrial moving parts and parts susceptible to chemical corrosion, has more and more advantages in terms of efficiency and cost performance with the development of laser technology. Laser remanufacturing technology generally adopts powder feeding method, using high-energy laser to generate molten pool on the surface of the substrate, metallurgical bonding of metal powder and substrate, and through 3D layered manufacturing, the failed parts can be restored to physical size. Limited by the accuracy of the powder feeding position and the feeding amount of the powder feeding equipment, the surface structure of the laser remanufacturing layer has defects such as powder particles and groove textures, which affe...
Claims
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IPC IPC(8): C23C24/10
Inventor 金朝龙
Owner SUZHOU TIANHONG LASER