A laser remanufacturing method for metal structural parts
A technology of laser remanufacturing and metal structural parts, applied in the directions of additive manufacturing, metal material coating process, coating, etc., can solve the problems of short lifespan, long time-consuming and high manufacturing cost of the workpiece, and achieve the effect of improving the service life
Active Publication Date: 2019-07-02
SHOUGANG CORPORATION
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Problems solved by technology
[0005] The purpose of the present invention is to provide a laser remanufacturing method for metal structural parts, which solves the problems of high manufacturing cost, long time consumption and short life of the workpiece in the traditional manufacturing method
Method used
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Embodiment 1
[0025] The specific steps and parameters are as follows:
[0026] 1. Select any melting point at one end of the metal structure substrate, and start cladding the laser cladding of the first ring on the first layer. The outer side of the first ring should be aligned with the end of the substrate;
[0027] 2. After the laser cladding of the first ring on the first layer is completed, the laser spot moves 2mm along the inner side of the first ring to the other end of the metal structure substrate, and starts to clad the second ring on the first layer Laser cladding, the cladding direction is consistent with the cladding direction of the first ring on the first layer of cladding;
[0028] 3. After the first layer of cladding and the second ring cladding are completed, repeat step 2, and then complete 59 ring claddings until the other end of the substrate, covering from one end to the other end of the substrate surface. During the process, the direction of each laser cladding is c...
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Abstract
The invention discloses a laser remanufacturing method of a metal structural part, which belongs to the technical field of laser rapid prototyping. It includes selecting the melting point at any point at one end of the metal structure substrate, and laser cladding the first ring on the first layer. After completion, the laser spot moves 1 to 2 mm along the inside of the first ring to the other end of the metal structure substrate, and starts laser cladding. Cladding the second ring; repeat the laser cladding steps until the number of cladding passes is proportional to the length of the structural part and then machined; then raise the height of the laser head by 1 to 2mm, and laser cladding the second and third layers layer; finally, the cladding layer of metal structural parts is composed of three layers of laser cladding layers, with a total thickness of 3-5mm; the material of the cladding layer is Co-based metal powder, and the laser cladding parameters used in the steps are consistent with the laser power: 2000~3000kw, spot diameter: 2~3mm, etc. The advantages are anti-corrosion and wear resistance, high hardness and long service life.
Description
technical field [0001] The invention belongs to the technical field of laser rapid prototyping. In particular, it relates to a laser remanufacturing method for metal structural parts. In particular, it relates to a laser remanufacturing method for high-strength metal structural parts. Background technique [0002] In recent years, with the national strategy of "Made in China 2025", metal material 3D printing technology and laser remanufacturing technology have become research hotspots in the field of additive manufacturing. Both metal laser 3D printing technology and remanufacturing technology are emerging manufacturing technologies that discretize and accumulate metal materials layer by layer to produce solid objects or surface layers (usually used for surface modification or repair). It has obvious advantages in the manufacture and remanufacturing of some parts that are difficult to manufacture and repair by traditional manufacturing methods, which can significantly incr...
Claims
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IPC IPC(8): C23C24/10C22C19/07B22F3/105B33Y10/00
CPCC22C19/07C23C24/103B33Y10/00B22F10/00B22F10/25B22F10/36B22F10/366B22F10/50Y02P10/25
Inventor 程四华吕廼冰晁月林柳洋波陈涛孙齐松赵泽杨佳才
Owner SHOUGANG CORPORATION