Laser remanufacturing method for metal structural part
A metal structural parts, laser remanufacturing technology, applied in the direction of additive manufacturing, metal material coating process, coating, etc., can solve the problems of short life of the workpiece, long time consumption, high manufacturing cost, etc., and achieve the effect of improving the service life
Active Publication Date: 2017-05-17
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 provides a laser remanufacturing method for a metal structural part and belongs to the technical field of laser rapid forming. The laser remanufacturing method comprises the steps that an initial melting point is selected from any point at one end of a metal structural base material, laser cladding is conducted on a first line of circular ring of a first layer, and after finishing, a laser spot moves towards the other end of the metal structural base material by 1-2 mm along the inner side of the first circular ring, and laser cladding of a second line of circular ring is started; the laser cladding steps are conducted repeatedly until the amount of cladding lines is in direct proportion to the length of the structural part, and then machining is conducted; then the height of a laser head is increased by 1-2 mm, laser cladding is conducted on a second layer and a third layer; and finally the three laser cladding layers form a cladding layer of the metal structural part, the total thickness of the cladding layer is 3-5 mm. A cladding layer material is Co-based metal powder, laser cladding parameters used in the steps are consistent, laser power is 2000-3000 kw, and the diameter of each laser spot is 2-3 mm. The laser remanufacturing method has the advantages of corrosion resistance, abrasion 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