Method and system for strengthening metal with pulsed laser
A pulsed laser and metal technology, applied in heat treatment process control, heat treatment equipment, manufacturing tools, etc., can solve the problems of reducing the advantages of laser shock strengthening technology, rough surface of parts, and large influence of overall plastic deformation
Active Publication Date: 2019-11-08
GUANGDONG UNIV OF TECH
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Problems solved by technology
The laser shock treatment with a fixed overlap rate has a great influence on the overall plastic deformation of the part surface, which can lead to the surface roughness of the part, especially the increase of the surface waviness and the uneven distribution of the residual stress field, thereby reducing the impact of laser shock strengthening on maintaining the part. Technical advantages in terms of surface quality
For example, if a small overlap rate is used, it will easily lead to unprocessed areas on the surface of the part; and if a large overlap rate is used, it will cause obvious differences in the number of processing times at different positions, resulting in an unbalanced distribution of processing intensity
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[0033] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0034] see below figure 1 , figure 1 It is a flowchart of a method for strengthening metal with a pulsed laser provided in the embodiment of the present application.
[0035] Specific steps can include:
[0036] S101: Select a preset number of circular light spots of the same size to obtain the first layer of light spots; wherein, each of the circu...
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The invention discloses a method for pulse laser strengthening of metals. The method comprises the steps that a predetermined number of round light spots of the same size are selected to obtain a first layer of light spots; each of the round light spots of the first layer of light spots is tangent to the surrounding round light spots, enclosed gaps are the smallest, and the gaps includes first type gaps and second type gaps; round light spots are centered on the center of the first type gaps and distributed to obtain a second layer of light spots; round light spots are centered on the center of the second type gaps and distributed to obtain a third layer of light spots; and the first layer of light spots, the second layer of light spots and the third layer of light spots are sequentially utilized to carry out intensified operation on the surface of parts. According to the method for pulse laser strengthening of the metals, the variation of the surface waviness can be reduced and the uniformity of the residual stress distribution can be enhanced in the process of pulse laser strengthening of the metals. The invention further discloses a system for pulse laser strengthening of the metals, a computer readable storage medium, and a pulse laser strengthening device which obtain the same beneficial effects.
Description
technical field [0001] The invention relates to the field of material strengthening treatment, in particular to a method and system for strengthening metal with pulse laser, a computer-readable storage medium and a pulse laser strengthening device. Background technique [0002] Laser shock is a new technology that uses strong laser-induced shock waves to strengthen metals, which can greatly enhance the durability of metal materials. Compared with the traditional surface strengthening technology, laser shock treatment not only brings better surface strengthening effect, but also has the characteristics of non-contact strengthening, which can significantly reduce the change of roughness caused by strong plastic deformation of the surface. [0003] In the prior art, during the laser shock process, the method of overlapping laser spots is generally adopted to realize the strengthening treatment of the whole area of the outer surface of the part. The laser shock treatment with...
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IPC IPC(8): C21D10/00C21D11/00
CPCC21D10/005C21D11/00
Inventor 卢国鑫张永康
Owner GUANGDONG UNIV OF TECH