Following-type laser shocking peening treatment device

Abstract

The invention discloses a following-type laser shocking peening device. The following-type laser shocking peening device is characterized in that the following-type laser shocking peening device comprises a light path input module, a band conveying module, a focusing module and a water spraying module; one end of the light path input module is connected with and introduces a light source, the other end of the light path input module is connected with the focusing module, and light paths of the light path input module and the focusing module communicate; the other end of the focusing module isconnected with the water spraying module; the band conveying module comprises a motor, a transmission mechanism and an absorption band; and the motor drives the absorption band to move through the transmission mechanism, and the absorption band penetrates through a water column which is sprayed by the water spraying module. According to the following-type laser shocking peening device, the following-type absorption band conveying mode is adopted, and the advantage that laser shocking peening treatment is conducted in high order and high efficiency modes is achieved.

Description

technical field [0001] The invention belongs to the field of material processing and relates to laser shock strengthening technology, in particular to a follow-up laser shock strengthening treatment system for the surfaces of workpieces with various complex shapes. Background technique [0002] Laser shock peening technology (Laser Shocking Peening, LSP) is the use of high energy density (GW / cm 2 magnitude), short pulse (10-30ns magnitude) pulse laser impacts the material, and generates intense laser-induced plasma on the surface of the material. The GPa-level shock wave generated by the blasting acts on the surface of the material and propagates to the inside, causing plastic deformation and complex dislocation structure in a certain area of ​​the material surface, forming a large residual compressive stress, and improving the fatigue strength and corrosion resistance of the parts. At present, this technology has been widely used in various industries such as mechanical ma...

AI Technical Summary

Problems solved by technology

Commonly used constrained layer materials include quartz, glass, flexible membranes, and water, among which water is the most widely used because of its low cost, good flexibility, no residue due to fragmentation, and strong adaptability to the surface of parts with complex shapes. , but it has a major disadvantage that the stiffness of the water layer is insufficient, making it difficult to provide a stable constrained layer

Conventional laser shock strengthening treatment is in the form of pasting metal foil or black tape on the surface of the workpiece or coating special black paint. The advantage of coating black paint is that it has good adhesion to various irregular surfaces. Finally, it needs to wait for it to dry before applying the constraining layer for impact strengthening, and the production efficiency is low; if aluminum foil is used for lamination, the adhesion to chamfers and irregular surfaces is not good, which affects the strengthening quality

After the workpiece is processed, it is necessary to find a way to remove the foil or tape on the surface of the workpiece or to apply special black paint, which is time-consuming and laborious, and it is difficult to achieve large-scale and high-efficiency production and application, which hinders the process of industrialization

[0005] At present, the development direction at home and abroad is to develop water-soluble coatings. After the coating is sprayed (pre-treatment), impact strengthening can be carried out immediately without drying. After the treatment, the coating can be removed with high-pressure water (post-treatment). There is also the problem of insufficient processing efficiency.

Images