Method and device for thermal-assisted laser peen forming

Abstract

The invention provides a device for thermal-assisted laser peen forming. The device comprises a shot peening laser and a light path part thereof, a heating laser and a light path part thereof, a workpiece clamp control part, a water spraying part and a central control processor part. The central control processor part is connected with the shot peening laser and the light path part thereof, the heating laser and the light path part thereof and the workpiece clamp control part. The shot peening laser and the light path part thereof and the heating laser and the light path part thereof are located on the front face and the back face of a workpiece respectively. The invention further provides a method, adopting the device, for thermal-assisted laser peen forming. According to the device and method, laser-aided heating and laser shot peening are carried out on the two sides of the workpiece respectively at the same time. Due to the fact that part of shot peening area is heated, energy is effectively utilized, and processed materials have good surface property and high-temperature stability; the processing and manufacturing purpose of high-strength high-property plates is effectively achieved, and the requirement of the industry for processing and manufacturing of the materials is met.

Description

technical field [0001] The invention relates to the laser forming technology in the field of material processing, in particular to a heat-assisted laser shot peening forming method and device for metal plates. Background technique [0002] Metal sheets with high strength, high hardness and good surface quality, such as titanium alloys and hard aluminum alloys, are widely used in industry, aerospace and military, and their processing and surface treatment have also attracted attention. Laser peening is a method of non-contact surface treatment. It uses the interaction between the laser and the workpiece to generate a powerful shock wave that impacts the workpiece, causing residual stress on the surface of the workpiece. The surface strength, crack growth resistance, wear resistance, and fatigue resistance of the workpiece Capability is increased, thereby improving the surface properties of the workpiece. Laser peening, developed from laser peening, is a forming process that ...

AI Technical Summary

Problems solved by technology

Its disadvantages are that one is laser peening and heating on the same surface. During the heating process, the absorbing layer is easy to burn out and fall off due to poor temperature resistance, and the effect of the absorbing layer is greatly reduced, thereby reducing the effect of shot peening; the other is glass. As a constrained layer, it is fragile and difficult to clean after processing, and the realization of the process is poor, so it is difficult to apply in actual industrial production; the third is that the overall heating is not conducive to saving energy

Therefore, the device and method proposed in this patent are not suitable for thermally assisted heating of laser shot peening

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