Follow-up laser shock peening processing device and method

A laser shock strengthening and follow-up technology, which is applied in the field of material processing, can solve problems such as water film instability and achieve the effect of efficient laser shock strengthening treatment

Pending Publication Date: 2018-07-10
NINGBO III LASERS TECH CO LTD +1
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  • Description
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Problems solved by technology

Since the absorption tape used in the present invention is not attached to the surface of the workpiece, and the surface is smooth and free of dirt after treatment, the laser shock strengthening treatment process can be completed without pre- and post-processing, and the problem of water film instability is solved at the same time, and high efficiency can be achieved. laser shock peening

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  • Follow-up laser shock peening processing device and method
  • Follow-up laser shock peening processing device and method
  • Follow-up laser shock peening processing device and method

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Embodiment Construction

[0063] The present application is described in detail below in conjunction with the examples, but the present application is not limited to these examples.

[0064] like Figure 3 to Figure 8 As shown, when the follow-up laser shock peening device of the present application works, the laser shock peening device utilizes a short laser pulse (50 nanoseconds in pulse width) and a power density of 2GW / cm 2 The 532nm pulsed laser light passes through the transparent confinement layer (water in this application) and acts on the absorption band on the surface of the workpiece. After the absorption band absorbs the laser energy, it quickly gasifies to form a dense high-temperature, high-pressure plasma, which expands rapidly and forms a shock wave. The shock wave intensity can reach several GPa (10 9 Pa) magnitude, which is much higher than the yield strength of many workpiece materials; the shock wave passes through the absorbing protective layer, acts on the surface of the workpiec...

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Abstract

The invention discloses a light-water coaxial follow-up laser shock peening device. According to the device, a follow-up absorption belt conveying mode is adopted, water with certain pressure is sprayed out through a water spraying device, the absorption belt is tightly attached to a workpiece, the absorption belt is conveyed while laser shock peening processing is carried out along with the rotation of a motor, and then the laser shock peening processing process for the surface of the workpiece can be completed. Due to the facts that the absorption belt is not attached to the surface of the workpiece, and the processed surface is smooth and free of dirt, the laser shock peening processing process can be completed without preprocessing and postprocessing performed, meanwhile, the problem that a water film is unstable is solved, and laser shock peening processing can be carried out at high efficiency. The device comprises a laser input unit, a focusing unit, a protection lens, a belt conveying unit and a sprayer unit. The invention discloses a light-water coaxial follow-up laser shock peening processing method adopting the device.

Description

technical field [0001] The invention belongs to the field of material processing and relates to laser shock strengthening technology, in particular to a novel laser shock strengthening treatment device. Background technique [0002] Laser shock peening technology (Laser Shocking Peening, LSP) is the use of high-energy density, short-pulse-width pulsed laser shock material to generate plasma on the surface of the material, which generates GPa-level shock waves that act on the surface of the material and propagate inward, making the surface of the material Plastic deformation and dislocation structure are generated in a certain area to form residual compressive stress, thereby improving the fatigue strength and corrosion resistance of parts. At present, laser shock strengthening technology has been widely used in aviation, shipbuilding, mechanical engineering and other fields, especially for anti-fatigue treatment of aeroengine blades. [0003] like figure 1 , 2 As shown, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/356B23K26/064B23K26/18B23K26/70
CPCB23K26/064B23K26/18B23K26/356B23K26/702B23K26/70C21D1/09
Inventor 张文武茹浩磊黄亿辉王斌
Owner NINGBO III LASERS TECH CO LTD
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