A non-single incident angle unequal intensity laser shock processing method

Abstract

The invention discloses a non-single incident angle unequal-intensity laser shock processing method, which belongs to the field of laser shock technology, realizes regional unequal-intensity strengthening treatment of metal parts with complex structures, effectively reduces processing costs, improves strengthening efficiency, and makes components The internal residual compressive stress realizes the uniform distribution of the variable section, including the following steps: according to the thickness, divide the component to be processed into the area with the thickness greater than or equal to the set value and the area with the thickness less than the set value; according to the target processing effect of each area, Determine the laser processing parameters for each area; through the adjustment of the spatial position of the component to be processed and the incident direction of the laser, the different intensity processing of the different processing areas of the component to be processed is realized.

Description

technical field [0001] The invention belongs to the technical field of laser shock, and in particular relates to a laser shock processing method with non-single incident angle and different intensities. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Laser shock technology is especially suitable for strengthening small holes, chamfers, weld seams and grooves. Parts with complex surface structures often have different shape characteristics or failure modes in different regions, which requires different regions to correspond to different laser shock processing intensities, so that the overall comprehensive performance of the material can be improved. Taking the aero-engine blade as an example, different regions of the airfoil have different thickness distributions, which is a typical surface component with variable cross-section thickness. When per...

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Problems solved by technology

[0005] In view of the strong demand for unequal-intensity laser shock strengthening processing of complex structural parts and the low feasibility of unequal-intensity strengthening processing technology in the past, the present invention proposes a non-fixed-angle incident laser shock of unequal intensity based on a variable irradiation area. The strengthening method realizes the regional unequal strength strengthening treatment of complex structural metal parts, effectively reduces the processing cost, improves the strengthening efficiency, and makes the internal residual compressive stress of the component realize the uniform distribution of variable cross-section

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