A method and device for suppressing deformation of medium-thin sheet in laser shock peening
A technology of laser shock strengthening and sheet metal, which is applied in the field of laser processing, can solve the problems of plate deformation without considering the pressure duration and suppression of plate deformation, and achieve the effect of improving laser shock efficiency and suppressing deformation
Active Publication Date: 2021-01-15
JIANGSU UNIV
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Problems solved by technology
The disadvantage of this method is that the plate is only subjected to back pressure during the impact process, and it can only suppress the concave deformation of the plate during the impact process.
The disadvantage of this method is that it does not consider that the increased pressure duration during the laser shock peening process will increase the deformation of the plate and does not suppress the deformation of the plate
Method used
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[0030] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0031] Select 6061-T6 aluminum alloy as the research object, cut the 6061-T6 material into 16mm×16mm×4mm plate samples, grind the surface of the plate with sandpaper from 800 mesh to 2000 mesh step by step, then polish the surface of the sample, and The polished sample was placed in an alcohol solution to clean the surface with an ultrasonic cleaner.
[0032] Paste black tape on the surface of the pretreated sample as the energy absorbing layer 12, and then paste K9 optical glass on the black tape as the constraining layer 5. Then place the plate sample with the energy absorbing layer 12 and the constraining layer 5 on the porous liner 7, and ensure good sealing of the contact surface between the plate 6 and the porous liner 7, and seal the contact surface around with a sealing strip , and then press the sur...
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Abstract
The invention belongs to the technical field of laser processing, and particularly relates to a method and device for restraining medium-thin type panel deformation during laser shock strengthening. Aporous liner plate and an edge pressing block are adopted in the method and device for increasing the panel strength and restraining concave deformation in the impact process, convex deformation in the impact process is restrained through the vacuum negative pressure and atmosphere pressure difference, deformation of a medium-thin type panel in the impact process can be effectively restrained, the laser shock efficiency is improved, and the laser impact strengthening effect is improved.
Description
technical field [0001] The invention belongs to the technical field of laser processing, in particular to a method and device for suppressing the deformation of medium-thin plates through laser shock strengthening, in particular to a device and method for suppressing the deformation of medium-thin plates during the laser shock process and improving the effect of laser shock strengthening . This method is suitable for devices with medium and thin plates with good plasticity and toughness, and which can suppress impact deformation. Background technique [0002] Laser shock peening technology is a new type of surface treatment technology, which utilizes high energy density (GW / cm 2 order), the short pulse (10ns-30ns order) laser impacts the surface of the material, and the plasma is induced on the surface of the material due to the high energy absorbed instantaneously by the absorbing layer. Propagate to the inside of the material, causing plastic deformation and dislocation ...
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IPC IPC(8): C21D10/00
CPCC21D10/005
Inventor 罗开玉陈俊成鲁金忠
Owner JIANGSU UNIV