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Laser shock enhancement device adopting macromolecular restraint layer

A technology of laser shock strengthening and confinement layer, which is applied in the field of laser processing to achieve the effect of reliable restraint, stable strengthening effect and guaranteeing stability.

Active Publication Date: 2014-12-03
东台城东科技创业园管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a laser shock peening device using a polymer constrained layer to increase the peak pressure of laser shock peening, solve the problem of continuous processing, and ensure that the polymer constrained layer always compresses the absorbing layer during the laser shock process, providing reliable restraint

Method used

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  • Laser shock enhancement device adopting macromolecular restraint layer

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specific Embodiment approach

[0020] The specific implementation is as follows: compressed air 12 enters the nozzle 13 through the air nozzle 4, and is ejected from the nozzle 13, acts on the constrained layer 10, and compresses the constrained layer 10 to the surface of the absorbing layer; the laser 1 sends a pulse laser, and the laser After the beam is focused by the focusing lens 2, it passes through the glass window 3 and the constraining layer 10, and irradiates the surface of the absorbing layer to complete a laser shock treatment; while the laser 1 emits laser pulses, the driving wheel 5 rotates to drive the constraining layer 10 to perform a laser shock treatment. Feed motion, the workpiece 7 is also fed at the same speed. The present invention realizes the pressing of the constrained layer 10 on the surface of the workpiece 7, the replacement of the unused part of the constrained layer 10 with the used part and the continuous implementation of the laser shock strengthening process.

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Abstract

The invention discloses a laser shock enhancement device adopting a macromolecular restraint layer. The laser shock enhancement device comprises a laser device, a focusing lens, a glass window, an air cock, a driving wheel, a pinch roller I, a workpiece, an absorption layer, a pinch roller II, a restrain layer, a driven wheel, compressed air and a spray nozzle, wherein the restraint layer is made of macromolecular materials into strips, and the feeding of the restraint layer can be realized by a feeding device including the driving wheel, the pinch roller I, the pinch roller II and the driven wheel; the surface of the restraint layer is blown and pressed by adopting the high-pressure air cock, so that the restraint layer can be attached to a workpiece with any curve surface shape. By adopting the laser shock enhancement device, the peak pressure in the laser shock enhancement process can be improved, and the continuous laser shock enhancement of metal pieces with any curved surface shape can be realized.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser shock strengthening technology. Background technique [0002] Laser shock peening is a new type of material surface strengthening technology, which can obtain a high-amplitude residual compressive stress layer on the surface of metal parts, greatly improving the fatigue life of the part. Compared with conventional shot peening technology, its residual compressive stress layer is deeper; The principle of laser shock is to use pulsed laser to generate plasma explosion with the absorbing layer in a confined state, which can generate a pressure with an intensity of up to several Gigapascals, which propagates to the workpiece through the absorbing layer, and can generate high-amplitude residual compressive stress on the surface of the workpiece. Due to the protective effect of the absorbing layer, the surface of the workpiece will not be burned by heat. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/09
Inventor 戴峰泽温德平张永康
Owner 东台城东科技创业园管理有限公司
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