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Flexible lamina for laser impact treatment

A laser shock and flexible technology, applied in laser welding equipment, manufacturing tools, welding equipment and other directions, can solve the problems of large dispersion of experimental data, cumbersome operation and installation, poor process stability, etc., to achieve simple production process and good consistency , the thickness of the precise and controllable effect

Inactive Publication Date: 2004-06-02
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in U.S. Patent No. 5,744,781 "Method and Device for Laser Shock Treatment" and U.S. Patent No. 5,741,559 "Laser Peening Process and Apparatus", black paint and water are used as the absorbing layer and the constraining layer, which have complicated operation and installation, poor process stability, and low efficiency. not high disadvantage
Not only is it the root cause of large dispersion and poor reliability of experimental data, but it is also not suitable for practical engineering applications

Method used

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  • Flexible lamina for laser impact treatment
  • Flexible lamina for laser impact treatment
  • Flexible lamina for laser impact treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1, flexible constrained layer I: 45% M, 50% N, 5% P: light transmittance is 95.9%

Embodiment 2

[0026] Example 2, flexible constrained layer II: 50% M, 45% N, 5% P: light transmittance is 94.4%

Embodiment 3

[0027] Example 3, flexible constrained layer III: 55% M, 35% N, 10% P: light transmittance is 88.3%

[0028] The energy absorbing layer that the present invention adopts is 86-1 type black paint coating, can absorb the laser light that wavelength is 1.06um almost completely, has improved the coupling efficiency of energy on the one hand, has changed the cooling process of plasma on the other hand, namely The effect of the former is the improvement of the pressure effect, and the effect of the latter is the increase of the pressure effect time.

[0029] In order to determine the effect of the flexible film composed of constrained layer and energy absorbing layer with different thicknesses on the effect of laser shock treatment, the Figure 3 The display device measures the deformation of the sheet under the action of the same power density: the flexible film adheres to the surface of the sheet, and the sheet is tightened by the pressing plate 4 on the support 6, and the support...

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Abstract

The present invention is applicable to utilization of laser impact wave technique to modify material surface or make cold-plasticity forming of metal plate material. Said invention adopts two groups of GN-521 organic silicone gel solutions with different components and additive, and mixes them according to a certain formula, after said mixture is solidified, a transparent constraining layer for laser is formed, and an energy-absorbing layer of 86-1 type black paint can be sprayed on the constraining layer to form the sticking film integrating energy-absorbing layer and constraining layer into one body and possessing a certain flexibility.

Description

Technical field [0001] The invention relates to the field of laser material processing, in particular to a flexible film for laser shock treatment, which is suitable for modifying the surface of materials or cold plastic forming of metal sheets by using laser shock wave technology. Background technique [0002] Laser shock treatment is the use of high power density (GW / cm 2 magnitude), short pulse (ns magnitude) of strong laser impacts the metal surface, the metal surface absorbs the laser energy to generate explosive vaporization, forms high temperature (>10000K), high pressure (>GPa) plasma, generates a strong shock wave, and uses the shock wave Technology that interacts with materials to develop various uses. With the development of laser technology, laser shock treatment has been widely used in machinery manufacturing industry, aviation industry, automobile industry, shipbuilding industry, nuclear industry, medical industry, bioengineering, electrical appliances a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/06B23K26/18B23K26/356C21D1/09
Inventor 张永康周建忠周明花银群杨继昌肖爱民
Owner JIANGSU UNIV
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