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Laser impact treating method and apparatus with ice as constraint layer

A technology of laser shock and confinement layer, which is applied in laser welding equipment, manufacturing tools, welding equipment and other directions to achieve the effect of good confinement, low cost and convenient preparation

Inactive Publication Date: 2005-04-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to use a new material as the constraining layer to solve the defects of the existing constraining layer

Method used

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  • Laser impact treating method and apparatus with ice as constraint layer
  • Laser impact treating method and apparatus with ice as constraint layer
  • Laser impact treating method and apparatus with ice as constraint layer

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Experimental program
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Embodiment Construction

[0025] Such as figure 1 As shown, the positioning reference seat 7 is placed in the laser optical path system 1, and the optical path is adjusted. Put the impacted workpiece 5 coated with the energy absorbing layer 9 inside the fixture base 6, rotate the screw briquetting block 3 to the required position, and be used to control the height of the ice layer. Below the bottom of the screw press block 3. Put the water-injected fixture base 6 into the positioning reference seat 7, unscrew the screw press block 3, and then use the refrigeration system 2 to blow high-pressure nitrogen into the impacted workpiece 5, and quickly form an ice-constrained layer of required thickness on the surface of the workpiece 4. Generally, the thickness of the ice confinement layer 4 is controlled within 10mm, and the temperature of the ice is controlled at about -7°C. The jig base 6, the impacted workpiece 5 and the ice confinement layer 4 are integrated when ice is prepared. Screw on the screw b...

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Abstract

The present invention is laser impact treating method and apparatus with ice as constraint layer and capable of being used in industrial production. The present invention features that ice is used as constraint layer and that the apparatus has refrigerating system for forming the constraint ice layer, spiral pressing block for constraining the ice layer and locating reference seat for correcting light path. The restraining ice layer and the workpiece are combined tightly to make the sample is well constrained in both axial direction and radial direction. The present invention can realize good laser impact owing to that the ice has less energy absorption and thus high synergistic effect. The present invention can constrain well the sample with complicated surface, and the ice is easy to treated after machining. The present invention is safe, can realize impact in several points and for several times, and is low in cost and convenient.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing and laser application, in particular to a laser shock treatment method and device using ice as a constrained layer. Background technique [0002] Laser Shock Processing (LSP) is a promising processing method based on the interaction of shock waves induced by high-energy short-pulse lasers with materials. This technology has been widely used in mechanical engineering, aerospace, microelectronics, military and other industries. Currently, this technology is mainly used in material modification, impact forming, and non-destructive testing. [0003] The confinement layer in laser shock treatment technology refers to a layer of transparent (good penetration to laser wavelength) material covering the surface of the impacted material, which constrains the laser-induced shock wave, thereby effectively increasing the impact of the shock wave Time and force of action on impacted material. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/06B23K26/18C21D10/00
Inventor 张永康葛涛殷苏民任旭东冯爱新周建忠张雷洪左敦稳
Owner JIANGSU UNIV
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