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Method of high recurrent frequency pulse laser induction electrode directional discharge and application of said method

A laser-induced, pulsed laser technology, applied in the field of surface processing of metal materials, can solve problems such as high texturing speed

Inactive Publication Date: 2006-06-14
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

However, the controllable distribution of texturing adopts single beam (or electron beam) texturing, and its texturing speed is not as fast as that of shot peening and electric spark texturing (often using multiple pairs of electrode discharges).

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  • Method of high recurrent frequency pulse laser induction electrode directional discharge and application of said method
  • Method of high recurrent frequency pulse laser induction electrode directional discharge and application of said method
  • Method of high recurrent frequency pulse laser induction electrode directional discharge and application of said method

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Embodiment Construction

[0025] The method of the present invention for high-repetition pulsed laser to induce electrode directional discharge, irradiates the laser to the surface of the workpiece to be processed, generates plasma plume on the surface of the workpiece, and then the plasma plume acts as a trigger switch to induce discharge of the discharge electrode arranged near the laser irradiation point .

[0026] The principle is as figure 1 As shown, the laser is a high-repetition pulse laser, which is emitted by a laser generator 2, which includes an acousto-optical switch drive source 21, a YAG laser 22, a mirror 23, and a focusing lens 24 connected in sequence. The acousto-optical switch driving source 21 is connected to the control device 4, and the control device is a computer.

[0027] A discharge electrode 3 is arranged near the focal position of the focusing lens 24, and the discharge electrode 3 is connected to a power supply system 1. The power supply system 1 is a set of pulsed fast charg...

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Abstract

A method for inducing the directional discharge of electrode by the pulse laser at high repeat frequency features that after the workpiece to be machined and the discharging electrode are connected respectively to two poles of pulse power supply, the high-repeat-frequency pulse laser generated by laser generator is used to radiate on the surface of said workpiece and the plasma plume is generated at the radiated dot, which can induce the electrode to discharge toward the dot at high frequency. Its application is also disclosed.

Description

Technical field [0001] The invention relates to a method for surface processing of metal materials, in particular to a method for inducing directional discharge of electrodes by a high-repetition pulse laser and the application of the method. Background technique [0002] The surface of high-quality cold-rolled steel sheet requires a certain degree of roughness to improve the formability and coating performance of the steel sheet. To produce high-quality cold-rolled sheet, the surface of the work roll of the rolling mill must first be textured, and then the rolling mill uses the texturing roll to roll out the cold-rolled texturing sheet with the required roughness and morphology. Currently, roll texturing technologies include shot peening (SBT), electric discharge texturing (EDT), laser texturing (LT) and electron beam texturing (EBT). Shot peening is the use of compressed air to spray hard steel grit onto the surface of the roll at high speed, and the kinetic energy impact of th...

Claims

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Application Information

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IPC IPC(8): B23H7/38B23H9/04
Inventor 杨明江王之桐李正阳彭林华韩延良
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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