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Mobile laser focus-induced pulse micro arc discharge method and application thereof

A technology of micro-arc discharge and laser pulse, which is applied in the field of laser-induced pulse micro-arc discharge, can solve problems such as high arc pressure, achieve the effects of reducing heat input, improving wear resistance and fatigue performance, and avoiding process cracks

Active Publication Date: 2013-07-10
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the defect that the arc pressure of the existing fixed laser focus induced discharge method is relatively high, and proposes a moving laser focus induced pulse micro-arc discharge method and its application to meet the requirements of material surface strengthening

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  • Mobile laser focus-induced pulse micro arc discharge method and application thereof
  • Mobile laser focus-induced pulse micro arc discharge method and application thereof
  • Mobile laser focus-induced pulse micro arc discharge method and application thereof

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Embodiment Construction

[0018] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0019] The technical solution of the present invention is: use the tool electrode and the workpiece to form an electrode pair, focus the laser pulse on the surface of the workpiece to form a high ionization area, and induce the tool electrode to discharge to the high ionization area; at the same time, the laser focus moves according to the preset frequency and path, and the discharge The point is induced by the high ionization region and moves with the laser focus, so as to realize the controllable and orderly movement of the discharge point. In this way, on the premise of ensuring the set distribution of the discharge position, the arc pressure is controlled by controlling the ...

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Abstract

The invention discloses a mobile laser focus-induced pulse micro arc discharge method and application thereof. According to the method, a tool electrode and a workpiece are used to form an electrode pair; laser pulse is focused on the surface of the workpiece to form a high ionization zone; the tool electrode is induced to discharge towards the high ionization zone; and meanwhile, a laser focus point moves according to the preset frequency and path and a discharge point is induced by the high ionization zone to move along with the laser focus point, so that controllable and ordered motion of the discharge point is realized. According to the method, on the premise of ensuring the setting and distribution of the discharge position, the electric arc pressure is controlled by controlling the scanning area of the laser focus point, so that the relatively-flat workpiece surface is obtained under the same input energy, the later grinding amount is reduced and the effective strengthening depth is increased.

Description

technical field [0001] The invention relates to a laser-induced pulse micro-arc discharge method, in particular to a pulse micro-arc discharge method induced by a moving laser focus and an application thereof. Background technique [0002] Since the laser-induced discharge (LGD) phenomenon was discovered in the 1970s, many people have studied the interaction mechanism between laser plasma and electric field, and the application of this phenomenon in material processing has been reported. For example, using pulsed CO 2 Laser-induced discharge was used to drill holes on aluminum foil, and 532 frequency multiplied YAG laser was used under low pressure to study lettering and machining the inside of workpieces. Drilling and etching use the high peak power of laser-induced discharge to remove materials, and the thermal effect of laser-induced discharge to strengthen the surface of materials is also a research direction. [0003] At present, the existing laser-induced discharge m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H7/38B23H9/04
Inventor 王之桐
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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