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Basic Research on Hybrid Processing of Electrochemical Jet Machining and Laser Beam Machining

Author: LiZuo
Tutor: XuJiaWen
School: Nanjing University of Aeronautics and Astronautics
Course: Mechanical Manufacturing and Automation
Keywords: Laser processing Electrolytic jet machining Composite processing Transmission characteristics Parameter optimization Recast layer
CLC: TG662
Type: Master's thesis
Year: 2010
Downloads: 72
Quote: 1
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Abstract


Electrolysis the jet - laser composite processing technology is a new type of composite processing technology with high surface quality of laser processing of high efficiency and electrolytic jet . The recast layer is characterized by the elimination of the laser processing generated through electrolysis jet machining \strengthened electrolytic jet machining localized removal of material , and the impact accompanied by thermo-chemical and other effects . In this paper, this composite processing technology following research : (1) in-depth study of the transmission characteristics of the laser medium , and mechanical effects of laser processing in air , pure water and neutral salt solution test . The test results show that : a laser acting on the mechanical effect of the target is more than 3 times in the air under the conditions , facilitate removal of the metal melt ; in the short distance from the liquid medium and the laser transmission can be achieved in the industrial salt solution after the fine filter and close to the attenuating effect in pure water . (2) based on the attenuation characteristics of the laser in a neutral salt solution , the principle of the transmission of the laser in the jet and the jet stability principle , combined with the CFD simulation technology ejection coupling cavity body and the nozzle of the flow field characteristic of the fluid dynamics simulation , developed a special electrolytic jet - laser composite processing system . ( 3 ) the use of composite Forming Law of electrolytic jet - the laser composite processing system . First electrolytic jet machining process test , a preliminary study of the influence of various processing parameters on the processing efficiency and the quality of analysis of electrolytic jet machining shaping law ; Secondly, on an experimental basis in the electrolytic jet machining , the pulse electrolysis jet - laser composite processing test results show that : composite machining hole wall has a high surface quality , almost no recast layer and micro-cracks and defects such as heat-affected zone . Confirmed by the theoretical analysis and experimental study , the feasibility of electrolysis the jet - laser composite processing , and provide an experimental basis for the further development of the electrolytic jet - laser hybrid process .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Special machine tools and processing > Electrochemical machining machine tools and processing
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