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Research on Machining Thick Stainless Steel by Wire Electrochemical Micromachining

Author: ZhuBing
Tutor: ZhuZuo
School: Nanjing University of Aeronautics and Astronautics
Course: Mechanical Manufacturing and Automation
Keywords: Electrolytic wire cutting Axial red liquid Go wire Electrolysis product discharge High aspect ratio
CLC: TG662
Type: Master's thesis
Year: 2010
Downloads: 61
Quote: 0
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Abstract


Electrolytic WEDM (Wire ECM) based on the wire as a tool cathode workpiece cutting a new method of electrochemical machining . This method not only inherits the advantages of electrochemical machining , but also its own characteristics : simple wire electrode , combined with the two-dimensional plane motion , simple implementation of complex micro- structure of the processing , to avoid in the the processing preparation stage manufacturing complex forming electrode , short preparation time, and low cost; electrolytic wire cutting tool electrode wire electrode , which makes them easier to process ordinary processing method is difficult processing of the high aspect ratio structures . Electrolytic line cutting thickness 5mm ~ 20mm stainless steel plate as the object of study on how to promote the the electrolyte circulation updated in a long and narrow machining gap , the machining stability smoothly carry out the following work : 1 , electrolytic wire cutting characteristics , propose two the to promote the electrolyte circulation updated measures : axial red liquid and go wire method . Design required to meet the red liquid axial red liquid fixture, steady erosion of the machining gap ; designed to go wire devices , seamless connection copper ring electrode sports wire electrode cause electrolyte disturbances machining gap implementations The electrolyte circulation update . Build electrolytic wire cutting test platform designed electrolyte circulation system , improvement and optimization of the wire electrode platform knife and movement control system . 3 red liquid electrolytic wire cutting technology test research . Determining the main factors affecting the machining precision and stability , and through the micro - slit machining test , analysis of the machining voltage , feed rate , the electrolyte concentration and the red liquid velocity on processing law . Finally, the combination of process parameters using the optimized processing in the 5 mm - thick stainless steel plate a series of slit width of 160μm, the depth to width ratio of up to 30 micro - structure . 4 , go wire electrolytic the wire cutting explore test . First , 5mm thick stainless steel plate was cut test , the processing of the slits uniform, no taper, and the process is stable . Finally, the success of the 10mm and 20mm thick stainless steel plate cutting kerf aspect ratio of 70 . With the increase in the thickness of the workpiece , the feed rate remains unchanged , fully embodies the advantages of electrolytic wire cutting .

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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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