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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/67649

    Title: 應用微量流動電解液於電化學線放電加工石英玻璃之研究;Study of Wire Electrochemical Discharge Machining (WECDM) of Quartz Glass with Titrated Electrolyte Flow
    Authors: 郭寬淵;Kuo,Kuan-yuan
    Contributors: 機械工程學系
    Keywords: WECDM;微溝槽;石英玻璃;滴定電解液;表面粗糙度;WECDM;Micro slit;Quartz glass;droplet titration;Surface Roughness
    Date: 2015-06-25
    Issue Date: 2015-07-31 00:59:38 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 石英具有優異性質,但其硬脆特性,傳統加工方式很難在效率與精度二者兼顧,電化學放電加工是以高溫熔融並且蝕刻輔助加工,相當適合於石英材料,WECDM加工系統內絕緣氣膜結構控制不易及加工區域內電解液循環困難,因此,探討WECDM加工機制,開發新加工方式及改善微溝槽表面品質為本論文研究主題。
    ;Quartz has excellent properties, but its brittleness property results in the difficulty of balance between efficiency and precision for traditional machining method. ECDM aids in machining with high temperature fusion and etching, and is very appropriate for quartz material. In WECDM machining system, uneasy control of insulation gas film structure and difficult electrolyte circulation in machining zone. Therefore, thesis topic is to explore WECDM machining mechanisms, development new methods and improve the micro slit surface quality.
    First, investigate the flow of electrolyte influence on the processing of quartz glass, adding graphite powder or silicon carbide powder of composite processing methods to improve the processing efficiency and accuracy. From experimental results, the surface roughness value for electrolyte WECDM machining without adding any powder under the same condition is Ra=1.13μm, while the surface roughness may achieve Ra=0.36μm as 0.4wt% of graphite is added into electrolyte . The improvement rate is 68%. As 5wt% of silicon carbide is added into electrolyte, the surface roughness can achieve Ra=0.22μm, that is, the improvement rate is 80%. Furthermore, electrolyte is used very few under the best appropriate condition. It is proved that the utilization of graphite or silicon carbide characteristics for local machining of quartz glass in titration electrolyte is advantageous of improving surface quality effectively, reducing environmental pollution, lowering cost, and achieving one-time machining to reduce machining procedures.
    Appears in Collections:[機械工程研究所] 博碩士論文

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