Electrical discharge machining of titanium alloy (Ti–6Al–4V)

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Electrical discharge machining of titanium alloy (Ti–6Al–4V). 任課教師 : 戴子堯 報告人:蔡雅雯 報告日期: 100.05.23. 大綱. 一、前言 二、實驗方法 三、結果與討論 四、結論. 一、前言. 一、前言. 放電加工是將工件及電極置於絕緣液中,通以適當電流,當電極與工件表面凹凸不平之高點接近至某一間隙時,其電壓增高,而電場強度引起該不平點之絕緣油的局部電離分解,因而產生火花放電,經由放電火花之高熱可將工件材料熔融或汽化而除去 - PowerPoint PPT Presentation

Text of Electrical discharge machining of titanium alloy (Ti–6Al–4V)

  • * Electrical discharge machining of titanium alloy (Ti6Al4V) : 100.05.23

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  • *Ti-6Al-4VSEMEDSXRD

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  • * -Ti-6Al-4V (4.7 mm x 20 mm x 25mm) -Ti-6Al-4V

  • * EDMelectrode holderelectrodespecimensample holder.EDM configuration

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  • * A typical surface after EDM (IP: 12 A; ON: 100 s; electrode material copper).EDS analysis of machined surface, on which the EDS is conducted marked by AX-ray diffraction profiles of Ti6Al4V before machining

  • *X-ray diffraction profiles of Ti6Al4Vafter machining EDM (IP: 25 A; ON: 200 s; electrode material copper).CHCTiC XRD

  • 10-20m*Cross-sectional view of white EDM (IP: 6 A; ON: 100 s; electrode material graphite).

  • * (white layer thickness, WLT)Effect of EDM parameters on average WLT (a) graphite electrode; (b) copper electrode; (c) aluminium electrode.

  • Effect of EDM parameters on surface crack density (() extremely open cracks; () slightly cracks; () no crack).

  • >>(200s)* Effect of EDM parameters on surface roughness of specimens ((a) graphite electrode; (b) copper electrode; (c) aluminium electrode).

  • Effect of EDM parameters on MRR ((a) graphite electrode; (b) copper electrode; (c) aluminium electrode).

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  • *Ti-6Al-4V()TiC

  • *Thanks for your attention

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