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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 楊宏智(Hong-Tsu Young) | |
dc.contributor.author | Jia-Yu Li | en |
dc.contributor.author | 李佳育 | zh_TW |
dc.date.accessioned | 2021-06-17T01:35:33Z | - |
dc.date.available | 2017-08-04 | |
dc.date.copyright | 2017-08-04 | |
dc.date.issued | 2017 | |
dc.date.submitted | 2017-08-01 | |
dc.identifier.citation | [1] 曾奕愷, “Inconel718 高溫時效相變態行為之研究,” 台灣大學, 民國九十 七年.
[2] 李名言, “鎳基合金材質特性介紹,” 中工高雄會刊 第21 卷 第1 期, 民 國一百零二年. [3] B.J. Bond, and R.L. Kennedy, “Evaluation of Allvac® 718Plus™ Alloy in the Cold Worked and Heat Treated Condition,” Superalloys 718, 625, 706 and Derivatives 2005, ed E.A. Loria, TMS, Warrendale, PA, pp. 203-211, 2005. [4] E. A. Ott, J. Groh, and H. Sizek, “Metals Affordability Initiative: Application of Allvac Alloy 718Plus® for Aircraft Engine Static Structural Components,” Sixth International Special Emphasis Symposium on Superalloys 718, 625, 706 and Derivatives, Edited by E. A. Loria, TMS , Pittsburgh, PA, pp. 35-45, 2005. [5] M. Kunieda, B. Lauwers, K.P. Rajurkar, and B.M. Schumacher, “Advancing EDM through Fundamental Insight into the Process, ” CIRP Annals - Manufacturing Technology, Volume 54, Issue 2, pp. 64-87, 2005. [6] 鄒大鈞譯, “放電加工,” 復漢出版, 2000, pp. 43-44. [7] J.M. Meek, and J.D. Craggs, “ Electrical breakdown of gases, ” Oxford, Clarendon Press, 1953, pp. 80-147. [8] L.C. Lim, L.C. Lee, Y.S. Wong, and H.H. Lu, “Solidification Microstructure of Electrodischarge Machined Surface of Tool Steel, ” Materials Science and Technology. Vol. 7, No. 4, pp. 239-248, 1991. [9] T. Ikai, and K. Hashiguchi, “On the Tool Electrode Material with Low Erosion 84 in the Electric Discharge Machining, ” IEEJ Transactions on Industry Applications(in Japanese). Vol. 108, No. 3, pp. 338-343, 1988. [10] A.O. Monde(Ed.), “ Elements of Rapid Solidicaiton, ” Springer Series in Materials Science 29, 1998, pp. 1-7. [11] H. Xia, M. Kunieda, and N. Nishiwaki, “ Research on Removal Amount Difference between Anode and Cathode in EDM Process, ” International Journal of Engineering and Manufacturing. Vol. 1., pp. 45-52, 1996. [12] H. Xia, H. Hashimoto, M. Kunieda, and N. Nishiwaki, “ Measurement of Energy Distribution in Continuous EDM Process,” Journal of the Japan Society for Precision Engineering. Vol. 62, No. 8, pp. 1141-1145, 1996. [13] N. Mohri, M. Suzuki, and M. Furuya, N. Saito, “Electrode Wear Process in Electrical Discharge Machining,” CIRP Annals - Manufacturing Technology. Vol. 44, Issue 1, pp. 165-168, 1995. [14] M. Kunieda, and T. Kobayashi, “Clarifying mechanism of determining tool electrode wear ratio,” Journal of Materials Processing Technology. Vol. 149, No. 1, pp. 284-288, 2004. [15] 李輝煌, “田口方法-品質管理的原理與實務,” 國立成功大學工程科學 系、高立圖書有限公司, 民國九十七年. [16] 黃俊英, “多變量分析,” 華泰書局, 民國七十四年. [17] D.C. Montgomery, and G.C. Runger, “Applied Statistics and Probability for Engineers : Fifth Edition,” WILEY, 2011. [18] S.S. Rao, “Engineering Optimization-Theory and Practice : Fourth Edition,” WILEY, pp. 380-478, 2009. [19] 張渭川, “放電加工的結構與實用技術,” 全華書局, 民國七十五年, pp. 6- 85 7. [20] Y.Y. Yang, H.S. Fang, and W.G. Huang, “A study on wear resistance of the white layer,” Tribology International. Vol. 29, No. 5, pp. 425-428, 1996. [21] 黃金宏, “雕磨放電加工小面積電極消耗之研究,” 台灣大學, 民國八十九 年. [22] C.J. Luis, I. Puertas, and G. Villa, “Material removal rate and electrode wear study on the EDM of silicon carbide, ” Journal of Materials Processing Technology, Vol. 164, pp. 889-896, 2005. [23] F. Klocke, M. Schwade, A. Klink, and D. Veselovac, “Analysis of material removal rate and electrode wear in sinking EDM roughing strategies using different graphite grades,” Procedia CIRP, Vol. 6, pp. 163-167, 2013. [24] 錢玉峰, “雕磨放電加工-加工速度與加工深度關係研究,” 台灣大學, 民 國九十年. [25] H. Hashimoto, and M. Kunieda, “ Spectroscopic Analysis of Temperature Variation of EDM Arc Plasma,” Journal of The Japan Society of Electrical Machining Engineers, Vol. 31, No. 68, pp. 32-40, 1997. [26] 陳玉華, “放電加工表面裂紋之敏感性研究,” 成功大學, 民國九十二年. [27] 戴子堯, “放電加工之電極尺寸與加工參數對工具鋼表層特性之研究,” 成功大學, 民國九十三年. [28] R. Snoeys , D. Dauw , and J.P. Kruth, “Improved Adaptive Control System for EDM Processes,” CIRP Annals - Manufacturing Technology, Vol. 29, No. 1, pp. 97-101, 1980. [29] Y.S. Tarng, C.M. Tseng, and L.K. Chung, “A fuzzy pulse discriminating system for electrical discharge machining,” International Journal of Machine Tools 86 and Manufacture, Vol. 37, No. 4, pp. 511-522, 1997. [30] S.F. Yu, B.Y. Lee, and W.S. Lin, “Waveform Monitoring of Electric Discharge Machining by Wavelet,” The International Journal of Advanced Manufacturing Technology, Vol. 17, No 5, pp. 339-343, 2001. [31] M. Weck, “Analysis and Adaptive Control of EDM Sinking Process Using the Ignition Delay Time,” CIRP Annals - Manufacturing Technology, Vol. 41, No. 1, pp. 243-246, 1992. [32] B. Bommeli, C. Frei, and A. Ratajski, “ On the influence of mechanical perturbation on the breakdown of a liquid dielectric,” Journal of Electrostatics, Vol. 7, pp. 123-144, 1979. [33] K.T.P. Tee, R. Hosseinnezhad, M. Brandt, and J. Mo, “Pulse Discrimination for Electrical Discharge Machining with Rotating Electrode,” Machining Science and Technology, Vol. 17, No. 2, pp. 292-311, 2013. [34] W.D. Cao, and R. Kennedy, “Role Of Chemistry In 718-Type Alloys- Allvac 718Plus Alloy Development,” Superalloys 2004, pp. 91-99, 2004. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/67514 | - |
dc.description.abstract | 718plus 超鎳基合金,在2005 年由ATI Allvac 公司開發以來,其因為擁有比 Inconel 718 更好的高溫強度,在近年來常作為飛機引擎中燃燒室(Combustor)的 主要材料而被使用著。燃燒室由於長期處在高溫高壓之環境底下運轉,幾何的高 度複雜度及一體成形的需求使得其必須使用成形放電製程進行加工作業。過去在 探討718 合金於放電加工的應用方面已經有相當多的研究,但卻缺乏對於718plus 的文獻探討。 一套完整的成形放電製程,首先會利用小徑深孔放電加工在工件上欲成形部 位通製一小孔,隨後進行線放電加工將其孔穴擴大,才會開始以掏料為主的雕模 粗放電加工使加工部位預成形,最後才會進行雕模精放電來精修加工部位之表面 特性。但由於放電加工乃屬於熱加工製成,故在加工後會再加工區域留下變質層, 因此在放電加工製程結束後,會再加入流體研磨製成將之去除。 本研究之目的在於建立該新式航太材料於雕模放電加工中加工參數與特性 間之關係。首先,探討以加工效率為主的粗放電加工,利用實驗設計手法減少實 驗次數,將實驗結果施以變異數分析從數個參數中找出較顯著者(放電深度、電 流、放電幅及休止幅)來建立迴歸模型以供反應曲面分析其相關性,並將該數學 模型結合最佳化方法找出加工效率較優良之參數。接著,探討以表面特性為考量 的精放電加工,分析顯著參數(電流、放電幅及休止幅)與表面特性間的關聯性。 最後,擷取放電波形以建立放電型態及其他波形特性,探討與電極壽命有關的電 極尺寸與放電訊號(放電型態、零秒延遲放電及平均延遲時間)間的關聯性。 | zh_TW |
dc.description.abstract | 718plus, developed by ATI Allvac company in 2005, is a nickel-based super alloy having higher temperature strength than Inconel 718 and is found cost-effective, and now the material has been utilized for producing combustors. Combustors, a major part of aerospace engine, having complex bore shape and long-term working in high pressure and temperature environment, require seamless process so that EDM is applied. In the past, the studies of EDM with Inconel 718 have been found, but those with alloy 718plus can be hardly traced. The full process of shaping combustors with EDM is: drilling a deep hole on workspace by discharge, reaming by WEDM, preforming (rough-EDM stage) and surface finishing (finish-EDM stage) by die-sink EDM. After EDM process, it usually utilizes abrasive flow machining to remove recast layer remained by EDM (one kind of thermal energy processes) because it is detrimental to mechanical properties. The goal of this thesis is to investigate the relation between operation parameters and processing characteristics in die-sink EDM process. In first stage, efficiency issue of rough-EDM is considered, and DOE (Design of Experiment) is utilized to identify the significant parameters by ANOVA (Analysis of Variance) with minimum experiment times. Then, the regression model is established with those parameters so as to construct reaction plane and optimized results are obtained. In the following finish-EDM, we investigate the relation between the significant parameters and surface characteristics. Finally, the discharge signals in relation to different electrode sizes is analyzed with a view to possibly monitoring the status of electrode. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T01:35:33Z (GMT). No. of bitstreams: 1 ntu-106-R04522702-1.pdf: 4626775 bytes, checksum: e81212b9ac826cd4de651328d0b1a1a1 (MD5) Previous issue date: 2017 | en |
dc.description.tableofcontents | 目錄
口試委員會審定書 ............................................................................................ I 誌謝 .................................................................................................................. II 摘要 ................................................................................................................. IV Abstract ............................................................................................................ V 目錄 ................................................................................................................. VI 圖目錄 .............................................................................................................. X 表目錄 ........................................................................................................... XIII 第1 章 緒論 ............................................................................................... 1 1.1 研究背景.................................................................................................... 1 1.2 研究動機與目的........................................................................................ 5 1.3 本文架構.................................................................................................... 6 第2 章 放電加工及分析原理 ..................................................................... 7 2.1 放電加工.................................................................................................... 7 2.1.1 基本放電型態轉換................................................................................ 8 2.1.2 放電加工製程連續圖解........................................................................ 9 2.1.3 電極消耗探討...................................................................................... 11 2.2 田口方法.................................................................................................. 14 2.2.1 直交表.................................................................................................. 15 2.2.2 訊號雜訊比.......................................................................................... 16 VII 2.2.3 加法模式.............................................................................................. 17 2.3 變異數分析.............................................................................................. 18 2.4 迴歸分析與最佳化方法.......................................................................... 20 2.4.1 迴歸模型.............................................................................................. 20 2.4.2 判定係數與相關係數.......................................................................... 22 2.4.3 最佳化方法.......................................................................................... 23 2.5 小結.......................................................................................................... 27 第3 章 放電加工參數及加工特性探討 ..................................................... 28 3.1 放電加工參數.......................................................................................... 28 3.2 放電加工特性.......................................................................................... 30 3.2.1 材料移除率.......................................................................................... 30 3.2.2 電極消耗率.......................................................................................... 31 3.2.3 表面粗糙度.......................................................................................... 32 3.2.4 再鑄層厚度.......................................................................................... 33 3.3 文獻探討.................................................................................................. 33 3.3.1 加工參數探討文獻.............................................................................. 34 3.3.2 放電訊號偵測探討文獻...................................................................... 35 3.4 小結.......................................................................................................... 38 第4 章 實驗設備及實驗規劃 .................................................................... 39 4.1 實驗設備.................................................................................................. 39 4.1.1 加工設備.............................................................................................. 39 4.1.2 量測設備.............................................................................................. 40 4.1.3 實驗材料.............................................................................................. 42 4.2 實驗參數設計與規劃.............................................................................. 44 VIII 4.2.1 實驗參數表.......................................................................................... 44 4.2.2 加工參數與特性關係之實驗方法及規劃.......................................... 46 4.2.3 訊號偵測與電極尺寸關係之實驗方法及規劃.................................. 47 4.3 小結.......................................................................................................... 52 第5 章 實驗結果及後續分析 .................................................................... 53 5.1 粗放電實驗.............................................................................................. 53 5.1.1 顯著因子分析...................................................................................... 54 5.1.2 迴歸模型的建立及分析...................................................................... 58 5.1.3 反應曲面分析...................................................................................... 61 5.1.4 粗放電優化參數流程之設計.............................................................. 63 5.2 精放電實驗.............................................................................................. 67 5.2.1 精放電之參數設定.............................................................................. 67 5.2.2 電流與放電幅對加工特性之影響結果分析...................................... 68 5.2.3 休止幅對加工特性之影響結果分析.................................................. 75 5.2.4 精放電加工參數與特性相關性統整與判定...................................... 76 5.3 電極尺寸與放電訊號之關係探討.......................................................... 77 5.3.1 放電型態比例...................................................................................... 77 5.3.2 0 秒放電延遲與平均放電延遲時間 .................................................. 79 5.4 小結.......................................................................................................... 80 第6 章 結論與未來展望 ............................................................................ 81 6.1 結論.......................................................................................................... 81 6.2 未來研究方向.......................................................................................... 82 參考資料 ......................................................................................................... 83 IX 附錄 ................................................................................................................. 87 附錄-1 粗放電實驗之材料移除率之實驗數據.............................................. 87 附錄-2 粗放電實驗之優化參數與實驗數據之REWR 對照 .......................... 88 附錄-3 精放電之再鑄層厚度金相圖.............................................................. 90 附錄-4 精放電之參數顯著性分析.................................................................. 91 | |
dc.language.iso | zh-TW | |
dc.title | 新式航太材料於放電加工中之加工特性探討與優化 | zh_TW |
dc.title | Investigations and Improvements of EDM Process
Characteristics for New Generational Aerospace Material | en |
dc.type | Thesis | |
dc.date.schoolyear | 105-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張充鑫(Chong-Sin Jhang),陳德楨(De-Jhen Chen),李啟宇(Ci-Yu Li) | |
dc.subject.keyword | 雕模放電加工,航太材料,實驗設計,加工特性,表面特性,訊號偵測, | zh_TW |
dc.subject.keyword | die-sink EDM,aerospace material,DOE,processing characteristics,surface characteristics,signal detection, | en |
dc.relation.page | 94 | |
dc.identifier.doi | 10.6342/NTU201702413 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2017-08-02 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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