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研究生:洪偉智
研究生(外文):WEI-JHIH,HONG
論文名稱:低碳鉻鉬合金鋼放電加工特性之參數最佳化研究
論文名稱(外文):Optimization of Electrical Discharge Machining Parameters for SCM415 Steel
指導教授:黃立仁黃立仁引用關係
指導教授(外文):Lih Ren,Hwang
口試委員:朱正民
口試委員(外文):Ju Jeng Jeng Min
口試日期:2013-06-10
學位類別:碩士
校院名稱:中州科技大學
系所名稱:工程技術研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2013
畢業學年度:101
語文別:中文
論文頁數:63
中文關鍵詞:放電加工低碳鉻鉬合金鋼田口實驗計劃法
外文關鍵詞:EDMSCM415 steelTaguchi method
相關次數:
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本研究係利用雕模放電加工機對低碳鉻鉬合金鋼(SCM415)進行放電加工,
實驗主要目的在分析放電加工參數對低碳鉻鉬合金鋼加工特性的影響。實驗中為
有效地了解放電加工主要參數對低碳鉻鉬合金鋼進行放電加工時材料去除率
(MRR)、電極消耗率(EWR)、相對電極消耗率比(REWR)及表面粗糙度(Ra)等
加工特性的影響,低碳鉻鉬合金鋼進行放電加工時,材料去除率會隨著放電電流
及脈衝時間的時間而逐漸增大,脈衝時間大約在400s 時達到最大值,持續增加
卻反而呈下降趨勢。而電極消耗率會隨著放電電流的增加有逐漸變大的現象,並
且在各放電電流的加工條件下,會隨脈衝時間的增加而逐漸降低。又加工表面的
粗糙度隨著隨著放電電流的增加而變粗糙,且隨著脈衝時間的增加而呈現下降趨
勢。
部分的實驗將輔以田口實驗計劃法(Taguchi methodology)之直交表規劃實
驗,藉由統計方法中之變異數分析及貢獻度,探討低碳鉻鉬合金鋼放電加工中放
電電流(A)、脈衝時間(ON)、伺服間隙(Gap)和無負荷電壓(V)等四個主要的加
工參數對放電加工特性的影響與關係。並評估放電加工參數對加工特性之實驗觀
察值產生影響的顯著程度,以及求出各加工特性之最佳加工參數組合水準值,以
提供工業界及相關研究工作者參考。
In this study, SCM415 steel was machined by electrical discharge machining
(EDM) to investigate the effects of machining parameters on machining
characteristics. Therefore, parts of experiment were conducted with orthogonal arrays
of Taguchi method for economically to explore the machining parameters on
machining characteristics such as material removal rate (MRR), electrode wear rate
(EWR), and surface roughness. Besides, through analysis of variance (ANOVA) and
F test of signal to noise (S/N) ratio, the effects of machining parameters such as peak
current (A), pulse duration (ON), Servo Gap (Gap), and no load voltage (V) on
machining characteristics were determined. From this investigation, the relations
between machining characteristics and machining parameters of SCM415 steel via
EDM’d parameters were established. Furthermore, the significant degree of each
parameters affected the machining characteristics were explored, and the optimal
combination levels of the machining parameters on MRR, EWR, and surface
roughness was determined. Moreover, the experimental results could be applied in
industrial applications and academic researches.
中文摘要
英文摘要
目錄
圖目錄
表目錄
第一章 緒論
1-1 研究動機
1-2 研究目的
第二章 文獻回顧
2-1 鉻鉬合金鋼介紹
2-2 放電加工原理簡介
2-3 放電加工參數
2-4 放電加工特性
2-5 放電極性對積碳影響
2-6 放電加工積碳影響
2-7 放電加工表面缺陷
第三章 實驗方法與步驟
3-1 實驗材料
3-2 實驗設備
3-3 實驗加工條件
3-4 加工特性量測與金相觀察
3-5 田口實驗計畫法的步驟
第四章 結果與討論
4-1材料去除率
4-2電極消耗率
4-3表面粗糙度
4-4 放電表面刻痕
4-5 田口實驗計畫法的分析
4-5-1 材料去除率之分析
4-5-2 電極消耗率之分析
4-5-3 表面粗糙度之分析
五、結論
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