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博碩士論文 etd-0727114-114242 詳細資訊
Title page for etd-0727114-114242
論文名稱
Title
鐵芯銲接方法之研究
Studies on the welding method of ferrite core
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
83
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2014-07-28
繳交日期
Date of Submission
2014-08-27
關鍵字
Keywords
鋅圓棒、摩擦塗層法、鐵芯、塗層
Friction surfacing, Zinc rod, Ferrite core, Coating layer
統計
Statistics
本論文已被瀏覽 5682 次,被下載 51
The thesis/dissertation has been browsed 5682 times, has been downloaded 51 times.
中文摘要
本研究首先使用各種銲接工具(碳化鎢、高速鋼、A6061鋁及鋅)對單片鐵芯進行摩擦攪拌銲接實驗,探討鐵芯銲接之可行性。結果顯示鐵芯會因局部受熱而破裂,其局部破裂溫度約為200 ℃。
接著,為防止鐵芯局部受熱破裂,使用加熱塊對鐵芯進行全面加熱。銲接工具選用較低熔點之鋅圓棒,以摩擦塗層法對鐵芯進行點銲實驗。在正向負荷(55~118 N)、主軸轉速(1800~2550 rpm)、銲接時間(1~5分鐘)及鐵芯表面加熱溫度230 ℃的操作條件下,探討鐵芯表面上的塗層之面積、表面均勻性及拉伸破壞力。
由結果顯示,塗層在較輕之正向負荷且低轉速的條件下,無法形成。隨著正向負荷且轉速之增加,塗層逐漸均勻形成。在正向負荷118 N以上時,鐵芯發生破裂。增加正向負荷較增加主軸轉速更有效提升塗層之面積、均勻性以及拉伸破壞力。由實驗結果建立了最佳銲接條件的區域。
最後,選取具有最佳的塗層表面均勻和拉伸破壞力之銲接條件,成功地完成實體變壓器之銲接。
Abstract
This study first, friction stir welding was performed using a variety of welding tools (tungsten carbide, high-speed steel, A6061 aluminum and zinc) for single the ferrite core to explore the feasibility on welding of the ferrite core. The results show that the ferrite core was ruptured due to local heating, its partial rupture temperature about 200 ℃.
Secondly, in order to prevent rupture of the ferrite core due to local heating, using a heating block for full heating the ferrite core. Welding tool was selected a lower melting point of zinc rod and spot welding experiments of the ferrite core is performed using a method of friction surfacing. Under different operating conditions, such as the normal load (55~118 N), the rotation speed (1800~2550 rpm), the welding time (1~5 minutes), and the 230 ℃ heating temperature of ferrite core surface, the area, surface uniformity and tensile fracture load of coating layer on the surface of ferrite core were investigated.
The results show that the coating layer was not formed under the lighter normal load and lower rotation speed. The coating layer was uniformly formed with increasing the normal load and rotation speed. However, the ferrite core was ruptured when the normal load was larger than 118 N. Increase the normal load rather than the rotation speed could effectively increase the area, surface uniformity and tensile fracture load of coating layer. The region of optimal welding conditions was established according the experimental results.
Finally, according to the experimental results of a spot welding, an entity operating conditions was selected so that its surface coating is uniform with better tensile failure load to weld the transformer successfully.
目次 Table of Contents
論文審定書 i
誌謝 ii
摘要 iii
Abstract iv
總目錄 v
圖次 viii
表次 xiii
第一章 緒論 1
1.1 前言 1
1.1.1 摩擦塗層法介紹 3
1.2 文獻回顧 4
1.2.1 陶瓷材料之摩擦銲接 4
1.2.2 摩擦塗層法 7
1.3 研究動機 12
1.4 研究目的 13
1.5 本論文架構 13
第二章 實驗設備與實驗方法 14
2.1 實驗設備 14
2.1.1 高速主軸與冷卻系統 15
2.1.2 工作台與進給系統 15
2.1.3 氣壓系統 15
2.2 實驗試片之材料特性與形狀 16
2.3 實驗治具及加熱塊之材料特性 17
2.4 銲接工具之材料特性與形狀 19
2.5 鑽石磨棒之材料特性與形狀 20
2.6 實驗方法 20
2.6.1 實驗參數規劃 20
2.6.2 銲接位置 21
2.6.3 實驗步驟 22
2.7 塗層面積之量測 23
2.8 塗層重量之量測 23
2.9 平均塗層厚度之計算 24
2.10 銲點之拉伸破壞試驗 24
2.11 試片表面溫度之校正 26
2.12 實驗流程 28
第三章 實驗結果與討論 29
3.1 前導實驗 29
3.1.1 使用碳化鎢及高速鋼工具對單片鐵芯進行摩擦攪拌銲接 29
3.1.2 使用碳化鎢工具對低溫冷卻的單片鐵芯進行摩擦攪拌銲接 33
3.1.3 使用A6061鋁及鋅圓棒對單片鐵芯進行摩擦塗層 34
3.1.4 對工具及鐵芯之接觸界面進行加熱 36
3.1.5 對鐵芯進行全面加熱及局部加熱 38
3.1.6 使用鋅圓棒對高溫加熱的單片鐵芯進行摩擦塗層 40
3.1.7 使用鋅圓棒對具有磨槽的單片鐵芯進行摩擦塗層 42
3.2 鐵芯之銲接 44
3.2.1 時間效應 45
3.2.2 負荷效應 48
3.2.3 轉速效應 52
3.2.4 塗層面積以及塗層拉伸破壞力的等高線分佈 56
3.2.5 破斷面SEM之觀察 61
3.2.6 實體變壓器的銲接 61
第四章 結論與未來展望 64
4.1 前導實驗結論 64
4.2 鐵芯銲接結論 65
4.3 未來展望 65
參考文獻 66
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