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研究生:張庭裕
研究生(外文):CHANG,TING-YU
論文名稱:SS400低碳鋼銲接後腐蝕及金相之研究
論文名稱(外文):Study on Corrosion and Metallography of SS400 Low Carbon Steel after Welding
指導教授:蕭德慶江家慶江家慶引用關係
指導教授(外文):HSIAO,TE-CHINGCHINA,CHIN-CHIANG
口試委員:蕭德慶江家慶謝作生王星海
口試委員(外文):HSIAO,TE-CHINGCHINA,CHIN-CHIANGTSO,SHENG-HSIEHWANG,SHING-HAI
口試日期:2021-08-25
學位類別:碩士
校院名稱:國立高雄科技大學
系所名稱:機械工程系
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:2021
畢業學年度:109
語文別:中文
論文頁數:96
中文關鍵詞:SS400低碳鋼自動銲接塔弗(Tafel)電化學
外文關鍵詞:SS400 low carbon steelautomatic weldingTafel electrochemistry
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本研究選定以民生產業及基礎建設較為關係密切的SS400低碳鋼,進行鋼材自動銲接後之腐蝕特性的研究分析及金相觀察。實驗流程以SS400低碳鋼為實驗母材,使用機器手臂銲接方式。設定以電流、電壓、速度等3個變數,每個模組做5個試片,共計產生15組不同製程參數之實驗試片,以線切割設備進行試片切割,保留銲道裁切成腐蝕實驗試片及金相組織觀察試片,將腐蝕試片以塔弗(Tafel)電化學方式進行腐蝕速率實驗及分析,再將腐蝕實驗狀況較佳之參數試片進行金相組織觀察,以期分析出銲接參數對銲接後銲道及母材腐蝕速率的差異和影響及金相組織的異同。
實驗結果分析,得證在ph5及ph9溶液腐蝕實驗最佳試片為同一組試片。以日本OTC 機械手臂型號FD V6使用混合氣體對SS400母材銲接,其銲接後腐蝕速率最慢且耐腐蝕性最好的設定參數為:銲接電流:170A、銲接電壓:19V、銲接速度:50 cm/min。此實驗結果可供爾後相關自動化產業,在使用相同銲接設備及母材條件下,考量腐蝕速率及特性之製程參數設定參考。

In this study, SS400 low-carbon steel, which is closely related to civilian production and infrastructure construction, was selected to conduct research and analysis of corrosion characteristics and metallographic observation of steel after automatic welding. The experimental process uses SS400 low steel as the experimental base material, using gas electric welding and robotic welding. Set 3 variables such as welding current, welding voltage, and welding speed as operating variables and control variables, and design 3 modules of 5 test strips, and a total of 15 sets of different manufacturing processes are generated The test specimens of the parameters are cut by wire cutting equipment, and the welded bead is cut into corrosion test specimens and metallographic observation specimens. The corrosion test specimens are subjected to the corrosion rate test by Tafel electrochemical method. And analysis, and then observe the metallographic structure of the parameter specimens with better corrosion test conditions, in order to analyze the difference and influence of the welding parameters on the corrosion rate of the welded bead and base metal after welding, and the similarities and differences of the metallographic structure.
According to the analysis of the experimental results, it is proved that the best test pieces in the corrosion experiment of ph5 and ph9 solutions are the same group of test pieces. The Japanese OTC robot model FD V6 uses mixed gas to weld the base metal of SS400. The setting parameters for the slowest corrosion rate and the best corrosion resistance after welding are: welding current: 170A, welding voltage: 19V, welding speed: 50 cm /min. The results of this experiment can be used as a reference for the relevant automation industry in the future to use the same welding equipment and base metal conditions to consider the corrosion rate and characteristics of the process parameter settings.

目錄
中文摘要
ABSTRACT
誌謝
目錄
表目錄
圖目錄
符號表
第一章 緒論
1.1 研究動機
1.2 研究背景
1.3 研究目的
1.4 論文架構
第二章 基礎理論
2.1腐蝕種類介紹
2.2 電化學腐蝕特性
2.3 電化學實驗與腐蝕理論
2.4 銲接凝固及相變化理論
第三章 實驗步驟及設備
3.1 實驗母材選定
3.2 銲接機械設備及材料
3.3 線切割設備
3.4 塔弗(Tafel)電化學實驗儀器及實驗流程
3.5 金相觀察設備
第四章 實驗結果與分析
4.1 腐蝕特性實驗結果
4.2 ph5溶液腐蝕試片之實驗結果
4.3 ph9溶液腐蝕試片之實驗結果
4.4 ph5溶液腐蝕模組結果分析
4.5 ph9溶液腐蝕模組結果分析
4. 6 金相組織觀察
第五章 結論與未來展望
5.1結論
5.2未來展望
參考文獻

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