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題 名 | 利用田口分析法探討鎂合金鎢極氣體電弧重熔銲接特性=Taguchi Method Analysis for Gas Tungsten Arc Welding of AZ61A Magnesium Alloy |
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作 者 | 黃立仁; 張政平; 林吉廷; | 書刊名 | 中州學報 |
卷 期 | 23 民95.06 |
頁 次 | 頁1-12 |
分類號 | 472.14 |
關鍵詞 | 氣體鎢極電弧重熔銲接; AZ61A鎂合金; 田口實驗計劃法; Tungsten inert gas arc welding; TIG; AZ61A Mg-alloy; Taguchi method; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究利用市售AZ6LA鎂合金板材作氣體鎢極電弧重熔銲接,探討其重熔銲接後銲件的機械性質,以及銲接區域之微硬度與顯微組織之變化與銲接參數關係。所調查銲接參數包括交直流、主銲接速度、銲接電流、電流效率、銲弧結束時間、保護氣體流量等,結果針對鎂合金薄板之重熔銲道正面凹陷、銲道背面凸出、銲道裂縫等銲接觀察值特性影響。由於影響銲接之參數眾多,要研究所有的加工參數對銲接特性的影響有實際上的困難,因此在本研究的實驗分析部分,將輔以田口實驗計劃法規劃進行部分的分析,並將實驗所得之數據經由統計學的變異數分析及貢獻度,評估氣體鎢極電弧重熔銲接參數對鎂合金薄板特性影響的顯著程度,並求出各氣體鎢極電弧銲接特性之最佳銲接參數水準組合。經由本研究的結果,對銲道正面凹陷影響最為顯著的加工參數為電流效率 (IE) 及銲弧結束時間(T);對銲道背面凸出影響最為顯著的加工參數為電流效率 (IE) 及銲弧結束時間(T);對銲道裂縫而言交直流電 (CT) 及電流效率 (IE) 是較顯著影響的銲接參數,以提供相關研究學者及工業界參考。 |
英文摘要 | Advantage of strength to weight ratio, easy forming, heat conduction and magnetic shielding properties widely result in using magnesium alloy for 3C products. In this study, AZ61A Mg-alloy was welded by tungsten inert gas arc welding (TIG) to investigate the effects of welding parameters on AZ61A Mg-alloy characteristics. Therefore, parts of experiment were conducted with orthogonal arrays of Taguchi method for economical reason to explore the effects of welding parameters on welding characteristics such as front over melt, end over melt, concave, convex, and crack. Besides, through analysis of variance (ANOVA) and F test of signal to noise (S/N) ratio, the effects of TI G welding parameters such as current type (AC or DC), welding current, welding speed, current efficiency, arc decay time, and shielding gas flow rate on AZ61A weldments characteristics were determined. From this investigation, the relations between AZ61A weldment characteristics and welding parameters of AZ61A via TIG were established. Furthermore, the significant degrees of each parameters affected the weldment characteristics were explored, and the optimal combination levels of the welding parameters on front over melt, end over melt, concave, convex, and crack were determined. |
本系統中英文摘要資訊取自各篇刊載內容。