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題 名 | A356擠壓和重力鑄件的銲接性質研究=Evaluation of the Qualities of Weldment in Squeeze Casting and Gravity Casting of A356 Alloy |
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作 者 | 黃立仁; 關中皓; 施登士; | 書刊名 | 技術學刊 |
卷 期 | 15:2 2000.06[民89.06] |
頁 次 | 頁239-250 |
分類號 | 472.14 |
關鍵詞 | 擠壓鑄件; 重力鑄件; 銲接性; Squeeze casting; Gravity casting; Gas tungsten arc welding; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究利用A356擠壓和重力的鑄件作為銲接的母材,銲接方法採用氣體鎢極電弧銲,所探討的變數有A356不同的製程及熱處理、不同的填料、和保護性氣體的流量大小等對銲接品質的砠響,對熱處理前後施銲對A356鑄件品質的影響,均做完整的討論。研究結果顯示A356的擠壓鑄件不論用何種填料,均會在熔池產生較多的氣孔數:但經T6熱處理後的A356鑄件經銲接後,則熔池的氣孔數會明顯減少。而所應用的填料則以ER5356或ER5556較明顯地降低熔池的氣孔數量和大小,又在銲接時增加保護性氣體的流量至20 liter/min,對降低熔池的氣孔數亦有相同的效果。 |
英文摘要 | Squeeze castings and gravity casting of A356 alloy were fuse-welded by suing the gas tungsten arc welding (GTAW) process. The effects of castings and T6 treatment, filler metals and shielding gas flow rates on the quality of weldments were fully investigated. Experimental results showed that the fusion zone of squeeze casting produced a greater pore number and pore volume than gravity casting. Use of filler metal (ER5356 or ER5556) significantly decreased the pore number and pore volume compared to ER4043 metal filler. The welded fusion zone after T6 treatment was grater than welding as-casted one. Increasing shielding gas flow rate decreased the pore number and pore volume in the fusion zone, which was thus remarkably strengthened. |
本系統中英文摘要資訊取自各篇刊載內容。