Experimental Investigations on the Feeding Force and Its Formation Mechanism During Friction Stir Welding of Aluminum Alloy Using a Novel Dynamometer

使用一嶄新動力計探討鋁合金的摩擦攪拌熔接過程之進給力及其形成機制

李榮宗(Rong-Tsong Lee) ； 劉鑑德(Chien-Te Liu) ； 邱源成(Yuang-Cherng Chiou)

《中國機械工程學刊》 33卷1期 (2012/02) Pp. 11-19

https://doi.org/10.29979/JCSME.201202.0002

摘要

本研究提出一台能量測摩擦攪拌熔接過程之擠壓、夾持以及進給等熔接作用力之嶄新動力計。使用高速鋼材質（SKH51）之熔接工具在不同的工具轉速（400~1600 rpm）及進給速度（5~80 mm/min）之熔接參數下，對鋁合金6061-T6板進行摩擦攪拌熔接的對接實驗，主要探討熔接參數對進給力之影響以及進給力的形成機制。本實驗推導出分別含轉速及進給速度之平均擠壓力、平均進給力以及平均進給係數之經驗公式，此三公式在物理上都受到熔接工具與工件材料之間的溫度所影響。進給力為熔接工具對工件之前進邊與後退邊之摩擦力的差值。進給力遠小於摩擦力。

並列摘要

A novel dynamometer is proposed to measure the time histories of welding forces including the downward, clamping, and feeding forces during friction stir welding (FSW). The FSW experiments involving the butt joining of aluminum alloy 6061-T6 plates are carried out under the welding parameters including the different rotating speeds (400 to 1600 rpm) and feeding speeds (5 to 80 mm/min) with the welding tool of SKH51 high-speed steel to investigate mainly the effects of the welding parameters on the feeding force and the formation mechanism of the feeding force. Empirical equations of the mean downward force, the mean feeding forces and the mean feed coefficient in terms of rotating speed and the feeding speed are derived. The mean downward force, the mean feeding force and the mean feed coefficient are physically influenced by the interface temperature between the tool and the workpiece material. The feeding is the difference between the friction forces, respectively acted on the advancing side and the retreating side of workpiece. The feeding force is much smaller than the friction force.

並列關鍵字

dynamometer ； friction stir welding ； feeding force ； aluminum alloy