アルミニウム合金のパルス MIG 溶接に関する研究

概要

論文の詳細を見る
For MIG welding of thin Aluminium alloys sheets, the thyristor-controlled pulsed-arc welding machines have been conventionally used. By using a transistor-controlled welding device, droplet transfer phenomena caused by various pulse current wave were so examined that the relationships between pulsed current wave and bead appearances, mode and speed of droplet transfer, droplet detachment time and so on were clearly grasped. On constructing a proto-type welder applying this pulse current wave, arc stability against external disturbance had to be discussed. Examining the self-control characteristics of the power source, the enough arc stability is obtained at 2.5v/100A external characteristic. As a result of these studies, control of "one pulse-one droplet" transfer is successfully performed by a new proto-type power source, between 10Hz (52A) and 500Hz (250A). It was confirmed by results of butt welding of 0.8mm thickness sheets and fillet welding in vertical up position of 1.2mm thickness sheets.
社団法人溶接学会の論文
1981-02-05