アルミニウム溶接時の溶融金属中における気泡の挙動に関する数値解析
Numerical Simulation of Bubble Behavior in Molten Metal of Aluminum during Laser Welding Process
著者:
周 楓 Qiaofeng ZHOU 小山 和晃 Kazuaki KOYAMA 宮坂 史和 Humikazu MIYASAKA 森 裕章 Hiroaki MORI
発刊日:
公開日:
AluminumBubbleLaser weldingNumerical simulationPorosity
概要
Laser welding is one of useful methods in manufacturing processes. However, in welding processes, porosi ties sometimes occur in weld metal. Therefore, it is demanded to establish the method to predict and sup press porosities to make sound joints. Numerical simulation has been developing and become one of availa ble techniques to make it realized. Even so it’s still very difficult to predict its formation with comp te accuracy. In this study, numerical analysis to simulate the behavior of bubbles moving in molten meta l of aluminum alloy was conducted, in order to predict porosities formed in weld metal. As compared betw een the calculation results for behavior of the bubbles formed in static molten metal and its in-situ ob servation by X-ray transmission, the calculation results were in accordance with the experimental ones.
