高精度品質管理のための溶接構造体形状制御に関する検討
Study on Shape Regulation Technique of Weld Structure for Good Quality Control
著者:
小林 真治 Shinji KOBAYASHI 岡野 成威 Shigetaka OKANO 望月 正人 Masahito MOCHIZUKI
発刊日:
公開日:
Angular distortionMeasurement experimentNumerical simulationReverse-side heating
概要
It is known that weld distortion has negative influence on structure integrity. Therefore, it is important for ensuring structure strength and reliability to control weld distortion appropriately. Especially, development of various countermeasures against weld distortion is desirable for emergent repair work in large-scale accident such as earthquakes. As one of useful countermeasure against angular distortion, in-process control welding with reverse-side heating was proposed however validation of the proposed method was not enough. In this study, the reduction of angular distortion by reverse-side heating is numerically investigated and experimentally validated with a focus on the effect of position and intensity of gas heating. As the result, the appropriate gas heating condition for reducing angular distortion effectively is clarified in relation to the highest temperature distribution. It is also shown that angular distortion is completely controlled by reverse-side gas heating.
