UVGを利用した水中溶接ユニット

抄録

General underwater-welding has bad affects to welded metals, such as quick cooling and hydrogen mixing. Dry welding is used to avoid these effects in the water. But, dry welding spends much time and money. Therefore, we suggest new types of dry welding, using "Universal Vacuum Gripper (UVG)". In this study, we tried two experiences. First, we tried to make a dry area in the water using UVG. We put the air to the sealed area by UVG, after UVG vacuumed a board in the water. Second, researched what effects are appeared to UVG by welding inside it. We confirmed the UVG’s vacuum performance in the water, before and after welding metal board in UVG at the atmosphere. Comparing with them, we considered the new types of welding is available.