Abstract

TIG welding process is applied for the active metal such as aluminum and titanium, also sometimes for overlay welding of superalloy. However the welding speed to be applied is very low because of the unstable bead formed in the region of high current and high welding speed. The present study was carried out to examine the basic phenomena of high speed TIG melt run welding by the 2% Th - W electrode(dia.3.2mm) of various tip shapes.

Keywords

• Tungsten Inert Gas Welding;
• Arc Pressure;
• Melt Run Welding;
• Humping Bead;
• Molten Pool;
• Molten Pool Depression;
• Sharp Electrode Tip;
• Truncated Electrode Tip;
• Plasma Jet;
• Welding Speed

• TIG용접;
• 아크압력;
• 용융주행용접;
• 험핑비드;
• 용융지;
• 용융지 압입;
• 뾰족전극;
• 선단절단 전극;
• 플라즈마젯;
• 용접속도;