Automatic gas metal arc welding method for butt joint welding and apparatus thereof

摘要

PURPOSE: An automatic gas metal arc welding method for butt joint welding and apparatus thereof are provided for automatizing the welding work of longitudinal reinforcement to improve productivity and workability and insure a welder's safety and enhance welding quality. CONSTITUTION: The automatic gas metal arc welding method for butt joint welding comprises a limit switch unit(10) installed at both end units of the carriage body of a gas metal arc welding device; a sensor unit(20) installed at one side of the carriage body; a slide unit(30) and a dog unit installed at the rail part where the carriage is moved; and a control unit(50) controlling the gas metal arc welding device(100) with the limit switch unit(10) and the dog unit. The gas metal arc welding device(100) for welding a but joint unit of longitudinal reinforcement comprises a straight rail unit(110) installed on the flange surface of the longitudinal reinforcement along with the welding line; a carriage unit(120) where a welding device(100) is moved along with the rail unit(110); and an oscillator unit(130) for oscillating a welding torch, moved by the carriage unit(120).