WELDING METHOD FOR AUTOMATIC WELDING DEVICE TO MANUFACTURE PRESSURE VESSEL AND STEEL PIPE

摘要

The present invention relates to a welding method for an automatic welding device to manufacture a pressure vessel and a steel pipe. The automatic welding device to manufacture the pressure vessel and the steel pipe comprises: a support frame; a horizontal moving frame horizontally moving by being connected to an upper surface of the support frame; a vertical frame fixated to an upper part of the horizontal moving frame to be erect; a guide block vertically moving by being connected to the vertical frame; a horizontal frame moving forwards and backwards by being connected to the guide block; and a welding device unit welding a pressure vessel. More specifically, as the pressure vessel placed on a front surface of the welding device unit to be parallel to a moving distance of the horizontal moving frame is rotated around an axis, a circumference of the pressure vessel is welded. The pressure vessel rotates by a frictional force generated by the rotation of a plurality of rollers supporting a lower part of the pressure vessel by being in contact with the lower surface. According to the present invention, the welding method for an automatic welding device to manufacture the pressure vessel and the steel pipe is able to improve a welding speed, and includes a control function of welding arc using a tracer control motion algorithm. As such, the welding method for an automatic welding device to manufacture the pressure vessel and the steel pipe is able to improve a quality of a welded product, and an accurate welding.;COPYRIGHT KIPO 2016