To provide a welding apparatus which can selectively perform one-side submerged arc welding for thick steel plates and one-side gas shield arc welding for thin steel plates.
The welding apparatus comprises a backing plate supporting device 14 for bringing a backing copper plate 21 having a backing flux 5rf distributed thereon onto the back surface of a bevel extending in the y-direction; a y travelling welding carriage 3; a welding head base stand 4 which is supported by a z elevating mechanism 53 and an x driving mechanism 52 provided on the carriage 3 and is driven in the x and z directions; a bevel detecting device supported by the base stand; and a profile control means for controlling the base stand to the required x and z position with respect to the bevel based on the detection of the bevel, wherein the base stand supports a filler agent sprinkling device, a gas shield welding torch holding device 61, a front flux sprinkling nozzle, and a plurality of sub-merged welding torches so as to be arranged in a line in the y-direction; and the carriage 3 is provided with a gas shield welding wire 69, a flux hopper 73, and a sub-merged welding wire 72.
KAMI SHOZO
NAGATOMO KAZUO
OYAMA SHIGEO
JPH0852573A | 1996-02-27 | |||
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