Spiral submerged arc welded steel pipe way; before tilting intermittent production; line speed, 0.5–3m / min; welding speed, 0.5–3m / min. Units from the open-book machine, straightening machine, centering device, hydraulic shears, milling welding, cutting discs, milling machine, plate surface cleaning equipment, the delivery machine, plate edge pre-bending equipment, molding machines, internal welding, outside welding, flash, set aside, pour slag, welding, flat head chamfering, hydrostatic testing, product testing, collecting oil composition. Spiral submerged arc welding pipe whole process is as follows:
Principle Spiral Pipe SAW: Submerged arc welding is performed by arc welding of heat energy, and manual arc welding is different: submerged arc welding wire is bare, no paint above, submerged arc flux is to be laid in advance welding Department, submerged arc welding wire extends into the flux, the arc is burning in flux. Wire contact with the workpiece, press the start button is pressed after a moment, the wire and the workpiece is energized, the wire Withdrawing arc ignited at the welding carriage forward, continuous wire to transport, maintain the arc burns at the solder layer, below the arc forming a weld pool. Arc around the solder melts to form a cavity, the cavity and the pool continues to advance, and the pool behind the metal solidifies to form a continuous weld. Because this process is carried out in a flux, so we can not see with the naked eye. By means of X-ray photography can be seen.
Since spiral submerged arc welding steel pipe welding technology, so high production efficiency; produce less auxiliary time, saving time change electrode; welding conditions clean and free of spatter, saves clean-up time; high weld quality. Spiral Pipe factory for delivery to provide the necessary conditions so that large spiral pipe production time is guaranteed, so it is widely used.