A laser-mig arc hybrid welding method for medium and thick plates of pipeline steel
A composite welding and pipeline steel technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of poor weld formation, many welding defects, and high welding stress, so as to reduce welding defects, high welding efficiency, Improved results for weld seam formation
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Embodiment 1
[0029] This embodiment provides a laser-MIG arc hybrid welding method. For X80 pipeline steel, the steel plate size is 200mm (length) × 100mm (width) × 18.4mm (thickness). The hybrid welding system used consists of a 10kW fiber laser and MIG Composition of arc welding mechanism.
[0030] The welded joint is a butt joint, with a single V-shaped groove, the groove angle is 30°, the blunt edge is 8mm, and the groove gap is 0.5mm; according to the performance of the welded steel plate, the filler material is Merit JM with a diameter of φ1.2mm -80 welding wire.
[0031] The laser is in front and the arc is in the back, and the root welding and filling welding are respectively carried out. During the welding process, pure argon is used as the laser shielding gas. The flow rate of pure argon is 25L / min. The included angle is 60°, and the included angle between the laser welding torch and the welding plate is 90°. Set the process parameters of bottom welding as follows: laser power ...
Embodiment 2
[0034] This embodiment provides a laser-MIG arc hybrid welding method. For X100 pipeline steel, the size of the steel plate is 200mm (length) × 100mm (width) × 14.3mm (thickness). The hybrid welding system used consists of a 10kW fiber laser and MIG Composition of arc welding mechanism.
[0035] The welded joint is a butt joint, with a single V-shaped groove, the groove angle is 30°, the blunt edge is 8mm, and the groove gap is 0.5mm; according to the performance of the welded steel plate, the filler material is Merit JM with a diameter of φ1.2mm -80 welding wire.
[0036] The laser is in front and the arc is in the back, and the root welding and filling welding are respectively carried out. During the welding process, pure argon is used as the laser shielding gas. The flow rate of pure argon is 30L / min, and the distance between the MIG welding torch and the welding plate The included angle is 60°, and the included angle between the laser welding torch and the welding plate i...
Embodiment 3
[0039] This embodiment provides a laser-MIG arc hybrid welding method. For X100 pipeline steel, the size of the steel plate is 200mm (length) × 100mm (width) × 18.4mm (thickness). The hybrid welding system used consists of a 10kW fiber laser and MIG Composition of arc welding mechanism.
[0040] The welded joint is a butt joint, with a single V-shaped groove, the groove angle is 30°, the blunt edge is 8mm, and the groove gap is 0.5mm; according to the performance of the welded steel plate, the filler material is Merit JM with a diameter of φ1.2mm -80 welding wire.
[0041] The laser is in front and the arc is in the back, and the root welding and filling welding are respectively carried out. During the welding process, pure argon is used as the laser shielding gas. The flow rate of pure argon is 27L / min. The included angle is 60°, and the included angle between the laser welding torch and the welding plate is 90°. Set the process parameters of bottom welding as follows: lase...
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