How to weld corrugated diaphragm by micro-beam plasma welding machine?
2021-08-27
According to the knowledge of duomu industry, the width and depth of weld are determined by the arc blowing force on the weld pool, and the ion gas flow rate plays a decisive role in the pool capacity Micro plasma welding machine The larger the ion flow, the greater the width and depth of weld pool; On the contrary, if the ion air flow is too large, the capacity will produce cutting effect. Due to the unstable current, too small flow, the penetration ability will be reduced, and the weld surface will be rough, which will reduce the appearance quality of the weld. In girth welding, the weld can be formed through the weld
The ultra-thin wall pipe welded by micro plasma welding machine has been widely used in many industrial departments. It can be used in metal hose, bellows, torsion tube, heat exchanger tube, instrument resonance tube and so on. Sometimes it can also be used to transport various corrosive media under high temperature and high pressure, complex vibration and alternating load. The manufacture of ultra-thin wall tube by micro plasma welding machine is to roll the strip into round pipe and then weld it. This method has the advantages of simple process, high production efficiency and low cost.
The welding bellows made by micro plasma welding machine can design various corrugated sheets according to the use requirements, and can choose large internal and external diameter difference, which opens up a new way for using new elastic materials to manufacture bellows.
Generally, micro plasma welding machine is used to weld the corrugated film. Only when the thickness of the corrugated film is greater than 0.2mm, the low-power TIG welding is used, including the internal and external circular welding. Before the internal and external circular welding, the corrugated film is required to be cleaned to remove the oil stain and oxide film. The cleaned corrugated film should be soaked in anhydrous ethanol and dried or blown dry immediately after being taken out, In the future, it can not be touched by hand, but be clamped with metal pliers.
The fixed device is used to ensure that the corrugated sheet to be welded is concentric with the rotating shaft, adjust the position of the micro plasma welding machine, and then start the arc. After the plasma is stable, shoot the maintenance arc from the welding seam, align the inner diameter of the corrugated film, and start the welding machine. After everything is normal, the welding can be carried out, Observe whether the welded corrugated sheets are eccentric and fit each other well. If the concentricity is not good, the weld will be serrated, the shape is not beautiful, and the sealing is not in place.
Duomu industrial editor reminds us that when using micro plasma welding machine to weld corrugated diaphragm, we should pay attention to: a) tungsten electrode is in good alignment; b) clean the nozzle frequently. The nozzle is the channel of plasma arc. After using for a period of time, some impurities will be left inside, which should be cleaned in time to avoid blockage.
