Jointmetal hoseGas is heated by an electric arc to produce dissociation, and when it passes through a water-cooled nozzle at high speed, it is compressed, increasing energy density and dissociation degree, forming a plasma arc. The specifications of spherical joint metal hoses are:DN6-DN100

1、 Application of spherical joint metal hose

1Microbeam ion welding

Microbeam ions are commonly used for welding thin sheets (with a thickness of)0.1mm）Welding wire and mesh part. A needle shaped straight arc can minimize the deviation and deformation of the arc. Although equivalentTIGThe arc is more diffuse, but the updated transistorization（TIG）The power supply can generate very stable arcs at low currents.

2Medium current welding

Under the melting method, this method can be chosen for traditional methodsTIGWelding. Its advantages are that it can generate a deeper penetration (willing to use higher plasma airflow) and allow for larger surface contamination, including coating (welding rod in the torch). The main disadvantage is that the welding torch is bulky, making manual welding more difficult. In mechanized welding, more attention should be paid to the maintenance of the welding torch to ensure stable performance.

3Small hole welding

The available advantages are: deep penetration and fast welding speed. andTIGCompared to arc, it can weld through to a thickness of up to10mmWhen using single pass welding technology, the thickness of the sheet is usually limited to6mmInside. The usual method is to use small holes with fillers to ensure the smoothness of the weld section (without tooth edges). Due to the thickness reaching15mmTo use6mmThick blunt edgesVType joint preparation. Double pass welding technology can also be used to automatically generate the first and second weld passes by adding filler wire in the melting mode.

2、 Operation method of spherical joint metal hose

1Microbeam plasma:0.1～15AAt very low welding currents, the columnar arc can still remain stable.

2Medium current:15～200AIn larger ones15～200ACharacteristics of Plasma Arc Process under CurrentTIGThe arc is similar, but due to the compression of the plasma, the arc is more straight. Although increasing the plasma gas flow velocity can increase the depth of the welding pool, there is a risk of mixing air and shielding gas in the turbulent shielding gas flow.

3Small hole plasma: greater than100ABy increasing the welding current and plasma airflow velocity, a powerful plasma beam can be generated, which, like laser or electron beam welding, can form sufficient penetration on the material. During welding, as the welding pool flows, the metal is cut through small holes and forms a weld bead under surface tension. During single pass welding, this process can be used to weld thicker materials (thickness not exceeding)10mmStainless steel).