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ARC TYPES IN MIG/MAG WELDING

Views: 1     Author: Site Editor     Publish Time: 2022-06-01      Origin: Site

ARC TYPES IN MIG/MAG WELDING

There are various arc types in MIG/MAG welding. They differ in terms of the level of the amperage. In the low power range the arc is susceptible to short circuits; in the higher power range it is free of short circuits.



DIP TRANSFER ARC

The arc is ignited by brief contact between the wire electrode and the component. This produces a quickly increasing short circuit current, which liquefies the wire electrode and a droplet detaches. After the short circuit, the arc reignites. The dip transfer arc is used in the lower power range for thinner sheets and allows for welding to be carried out in almost any position. The dip transfer arc is also predominantly used in the root pass.



INTERMEDIATE ARC

The intermediate arc changes between short circuits and spray transitions at irregular intervals. This results in more spatter. An effective use of this arc is not possible, and therefore it is best to avoid it.



SPRAY ARC

This arc burns constantly without short circuits in the upper power range and is well suited to the welding of thicker sheets. This means that a high deposition rate and deep penetration are possible.



PULSED ARC

The pulsed arc is made up of a base current phase with a low power and a pulsing current phase with high power without short circuits. This means that almost no spatter is produced. In the pulsing current phase, the welding droplets are detached in a targeted manner via a precisely dosed current pulse.



ROTATING ARC

This arc is even more powerful than the spray arc and is used for thick sheets where a high deposition rate is required. The welding droplet is transferred into the weld pool in a rotating movement. The rotating arc is also referred to as a high performance arc.



COMBINED ARC

This arc consists of a dip transfer arc and a pulsed arc. The necessary penetration and the heat input are generated in the phase of the pulsed arc, while the phase of the dip transfer arc provides for the cooling of the weld pool and makes it easier to manage.


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