Plasma Arc welding is a process which is very similar to TIG welding. It is a development of the TIG welding, which is designed to increase productivity.

Welding has been there for nearly thousand years and arc welding was developed over 100 years, but plasma arc welding came into existence since 1957.

Plasma is a mixture of positive ions, electrons and neutral gas molecules. Plasma arc welding is similar to other types of arc welding. But in case of plasma arc welding, electrode is inserted into a small nozzle. The major advantage of plasma arc method was the precision welds that could be made on thinner metals. Plasma Arc welding is the welding process utilizing heat generated by a constricted arc struck between a tungsten non-consumable electrode and either the work piece (transferred arc process) or water cooled constricting nozzle (non-transferred arc process).

Transferred arc process can be used for high speed welding and cutting of Ceramics, steels, Aluminum, alloys, copper alloys, Titanium alloys and Nickel alloys.

Plasma welding machines can be operated either manually or automatically. These produce straight and thin welds. Plasma arc welding remains one of the most economical and practical welding methods.

Benefits of Plasma arc welding are as follows:

• High welding rate,
• High penetrating capability and requires less operator skill.

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Tags: arc welding, plasma arc welding