What is meant by Plasma Arc Welding?
What is meant by Plasma Arc Welding?
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Deepakcandyman -
October 26, 2017 at 10:46 AM -
Thread is marked as Resolved.
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It is a similar process to TIG welding but instead of the arc going from electrode to workpiece it is generated inside the nozzle then forced onto the workpiece as a plasma jet of ionized gas creating an autogenous (no filler material) weld . It is a very precise process critical of voltage, current and travel speed settings so is ideal for robot use. You do need a very accurate and repeatable presentation of the parts to be welded or it tends to melt the edges away instead of joining them.
Good explanation here - https://en.wikipedia.org/wiki/Plasma_arc_welding
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There are two methods of plasma-arc welding:
In the transferred-arc method of plasma-arc welding(in pic left side), the workpiece being welded is part of the electrical circuit. The arc transfers from the electrode to the workpiece hence the term transferred.
In the non-transferred arc method of plasma-arc welding(in pic right side), the arc occurs between the electrode and the nozzle and the heat is carried to the workpiece by the plasma gas. This thermal transfer mechanism is similar to that for an oxy-fuel flame. -
Plasma arc welding (PAW) is an arc welding process similar to tungsten welding (GTAW). The arc electrode (usually, but not always tungsten) is formed between the workpiece.
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Vielen Dank für das Teilen der ausgezeichneten Informationen Great Job halten die gute Arbeit