Plasma Transferred Arc Powder Welding
Plasma powder surfacing is a welding process that combines plasma arc and powder to deposit highly wear-resistant layers on metal. It improves surface properties and wear behavior.
Physicochemical Mechanism of Action
Plasma powder cladding uses a plasma arc to melt metal powder. The melted powder is applied to the workpiece surface by the arc and hardens immediately. This forms a dense layer with high wear resistance.
Metallurgical Relevance & Welding Risks
This method raises the hardness and wear resistance of the surface, which is especially helpful under high load. If powder is missing or the arc beam is controlled inaccurately, the layer can become incomplete and hurt the result.
Workshop Practice & Instructions
For successful plasma powder cladding, it is important:
• To set the plasma arc correctly (voltage and current).
• To use the powder in the right amount.
• To prepare the workpiece surface clean and smooth.
• To ensure constant movement of the arc beam over the weld zone.