Plasma Welding Machine (PW)
Plasma arc welding (PAW) is an arc welding process, where a coalescence is produced by the heat generated from a constricted arc formed between a tungsten electrode and water-cooled (constricting) nozzle (non-transferred arc) or between a tungsten electrode and the job (transferred arc). The process uses two inert gases, one forms the arc plasma and the second shields the arc plasma. Plasma Arc Welding (PAW) is an arc welding process similar to GTAW (TIG). The basic difference is in formation of the arc. In GTAW (Gas Tungsten Arc Welding) arc is started between the tungsten electrode and the job in the presence of inert gas. However in case of PAW, arc is initiated between the electrode and the nozzle in the presence of plasma gas and is known as pilot arc. The main Plasma arc is transferred to the job through the orifice of the nozzle which constricts the arc. Key process variables are current types and polarity, DCEN from a CC source is common, AC square-wave is common on Aluminium and magnesium, welding current and pulsing at frequency up to 20khz, gas flow rate (most critical parameter) etc.
Special Features:
- Inverter based DC welding machine capable for welding and brazing.
- Programmable machine having provision for setting all parameters up to 8 jobs.
- Power source having cooling unit and gas cylinder mounted on one trolley.
- Precise, highly stable plasma arc for targeted and concentrated heat generation.
Benefits:
- Welding thickness – Machines capable to weld a wide range of very thin sheets ranging from 100 microns to 5 mm.
- Programmable machine – Machines are fully programmable and capable to save all parameters for 8 jobs.
- Pilot Arc – Pilot arcing system is built in
- Arc stability – PLC based closed loop, capable for perfectly stable arc.
- Pulsing facility available for perfect and smooth welding.
Usage:
- Plasma Welding is used for high-quality joints in aircraft or spaceship development, Process, Chemical and Petroleum industries.
- PAW also finds application in instrumentation products, welding bellows etc and technical institutes for training purposes.
Industries Served:
- Aircraft Manufacturing.
- SpaceShip manufacturing.
- Chemical Plant Manufacturing.
- Piping.
- Boiler.
- Instrumentation.
Spares & Consumables
Spares & Consumables available for the machine:
- Contact Tip.
- Nozzle.
- Ceramic Sleeves.
- Water Cooled Micro Plasma Torch with cable.