Plasma Transferred Arc System (PTA) is a high energy, inert gas welding process. Ar is basically used for arc plasma supply, powder transport and molten material shielding. It produces a very high quality deposit offering optimal protection with minimal dilution or deformation of the base material. It is a process that deposits very precise coatings of perfectly controlled alloys on mechanical parts that are subject to intense wear, significantly extending their service life.PTA technology is particularly effective in protection against corrosion, thermal shock and abrasion. A wide range of overlay alloys is available for practically any part. Some alloys are very hard, others are softer with hard abrasion-resistant particles dispersed in a matrix. Certain alloys are made to rebuild a part to a required dimension while others are designed to be a final overlay that protects the work surface.
BENEFITS OF PPW:
- Reduces Cost: Restoring a worn part to "as new" condition generally costs between 20-70% of a brand new replacement part.
- Prolongs Equipment Life: Service life increases of 3 to 10 times are common with properly overlaid parts.
- Reduces Downtime: Parts last longer and fewer shutdowns are required.
- Less Spare Parts Inventory: There is no need to keep numerous spare parts when worn parts can be rebuilt.
Arcraft Plasma has launched a latest PTA welding system with computer control for current , rotation of welding positioner ,setting of oscillator and column and boom . The system controller has a 10 inch touch screen display and facility for storing 99 programs .
PTA finds wide use in industry for Hardfacing , Cladding , Salvaging and Reclamation of worn parts , Protection of parts from corrosion , Repairs and Applications of special material.
