What is the basic principle of plasma surfacing (PTA)

       What is the basic principle of plasma surfacing (PTA)
Plasma surfacing uses plasma arc as the heat source. The high temperature generated by the plasma arc is used. The powder feeder supplies powder to the welding gun. The plasma arc rapidly heats the alloy powder and the surface of the substrate and melts and mixes them together.
Plasma surfacing uses plasma arc as the heat source. The high temperature generated by the plasma arc is used. The powder feeder supplies the powder to the welding gun. The plasma arc rapidly heats the alloy powder and the surface of the substrate and melts, mixes, and diffuses together. It follows the welding gun and the workpiece.
After moving, the plasma arc is self-excited and cooled after it leaves, and the liquid alloy gradually solidifies to form a high-performance alloy layer, so as to realize the strengthening and hardening of the surface of the parts. Because the plasma arc has high arc temperature, energy concentration, and stability
Good, low dilution rate, strong controllability of penetration.
After plasma powder surfacing, a fusion interface is formed between the base material and the surfacing material, with high bonding strength and dense surfacing layer structure; using powder as surfacing material can improve the selectivity of alloy design, especially for smooth surfacing of refractory materials
, Improve the wear resistance, high temperature resistance, corrosion resistance and impact resistance of the workpiece!
Features: 1. Using PWM+PFM control technology, stable current, fast speed and precise control. 2. Unique digital IGBT inverter technology, constant current output, and the main components adopt all imported materials. 3. Excellent high-frequency arc ignition to ensure the smoothness of arc starting of the welding machine. 4. Strong ability to resist power grid fluctuations to ensure arc stiffness and arc length. 5. The arc starting, pulse, and base current can be adjusted in a wide range. 6. Programmable control, convenient and flexible operation. 7. The current rise and fall times are adjustable, and the gas delay time is adjustable. 8. Equipped with multiple protection functions, which can effectively reduce welding failures. 9. The digital communication port can realize remote control of welding (optional). Technical advantages: Equipped with plasma surfacing, welding, argon welding/spot welding, multi-functional three-in-one combination. There are two types of structure to choose from: split type and one-piece type. There are three models to choose from: integration, universal and smart. It can be equipped with increased power, refitted with automatic and optimized (customized exclusive) configuration. Easy to operate, simple to maintain, and you can get started in a short time. Application direction: large-area repair and surfacing processing business in offline or online parts.