Plasma radiation intensity
Plasma arc radiation intensity measures the strength of emitted electromagnetic waves in an arc. It affects weld quality and the material's microstructure.
Physical-Chemical Mechanism of Action
Plasma radiation intensity refers to the emission of electromagnetic waves in an arc. These waves include the visible, ultraviolet, and infrared ranges. The higher the intensity, the more energy is delivered to the workpiece.
Metallurgical Relevance & Risks in Welding
High plasma radiation intensity can lead to rapid cooling, which coarsens the material's grain structure and reduces its toughness. At the same time, it can cause hot cracking or fusion issues if the energy is too high. On the other hand, too low intensity can result in insufficient weld formation and lack of bonding.
Workshop Practice & Operating Instructions
For optimal weld quality, set the plasma radiation intensity to match the specific materials. This can be achieved by adjusting the voltage and gas mixture. For high-carbon steels (e.g., HSS), set the intensity higher to ensure proper fusion. For Delrin or other thermoplastics, a lower intensity is suitable to avoid distortion and melting.