What is the effect of using compressed air that is not completely dry in the PAC process?

Using compressed air that is not completely dry in the Plasma Arc Cutting (PAC) process can lead to a potential for oxidation. When moisture is present in the compressed air, it can combine with the metal being cut, particularly at elevated temperatures. This creates a conducive environment for oxidation reactions to take place. The heat generated during the cutting process can facilitate the oxidation of the metal surface, leading to the formation of oxides.

This oxidation can negatively impact the quality of the cut, as it may cause the surface to become rough or produce slag that can interfere with the cutting process. Additionally, if oxidation occurs, it can compromise the integrity of the cut edges and decrease the overall performance of the welding or cutting process. Therefore, ensuring that the compressed air used in PAC is completely dry is crucial to prevent oxidation and achieve high-quality cutting results.