what are the key points for adjusting the parameters of carbon arc gouging carbon rods for different base materials (such as low carbon steel, stainless steel, and cast iron)?

What are the key points for adjusting the parameters of carbon arc gouging carbon rods for different base materials (such as low carbon steel, stainless steel, and cast iron)?

Arc control: Maintain a short arc throughout (1–2 mm length) to avoid arc drift and carbon particle residue; Carbon rod maintenance: Copper-plated carbon rods are preferred (good conductivity, slow burn-off); 

Hollow carbon rods are prohibited for stainless steel (to prevent excessive carbon powder contamination); Air source requirements: Compressed air must be dry and clean; 

avoid moisture contamination during stainless steel planing (to prevent oxidation).