What are the key process parameters in laser cutting?

Key laser cutting parameters include: Laser power (determines cutting capacity, typically 1-6kW for CO2/fiber lasers), Cutting speed (affects edge quality and productivity), Focus position (surface, above, or below for different effects), Assist gas type and pressure (oxygen for carbon steel, nitrogen for stainless/aluminum), Nozzle standoff distance, and Beam quality (BPP, M-squared). For thick materials: lower speed, higher power. For thin materials: high speed prevents heat damage. Fiber lasers are more efficient for thin sheets and reflective metals; CO2 lasers better for thick non-metals.