Common Causes Of Slag Hanging Issues During Laser Cutting

Insufficient Laser Output Power: When cutting thick plates, insufficient power fails to fully melt the entire sheet, preventing complete slag removal. If the issue persists even at maximum power settings, consider upgrading to a higher-power laser.

Laser beam focus deviation: Both overly close and overly distant focus points compromise cutting quality. A focus point that is too close causes excessive heat at the bottom, resulting in molten material flowing in a liquid state and forming spherical slag deposits upon cooling. Conversely, a focus point that is too distant prevents complete melting of the material, leading to sharp, short slag residues.

Insufficient Auxiliary Gas Pressure: Low pressure fails to effectively blow away slag or cool the workpiece promptly, causing slag buildup. Adjust pressure to an appropriate level based on material thickness.

Inappropriate Cutting Speed: Excessive speed prevents timely severing, resulting in slanted striations and slag buildup on the lower section. Insufficient speed causes over-melting, producing a rough cut surface with slag buildup on the upper section.