28mm Standard Double Style Laser Nozzle

Controlling and Optimizing Laser Cutting with Nozzles

The nozzle plays a crucial role in laser cutting by precisely controlling the focusing position of the laser beam on the workpiece surface, ensuring accurate application of laser energy.

Through its design, the nozzle accelerates the laser beam, causing the irradiated area to melt and vaporize, thereby forming a cutting gap.

It also guides auxiliary gases (e.g., nitrogen, oxygen) smoothly through the workpiece, creating high pressure near the outlet that enhances cutting speed while effectively removing slag and heat, thus protecting the laser head's internal lens.

Moreover, the rapid ejection of auxiliary gas prevents debris like molten material from rebounding upwards, safeguarding the focusing lens from damage.

The geometric shape and size of the nozzle significantly impact cutting quality. By selecting appropriate nozzle types and aperture sizes, one can optimize gas flow and laser beam focusing during cutting, leading to improved accuracy and cross-sectional quality.

Different materials and workpiece thicknesses require specific nozzle types and auxiliary gases. For instance, nitrogen is often chosen for metallic materials like stainless steel, along with a compatible nozzle type.

Additionally, the thickness of the workpiece influences nozzle selection; thicker workpieces necessitate nozzles with larger apertures to ensure sufficient gas flow and cutting speed.

Lastly, maintaining coaxiality between the nozzle outlet hole and the laser beam is vital for cut quality. Regular checks and adjustments are necessary to align the nozzle center with the laser for optimal cutting results.