Laser cutting focus position
The laser cutting focus position is the vertical position of the laser beam focal point relative to the material surface. It affects the beam energy density and the melt ejection efficiency.
Physikalisch-chemischer Wirkmechanismus
The laser cutting focus position determines where the beam penetrates the material strongest. With correct focusing, the energy concentrates in a small area, creating high power density and ejecting the melt efficiently.
Metallurgical Relevance & Welding Risks
A wrong focus position can cause uneven melting or excessive burning of the surface, leading to incomplete ejection, porosity, or even material loss. Over-focusing can also alter the material and impair its mechanical properties.
Werkstattpraxis & Handlungsanweisungen
To set the laser cutting focus correctly, position the beam's focal point about 1 to 2 mm above the surface. This ensures optimal energy distribution and maximum ejection efficiency. For complex materials or special applications, you may need to adjust the focus experimentally.