Cutting parameters

Laser power

pL (W)

3000

Cutting velocity (m/min)

1 - 5

Spot diameter

w0 (μm)

110

Q235-A

specific heat c (J/kg×K)

482

thermal conductivity k (W/m×K)

59.5

Melting temperature Tm (K)

1753

Density ρ (kg/m3)

7860

Fusion latent L (kJ/kg)

272

Ambient temperature

Ta (K)

293

Dimensionless parameters

power PA

60

velocity Pe

0.153 - 0.764

latent St

0.39