Fig. 1. Surface morphology of H13 tool steel after wire-electrode cutting machining

Fig. 2. Schematic of laser-polishing setup

Fig. 3. Unpolished (left) and polished (right) surface morphologies of H13 tool steel

Fig. 4. Unpolished and polished surface profiles and frequency spectra of H13 tool steel. (a) Surface profiles; (b) frequency spectra

Fig. 5. Thermophysical properties of H13 tool steel. (a) Density; (b) thermal conductivity; (c) dynamic viscosity; (d) equivalent specific heat capacity

Fig. 6. Surface profiles and frequency spectra of unpolished sample and model. (a) Surface profiles; (b) frequency spectra

Fig. 7. Computational domain of laser-polishing numerical model

Fig. 8. Temperature curve at x=500 μm of surface

Fig. 9. Molten pools in experiment and simulation. (a) Molten pool in experiment; (b) molten pool in simulation

Fig. 10. Local velocity fields. (a) Velocity field dominated by thermocapillary forces; (b) velocity field dominated by capillary force

Fig. 11. Surface profiles and frequency spectra of polished sample and model. (a) Surface profile; (b) frequency spectra

Fig. 12. Temperature curves at x=500 μm of surface under different laser powers

Fig. 13. Depth of molten pool and surface roughness under different laser powers

Fig. 14. Local velocity fields at different moments under laser power of 175 W. (a) t=0.00312 s; (b) t=0.00322 s; (c) t=0.0033 s; (d) t=0.00355 s

Fig. 15. Local velocity fields at different moments under laser power of 300 W. (a) t=0.00226 s; (b) t=0.00267 s

Fig. 16. Temperature curves at x=500 μm of surface under different scanning velocities

Fig. 17. Depth of molten pool and surface roughness under different scanning velocities