The morphologies of roll surfaces are modified with pulsed Nd:YAG laser and characterized by topography measuring instrument (WYKO-16 DRT2TC). Sombrero shaped bumps with diameters 230-250 /spl mu/m and heights 2-4 /spl mu/m are produced by out of focus laser beam. A quantitative model is proposed to predict the bump formation during martensitic transformation. The results show: the bump height caused by martensitic transformation is very small. The key factor of macroscopic bump formation on roll surface during laser texturing is surface tension of molten metal.
Surface modification of roll by pulsed ND:YAG laser: bump formation caused by martensitic transformation
2003-01-01
187717 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Surface Modification of Roll by Pulsed Nd:YAG Laser
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