Abstract

Cold-rolled steel sheets with specially designed surface topographies are widely in applications in car and fabrication industry. Laser texturing is a novel technique used to texture the cold roller surface to produce high quality steel sheets with good formability and image clarity. Principle of multi-head CO₂ laser surface texturing technique using polygon scanner for beam modulation is introduced. Texturing parameters and their influence are investigated. The obtained craters are of volcano shape with diameter of 120~230?m, depth of 7~21?m and bump height of 5~17?m. The surface average roughness Ra is in the range of 1.03~5.86?m. The textured surface is abrasive resistant and prolongs the roller service life.

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