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Objective Cold rolled strips are widely employed in automobiles, home appliances and other industries, and their surface micromorphology affects the surface chromatic aberration of the strip steel. The strip steel surface with regularly distributed microstructure tends to exhibit alternative bright and dark fringes. When the microstructure is randomly distributed, the stripes caused by multibeam interference will be weakened. The surface microstructure of the rolled strip corresponds to that of the roll surface. The disordered roll laser texturing technology features less pollution, a wide range of texturing roughness, and high surface hardness, which can reduce the surface chromatic aberration of the rolled strip and is expected to meet the growing demand for sound stamping performance and fine brightness after the painting of cold rolled sheet productions.Methods The laser texturing roller technology is presented for controlling the range of peak per inch (PPI) density and roughness of rolling rolls based on the offset phase difference of the random distribution. The formation mechanism of light and dark alternately stripes on the surface of rolled strip steel is analyzed using the multibeam interference principle. By the ray tracing method, the random distribution phase difference generated by the offset of equally spaced convex
Objective Cold rolled strips are widely employed in automobiles, home appliances and other industries, and their surface micromorphology affects the surface chromatic aberration of the strip steel. The strip steel surface with regularly distributed microstructure tends to exhibit alternative bright and dark fringes. When the microstructure is randomly distributed, the stripes caused by multibeam interference will be weakened. The surface microstructure of the rolled strip corresponds to that of the roll surface. The disordered roll laser texturing technology features less pollution, a wide range of texturing roughness, and high surface hardness, which can reduce the surface chromatic aberration of the rolled strip and is expected to meet the growing demand for sound stamping performance and fine brightness after the painting of cold rolled sheet productions.Methods The laser texturing roller technology is presented for controlling the range of peak per inch (PPI) density and roughness of rolling rolls based on the offset phase difference of the random distribution. The formation mechanism of light and dark alternately stripes on the surface of rolled strip steel is analyzed using the multibeam interference principle. By the ray tracing method, the random distribution phase difference generated by the offset of equally spaced convex
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