| Multi-head roll surface texturing with high power CO2 laser has been adopted to enhance production efficiency based on research of laser texture technology .The equipment for mtlti-head roll texturing with high power CO2 laser, which has a lot of advantages as easy modulation of laser pulse, compacted configuration, low-cost for implement, operation and maintaining. Therefore, it is conduced to extend application of muti-head roll surface texturing with high power CO2 laser.More new request for the system components of roll surface texturing is analyzed with project practice. The system componentsof high power CO2 laser texture are described, including the function and performance of high power CO2 laser, beam delivery system, controlling system and machine.The technology of multi-head beam is studied, about each maching equipment of multi-head roll surface texturing. The system of focus and outside beam route is designed by double-head laser texture which practiced in project.High power CO2 laser is adopted in the experiment of laser texture, effects of the technology parameters to laser texture are studied in experiments. With appropriate assist gas pressure and reasonable defocus, results show that the remarkable effects to the size and shape of textured spots are the frequency, width of laser pulse and the velocity of process. The microstructure of textured spots is studied with microscope.The charater and diagnostic parameter of laser texture surface is analyzed. The results show dense microstructure in the textured spot, which brings about the improvement of the hardness, wear and corrosion resistance. It is especially emphasized that cold roll production craftwork would be improved by laser texture, and the capability of cold roll steel also would be influenced by laser texture. |
