为了提高激光毛化(LT)效率以满足企业生产的实际需要, 生产出具有可控表面形貌的冷扎钢板, 提出了一种采用多棱镜扫描分光的多头激光毛化技术的实现方案, 从原理和光路设计上对其进行了分析, 并进行了生产实践。结果表明, 其单头脉冲频率可以达到30 kHz, 毛化点密度可达7×7 dots/mm2, 脉宽范围0.03～1 ms; 对于600 mm×1800 mm的辊面, 在6×6 dots/mm2毛化点密度下, 毛化效率可达35 min/根, 满足企业的实际生产需要; 同时得到圆形毛化点, 改善了冷轧激光毛化板的均匀性, 从而提高了激光毛化板的力学性能。基于该技术的双头激光毛化设备已投入实际生产并取得良好效果。

Multi-heads laser texturing (LT) technology using polygon scanning beam modulation is proposed to increase the production efficiency to meet the industrial need and produce cold roll steel sheet with controllable surface topography. Optical design, system principle and the practice are introduced. The results indicate that single-head pulse repetition frequency of 30 kHz and crater density of 7×7 dots per square millimeter can be obtained, with pulse width ranging from 0.03 ms to 1 ms. For roll with length of 1800 mm and diameter of 600 mm, when textured in 6×6 dots per square millimeter, the texturing efficiency can reach 35 min per roll, enough to meet the industrial requirement. Meanwhile, round texturing craters are obtained, which improves the uniformity of the steel sheet and its mechanical properties effectively. Double-heads laser texturing equipment based on this technology is already in practice and the results are satisfying.