紫外纳秒激光切割铁基非晶带材工艺研究

Study on Ultraviolet Nanosecond Laser Cutting Processes of Fe-based Amorphous Ribbon

铁基非晶带材是一种新型结构功能材料,具有优异的磁性、耐磨性、强度和硬度等。采用波长355 nm的纳秒紫外激光对Fe78Si9B13非晶薄带进行激光切割,研究激光脉冲频率、脉冲宽度和切割速度对切缝宽度和热影响区宽度的影响规律。结果表明,在一定范围内,增加切割速度能够减少切缝和热影响区宽度,提高切割效率;切缝和热影响区宽度随脉冲频率的增大而减小;随着脉宽的增加,切缝宽度呈下降趋势,而热影响区宽度呈上升趋势。热分析结果表明部分样品的热影响区域发生晶化反应。

Fe-based amorphous ribbon is a new structural and functional material with excellent magnetic properties, wear resistance, strength and hardness and so on. Fe;Si;B;amorphous ribbons were cut by ultraviolet nanosecond laser with 355 nm wavelength. The effects of laser pulse frequency, pulse width and cutting speed on the width of the slit and the width of the heat affected zone were studied. The results show that Increasing the cutting speed can reduce the slit width and the size of the heat-affected zone, and improve the cutting efficiency within a certain range. As the frequency increases, the width of the slit and heat-affected zone decreases. With the increase of pulse width, the width of the slit decreases, but the width of the heat-affected zone increases. The results of thermal analysis showed that some samples were crystallized in the heat-affected area.