纳秒脉冲激光清洗DC04冷轧带钢表面油污的数值模拟与实验研究
Numerical Simulation and Experimental Study of Nanosecond Pulse Laser Cleaning of DC04 Cold-Rolled Strip Surface Oil
郝佳帆 1秦文斌 1刘友强 1姜梦华 1曹银花 1王智勇1
作者信息
- 1. 北京工业大学材料与制造学部北京市激光应用技术工程技术研究中心,北京 100124;北京工业大学跨尺度激光成型制造技术教育部重点实验室,北京 100124;北京工业大学材料与制造学部激光工程研究院,北京 100124
- 折叠
摘要
针对DC04冷轧带钢表面冷轧油的清洗需求,利用COMSOL Multiphysics软件对纳秒脉冲激光清洗DC04冷轧带钢表面油污的温度场分布及油污去除过程建立模型,结果表明,当光斑半径为80 μm、激光能量密度达到3.48 J/cm2 时,油污基本上可以被去除.然后,利用纳秒脉冲激光对冷轧带钢表面的冷轧油进行了激光清洗实验研究.结果表明,当激光能量密度达到3.48 J/cm2、激光光斑搭接率为50%时,油污基本上被去除,符合模拟仿真结果.另外,还对激光光斑搭接率对激光清洗效果的影响进行了研究,结果表明,当激光光斑搭接率降低至37.5%时,激光能量密度需增大至4.47 J/cm2.因此,利用纳秒脉冲激光可以有效清洗DC04冷轧带钢表面的冷轧油,并且不会对带钢表面造成明显损伤,为纳秒脉冲激光清洗其他种类材料表面油污的工艺参数确定提供了参考.
Abstract
According to the cleaning demand of cold rolled oil on DC04 cold rolled strip surface,we use COMSOL Multiphysics software to establish the temperature field distribution and oil stain removal process model of nanosecond pulse laser cleaning oil stain on DC04 cold rolled strip surface.The results show that when the spot radius is 80 μm and the laser energy density reaches 3.48 J/cm2,the oil can be basically removed.Then,a nanosecond pulsed laser is used to clean cold rolled oil on the surface of cold rolled strip steel.The results show that when the laser energy density exceeds 3.48 J/cm2 and the laser spot overlap rate is 50%,the oil pollution can be removed,which is consistent with the simulation results.In addition,the influence of laser spot overlap rate on laser cleaning effect is also studied.The results show that the laser energy density should be increased to 4.47 J/cm2 when the spot overlap rate is reduced to 37.5%.Therefore,nanosecond pulsed laser can effectively clean the cold rolled oil on the surface of DC04 cold rolled strip without causing obvious damage to the surface of the strip,which provides a reference for determining the process parameters of nanosecond pulsed laser to clean other kinds of materials.
关键词
激光清洗/纳秒脉冲激光/DC04冷轧带钢/油污/有限元模拟Key words
laser cleaning/nanosecond pulsed laser/DC04 cold rolled strip/oil pollution/finite element simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据