第22卷第5期
2014年5月文章编号
1004-924X(2014)05-1150-02
光学精密工程
Optics and Precision Engineering
Vol.22No.5
May.2014
冷轧生产线硅钢激光辅助切割有限元模拟
辛立军*，王智勇
（北京工业大学激光工程研究院，北京100124）
摘要：研究了激光加热辅助圆盘剪高速切割技术，以解决现有冷轧生产线硅钢切边技术存在的微裂纹、应力、毛刺和边浪等问题。建立了激光加热温度场有限元分析模型，根据生产线上圆盘剪加工的实际过程，探讨了数值模拟中热源的加载形式，研究了激光对板材进行辅助加热时各个工艺参数如激光功率、光班尺寸以及激光人射角度对切割工艺的影响，并通过实验对工艺参数进行了优化。最后，进了验证实验。实验结果显示：当激光加热点运动至圆盘剪刃口位置时，温度为100℃左右，此时材料硬度降低到原有硬度的70%～80%，降低了切削力，减少了阅盘剪的磨损，可有效提高阅盘剪的寿命。
关键调：激光编助切割；硅钢；高速切割；有限元模拟
中图分类号：TG485
文献标识码：A
doi;10.3788/OPE.20142205.1150
Laser assisted cutting of silicon steel on cold rolling production line
XINLi-jun',WANG Zhi-yong
(Institute of Laser Engineering,BeijingUniversityof Technology,Beijingloo124,China)
*Correspondingauthor,E-mail:2ywang@bjut.edu.cn
Abstract: Laser assisted trimmer side cutting technology was studied to overcome the problems such as micro cracks, stress, burrs and edge waves existing in a coid rolling production line of silicon steel side cutting. A finite element analysis model for the laser hearting temperature field was established, the loading form of a heating source was determined and influences of various processing parameters like laser powers, spot sizes, and laser incident angles on laser assisted heating sheet materials were discussed according to the actual process of a cold rolling production line. These processing parameters were optimized in experiments. It is proved that the temperature is about 1oo C when the laser heated spot is moved to the blade position of trimmer. At this time, the hardness of the material drops to 70% to 80% and the cutting forces is declined. As a result, the wear of cutting trimmer is reduced and the life of the cutting trimmer is improved effectively.
Key words:laser assisted cutting;silicon steel;high speed cutting;finite element analysis
1引言
硅钢具有良好的磁性能和较高硅含量，是制收稿日期：2013-06-05；修订日期：2013-07-18，
造变压器、继电器等机电产品和电子产品的重要材料[1-2]。在硅钢加工中，采用圆盘剪进行精整工序切边时[3-]，由于刃口直接作用在硅钢上，切口边缘存在微裂纹、应力以及毛刺和边浪等问
基金项目：国家科技重大专项资助项目（No.2010ZX04013-052）