High speed laser cutting of silicon steel on cold rolling production line
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摘要: 为了解决冷轧硅钢生产线上现有的圆盘剪切边技术存在的微裂纹、应力、毛刺和边浪等问题,采用光纤激光器进行了高速切割工艺研究,并进行了理论分析与实验验证,得到了激光高速切割速率和质量数据。结果表明,激光功率为3000W时,可以得到高达400m/min的切割速率;高速切割过程中,由于小孔现象的存在以及切割前沿变得平坦,随着切割速率增加,切割速率增长幅度因子由1降为0.3,同时毛刺高度由5μm急剧增加至22μm,切割质量下降;采用光-气非同心切割方法进行切割,可以提高高速切割的切割质量,毛刺高度小于15μm。该研究对为激光高速切割技术提供理论支撑与技术指导是有帮助的。Abstract: In order to solve the problems existing in cold rolling production line of silicon steel side cutting, such as micro crack, stress, burr, edge waves, experiments of high speed laser cutting with fiber laser were carried out. The data of cutting speed and cutting quality were obtained. The results show that cutting speed can reach 400m/min when power is 3000W. Because of the closed keyhole and the flat cutting front, with the increasing of cutting speed, the growth factor of cutting speed reduces from 1 to 0.3 and cutting quality becomes poor with burr height from 5μm to 22μm. The cutting quality can be improved using light-gas eccentrically laser cutting technology and the burr height is less than 15μm. The study provides theory support and technology guidance for high speed laser cutting.
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Keywords:
- laser technique /
- high speed laser cutting /
- light-gas eccentricity /
- silicon steel
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[1] INSTITUTE OF NONFERROUS METAL, MINISTRY OF METALLURGICAL INDUSTRY. Design of machinery equipment for workshop of strip plant [M]. Beijing: Metallurgical Industry Press, 1983: 172-191 (in Chinese).
[2] SANKEVICH V P. Rotary disk shears with mechanized trimming adjustment [J]. Metallurgist, 2007, 14(3): 186-187.
[3] ZOU J X. Rolling machine [M]. Beijing: Metallurgical Industry Press, 1989: 115 (in Chinese).
[4] LIN H G. Application manual of die materials [M]. Beijing: Machinery Industry Press, 2004: 62-67 (in Chinese).
[5] LI W Y. Cause analysis and improvement of cold strip's trimmed waves [J]. Bao Steel Technology, 2004(4): 1-4 (in Chinese).
[6] KAI U P, DIRK P. High speed laser cutting of thin metal sheets [J]. Proceedings of the SPIE, 1996, 2207: 96-110.
[7] LEE K H, KIM K C, LEE J H. Laser cutting characteristic of cold rolled steel sheets [J]. Journal of KWS, 1995, 13(4): 369-371.
[8] HAN Y H. Laser beam quality and process efficiency [J]. Spring Annual Meeting Proceedings of Korean Society of Processing, 2006,7(2): 42-43.
[9] THOMY C, SEEFELD T, VOLLERTSEN F. High-power fiber lasers application potentials for welding of steel and aluminum sheet material [J]. Advanced Materials research, 2005, 6/8: 171-178.
[10] HVGEL H. New solid-state lasers and their application potentials [J]. Optics and Lasers in Engineering, 2000, 34(4/6): 213-229.
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