High speed laser cutting of silicon steel on cold rolling production line

XIN Lijun; WANG Zhiyong

doi:10.7510/jgjs.issn.1001-3806.2015.02.018

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.

High speed laser cutting of silicon steel on cold rolling production line

Corresponding author: WANG Zhiyong, zywang@bjut.edu.cn

1. Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China;

2. Institute of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China

Received Date: 2014-03-10

Accepted Date: 2014-05-21

Available Online: 2015-03-25

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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Reference (10)

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High speed laser cutting of silicon steel on cold rolling production line

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