Laser perforation method

The present invention provides a laser perforation process, a laser cutting system relies implemented, the system comprising a fiber laser, a laser cutting head, with the laser cutting head is connected to the solenoid valve, the solenoid valve connected to the outlet of the auxiliary gas to the cutting head the air inlet pipe; matching with the laser cutting system of the laser perforation processing laser pulse peak power, low frequency and high duty cycle, it is set to a frequency between 5-10 Hz, a duty ratio of 60 % -90% between. Advantageous effects of the present invention is more coherent perforation operation, a residence time of almost zero; cutting effect on the steel sheet surface to reduce the discharge of slag; high piercing efficiency and stability.