What is the pulse occupation ratio, the pulse duty ratio refers to the proportion of the beam exposure time of each pulse. The frequency is the number of peak power in a pulse, and the duty cycle is in a pulse, and the peak power ratio is also low. According to the relationship between the average power (PA) and the duty cycle (d), the relationship between the pulse peak power (PP) pulse peak power PP and the laser cutting surface are calculated according to the following formula.

When the pulse cutting conditions, the cutting speed U and the frequency FP remain unchanged. The roughness of the cutting surface is the result of measurement of 1.2mm, 3.2mm, and 6.0mm thick carbon steel materials, respectively. All plate thickness is displayed as the roughness of the upper laser cutting surface than the roughness of the cutting surface of the lower part; the greater the pulse peak power, the better the roughness of the cutting surface.

The relationship between pulse peak power and heat affects layer width.
The width (H) of the heat influence layer is measured in three places in the middle of the upper part (HW) (HM) (HD). The widest on the thermal influence layer is the lower (HD) from the middle (HD) to the upper (HW) thermal influence layer width to reduce the trend.