Page 70 - Welding of Aluminium and its Alloys

Pulse frequency Cutting speed Gas pressure Assist gas Pulse width (mm/min) (ms) (Hz) 6000 4 oxygen 1 120 540 6 oxygen 0.5 100 60 7 oxygen 1.5 31 4500 oxygen na na 300 nitrogen na na 3800 oxygen na na 3000 oxygen na na 1200 oxygen na na

Average power (kW) 0.174 0.414 0.224 2 2 1.41 1.2 1.5

Parameters for laser cutting Thickness (mm) 1.2 2 4 2 2 1.2 2 4

Table 4.3 Process Pulsed Nd-YAG CW Nd-YAG CW CO 2