The tests have been carried out with a ROFIN™ DC 025 CO2 laser with a maximum power of 2500 W. The lens system has a focal distance of 127 mm (5″), obtaining a minimum spot size of 0.21 mm.
The main parameters have been varied in order to study its influence on the quality and geometry of cutting in the different types of AHSS sheet steels used in the car industry (see Table 1). The aim has been to obtain the optimum cutting conditions.