Laser forming of magnesium alloy foils

Die and Mold-Less Forming of Sheet Materials-Curved Surface Forming by Laser Irradiation

“…As mentioned above, the scanning speed at each irradiation point can be determined by the required bending angle according to equation (1). The required bending angle is derived as follows.…”

“…The laser beam head position was controlled according to the scanning lines on the x-y plane shown in Figure 6 and the z-position was also controlled to keep the defocal length constant by compensating for the z-position errors caused by the deformation of the material. The scanning speed Ss at each point was determined by equation (1), as a function of the required bending angle Ba at each point. Other than the scanning speed, all other scanning conditions were fixed, that is, the pulse width was 0.1ms, pulse frequency was 100Hz, laser spot diameter was 0.1mm (defocal length was 2 mm), and the number of scans was 1.…”

“…Since it does not use dies or molds, it enables one to rapidly make prototypes and to decrease the cost and time for small-quantity production. There have been several works [1][2][3][4][5][6][7][8][9][10][11] on laser forming thus far. However, the objective of almost all of these works has been to elucidate the phenomenon of laser forming through experiments and through the FEM analysis of simple bending.…”