COMPOSITE BEAM GENERATOR AND POWDER MELTING OR SINTERING METHOD USING THE SAME

摘要

This disclosure provides a composite beam generator (400) and a method of performing powder melting or sintering in additive manufacturing process using the same. The composite beam generator comprises: a beam splitter (420) for splitting a beam into a first directed beam (412) and a second directed beam (413); a beam shaper (440) for shaping a transverse energy distribution profile of the second directed beam to non-circular; at least one beam delivery unit (460) for guiding the first directed beam or the second directed beam; and a beam combiner (450) for receiving the first directed beam and the second directed beam, and respectively generating a first output beam (415) and a second output beam (416), and combining them into the composite beam.