B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
25/141, 75/156,
B22F 3/10 (2006.01) B22F 3/00 (2006.01) B22F 3/105 (2006.01) B23K 26/00 (2006.01) B23K 26/34 (2006.01)
Patent
CA 2024592
A method and apparatus for selectively sintering a layer of powder to produce a part comprising a plurality of sintered layers. The apparatus includes a computer (40) controlling a laser (30) to direct the laser energy onto the powder (26) to produce a sintered mass. The computer (40) either determines or is programmed with the boundaries of the desired cross-sectional regions of the part. For each cross-section, the aim of the laser beam (64) is scanned over a layer of powder (57) and the beam is switched on to sinter only the powder within the boundaries of the cross-section. Powder is applied and successive layers (54, 55, 56, 57) sintered until a completed part is formed. Preferably, the powder comprises a plurality of materials having different dissociation or bonding temperatures. The powder preferably comprises blended (901, 902) or coated (1001, 1002) materials.
Barlow Joel W.
Beaman Joseph J.
Bourell David L.
Deckard Carl R.
Marcus Harris L.
Board Of Regents The University Of Texas System
Cassan Maclean
The Board Of Regents Of The University Of Texas System
LandOfFree
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