公开(公告)号：WO2021257611A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/037490

申请日：2021-06-15

Applicant: SEURAT TECHNOLOGIES, INC.

Inventor： DUANMU, Ning ,  DEMUTH, James A. ,  BAYRAMIAN, Andrew J. ,  SHEN, Yiyu ,  KISSINGER, Drew W. ,  VAN DER BIJL, Robbert ,  KRAS, Susanne ,  GILLESPIE, Joseph

IPC: B22F12/10 ,  B22F10/00 ,  B22F12/00 ,  B33Y30/00 ,  B33Y40/00 ,  B22F10/28 ,  B22F12/17 ,  B22F12/20 ,  B22F12/43 ,  B22F12/90 ,  B29C64/153 ,  B29C64/273 ,  B29C64/295 ,  B29C64/393 ,  B33Y50/02

Abstract: A manufacturing system includes a printer chamber having a printer bed that supports manufacturing materials and an internal heating system supported by the printer chamber. The internal heating systems is configured to direct patterned heat energy onto the printer bed and supported manufacturing materials. An external heating system is supported by or positioned near the printer chamber and configured to direct patterned heat energy onto the printer bed and any supported manufacturing materials.

公开(公告)号：WO2021242871A1

公开(公告)日：2021-12-02

申请号：PCT/US2021/034273

申请日：2021-05-26

Applicant: SEURAT TECHNOLOGIES, INC,

Inventor： BAYRAMIAN, Andrew J. ,  COOKE, April L. ,  LEBLANC, Cote ,  KISSINGER, Drew W. ,  LEARD, Francis L. ,  CHITTICK, Harold W. ,  DEMUTH, James A. ,  JARBOE, Jeffrey ,  GILLESPIE, Joseph ,  KAMSHAD, Kourosh ,  FERRERI, Nicholas C. ,  DUANMU, Ning ,  KRAS, Susanne ,  MUNDON, Summer Kapuaimilia ,  SHEN, Yiyu ,  MACDONALD, J. Thare

IPC: B29C64/153 ,  B29C64/259 ,  B29C64/268 ,  B33Y30/00 ,  B23K26/02 ,  B23K26/342 ,  B22F10/28 ,  B22F12/30 ,  B22F12/38 ,  B22F12/41 ,  B22F12/52 ,  B22F12/67 ,  B22F12/90 ,  B29C64/329 ,  B33Y10/00 ,  B33Y40/00

Abstract: A print engine of an additive manufacturing system includes a print station configured to hold a removable cartridge. A laser engine including a frame can be positioned to hold at least one removable field replaceable unit that includes at least some laser optics or patterning optics. An optical alignment system can be attached to at least one of the print station or the laser engine to align the field replaceable unit with respect to the removable cartridge.

公开(公告)号：WO2021207548A1

公开(公告)日：2021-10-14

申请号：PCT/US2021/026474

申请日：2021-04-08

Applicant: SEURAT TECHNOLOGIES, INC.

Inventor： BAYRAMIAN, Andrew J. ,  DEMUTH, James A.

IPC: B29C64/264 ,  B29C64/10 ,  B29C64/20 ,  B29C64/268 ,  H01S3/02

Abstract: In one embodiment a manufacturing method involves generating laser light at a first wavelength or range of wavelengths. A laser amplifier having a gain medium that amplifies light at a second wavelength or range of wavelengths can be optically pumped in response to receiving the generated laser light. The gain medium is cooled with a coolant fluid able to absorb the second wavelength or range of wavelengths and the generated and amplified laser light is directed toward an article processing unit.

公开(公告)号：WO2022115183A1

公开(公告)日：2022-06-02

申请号：PCT/US2021/056040

申请日：2021-10-21

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC ,  SEURAT TECHNOLOGIES, INC.

Inventor： KHAIRALLAH, Saad A. ,  ROEHLING, John ,  SHEN, Yiyu ,  BAYRAMIAN, Andrew James ,  DUANMU, Ning ,  DEMUTH, James A.

IPC: B22F10/28 ,  B22F10/36 ,  B22F10/37 ,  B22F12/41

Abstract: The present disclosure relates to systems and methods for performing large area laser powder bed fusion (LBPF) to form a plurality of layers of a 3D part in a layer-by-layer fashion using meltable powder particles. In one implementation the system makes use of a first light source, which may be a diode laser subsystem, for generating a first light pulse of a first duration. The first light is used to preheat a substrate underneath a new layer of powder particles, wherein the substrate is formed from a previously fused quantity of the powder particles. A second light source, which may be a pulse laser, generates a second light pulse subsequent to the first light pulse. The second light pulse has a second duration shorter than the first duration by a factor of at least about 10, and fully melts the new layer of powder particles in addition to the substrate, to achieve a smooth printed layer. The wavelength of the first light pulse also differs from a wavelength of the second light pulse.