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：WO2022087139A1

公开(公告)日：2022-04-28

申请号：PCT/US2021/055862

申请日：2021-10-20

Applicant: SEURAT TECHNOLOGIES, INC.

Inventor： LEARD, Francis, L. ,  DEMUTH, James, A. ,  BAYRAMIAN, Andrew, J. ,  KISSINGER, Drew, W. ,  DUANMU, Ning ,  KAMSHAD, Kourosh

IPC: G02F1/1337 ,  G02F1/37 ,  G02B5/30

Abstract: An apparatus with first and second transparent conductive oxide layers is described. A photoconductive layer can be positioned between the first and a second transparent conductive oxide layers. The photoconductive layer can be a crystalline layer that can include bismuth silicate or other suitable materials. An electro-optical layer is positioned in contact with the photoconductive layer. In some embodiments the photoconductive layer is positionable to receive a write beam that defines a two-dimensional spatial pattern.

公开(公告)号：WO2020123828A1

公开(公告)日：2020-06-18

申请号：PCT/US2019/066015

申请日：2019-12-12

Applicant: SEURAT TECHNOLOGIES, INC

Inventor： DUANMU, Ning ,  DEMUTH, James, A. ,  BAYRAMIAN, Andrew, J. ,  SHEN, Yiyu ,  KISSINGER, Drew, W.

IPC: B22C7/02 ,  B22C9/04 ,  B22C9/10

Abstract: A method of additive manufacture is disclosed. The method can include providing an enclosure surrounding a powder bed and having an atmosphere including helium gas. A high flux laser beam is directed at a defined two dimensional region of the powder bed. Powder is melted and fused within the defined two dimensional region, with less than 50% by weight of the powder particles being displaced into any defined two dimensional region that shares an edge or corner with the defined two dimensional region where powder melting and fusing occurs.

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.

公开(公告)号：WO2021242865A1

公开(公告)日：2021-12-02

申请号：PCT/US2021/034265

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: B22F10/28 ,  B23K26/12 ,  B29C64/153

Abstract: A cartridge for a manufacturing system includes a sealable chamber having a bed and a laser transparent window. A powder hopper can be positioned within the sealable chamber. A powder spreader is positioned within the sealable chamber for distributing powder from the powder hopper onto the bed.

公开(公告)号：WO2020132215A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/067424

申请日：2019-12-19

Applicant: SEURAT TECHNOLOGIES, INC.

Inventor： BAYRAMIAN, Andrew, J. ,  DEMUTH, James, A. ,  DUANMU, Ning ,  SHEN, Yiyu

IPC: B23K25/00 ,  B23K26/00 ,  B23K26/34

Abstract: A method of additive manufacture is disclosed. The method may include providing a powder bed and directing a shaped laser beam pulse train consisting of one or more pulses and having a flux greater than 20 kW/cm 2 at a defined two dimensional region of the powder bed. This minimizes adverse laser plasma effects during the process of melting and fusing powder within the defined two dimensional region.