Seurat Technologies, Inc.

Lawrence Livermore National Security, LLC

Yiyu Shen

James A DeMuth

Andrew James Bayramian

Ning Duanmu

Drew W Kissinger

Susanne Kras

Joseph Gillespie

Francis Lawrence Leard

Kourosh Kamshad

Cote LeBlanc

Jeffrey Jarboe

Harold W Chittick

Summer Kapuaimilia Mundon

J Thare MacDonald

Nicholas C Ferreri

April L Cooke

Robbert Van Der Bijl

Saad A Khairallah

John Roehling

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.

Print cartridge for additive manufacturing

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.

Thermal compensation methods for laser energy delivery for additive manufacturing using heating and cooling elements

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.

Modular architecture for additive manufacturing

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.

System and method for large-area pulsed laser melting of metallic powder in a laser powder bed fusion application

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.

Additive manufacturing system for object creation from powder using a high flux laser for two-dimensional printing

Thermal compensation insulation for separation of heating and cooling elements in manufacturing systems

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/cmat 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.

Additive manufacturing system using a pulse modulated laser for two-dimensional printing

Growing community of inventors

Tewksbury, MA, United States of America

Yiyu Shen