公开(公告)号：USRE50427E1

公开(公告)日：2025-05-13

申请号：US18621286

申请日：2024-03-29

Applicant: MARKFORGED, INC.

Inventor： Gregory Thomas Mark ,  Rick Bryan Woodruff ,  Keith Durand ,  Benjamin Hodsdon Gallup ,  Michelle Ling Chao

IPC: F27B17/00 ,  B22F3/10 ,  B29C64/295 ,  B33Y30/00 ,  B33Y40/00 ,  C04B35/64 ,  B22F10/12 ,  B22F10/14 ,  B22F10/18 ,  B22F10/43 ,  B22F10/73 ,  B22F10/80 ,  B22F12/55 ,  B29C64/165

Abstract: According to one aspect, embodiments herein provide a furnace for debinding and sintering additively manufactured parts comprising a unitarily formed retort having at least one open side, a heater for heating a sintering volume within the retort to a debinding temperature and to a sintering temperature, an end cap sealing the at least one open side, a forming gas line penetrating the end cap for supplying forming gas at a flowrate, and a heat exchanger within the retort, outside the sintering volume, and adjacent a heated wall of the retort, the heat exchanger having an inlet connected to the forming gas line and an outlet to the sintering volume, wherein the heat exchanger includes a heat exchange tube length sufficient to heat the forming gas to within 20 degrees Celsius of the sintering temperature before the forming gas exits the outlet.

公开(公告)号：US20210213534A1

公开(公告)日：2021-07-15

申请号：US17145695

申请日：2021-01-11

Applicant: MARKFORGED, INC.

Inventor： Gregory Thomas Mark ,  Christopher Hoffmann ,  Benjamin Hodsdon Gallup ,  Maxim Seleznev ,  Michelle Ling Chao

IPC: B22F10/40 ,  B22F10/14 ,  B22F10/68

Abstract: Systems, apparatus and methods of additively manufacturing objects are disclosed. Specifically, provided herein are methods of heating objects having a particle-based support at least partially surrounding the object during portions of stages of the heating. Additionally, systems, apparatus, and methods for removing the particle-based support during heating, such that the object can continue heating to form a final part. Systems, apparatus, and methods for distributing the particle-based support to shore the objects through heating are disclosed. Systems, apparatus, and methods for removing the particle-based support are also disclosed herein.

公开(公告)号：US20210154738A1

公开(公告)日：2021-05-27

申请号：US17101410

申请日：2020-11-23

Applicant: MARKFORGED, INC.

Inventor： Michelle Ling Chao ,  Rick Bryan Woodruff ,  Christopher Hoffman

IPC: B22F3/10 ,  B22F1/00 ,  B33Y70/00

Abstract: A method and system of additively manufacturing parts using a getter device is disclosed. Specifically, provided herein are methods and systems of using a getter device in a sintering atmosphere furnace for consistently and repeatedly sintering additively manufactured machined quality parts, such as, for example, titanium parts.

公开(公告)号：US10800108B2

公开(公告)日：2020-10-13

申请号：US16419776

申请日：2019-05-22

Applicant: MARKFORGED, INC.

Inventor： Gregory Thomas Mark ,  Rick Bryan Woodruff ,  Michelle Ling Chao

IPC: B29C64/40 ,  B29C64/165 ,  B33Y10/00 ,  B22F3/11 ,  B29C64/245 ,  B29C64/295 ,  B29C31/04 ,  B29C64/141 ,  B29C64/118 ,  B29K79/00 ,  B29K25/00 ,  B29C64/209 ,  B29C70/16 ,  B22F3/105

Abstract: According to one aspect, embodiments of the invention provide a method of 3D printing, comprising depositing a model material in successive layers to form a part, the model material being a metal composite including greater than 50% by volume metal powder and less than 50% by volume a first removable binder, depositing the model material in successive layers to form a support structure adjacent the part, depositing a sinterable separation material between a surface of the part and a surface of the support structure, the sinterable separation material formed from 10-40% by volume ceramic powder and greater than 50% by volume a second removable binder, debinding the first removable binder of the model material and the second removable binder of the sinterable separation material, and sintering the part, the support structure, and the sinterable separation material at a temperature profile that sinters the model material and the sinterable separation material.

公开(公告)号：US11701710B2

公开(公告)日：2023-07-18

申请号：US17145695

申请日：2021-01-11

Applicant: MARKFORGED, INC.

Inventor： Gregory Thomas Mark ,  Christopher Hoffman ,  Benjamin Hodsdon Gallup ,  Maxim Seleznev ,  Michelle Ling Chao

IPC: B22F10/40 ,  B22F10/14 ,  B22F10/68 ,  B33Y10/00 ,  B22F10/43 ,  B22F10/64 ,  B22F10/66 ,  B33Y30/00

CPC classification number: B22F10/14 ,  B22F10/43 ,  B22F10/64 ,  B22F10/66 ,  B22F10/68 ,  B33Y10/00 ,  B33Y30/00 ,  B22F2999/00 ,  B22F10/66 ,  B22F10/68 ,  B22F3/1025 ,  B22F2202/15

Abstract: Systems, apparatus and methods of additively manufacturing objects are disclosed. Specifically, provided herein are methods of heating objects having a particle-based support at least partially surrounding the object during portions of stages of the heating. Additionally, systems, apparatus, and methods for removing the particle-based support during heating, such that the object can continue heating to form a final part. Systems, apparatus, and methods for distributing the particle-based support to shore the objects through heating are disclosed. Systems, apparatus, and methods for removing the particle-based support are also disclosed herein.

公开(公告)号：US20210197493A1

公开(公告)日：2021-07-01

申请号：US17060916

申请日：2020-10-01

Applicant: MARKFORGED, INC.

Inventor： Gregory Thomas Mark ,  Rick Bryan Woodruff ,  Michelle Ling Chao

IPC: B29C64/40 ,  B29C64/165 ,  B33Y10/00 ,  B22F3/11 ,  B29C64/245 ,  B29C64/295 ,  B29C31/04 ,  B29C64/141 ,  B29C64/118

Abstract: According to one aspect, embodiments of the invention provide a method of 3D printing, comprising depositing a model material in successive layers to form a part, the model material being a metal composite including greater than 50% by volume metal powder and less than 50% by volume a first removable binder, depositing the model material in successive layers to form a support structure adjacent the part, depositing a sinterable separation material between a surface of the part and a surface of the support structure, the sinterable separation material formed from 10-40% by volume ceramic powder and greater than 50% by volume a second removable binder, debinding the first removable binder of the model material and the second removable binder of the sinterable separation material, and sintering the part, the support structure, and the sinterable separation material at a temperature profile that sinters the model material and the sinterable separation material.

公开(公告)号：US20190270254A1

公开(公告)日：2019-09-05

申请号：US16419776

申请日：2019-05-22

Applicant: MARKFORGED, INC.

Inventor： Gregory Thomas Mark ,  Rick Bryan Woodruff ,  Michelle Ling Chao

IPC: B29C64/40 ,  B29C64/165 ,  B33Y10/00 ,  B22F3/11 ,  B29C64/245 ,  B29C64/295 ,  B29C64/118 ,  B29C31/04 ,  B29C64/141

Abstract: According to one aspect, embodiments of the invention provide a method of 3D printing, comprising depositing a model material in successive layers to form a part, the model material being a metal composite including greater than 50% by volume metal powder and less than 50% by volume a first removable binder, depositing the model material in successive layers to form a support structure adjacent the part, depositing a sinterable separation material between a surface of the part and a surface of the support structure, the sinterable separation material formed from 10-40% by volume ceramic powder and greater than 50% by volume a second removable binder, debinding the first removable binder of the model material and the second removable binder of the sinterable separation material, and sintering the part, the support structure, and the sinterable separation material at a temperature profile that sinters the model material and the sinterable separation material.