公开(公告)号：US12269092B2

公开(公告)日：2025-04-08

申请号：US17296590

申请日：2019-03-01

Applicant: Arcam AB

Inventor： Safdar Ali ,  Kristofer Karlsson

IPC: B22F10/85 ,  B22F10/28 ,  B22F10/368 ,  B22F12/41 ,  B22F12/44 ,  B33Y10/00 ,  H01J37/09 ,  H01J37/21 ,  H01J37/305 ,  B22F12/00 ,  B22F12/49 ,  B33Y30/00 ,  B33Y50/02

Abstract: An apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together with an electron beam from an electron beam source so as to form the article according to a computer model thereof. The apparatus includes a chamber a chamber having a first section and a second section openly connected to each other. The first section is configured to receive the individual layers of powder material. The second section comprising an electron beam source, an electromagnetic focus coil having an axially extending, and a reflector coil. The electron beam source is configured to emit an electron beam to fuse the individual layers of powder material. The reflector coil is arranged radially outside the electromagnetic focus coil. The direction of windings of the reflector coil is opposite a direction of windings of the electromagnetic focus coil.

公开(公告)号：US20220001452A1

公开(公告)日：2022-01-06

申请号：US17296590

申请日：2019-03-01

Applicant: Arcam AB

Inventor： Kristofer Karlsson ,  Safdar Ali

IPC: B22F10/368 ,  B22F10/28 ,  B22F10/85 ,  B22F12/41 ,  H01J37/21 ,  H01J37/305 ,  H01J37/09

Abstract: An apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together with an electron beam from an electron beam source so as to form the article according to a computer model thereof. The apparatus includes a chamber a chamber having a first section and a second section openly connected to each other. The first section is configured to receive the individual layers of powder material. The second section comprising an electron beam source, an electromagnetic focus coil having an axially extending, and a reflector coil. The electron beam source is configured to emit an electron beam to fuse the individual layers of powder material. The reflector coil is arranged radially outside the electromagnetic focus coil. The direction of windings of the reflector coil is opposite a direction of windings of the electromagnetic focus coil.