公开(公告)号：US20240123686A1

公开(公告)日：2024-04-18

申请号：US18484693

申请日：2023-10-11

Applicant: Stratasys Powder Production Ltd.

Inventor： Gianluca Dorini ,  Christoffer Raad Petersen ,  Torben Lange ,  Anders Hartmann ,  David Armand ,  Kristian Noergaard

IPC: B29C64/295 ,  B29C64/153 ,  B29C64/343 ,  B29C64/386

CPC classification number: B29C64/295 ,  B29C64/153 ,  B29C64/343 ,  B29C64/386 ,  B33Y10/00

Abstract: A method of operating an apparatus for the layerwise manufacture of 3D objects. The method includes two or more operational cycles of a warm up phase, starting from ambient, followed by a build phase and a cooling phase. The warm up phase and the build phase each include a layer cycle of: (a) dosing build material to the work surface; (b) distributing a portion of the dosed amount over a build area; (c) heating the dosed amount; and (d) monitoring a temperature of the build material to determine a thermal state. The build phase includes melting layer-specific regions. These steps are repeated until the warm up and build phases are completed. A property of the subsequent warm up phases is determined such that the duration of a subsequent warm up phase is shorter than the duration of a preceding warm up phase.