公开(公告)号：US20180133800A1

公开(公告)日：2018-05-17

申请号：US15849937

申请日：2017-12-21

申请人： TRUMPF Laser- und Systemtechnik GmbH

发明人： Markus Pieger ,  Stefan Weber

IPC分类号： B22F3/105 ,  B29C64/245 ,  B29C64/205 ,  B29C64/153

CPC分类号： B22F3/1055 ,  B22F2003/1056 ,  B22F2999/00 ,  B28B1/001 ,  B29C64/00 ,  B29C64/153 ,  B29C64/20 ,  B29C64/205 ,  B29C64/245 ,  B33Y10/00 ,  B33Y30/00 ,  Y02P10/295 ,  B22F2203/05 ,  B22F2203/11

摘要： This disclosure features construction cylinder arrangements for machines for producing three-dimensional (3D) objects in layers by laser sintering or laser melting powdered material. These arrangements include a base member and a piston that can be displaced along a central axis of the base member at an inner side of the base member, wherein the piston has at the upper side thereof a substrate for growing the 3D objects and wherein the base member includes an insulation member that forms at least the inner side of the base member, wherein the insulation member includes a material having a specific thermal conductivity λIK, with λIK≤3W/(m*K). The piston can be constructed with an upper piston portion and a lower piston portion, wherein the upper portion includes the substrate and the lower portion includes a cooling device. The construction cylinder arrangements have improved gas-tight sealing even at high temperatures, for example, above 500° C.