公开(公告)号：US20210206081A1

公开(公告)日：2021-07-08

申请号：US16074551

申请日：2017-03-14

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Michael G. MONROE ,  Pavel KORNILOVICH ,  Andrew QUEISSER ,  Glenn HADDICK

IPC: B29C64/307 ,  B29C64/393 ,  B29C64/264

Abstract: A material development tool includes a first plate and a second plate. The first plate has an indentation of a predetermined depth. The second plate having an opening for receiving build material when placed on the first plate and is removable from the first plate. A recoater is used to move and spread the build material within the indentation of the first plate.

公开(公告)号：US20210197269A1

公开(公告)日：2021-07-01

申请号：US16077770

申请日：2017-02-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vladek KASPERCHIK ,  Mohammed S. SHAARAWI ,  Michael G. MONROE ,  David Michael INGLE

IPC: B22F10/14 ,  B33Y70/10 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/165 ,  B29C64/209 ,  B29C64/295 ,  B22F3/10

Abstract: In a three-dimensional (3D) printing method example, a metallic build material is applied. A binder fluid is selectively applied on at least a portion of the metallic build material. The binder fluid includes a liquid vehicle and polymer particles dispersed in the liquid vehicle. The application of the metallic build material and the selective application of the binder fluid are repeated to create a patterned green part. The patterned green part is heated to at about a melting point of the polymer particles to activate the binder fluid and create a cured green part. The cured green part is heated to a thermal decomposition temperature of the polymer particles to create an at least substantially polymer-free gray part. The at least substantially polymer-free gray part is heated to a sintering temperature to form a metallic part.