公开(公告)号：US20180161854A1

公开(公告)日：2018-06-14

申请号：US15377728

申请日：2016-12-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： James Herbert DEINES ,  Brian David PRZESLAWSKI ,  Michael John MCCARREN ,  Douglas Gerard KONITZER ,  Mark Willard MARUSKO ,  Xi YANG

IPC: B22C9/22 ,  B22D29/00 ,  B22C9/10 ,  B22C9/04 ,  B22C7/02 ,  B29C67/00 ,  B28B1/00 ,  B33Y10/00 ,  B33Y80/00

Abstract: The present disclosure generally relates to integrated core-shell investment casting molds that provide a filament structure corresponding to a cooling hole pattern in the surface of the turbine blade or stator vane, which provide a leaching pathway for the core portion after metal casting. The invention also relates to core filaments that can be used to supplement the leaching pathway, for example in a core tip portion of the mold.

公开(公告)号：US20180161853A1

公开(公告)日：2018-06-14

申请号：US15377711

申请日：2016-12-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： James Herbert DEINES ,  Brian David PRZESLAWSKI ,  Michael John MCCARREN ,  Gregory Terrence GARAY ,  Douglas Gerard KONITZER ,  Mark Willard MARUSKO ,  Xi YANG ,  Brian Patrick PETERSON

IPC: B22C9/22 ,  B22D29/00 ,  B22C9/10 ,  B22C9/04 ,  B22C7/02 ,  B29C67/00 ,  B28B1/00 ,  B33Y10/00 ,  B33Y80/00

Abstract: The present disclosure generally relates to integrated core-shell investment casting molds including a main core portion, a core tip portion, and a shell portion with at least one cavity between the core portion and the shell portion. The cavity defines the shape of a cast component upon casting and removal of the ceramic mold. These molds also provide filament structures corresponding to cooling hole patterns in the surface of the turbine blade or the stator vane, which provide a leaching pathway for the core portion after metal casting. At least two ceramic tip filaments connect the core tip portion and the shell portion and eliminate the need for tip pins or a shell lock to hold the tip plenum core in place during casting. The invention also relates to core filaments that can be used to supplement the leaching pathway, for example in a core tip portion of the mold.