公开(公告)号：US20220347741A1

公开(公告)日：2022-11-03

申请号：US17866387

申请日：2022-07-15

Applicant: Raytheon Technologies Corporation

Inventor： John J. Marcin, JR. ,  Alan D. Cetel ,  Mario P. Bochiechio ,  Reade R. Clemens

IPC: B22D1/00 ,  B22D23/00 ,  B22D18/06 ,  B22D21/02

Abstract: An apparatus for countergravity casting a metallic material, comprises: a crucible for holding melted metallic material; a casting chamber for containing a mold; a fill tube capable of extending into the crucible to communicate melted metallic material to the casting chamber; a gas source coupled a headspace of the melting vessel to allow the gas source to pressurize said headspace to establish a pressure differential to force the melted metallic material upwardly through said fill tube into said mold; and means for gettering sulfur.

公开(公告)号：US11433452B2

公开(公告)日：2022-09-06

申请号：US16599646

申请日：2019-10-11

Applicant: Raytheon Technologies Corporation

Inventor： John J. Marcin, Jr. ,  Alan D. Cetel ,  Mario P. Bochiechio ,  Reade R. Clemens

IPC: B22D1/00 ,  B22D18/04 ,  B22D18/06 ,  B22D23/00 ,  B22C9/08 ,  B22D21/02 ,  C22B9/02

Abstract: An apparatus for countergravity casting a metallic has: a crucible for holding melted metallic material; a casting chamber for containing a mold; a fill tube capable of extending into the crucible to communicate melted metallic material to the casting chamber; and a gas source coupled to a headspace of the melting vessel to allow the gas source to pressurize said headspace to establish a pressure differential to force the melted metallic material upwardly through said fill tube into the mold. Added sulfur-gettering particles subsequently filtered or sulfur-gettering material removes sulfur from the melted metallic material.

公开(公告)号：US11772152B2

公开(公告)日：2023-10-03

申请号：US17866387

申请日：2022-07-15

Applicant: Raytheon Technologies Corporation

Inventor： John J. Marcin, Jr. ,  Alan D. Cetel ,  Mario P. Bochiechio ,  Reade R. Clemens

IPC: B22D1/00 ,  B22D18/04 ,  B22D18/06 ,  B22D21/02 ,  B22D23/00 ,  C22B9/02

CPC classification number: B22D1/00 ,  B22D1/007 ,  B22D18/06 ,  B22D21/025 ,  B22D23/00 ,  C22B9/02

Abstract: An apparatus for countergravity casting a metallic material, has: a crucible for holding melted metallic material; a casting chamber for containing a mold; a fill tube capable of extending into the crucible to communicate melted metallic material to the casting chamber; and a gas source coupled to a headspace of the melting vessel to allow the gas source to pressurize the headspace to establish a pressure differential to force the melted metallic material upwardly through the fill tube into the mold. Extraneous sulfur is prevented from entering the molten metal from the surrounding environment.