公开(公告)号：US10981222B2

公开(公告)日：2021-04-20

申请号：US16468499

申请日：2017-12-05

申请人： Kobe Steel, Ltd.

发明人： Yuzo Morikawa ,  Daisuke Matsuwaka ,  Hitoshi Ishida ,  Shushi Ikeda

IPC分类号： B22D7/00 ,  B22D21/06 ,  B22D27/04 ,  B22D13/00 ,  B22D18/06 ,  F27B14/06 ,  F27B14/08

摘要： A casting method of an active metal includes, in an induction melting furnace using a water-cooled crucible, tapping a molten metal into a mold from a tapping hole provided at a bottom of the water-cooled copper crucible to cast an ingot of the active metal. In conducting the casting under a casting condition in which the ingot has a diameter (D) of 10 mm or more and a ratio (H/D) of an ingot height H to the ingot diameter D of 1.5 or more and a weight of the molten metal tapped in the casting is 200 kg or less, a temperature of the molten metal in the casting is set to be higher than the melting point of the active metal and a casting velocity V (mm/sec) is controlled to satisfy V≤0.1H in relation with the ingot height H by adjusting an opening diameter of the tapping hole.

公开(公告)号：US10946440B2

公开(公告)日：2021-03-16

申请号：US15832382

申请日：2017-12-05

申请人： Almex USA, Inc.

发明人： Ravindra V. Tilak ,  Rodney W. Wirtz ,  Ronald M. Streigle

IPC分类号： B22D27/04 ,  B22D11/049 ,  B22D11/14 ,  B22D11/00 ,  B22D7/00 ,  B22D11/16 ,  B22D11/18 ,  B22D27/00 ,  B22D30/00 ,  B22D46/00 ,  C22C21/00

摘要： Steam exhaust ports are located around a perimeter of a direct chill casting pit, at various locations from below the top of the pit to the pit bottom to rapidly remove steam from the casting pit with addition of dry excess air. Gas introduction ports are also located around a perimeter of the casting pit and configured to introduce an inert gas into the casting pit interior.

公开(公告)号：US10933565B2

公开(公告)日：2021-03-02

申请号：US15879171

申请日：2018-01-24

申请人： SURFACE GENERATION LIMITED

发明人： Ben Halford

IPC分类号： B29C33/04 ,  B29C35/02 ,  B29C35/04 ,  B29C33/38 ,  B29C33/02 ,  B29C35/16 ,  B22D27/04 ,  B29C45/73 ,  B29C45/26 ,  B29C45/27 ,  F28D15/00 ,  B29C33/30

摘要： A tool (100) comprises a plurality of layers (102, 104, 106) which are arranged to provide a thermally agile tool face (110) and to protect control circuitry and delicate components (150) from excessive temperatures.

公开(公告)号：US10933466B2

公开(公告)日：2021-03-02

申请号：US15595028

申请日：2017-05-15

申请人： Rolls-Royce Corporation

发明人： Charles Alan Bulgrin ,  Carl R. Russo ,  Matthew T. Kush

IPC分类号： B22D25/02 ,  B22D27/04 ,  B22C9/10 ,  B22C1/00 ,  B22C7/00 ,  B22C9/24 ,  B22D21/00 ,  B22D29/00 ,  F01D9/02 ,  F01D25/12

摘要： A method for fabricating a cast component with a cooling channel is provided. The method includes forming a shell mold over a pattern-ceramic matrix composite (CMC) elongated core arrangement to define a cavity in the shell mold. The pattern-CMC elongated core arrangement includes a pattern-forming material with a CMC elongated core disposed therein. The pattern-forming material in the cavity is replaced with metal via a casting process to form the cast component with the CMC elongated core disposed therein defining the cooling channel. The CMC elongated core is removed from the cast component to open the cooling channel for fluid communication.

公开(公告)号：US10907270B2

公开(公告)日：2021-02-02

申请号：US16989436

申请日：2020-08-10

申请人： Raytheon Technologies Corporation

发明人： Joseph V. Mantese ,  Thomas Anthony Rebbecchi ,  Ryan C. Breneman ,  Andrew Boyne ,  John Joseph Marcin ,  Dustin W. Davis ,  David Ulrich Furrer ,  James Tilsley Auxier

IPC分类号： B22D27/02 ,  B22D27/04 ,  C30B11/00 ,  H05B6/08 ,  H05B6/44 ,  F27B14/06 ,  H05B6/36 ,  F27B14/14 ,  F27D21/00

摘要： A process for directional solidification of a cast part comprises energizing a primary inductive coil coupled to a chamber having a mold containing a material; energizing a primary inductive coil within the chamber to heat the mold via radiation from a susceptor, wherein the resultant electromagnetic field partially leaks through the susceptor coupled to the chamber between the primary inductive coil and the mold; determining a magnetic flux profile of the electromagnetic field; sensing a magnetic flux leakage past the susceptor within the chamber; generating a control field from a secondary compensation coil coupled to the chamber, wherein the control field controls the magnetic flux experienced by the cast part; and casting the material within the mold under the controlled degree of flux leakage.

公开(公告)号：US20200290117A1

公开(公告)日：2020-09-17

申请号：US16816447

申请日：2020-03-12

申请人： General Electric Company

发明人： Douglas Gerard Konitzer ,  Brian David Przeslawski ,  Joshua Leigh Miller

IPC分类号： B22D27/04 ,  B22D27/20 ,  B22D19/14

摘要： Methods for creating a cast component, along with the resulting cast components, are provided. The method may include heating a mold having a cavity therein; supplying a first molten metal material into the cavity of the mold such that the first molten metal material is directed to a first portion of the cavity of the mold; supplying a second molten metal material into the cavity of the mold such that the second molten metal material is directed to a second portion of the cavity of the mold, wherein the first molten metal material is compositionally different than the second molten metal material; and thereafter, allowing the first molten metal material and the second molten metal material to form the cast component.

公开(公告)号：US20200238369A1

公开(公告)日：2020-07-30

申请号：US16631650

申请日：2018-07-09

申请人： UNIVERSITE GRENOBLE ALPES ,  INSTITUT POLYTECHNIQUE DE GRENOBLE

发明人： Sébastien GRAVIER ,  Georges KAPELSKI

IPC分类号： B22D5/02 ,  B22D11/06 ,  B22D27/04 ,  B22D27/15 ,  B22D39/06

摘要： A device and method for producing metal slugs, in which: a movable support has a plurality of cavities separated by partition walls, such that the cavities travel over a path, a feeding means is positioned above a location on said path and is capable of forming a stream of molten metal, flowing under the effect of gravity, such that, during the continuous movement of the movable support, the continuous stream of molten metal from the feeding means is divided or fragmented into slugs formed successively in said cavities, under the effect of said partition walls.

公开(公告)号：US10711617B2

公开(公告)日：2020-07-14

申请号：US16108429

申请日：2018-08-22

申请人： Howmet Corporation

发明人： Rajeev Naik

IPC分类号： F01D5/14 ,  B22D27/04 ,  B22D25/02 ,  B22D30/00

摘要： A casting method and apparatus are provided for casting a near-net shape article, such as for example a gas turbine engine blade or vane having a variable cross-section along its length. A molten metallic melt is provided in a heated mold having an article-shaped mold cavity with a shape corresponding to that of the article to be cast. The melt-containing mold and mold heating furnace are relatively moved to withdraw the melt-containing mold from the furnace through an active cooling zone where cooling gas is directed against the exterior of the mold to actively extract heat. At least one of the mold withdrawal rate, the cooling gas mass flow rate, and mold temperature are adjusted at the active cooling zone as the melt-containing mold is withdrawn through the active cooling zone to produce an equiaxed grain microstructure along at least a part of the length of the article.

公开(公告)号：US10661333B2

公开(公告)日：2020-05-26

申请号：US16022716

申请日：2018-06-29

申请人： Cheng-Kuan Wu

发明人： Cheng-Kuan Wu

IPC分类号： B22C13/08 ,  B22C9/08 ,  B33Y80/00 ,  B22D27/04 ,  B33Y10/00 ,  B28B1/00

摘要： A casting method using combined 3D printed shell mold and the combined shell mold used in the method. The method consists of shell mold making and casting steps. The shell mold is constructed by combination. First, the 3D printer at least prints out a runner part and several pattern die parts for molding products. In the print run, the first interfaces corresponding to the quantity of pattern die parts are printed out integrally on the runner part. The second interfaces corresponding to the first interfaces are formed on the pattern die parts. Afterwards, the first interfaces and the second interfaces are butted, the primary runner in runner part is connected to the die cavities in pattern die parts, the runner part and pattern die parts are combined to form a shell mold for casting multiple products at a time.

公开(公告)号：US10576535B2

公开(公告)日：2020-03-03

申请号：US16305326

申请日：2017-06-01

申请人： SAFRAN ,  SAFRAN AIRCRAFT ENGINES

发明人： Ngadia Taha Niane ,  Saïd Boukerma ,  Serge Dillenseger ,  Julien Gelebart ,  David Grange ,  Jean-Claude Marcel Auguste Hanny ,  Philippe Metron

IPC分类号： B22C9/22 ,  B22C9/04 ,  B22D27/04

摘要： A ceramic material mold for use in molding a turbine engine blade from a molten metal, the blade including a root, an inner platform, an airfoil, and an outer platform, and the mold including a cavity having the shape of the blade, and an auxiliary grain duct including a first segment and a second segment that is an extension of the first segment, the first segment opening out at one end into a first portion of the cavity forming the root of the blade, and at another end into a second portion of the cavity forming a lip of the inner platform of the blade, the second segment opening out at one end into the second portion of the cavity, and at another end into a third portion of the cavity forming a lip of the outer platform of the blade.