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DE69916983D1 - Process for manufacturing die-cast nickel-based superalloy parts - Google Patents

Process for manufacturing die-cast nickel-based superalloy parts

Info

Publication number
DE69916983D1
DE69916983D1 DE69916983T DE69916983T DE69916983D1 DE 69916983 D1 DE69916983 D1 DE 69916983D1 DE 69916983 T DE69916983 T DE 69916983T DE 69916983 T DE69916983 T DE 69916983T DE 69916983 D1 DE69916983 D1 DE 69916983D1
Authority
DE
Germany
Prior art keywords
based superalloy
manufacturing die
cast nickel
superalloy parts
disclosed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69916983T
Other languages
German (de)
Other versions
DE69916983T2 (en
Inventor
John Joseph Schirra
Ralph Giugno
Walter Frederick Gustafson
John Joseph Marcin Jr
Jeffrey William Samuelson
Delwyn Earle Norton
Jay John Nunes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RTX Corp
Original Assignee
United Technologies Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Application granted granted Critical
Publication of DE69916983D1 publication Critical patent/DE69916983D1/en
Publication of DE69916983T2 publication Critical patent/DE69916983T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/03Alloys based on nickel or cobalt based on nickel
    • C22C19/05Alloys based on nickel or cobalt based on nickel with chromium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/03Alloys based on nickel or cobalt based on nickel
    • C22C19/05Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/055Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/03Alloys based on nickel or cobalt based on nickel
    • C22C19/05Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/056Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/07Alloys based on nickel or cobalt based on cobalt
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/28Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00Metals
    • F05C2201/04Heavy metals
    • F05C2201/0433Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0466Nickel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Powder Metallurgy (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

A die cast article composed of nickel base superalloy IN 718 is disclosed. The microstructure is characterized by an absence of flowlines and includes a fine average grain size, e.g., ASTM 3 or smaller. A method of heat treating the articles is also disclosed. Exemplary articles include gas turbine engine components, such as blades, vanes, cases and seals. <IMAGE>
DE69916983T 1998-12-23 1999-12-23 Process for producing nickel-base die-cast superalloy parts Expired - Lifetime DE69916983T2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11375598P 1998-12-23 1998-12-23
US11356998P 1998-12-23 1998-12-23
US113569P 1998-12-23
US113755P 1998-12-23

Publications (2)

Publication Number Publication Date
DE69916983D1 true DE69916983D1 (en) 2004-06-09
DE69916983T2 DE69916983T2 (en) 2005-06-09

Family

ID=26811198

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69916983T Expired - Lifetime DE69916983T2 (en) 1998-12-23 1999-12-23 Process for producing nickel-base die-cast superalloy parts

Country Status (11)

Country Link
US (1) US20020005233A1 (en)
EP (1) EP1013781B1 (en)
JP (2) JP4125462B2 (en)
KR (1) KR100646718B1 (en)
CN (1) CN1111207C (en)
AT (1) ATE266103T1 (en)
DE (1) DE69916983T2 (en)
ES (1) ES2216453T3 (en)
IL (1) IL133580A (en)
RU (1) RU2235798C2 (en)
UA (1) UA70300A (en)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030056929A1 (en) * 2001-09-24 2003-03-27 Staley James T. Die casting of wrought aluminum alloys
FR2833332B1 (en) * 2001-12-07 2004-05-28 Renault GASKET FOR EXHAUST FLANGE
US6912984B2 (en) * 2003-03-28 2005-07-05 Eaton Corporation Composite lightweight engine poppet valve
EP1658913A1 (en) * 2004-11-19 2006-05-24 Siemens Aktiengesellschaft Casting method and casting article
US7378132B2 (en) * 2004-12-14 2008-05-27 Honeywell International, Inc. Method for applying environmental-resistant MCrAlY coatings on gas turbine components
RU2296168C2 (en) * 2005-04-06 2007-03-27 Государственное научное учреждение "Научно-исследовательский институт Энергетического машиностроения Московского государственного Технического университета им. Н.Э. Баумана Министерства образования Российской Федерации" НИИЭМ (МГТУ им. Баумана) Method of transfer of the solid metal into the state of plasticity and yielding
JP5109115B2 (en) * 2005-04-07 2012-12-26 国立大学法人 長崎大学 Nickel-base superalloy and manufacturing method thereof
US8557063B2 (en) * 2006-01-05 2013-10-15 General Electric Company Method for heat treating serviced turbine part
RU2309191C1 (en) * 2006-03-03 2007-10-27 Открытое акционерное общество "Композит" Method of treatment of cast parts made from high-temperature nickel alloys
US9322089B2 (en) * 2006-06-02 2016-04-26 Alstom Technology Ltd Nickel-base alloy for gas turbine applications
RU2325246C1 (en) * 2006-12-07 2008-05-27 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "САЛЮТ" (ФГУП "ММПП "САЛЮТ") Method of manufacture of workpiece for hollow vane of turbine of gas turbine engine
RU2344195C2 (en) * 2007-02-12 2009-01-20 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "Салют" Method of treatment of casts out of heat resistant alloy
WO2008088242A1 (en) * 2006-12-27 2008-07-24 Federalnoe Gosudarstvennoe Unitarnoe Predpriyatie 'moskovskoe Mashinostroitelnoe Proizvodstvennoe Predpriyatie 'salut' Composition and method for producing a nickel-based alloy and a method for treating castings made thereof
RU2361010C2 (en) * 2007-07-03 2009-07-10 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "Салют" Method of casts sealing made of nickel alloy
RU2353701C1 (en) * 2007-07-04 2009-04-27 Федеральное Государственное Унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ВИАМ) Method of products receiving from monocrystalline heat-resistant nickel alloys
US7950441B2 (en) * 2007-07-20 2011-05-31 GM Global Technology Operations LLC Method of casting damped part with insert
RU2361012C1 (en) * 2007-10-15 2009-07-10 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "Салют" Treatment method of cast made of heat-resistant nickel alloys for single-crystal foundaring
RU2361011C1 (en) * 2007-10-15 2009-07-10 Федеральное государственное унитарное предприятие "Московское машиностроительное производственное предприятие "Салют" Processing method of casts made of heat-resistant nickel alloys for single-crystal foundaring
WO2009067512A1 (en) * 2007-11-20 2009-05-28 Buhlerprince, Inc. Vacuum die casting machine and process
CN101469711A (en) * 2007-12-26 2009-07-01 上海三电贝洱汽车空调有限公司 Technique for processing sliding blade of rotary vane type compressor
CN101307402B (en) * 2008-07-04 2010-10-13 北京科技大学 A kind of ultra-fine-grained nickel-based superalloy and its preparation method
US8230899B2 (en) 2010-02-05 2012-07-31 Ati Properties, Inc. Systems and methods for forming and processing alloy ingots
US9267184B2 (en) 2010-02-05 2016-02-23 Ati Properties, Inc. Systems and methods for processing alloy ingots
US10207312B2 (en) 2010-06-14 2019-02-19 Ati Properties Llc Lubrication processes for enhanced forgeability
US8708659B2 (en) 2010-09-24 2014-04-29 United Technologies Corporation Turbine engine component having protective coating
US20120111525A1 (en) * 2010-11-05 2012-05-10 Bochiechio Mario P High temperature die casting apparatus and method therefor
US8784066B2 (en) * 2010-11-05 2014-07-22 United Technologies Corporation Die casting to produce a hybrid component
US20120111521A1 (en) * 2010-11-05 2012-05-10 Bullied Steven J Die casting of component having integral seal
US20120111526A1 (en) * 2010-11-05 2012-05-10 Bochiechio Mario P Die casting system and method utilizing high melting temperature materials
JP5216839B2 (en) 2010-12-02 2013-06-19 株式会社日立製作所 Ni-base heat-resistant alloy, gas turbine member, and turbine with excellent segregation characteristics
US8789254B2 (en) 2011-01-17 2014-07-29 Ati Properties, Inc. Modifying hot workability of metal alloys via surface coating
US8459331B2 (en) 2011-08-08 2013-06-11 Crucible Intellectual Property, Llc Vacuum mold
US8858868B2 (en) 2011-08-12 2014-10-14 Crucible Intellectual Property, Llc Temperature regulated vessel
US9925584B2 (en) * 2011-09-29 2018-03-27 United Technologies Corporation Method and system for die casting a hybrid component
US9302320B2 (en) 2011-11-11 2016-04-05 Apple Inc. Melt-containment plunger tip for horizontal metal die casting
JP5723078B2 (en) 2011-11-11 2015-05-27 クルーシブル インテレクチュアル プロパティ エルエルシーCrucible Intellectual Property Llc Dual plunger rod for controlled transfer in injection molding system
US20130133793A1 (en) * 2011-11-30 2013-05-30 Ati Properties, Inc. Nickel-base alloy heat treatments, nickel-base alloys, and articles including nickel-base alloys
US20130323522A1 (en) * 2012-06-05 2013-12-05 General Electric Company Cast superalloy pressure containment vessel
US9314839B2 (en) 2012-07-05 2016-04-19 Apple Inc. Cast core insert out of etchable material
US8701742B2 (en) 2012-09-27 2014-04-22 Apple Inc. Counter-gravity casting of hollow shapes
US9004151B2 (en) 2012-09-27 2015-04-14 Apple Inc. Temperature regulated melt crucible for cold chamber die casting
US8826968B2 (en) 2012-09-27 2014-09-09 Apple Inc. Cold chamber die casting with melt crucible under vacuum environment
US8833432B2 (en) 2012-09-27 2014-09-16 Apple Inc. Injection compression molding of amorphous alloys
US8813816B2 (en) 2012-09-27 2014-08-26 Apple Inc. Methods of melting and introducing amorphous alloy feedstock for casting or processing
US8813817B2 (en) 2012-09-28 2014-08-26 Apple Inc. Cold chamber die casting of amorphous alloys using cold crucible induction melting techniques
US8813814B2 (en) 2012-09-28 2014-08-26 Apple Inc. Optimized multi-stage inductive melting of amorphous alloys
US8813813B2 (en) 2012-09-28 2014-08-26 Apple Inc. Continuous amorphous feedstock skull melting
US10197335B2 (en) 2012-10-15 2019-02-05 Apple Inc. Inline melt control via RF power
CN103014388B (en) * 2012-12-26 2014-12-10 中国科学院金属研究所 Large-tonnage low-cost ultraclean melting method of producing Inconel690 alloy
US9539636B2 (en) 2013-03-15 2017-01-10 Ati Properties Llc Articles, systems, and methods for forging alloys
US9445459B2 (en) 2013-07-11 2016-09-13 Crucible Intellectual Property, Llc Slotted shot sleeve for induction melting of material
US9925583B2 (en) 2013-07-11 2018-03-27 Crucible Intellectual Property, Llc Manifold collar for distributing fluid through a cold crucible
DE102014202457A1 (en) 2014-02-11 2015-08-13 Siemens Aktiengesellschaft Improved wear resistance of a high-temperature component through cobalt coating
US10011892B2 (en) * 2014-08-21 2018-07-03 Honeywell International Inc. Methods for producing alloy forms from alloys containing one or more extremely reactive elements and for fabricating a component therefrom
US9873151B2 (en) 2014-09-26 2018-01-23 Crucible Intellectual Property, Llc Horizontal skull melt shot sleeve
EP3351651B1 (en) * 2015-09-14 2022-01-05 Mitsubishi Power, Ltd. Turbine rotor blade manufacturing method
US10563293B2 (en) 2015-12-07 2020-02-18 Ati Properties Llc Methods for processing nickel-base alloys
CN106884100B (en) * 2015-12-16 2019-02-26 湖南科技大学 A kind of preparation method of nickel-aluminum-based complex phase alloy
ITUA20163944A1 (en) * 2016-05-30 2017-11-30 Nuovo Pignone Tecnologie Srl Process for making a component of a turbomachine, to a component obtainable consequently and turbomachine comprising the same / Process for obtaining a turbomachinery component, a component obtainable from it and a turbomachine which comprises it
PL3558211T3 (en) * 2016-12-23 2023-10-02 R.P. Scherer Technologies, Llc Multiple-fill/chamber softgel die
US11851320B2 (en) 2017-05-01 2023-12-26 The Johns Hopkins University Method of depositing nanotwinned nickel-molybdenum-tungsten alloys
DE102018117304A1 (en) * 2018-07-17 2020-01-23 Ald Vacuum Technologies Gmbh Device and method for levitation melting with tilted induction units
CN110923513B (en) * 2019-12-06 2021-01-08 北京钢研高纳科技股份有限公司 Vacuum induction melting process of GH4720Li alloy, GH4720Li alloy and aviation parts
US11878343B2 (en) * 2021-12-07 2024-01-23 Lockheed Martin Corporation Housing and method of preparing same using a hybrid casting-additive manufacturing process
CN114378273B (en) * 2022-01-20 2024-08-20 厦门市佳嘉达机械有限公司 Die casting die, die casting device and ultra-high speed die casting method
CN114921706B (en) * 2022-04-25 2023-08-01 西北工业大学 Modified nickel-based casting superalloy and preparation method thereof

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676225A (en) * 1970-06-25 1972-07-11 United Aircraft Corp Thermomechanical processing of intermediate service temperature nickel-base superalloys
US3791440A (en) * 1970-12-07 1974-02-12 R Cross Die casting method
JPS5316663A (en) * 1976-07-29 1978-02-15 Toshiba Machine Co Ltd Method for manufacture of watch case
JPS58947B2 (en) * 1978-07-06 1983-01-08 日産自動車株式会社 Die-casting equipment for heat-resistant impellers
US4888253A (en) * 1985-12-30 1989-12-19 United Technologies Corporation High strength cast+HIP nickel base superalloy
US5087305A (en) * 1988-07-05 1992-02-11 General Electric Company Fatigue crack resistant nickel base superalloy
JPH0364435A (en) * 1989-08-01 1991-03-19 Daido Steel Co Ltd Forging method for Ni-based superalloy
JP2922989B2 (en) * 1990-06-20 1999-07-26 財団法人電気磁気材料研究所 Precision resistance alloy having high electric resistance and low temperature coefficient and method for producing the same
JPH0633206A (en) * 1992-07-14 1994-02-08 Toshiba Corp Method for heat-treating ni-base alloy
JP3369627B2 (en) * 1993-04-08 2003-01-20 日立金属株式会社 Method of manufacturing fine crystal grain super heat resistant alloy member
DE4436670C2 (en) * 1993-10-27 2002-11-21 United Technologies Corp Pratt Objects made of nickel-based superalloys with improved machinability and method for producing a machined workpiece from such a superalloy
RU2060295C1 (en) * 1994-01-08 1996-05-20 Научно-производственное объединение энергетического машиностроения им. акад. В.П.Глушко Method for manufacture of products from age-hardenable alloys
DE4411228C2 (en) * 1994-03-31 1996-02-01 Krupp Vdm Gmbh High-temperature resistant nickel-based alloy and use of the same
US5505246A (en) * 1994-06-17 1996-04-09 Howmet Corporation Permanent mold or die casting of titanium-aluminum alloys
JPH08311626A (en) * 1995-05-17 1996-11-26 Japan Steel Works Ltd:The Super alloy material manufacturing method
US6070643A (en) * 1997-09-12 2000-06-06 Howmet Research Corporation High vacuum die casting

Also Published As

Publication number Publication date
EP1013781B1 (en) 2004-05-06
KR20000048339A (en) 2000-07-25
EP1013781A2 (en) 2000-06-28
US20020005233A1 (en) 2002-01-17
ES2216453T3 (en) 2004-10-16
ATE266103T1 (en) 2004-05-15
UA70300C2 (en) 2004-10-15
DE69916983T2 (en) 2005-06-09
IL133580A (en) 2004-05-12
JP4125462B2 (en) 2008-07-30
JP2000192179A (en) 2000-07-11
JP2000192208A (en) 2000-07-11
KR100646718B1 (en) 2006-11-17
RU2235798C2 (en) 2004-09-10
CN1279299A (en) 2001-01-10
CN1111207C (en) 2003-06-11
IL133580A0 (en) 2001-04-30
EP1013781A3 (en) 2000-07-05
UA70300A (en) 2004-10-15

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