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UA81254C2 - Способ производства металлического изделия без какого-либо плавления - Google Patents

Способ производства металлического изделия без какого-либо плавления Download PDF

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Publication number
UA81254C2
UA81254C2 UAA200500344A UA2005000344A UA81254C2 UA 81254 C2 UA81254 C2 UA 81254C2 UA A200500344 A UAA200500344 A UA A200500344A UA 2005000344 A UA2005000344 A UA 2005000344A UA 81254 C2 UA81254 C2 UA 81254C2
Authority
UA
Ukraine
Prior art keywords
metal
mixture
precursor compounds
metallic precursor
melting
Prior art date
Application number
UAA200500344A
Other languages
English (en)
Ukrainian (uk)
Inventor
Ендрю Філіп Вудфілд
Ерік Аллен Отт
Кліффорд Ерл Шемблен
Original Assignee
Дженерал Електрік Компані
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 Дженерал Електрік Компані filed Critical Дженерал Електрік Компані
Publication of UA81254C2 publication Critical patent/UA81254C2/ru

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00Obtaining refractory metals
    • C22B34/10Obtaining titanium, zirconium or hafnium
    • C22B34/12Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1295Refining, melting, remelting, working up of titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/001Starting from powder comprising reducible metal compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/16Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00Obtaining refractory metals
    • C22B34/10Obtaining titanium, zirconium or hafnium
    • C22B34/12Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1263Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds, e.g. by reduction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02Compacting only
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/06Alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Forging (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Chemically Coating (AREA)

Abstract

Металлическое изделие (30), которое содержит металлические составные элементы, изготавливают из смеси неметаллических соединений-предшественников, содержащих металлические составляющие. Смесь неметаллических соединений-предшественников химически восстанавливают с образованием исходного металлического материала без плавления исходного металлического материала. Исходный металлический материал уплотняют с образованием уплотненного металлического изделия (20) без плавления исходного металлического материала и без плавления консолидированного металлического изделия (20).
UAA200500344A 2002-06-14 2003-12-06 Способ производства металлического изделия без какого-либо плавления UA81254C2 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/172,218 US7329381B2 (en) 2002-06-14 2002-06-14 Method for fabricating a metallic article without any melting
PCT/US2003/018700 WO2003106081A1 (en) 2002-06-14 2003-06-12 Method for fabricating a metallic article without any melting

Publications (1)

Publication Number Publication Date
UA81254C2 true UA81254C2 (ru) 2007-12-25

Family

ID=29732989

Family Applications (1)

Application Number Title Priority Date Filing Date
UAA200500344A UA81254C2 (ru) 2002-06-14 2003-12-06 Способ производства металлического изделия без какого-либо плавления

Country Status (9)

Country Link
US (2) US7329381B2 (ru)
EP (2) EP2281647B1 (ru)
JP (2) JP5025085B2 (ru)
CN (2) CN1658990A (ru)
AU (2) AU2003245482B2 (ru)
CA (1) CA2488993C (ru)
RU (2) RU2633418C2 (ru)
UA (1) UA81254C2 (ru)
WO (1) WO2003106081A1 (ru)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7442227B2 (en) 2001-10-09 2008-10-28 Washington Unniversity Tightly agglomerated non-oxide particles and method for producing the same
US7410610B2 (en) * 2002-06-14 2008-08-12 General Electric Company Method for producing a titanium metallic composition having titanium boride particles dispersed therein
US7416697B2 (en) 2002-06-14 2008-08-26 General Electric Company Method for preparing a metallic article having an other additive constituent, without any melting
US7329381B2 (en) * 2002-06-14 2008-02-12 General Electric Company Method for fabricating a metallic article without any melting
US7897103B2 (en) 2002-12-23 2011-03-01 General Electric Company Method for making and using a rod assembly
US7001443B2 (en) 2002-12-23 2006-02-21 General Electric Company Method for producing a metallic alloy by the oxidation and chemical reduction of gaseous non-oxide precursor compounds
US7727462B2 (en) * 2002-12-23 2010-06-01 General Electric Company Method for meltless manufacturing of rod, and its use as a welding rod
US6955703B2 (en) * 2002-12-26 2005-10-18 Millennium Inorganic Chemicals, Inc. Process for the production of elemental material and alloys
US7531021B2 (en) 2004-11-12 2009-05-12 General Electric Company Article having a dispersion of ultrafine titanium boride particles in a titanium-base matrix
US20070017319A1 (en) * 2005-07-21 2007-01-25 International Titanium Powder, Llc. Titanium alloy
US20070079908A1 (en) 2005-10-06 2007-04-12 International Titanium Powder, Llc Titanium boride
US9028329B2 (en) 2006-04-13 2015-05-12 Igt Integrating remotely-hosted and locally rendered content on a gaming device
US8992304B2 (en) 2006-04-13 2015-03-31 Igt Methods and systems for tracking an event of an externally controlled interface
US8784196B2 (en) 2006-04-13 2014-07-22 Igt Remote content management and resource sharing on a gaming machine and method of implementing same
US7465333B1 (en) * 2006-08-17 2008-12-16 Gm Global Technology Operations, Inc. Cavitation process for products from precursor halides
US7455713B1 (en) * 2006-08-17 2008-11-25 Gm Global Technology Operations, Inc. Cavitation process for titanium products from precursor halides
US9311774B2 (en) 2006-11-10 2016-04-12 Igt Gaming machine with externally controlled content display
US20090156303A1 (en) 2006-11-10 2009-06-18 Igt Bonusing Architectures in a Gaming Environment
US7790631B2 (en) * 2006-11-21 2010-09-07 Intel Corporation Selective deposition of a dielectric on a self-assembled monolayer-adsorbed metal
US8120114B2 (en) 2006-12-27 2012-02-21 Intel Corporation Transistor having an etch stop layer including a metal compound that is selectively formed over a metal gate
WO2009012455A1 (en) 2007-07-18 2009-01-22 Oxane Materials, Inc. Proppants with carbide and/or nitride phases
US8206488B2 (en) * 2008-10-31 2012-06-26 General Electric Company Fluoride ion cleaning method
KR101127209B1 (ko) 2009-12-29 2012-03-29 재단법인 포항산업과학연구원 반응층 생성물 분산처리장치 및 방법
CN102127640B (zh) * 2011-04-20 2012-10-17 攀枝花学院 生产中钒铁的方法
RU2606669C2 (ru) * 2013-09-27 2017-01-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" Способ получения сплава, состоящего из титана, железа, хрома и циркония, из водной суспензии частиц руд, содержащих соединения титана, железа, хрома и циркония, и устройство для его осуществления
RU2567768C2 (ru) * 2013-09-27 2015-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" Способ получения сплава на основе титана из водной суспензии частиц руд, содержащих соединения титана, и устройство для его осуществления
RU2606670C2 (ru) * 2013-09-27 2017-01-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" Способ получения сплава, содержащего титан, железо, хром и кремний, из водной суспензии частиц руд, содержащих соединения титана, железа, хрома и кремния, и устройство для его осуществления
CN104858430A (zh) 2014-02-25 2015-08-26 通用电气公司 三维零件的制造方法
US10343392B2 (en) 2015-08-27 2019-07-09 General Electric Company Powder-bed additive manufacturing devices and methods
RU2634562C2 (ru) * 2015-12-11 2017-10-31 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" Способ получения "суперсплава" на основе титана, алюминия, железа, хрома, меди и кремния из водяной суспензии частиц, содержащей соединения этих элементов руды, и устройство для его осуществления

Family Cites Families (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828199A (en) * 1950-12-13 1958-03-25 Nat Res Corp Method for producing metals
DE1129710B (de) 1956-02-08 1962-05-17 Dominion Magnesium Ltd Verfahren zur Herstellung von Titanlegierungen in Pulverform
US2799570A (en) * 1956-04-10 1957-07-16 Republic Steel Corp Process of making parts by powder metallurgy and preparing a powder for use therein
US2937979A (en) * 1957-05-10 1960-05-24 Horizons Titanium Corp Electrolytic process
GB883429A (en) 1959-06-26 1961-11-29 Mallory Metallurg Prod Ltd Improvements in and relating to the manufacture of electrical contact or welding electrode materials
FR1443968A (fr) * 1965-04-08 1966-07-01 Onera (Off Nat Aerospatiale) Perfectionnements apportés aux procédés pour l'élaboration de poudres métalliques et aux poudres correspondantes
US3501287A (en) * 1968-07-31 1970-03-17 Mallory & Co Inc P R Metal-metal oxide compositions
BE782832A (fr) * 1971-05-06 1972-08-16 Paris Rene A Procede chimique de fabrication de metaux et alliages metalliques
US3736132A (en) * 1971-12-17 1973-05-29 Steel Corp Method for producing refractory metals
US4282195A (en) * 1975-02-03 1981-08-04 Ppg Industries, Inc. Submicron titanium boride powder and method for preparing same
US4101713A (en) * 1977-01-14 1978-07-18 General Electric Company Flame spray oxidation and corrosion resistant superalloys
DE3017782C2 (de) * 1980-05-09 1982-09-30 Th. Goldschmidt Ag, 4300 Essen Verfahren zur Herstellung von sinterfähigen Legierungspulvern auf der Basis von Titan
JPS597765B2 (ja) * 1980-09-13 1984-02-21 昭宣 吉澤 微粉末金属の製造方法
US4415528A (en) * 1981-03-20 1983-11-15 Witec Cayman Patents, Limited Method of forming shaped metal alloy parts from metal or compound particles of the metal alloy components and compositions
JPS57181367A (en) * 1981-04-08 1982-11-08 Furukawa Electric Co Ltd:The Sintered high-v high-speed steel and its production
US4512826A (en) * 1983-10-03 1985-04-23 Northeastern University Precipitate hardened titanium alloy composition and method of manufacture
US4999336A (en) * 1983-12-13 1991-03-12 Scm Metal Products, Inc. Dispersion strengthened metal composites
US4525206A (en) * 1983-12-20 1985-06-25 Exxon Research & Engineering Co. Reduction process for forming powdered alloys from mixed metal iron oxides
US4687632A (en) * 1984-05-11 1987-08-18 Hurd Frank W Metal or alloy forming reduction process and apparatus
US4915905A (en) * 1984-10-19 1990-04-10 Martin Marietta Corporation Process for rapid solidification of intermetallic-second phase composites
US4622079A (en) * 1985-03-22 1986-11-11 General Electric Company Method for the dispersion of hard alpha defects in ingots of titanium or titanium alloy and ingots produced thereby
FR2582019B1 (fr) * 1985-05-17 1987-06-26 Extramet Sa Procede pour la production de metaux par reduction de sels metalliques, metaux ainsi obtenus et dispositif pour sa mise en oeuvre
US4714587A (en) * 1987-02-11 1987-12-22 The United States Of America As Represented By The Secretary Of The Air Force Method for producing very fine microstructures in titanium alloy powder compacts
US4731111A (en) * 1987-03-16 1988-03-15 Gte Products Corporation Hydrometallurical process for producing finely divided spherical refractory metal based powders
EP0290820B1 (de) * 1987-05-13 1994-03-16 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Verfahren zur Herstellung dispersionsgehärteter Metallegierungen
JPH01184203A (ja) 1988-01-19 1989-07-21 Mitsubishi Metal Corp 射出成形用合金粉末
SU1582683A1 (ru) 1988-05-10 1996-09-10 Соликамский магниевый завод Способ получения сплавов титана
US4906436A (en) * 1988-06-27 1990-03-06 General Electric Company High strength oxidation resistant alpha titanium alloy
JP3359030B2 (ja) * 1988-12-22 2002-12-24 アドバンスト ナノ テクノロジィーズ プロプライエタリ リミテッド 金属類、合金類及びセラミック材料類の製造法
JPH0747787B2 (ja) * 1989-05-24 1995-05-24 株式会社エヌ・ケイ・アール チタン粉末またはチタン複合粉末の製造方法
US5041262A (en) * 1989-10-06 1991-08-20 General Electric Company Method of modifying multicomponent titanium alloys and alloy produced
US5322666A (en) 1992-03-24 1994-06-21 Inco Alloys International, Inc. Mechanical alloying method of titanium-base metals by use of a tin process control agent
EP0728223B1 (en) 1993-11-08 1997-08-27 United Technologies Corporation Superplastic titanium by vapor deposition
US5431874A (en) * 1994-01-03 1995-07-11 General Electric Company High strength oxidation resistant titanium base alloy
US5958106A (en) 1994-08-01 1999-09-28 International Titanium Powder, L.L.C. Method of making metals and other elements from the halide vapor of the metal
CN1076759C (zh) * 1994-08-01 2001-12-26 国际钛金属粉末公司 制备金属和其它元素的方法
US5830288A (en) * 1994-09-26 1998-11-03 General Electric Company Titanium alloys having refined dispersoids and method of making
US6218026B1 (en) * 1995-06-07 2001-04-17 Allison Engine Company Lightweight high stiffness member and manufacturing method thereof
US5641580A (en) * 1995-10-03 1997-06-24 Osram Sylvania Inc. Advanced Mo-based composite powders for thermal spray applications
US6019812A (en) * 1996-10-22 2000-02-01 Teledyne Industries, Inc. Subatmospheric plasma cold hearth melting process
ATE267884T1 (de) * 1997-08-19 2004-06-15 Titanox Developments Ltd Auf titanlegierung basierender dispersionsgehärteter verbundwerkstoff
US6231636B1 (en) * 1998-02-06 2001-05-15 Idaho Research Foundation, Inc. Mechanochemical processing for metals and metal alloys
US6152982A (en) * 1998-02-13 2000-11-28 Idaho Research Foundation, Inc. Reduction of metal oxides through mechanochemical processing
FR2777020B1 (fr) * 1998-04-07 2000-05-05 Commissariat Energie Atomique Procede de fabrication d'un alliage ferritique - martensitique renforce par dispersion d'oxydes
US5930580A (en) 1998-04-30 1999-07-27 The United States Of America As Represented By The Secretary Of The Navy Method for forming porous metals
GB9812169D0 (en) 1998-06-05 1998-08-05 Univ Cambridge Tech Purification method
JP4611464B2 (ja) * 1998-06-12 2011-01-12 東邦チタニウム株式会社 金属粉末の製造方法
EP1101831B1 (en) * 1998-07-21 2003-06-25 Kabushiki Kaisha Toyota Chuo Kenkyusho Titanium-based composite material, method for producing the same and engine valve
US6251159B1 (en) * 1998-12-22 2001-06-26 General Electric Company Dispersion strengthening by nanophase addition
WO2000076698A1 (en) 1999-06-11 2000-12-21 Georgia Tech Research Corporation Metallic articles formed by reduction of nonmetallic articles and method of producing metallic articles
JP3597098B2 (ja) * 2000-01-21 2004-12-02 住友電気工業株式会社 合金微粉末とその製造方法、それを用いた成型用材料、スラリーおよび電磁波シールド材料
DE60130322T2 (de) * 2000-02-22 2008-06-12 Metalysis Ltd., Wath-Upon-Dearne Verfahren zur herstellung von metallschaum durch elektrolytische reduktion poröser oxidischer vorformen
DE10017282C2 (de) * 2000-04-06 2002-02-14 Omg Ag & Co Kg Verfahren zur Herstellung von Verbundpulver auf Basis Siler-Zinnoxid und deren Verwendung zur Herstellung von Kontaktwerkstoffen
DE10041194A1 (de) * 2000-08-23 2002-03-07 Starck H C Gmbh Verfahren zur Herstellung von Verbundbauteilen durch Pulver-Spritzgießen und dazu geeignete Verbundpulver
DE50101590D1 (de) * 2000-09-29 2004-04-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Wiederverwertung von aus thoriertem Wolfram bestehenden Gegenständen
GB0027929D0 (en) * 2000-11-15 2001-01-03 Univ Cambridge Tech Metal and alloy powders
US6635098B2 (en) * 2001-02-12 2003-10-21 Dynamet Technology, Inc. Low cost feedstock for titanium casting, extrusion and forging
JP2003029989A (ja) * 2001-07-16 2003-01-31 Matsushita Electric Ind Co Ltd 分散処理システムおよびジョブ分散処理方法
AUPS107102A0 (en) * 2002-03-13 2002-04-11 Bhp Billiton Innovation Pty Ltd Electrolytic reduction of metal oxides
KR100468216B1 (ko) * 2002-05-06 2005-01-26 국방과학연구소 텅스텐이 코팅된 텅스텐-구리 복합 분말의 제조 방법 및그의 용도
US7329381B2 (en) * 2002-06-14 2008-02-12 General Electric Company Method for fabricating a metallic article without any melting
US6921510B2 (en) * 2003-01-22 2005-07-26 General Electric Company Method for preparing an article having a dispersoid distributed in a metallic matrix
US6737017B2 (en) * 2002-06-14 2004-05-18 General Electric Company Method for preparing metallic alloy articles without melting
US7037463B2 (en) * 2002-12-23 2006-05-02 General Electric Company Method for producing a titanium-base alloy having an oxide dispersion therein
US6849229B2 (en) * 2002-12-23 2005-02-01 General Electric Company Production of injection-molded metallic articles using chemically reduced nonmetallic precursor compounds
US7727462B2 (en) 2002-12-23 2010-06-01 General Electric Company Method for meltless manufacturing of rod, and its use as a welding rod
US7001443B2 (en) * 2002-12-23 2006-02-21 General Electric Company Method for producing a metallic alloy by the oxidation and chemical reduction of gaseous non-oxide precursor compounds
US6968990B2 (en) * 2003-01-23 2005-11-29 General Electric Company Fabrication and utilization of metallic powder prepared without melting
US6926755B2 (en) 2003-06-12 2005-08-09 General Electric Company Method for preparing aluminum-base metallic alloy articles without melting
US6926754B2 (en) 2003-06-12 2005-08-09 General Electric Company Method for preparing metallic superalloy articles having thermophysically melt incompatible alloying elements, without melting

Also Published As

Publication number Publication date
AU2009202263B2 (en) 2012-04-26
US20070269333A1 (en) 2007-11-22
CN1658990A (zh) 2005-08-24
JP5025085B2 (ja) 2012-09-12
JP2005530039A (ja) 2005-10-06
RU2005100773A (ru) 2005-07-10
AU2003245482B2 (en) 2009-03-12
CA2488993A1 (en) 2003-12-24
JP5524257B2 (ja) 2014-06-18
US7655182B2 (en) 2010-02-02
EP2281647A1 (en) 2011-02-09
EP2281647B1 (en) 2018-08-15
CA2488993C (en) 2016-04-12
US20030230170A1 (en) 2003-12-18
AU2009202263A1 (en) 2009-07-02
US7329381B2 (en) 2008-02-12
JP2012132100A (ja) 2012-07-12
EP1519804A1 (en) 2005-04-06
EP1519804B1 (en) 2013-02-27
RU2633418C2 (ru) 2017-10-12
CN103212712A (zh) 2013-07-24
AU2003245482A1 (en) 2003-12-31
RU2010126661A (ru) 2012-01-10
WO2003106081A1 (en) 2003-12-24

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