WO2013028086A4 - Method for producing investment castings - Google Patents

Method for producing investment castings Download PDF

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Publication number
WO2013028086A4
WO2013028086A4 PCT/PL2012/000068 PL2012000068W WO2013028086A4 WO 2013028086 A4 WO2013028086 A4 WO 2013028086A4 PL 2012000068 W PL2012000068 W PL 2012000068W WO 2013028086 A4 WO2013028086 A4 WO 2013028086A4
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
liquid
polymer
ceramic
investment castings
Prior art date
Application number
PCT/PL2012/000068
Other languages
French (fr)
Other versions
WO2013028086A2 (en
WO2013028086A3 (en
Inventor
Edward CZEKAJ
Aleksander KARWIŃSKI
Original Assignee
Instytut Odlewnictwa
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 Instytut Odlewnictwa filed Critical Instytut Odlewnictwa
Priority to EP12772821.0A priority Critical patent/EP2744612B1/en
Priority to RU2014104995/02A priority patent/RU2579841C2/en
Priority to US14/237,360 priority patent/US20140190653A1/en
Priority to JP2014525961A priority patent/JP2014525839A/en
Priority to UAA201401353A priority patent/UA109823C2/en
Publication of WO2013028086A2 publication Critical patent/WO2013028086A2/en
Publication of WO2013028086A3 publication Critical patent/WO2013028086A3/en
Publication of WO2013028086A4 publication Critical patent/WO2013028086A4/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/045—Directionally solidified castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group

Abstract

A method for producing investment castings, preferably in ceramic moulds, from alloys based on Al, Mg, Cu, Zn and Fe, characterised in that the ceramic mould is baked at temperatures of 800-1000°C for 2-4 hours, then the mould is cooled to a temperature of 20-950°C and is held at this temperature for 10-40 minutes, then it is poured with liquid alloy overheated by from 50 to 200°C above the initial melting point and after a lapse of 10-100 seconds, the mould is immersed at a fixed or variable speed in a liquid cooling medium, which is a 1 -99 volume percent aqueous solution of liquid polymer at a temperature of 15-85°C. Preferably, the liquid polymer is a polymer of the PAG or PVP, or ACR, or PEO type. Preferably, the ceramic moulds made of aluminosilicate, or high alumina refractory materials, especially based on synthetic sand, for example Molochite, are used.

Claims

AMENDED CLAIMS received by the International Bureau on 15 April 2013 Patent claims
1. A method for producing investment castings, preferably in ceramic moulds, from alloys based on Al, Mg, Cu, Zn and Fe, wherein the said method is characterised in that the ceramic mould is baked at a temperature of 800- 1000°C for 2-4 hours, is cooled next to a temperature of 20-950°C, and is held at this temperature for 10-40 minutes and poured next with liquid alloy overheated by from 50 to 200°C above the initial melting point and after a lapse of 10-100 seconds, it is immersed at a fixed or variable speed in a liquid cooling medium, the said liquid cooling medium being a 1 -99 volume percent aqueous solution of liquid polymer at a temperature of 15-80°C.
2. A method for producing investment castings according to claim 1 , characterised in that the liquid polymer is a polymer of the PAG, or PVP, or ACR, or PEO type.
3. A method for producing investment castings according to claim 1 , characterised in that the ceramic moulds made of aluminosilicate or high alumina refractories, especially based on synthetic sand, for example Molochite, are used.
4. An aluminium alloy casting obtained by the method according to claims 1 -3.
5. A magnesium alloy casting obtained by the method according to claims 1 -3.
6. A cooper alloy casting obtained by the method according to claims 1 -3.
7. An iron alloy casting obtained by the method according to claims 1 -3.
PCT/PL2012/000068 2011-08-19 2012-08-10 Method for producing investment castings WO2013028086A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12772821.0A EP2744612B1 (en) 2011-08-19 2012-08-10 Method for producing investment castings
RU2014104995/02A RU2579841C2 (en) 2011-08-19 2012-08-10 Method of casting precise casts
US14/237,360 US20140190653A1 (en) 2011-08-19 2012-08-10 Method for producing investment castings
JP2014525961A JP2014525839A (en) 2011-08-19 2012-08-10 Investment casting manufacturing method
UAA201401353A UA109823C2 (en) 2011-08-19 2012-10-08 METHOD OF OBTAINING ACCURATE CASTINGS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.396030 2011-08-19
PL396030A PL216825B1 (en) 2011-08-19 2011-08-19 Method for producing the precision castings

Publications (3)

Publication Number Publication Date
WO2013028086A2 WO2013028086A2 (en) 2013-02-28
WO2013028086A3 WO2013028086A3 (en) 2013-04-18
WO2013028086A4 true WO2013028086A4 (en) 2013-06-13

Family

ID=47019130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2012/000068 WO2013028086A2 (en) 2011-08-19 2012-08-10 Method for producing investment castings

Country Status (7)

Country Link
US (1) US20140190653A1 (en)
EP (1) EP2744612B1 (en)
JP (1) JP2014525839A (en)
PL (1) PL216825B1 (en)
RU (1) RU2579841C2 (en)
UA (1) UA109823C2 (en)
WO (1) WO2013028086A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018221750A1 (en) * 2018-12-14 2020-06-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process and mold for making metal cast workpieces

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908733A (en) * 1973-10-26 1975-09-30 United Technologies Corp Method and apparatus for control of alloy in columnar grain castings
SU977108A1 (en) * 1981-04-07 1982-11-30 Предприятие П/Я М-5671 Method of producing casting by directional solidifying
DE3629079A1 (en) 1986-08-27 1988-03-03 Thyssen Industrie Method for the precision casting of castings in a ceramic shell mould
JPH02207942A (en) * 1989-02-06 1990-08-17 Kawasaki Steel Corp Production of casting mold for precision casting of high-chromium steel
DE4216870C2 (en) 1992-05-22 1994-08-11 Titan Aluminium Feingus Gmbh Process for the production of a metallic casting by the precision casting process
US5407001A (en) * 1993-07-08 1995-04-18 Precision Castparts Corporation Yttria-zirconia slurries and mold facecoats for casting reactive metals
JP2904398B2 (en) * 1994-10-07 1999-06-14 有限会社櫻井美術鋳造 Precision casting
US5975188A (en) * 1997-10-30 1999-11-02 Howmet Research Corporation Method of casting with improved detectability of subsurface inclusions
RU2123909C1 (en) * 1998-02-11 1998-12-27 Всероссийский научно-исследовательский институт авиационных материалов Method of producing castings with oriented crystallization and device for its embodiment
US6352101B1 (en) * 1998-07-21 2002-03-05 General Electric Company Reinforced ceramic shell mold and related processes
ES2245683T3 (en) * 2000-03-17 2006-01-16 Daniel James Duffey FUSION MOLD TO THE LOST WAX.
US6622774B2 (en) 2001-12-06 2003-09-23 Hamilton Sundstrand Corporation Rapid solidification investment casting
US7147031B2 (en) * 2002-09-20 2006-12-12 Alotech Ltd. Llc Lost pattern mold removal casting method and apparatus
RU2226449C1 (en) * 2002-11-18 2004-04-10 Цацулина Ирина Евгеньевна Method for casting parts with use of oriented crystallization and apparatus for performing the same
US7584778B2 (en) * 2005-09-21 2009-09-08 United Technologies Corporation Method of producing a castable high temperature aluminum alloy by controlled solidification
AT503391B1 (en) * 2006-04-04 2008-10-15 O St Feingussgesellschaft M B METHOD FOR MEASURING METALLIC SHAPES AND DEVICE THEREFOR
US20120186768A1 (en) * 2009-06-26 2012-07-26 Donald Sun Methods for forming faucets and fixtures
CA2707317C (en) * 2010-06-10 2015-04-07 Steven Kennerknecht Investment castings and process

Also Published As

Publication number Publication date
JP2014525839A (en) 2014-10-02
EP2744612B1 (en) 2015-10-21
PL216825B1 (en) 2014-05-30
EP2744612A2 (en) 2014-06-25
WO2013028086A2 (en) 2013-02-28
RU2014104995A (en) 2015-09-27
UA109823C2 (en) 2015-10-12
PL396030A1 (en) 2013-03-04
RU2579841C2 (en) 2016-04-10
US20140190653A1 (en) 2014-07-10
WO2013028086A3 (en) 2013-04-18

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