CA2492579A1 - Method of heating casting mold - Google Patents

Method of heating casting mold Download PDF

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Publication number
CA2492579A1
CA2492579A1 CA002492579A CA2492579A CA2492579A1 CA 2492579 A1 CA2492579 A1 CA 2492579A1 CA 002492579 A CA002492579 A CA 002492579A CA 2492579 A CA2492579 A CA 2492579A CA 2492579 A1 CA2492579 A1 CA 2492579A1
Authority
CA
Canada
Prior art keywords
mold
wall
hot gas
temperature
mold cavity
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.)
Granted
Application number
CA002492579A
Other languages
French (fr)
Other versions
CA2492579C (en
Inventor
John A. Redemske
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.)
Metal Casting Technology Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2492579A1 publication Critical patent/CA2492579A1/en
Application granted granted Critical
Publication of CA2492579C publication Critical patent/CA2492579C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/043—Removing the consumable pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening

Abstract

A thermally efficient method for the heating a gas permeable wall of a bonded refractory mold wherein the mold wall (10) defines a mold cavity (10a) is heated by the transfer of heat from hot gas flowing inside of the mold cavity (10a) to the mold wall (10). Hot gas is flowed from a hot gas source (30) outside the mold through the mold cavity (10a) and gas permeable mold wall (10) to a lower pressure region exterior of the mold (10) to control temperature of an interior surface of the mold wall (10).

Claims (14)

1. A method of controlling temperature of a gas permeable mold wall forming a mold cavity of a bonded refractory mold, comprising flowing hot gas from a hot gas source through said mold cavity and said gas permeable mold wall to a region exterior of said mold.
2. The method of claim 1 wherein said region is at a pressure less than a pressure in said mold cavity.
3. The method of claim 1 wherein said mold wall includes a gas permeability effective to establish a pressure drop across said mold wall from said mold cavity toward said region.
4. The method of claim 3 wherein said pressure drop across said mold wall results in a substantially uniform flow of the gas through all areas of the gas permeable refractory mold.
5. The method of claim 1 where said mold wall is from about 1.0 mm to about 10 mm thick.
6. The method of claim 1 including surrounding said mold by a particulate support media.
7. The method of claim 1 wherein the temperature of said mold is adjusted by the control of the temperature of the gas flow through the mold.
8. The method of claim 1 including preheating said mold to an elevated temperature and reducing said elevated temperature to a lower temperature by flowing cooling gas through said mold cavity and said mold wall.
9. The method of claim 1 including increasing hot gas flow through said mold cavity and said mold wall to accelerate the heating of the bonded refractory mold wall.
10. The method of claim 1 wherein a thermal gradient extending from an interior surface of said mold wall into said particulate support media is established such that a loss of temperature of said mold wall is reduced after the hot gas flow is stopped and before a molten metal or alloy is cast in said mold cavity.
11. The method of claim 10 wherein a distance into said particulate support media is preheated to a desired temperature before casting said molten metal or alloy into said mold cavity.
12. The method of claim 1 including preheating said mold to an elevated temperature in a heating chamber, moving said mold from said heating chamber to a casting chamber whereby said mold cools to a lower temperature, and repeating said mold to said elevated temperature by flowing said hot gas through said mold cavity and said mold wall.
13. The method of claim 1 where said hot gas is oxidizing in nature for removing residual pattern material from said mold cavity by combustion thereof.
14. The method of claim 1 wherein said hot gas is non-oxidizing in nature.
CA2492579A 2002-09-10 2003-08-06 Method of heating casting mold Expired - Lifetime CA2492579C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/241,819 US6889745B2 (en) 2002-09-10 2002-09-10 Method of heating casting mold
US10/241,819 2002-09-10
PCT/US2003/024566 WO2004024369A1 (en) 2002-09-10 2003-08-06 Method of heating casting mold

Publications (2)

Publication Number Publication Date
CA2492579A1 true CA2492579A1 (en) 2004-03-25
CA2492579C CA2492579C (en) 2010-11-09

Family

ID=31991259

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2492579A Expired - Lifetime CA2492579C (en) 2002-09-10 2003-08-06 Method of heating casting mold

Country Status (12)

Country Link
US (1) US6889745B2 (en)
EP (1) EP1551578B1 (en)
JP (1) JP4444831B2 (en)
KR (1) KR100999216B1 (en)
AT (1) ATE465833T1 (en)
AU (1) AU2003257204B2 (en)
BR (1) BR0314177B1 (en)
CA (1) CA2492579C (en)
DE (1) DE60332373D1 (en)
ES (1) ES2343317T3 (en)
MX (1) MXPA05002665A (en)
WO (1) WO2004024369A1 (en)

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US8245758B2 (en) 2006-10-30 2012-08-21 GM Global Technology Operations LLC Coulomb damped disc brake rotor and method of manufacturing
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US7594568B2 (en) * 2005-11-30 2009-09-29 Gm Global Technology Operations, Inc. Rotor assembly and method
US9174274B2 (en) 2006-05-25 2015-11-03 GM Global Technology Operations LLC Low mass multi-piece sound dampened article
US8056233B2 (en) * 2006-06-27 2011-11-15 GM Global Technology Operations LLC Method of manufacturing an automotive component member
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US9534651B2 (en) * 2007-07-20 2017-01-03 GM Global Technology Operations LLC Method of manufacturing a damped part
US7950441B2 (en) * 2007-07-20 2011-05-31 GM Global Technology Operations LLC Method of casting damped part with insert
US20100122880A1 (en) * 2008-11-17 2010-05-20 Gm Global Technology Operations, Inc. Surface configurations for damping inserts
US9527132B2 (en) 2007-07-20 2016-12-27 GM Global Technology Operations LLC Damped part with insert
US8758902B2 (en) * 2007-07-20 2014-06-24 GM Global Technology Operations LLC Damped product with an insert having a layer including graphite thereon and methods of making and using the same
US7823763B2 (en) * 2007-08-01 2010-11-02 Gm Global Technology Operations, Inc. Friction welding method and products made using the same
US7938378B2 (en) * 2007-08-01 2011-05-10 GM Global Technology Operations LLC Damped product with insert and method of making the same
US20090035598A1 (en) * 2007-08-03 2009-02-05 Gm Global Technology Operations, Inc. Product with metallic foam and method of manufacturing the same
US8118079B2 (en) * 2007-08-17 2012-02-21 GM Global Technology Operations LLC Casting noise-damped, vented brake rotors with embedded inserts
US8020300B2 (en) 2007-08-31 2011-09-20 GM Global Technology Operations LLC Cast-in-place torsion joint
US8210232B2 (en) 2007-09-20 2012-07-03 GM Global Technology Operations LLC Lightweight brake rotor and components with composite materials
US7836938B2 (en) * 2007-09-24 2010-11-23 Gm Global Technology Operations, Inc. Insert with tabs and damped products and methods of making the same
US8028739B2 (en) * 2007-10-29 2011-10-04 GM Global Technology Operations LLC Inserts with holes for damped products and methods of making and using the same
US8091609B2 (en) * 2008-01-04 2012-01-10 GM Global Technology Operations LLC Method of forming casting with frictional damping insert
JP5015841B2 (en) * 2008-03-31 2012-08-29 トヨタ自動車株式会社 Mold preheating apparatus and mold preheating method
US8960382B2 (en) * 2008-04-18 2015-02-24 GM Global Technology Operations LLC Chamber with filler material to dampen vibrating components
US8104162B2 (en) 2008-04-18 2012-01-31 GM Global Technology Operations LLC Insert with filler to dampen vibrating components
US20090260931A1 (en) * 2008-04-18 2009-10-22 Gm Global Technology Operations, Inc. Filler material to dampen vibrating components
US7926542B2 (en) * 2008-05-30 2011-04-19 Xi Yang Low stress dewaxing system and method
US9163682B2 (en) * 2008-07-24 2015-10-20 GM Global Technology Operations LLC Friction damped brake drum
US9500242B2 (en) * 2008-12-05 2016-11-22 GM Global Technology Operations LLC Component with inlay for damping vibrations
US9127734B2 (en) * 2009-04-08 2015-09-08 GM Global Technology Operations LLC Brake rotor with intermediate portion
US20100276236A1 (en) * 2009-05-01 2010-11-04 Gm Global Technology Operations, Inc. Damped product and method of making the same
US20100282550A1 (en) * 2009-05-07 2010-11-11 Gm Global Technology Operations, Inc. Mode altering insert for vibration reduction in components
US20100294063A1 (en) * 2009-05-22 2010-11-25 Gm Global Technology Operations, Inc. Friction damped gears
US8714232B2 (en) 2010-09-20 2014-05-06 GM Global Technology Operations LLC Method of making a brake component
BR112013008524A2 (en) * 2010-10-08 2016-07-12 Buntrock Ind Inc dewaxing method for coating casting
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US9486852B2 (en) * 2013-03-14 2016-11-08 Hitchiner Manufacturing Co., Inc. Radial pattern assembly
US9452473B2 (en) * 2013-03-14 2016-09-27 Pcc Structurals, Inc. Methods for casting against gravity
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Also Published As

Publication number Publication date
EP1551578B1 (en) 2010-04-28
MXPA05002665A (en) 2005-09-08
JP4444831B2 (en) 2010-03-31
US20040045692A1 (en) 2004-03-11
JP2005537938A (en) 2005-12-15
WO2004024369A1 (en) 2004-03-25
BR0314177A (en) 2005-08-09
AU2003257204A1 (en) 2004-04-30
CA2492579C (en) 2010-11-09
EP1551578A4 (en) 2006-05-24
KR20050049486A (en) 2005-05-25
EP1551578A1 (en) 2005-07-13
AU2003257204B2 (en) 2009-04-23
DE60332373D1 (en) 2010-06-10
ES2343317T3 (en) 2010-07-28
KR100999216B1 (en) 2010-12-07
ATE465833T1 (en) 2010-05-15
BR0314177B1 (en) 2012-10-02
US6889745B2 (en) 2005-05-10

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Effective date: 20230808