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US20020000303A1 - Method of and device for producing light metal castings, in particular parts of magnesium or mangnesium alloys - Google Patents

Method of and device for producing light metal castings, in particular parts of magnesium or mangnesium alloys Download PDF

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Publication number
US20020000303A1
US20020000303A1 US09/862,803 US86280301A US2002000303A1 US 20020000303 A1 US20020000303 A1 US 20020000303A1 US 86280301 A US86280301 A US 86280301A US 2002000303 A1 US2002000303 A1 US 2002000303A1
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US
United States
Prior art keywords
pressure
melting
light metal
metal
liquid metal
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.)
Abandoned
Application number
US09/862,803
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English (en)
Inventor
Bernhard Kern
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.)
Kern Leichtmetall-Giesstechnik GmbH
Original Assignee
Kern Leichtmetall-Giesstechnik GmbH
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 Kern Leichtmetall-Giesstechnik GmbH filed Critical Kern Leichtmetall-Giesstechnik GmbH
Assigned to KERN GMBH LEICHTMETALL-GIESSTECHNIK reassignment KERN GMBH LEICHTMETALL-GIESSTECHNIK ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KERN, BERNHARD
Publication of US20020000303A1 publication Critical patent/US20020000303A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • 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
    • B22D27/15—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/08—Controlling, supervising, e.g. for safety reasons
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium

Definitions

  • the present invention relates to a method for producing light metal castings, in particular for producing light metal parts of magnesium or magnesium alloys, as well as to a device for performing the method.
  • German patent document DE-OS 44 31 865 discloses a method of and a device for producing pressure castings, with which in particular pressure castings of magnesium alloys can be produced.
  • the liquid metal is first supplied to a dosing chamber, to which a gas under pressure is supplied as well. Subsequently, the liquid metal is pressed by the pressure gas into a mold nest which before was evacuated.
  • the disadvantage of this method and device for performing the method is that the pneumatic pressure conditions are not suitable for a production from prototypes to the quantities of a series. In the arrangement practically temperature conditions between the tool and the smelter are not provided. The required temperature differences between the smelter and the feed region are too high and thereby are realizable only with considerable technical expenses.
  • a method of production of light metal castings which includes supplying a liquid metal first to a dosing chamber; pumping gas under pressure into the dosing chamber so as to press the liquid metal into a preliminarily evacuated mold nest; performing a production process within a system which is pressure-tightly closed from outside; performing heating of the liquid metal in a lower part of a melting device which adjoins a feed system; performing overheating of the liquid metal from a melting condition with a temperature of approximately 630° C. to a rigidification condition from a tool side to a lower region of a valve seat; and supplying and withdrawing a protective gas by a differential pressure system.
  • a device for producing light metal castings which has a melting unit having a container; a metal supply conduit arranged in said container and extending outwardly in a pressure tight manner; a pre-melting oven; a check valve through which the liquid metal is supplied from the pre-melting oven; a differential pressure system with which the container of the melting unit is connected; and sluice means introduced into the container of the melting means in a pressure tight manner.
  • FIG. 1 is a view schematically showing a device for producing light metal castings in accordance with the present invention, which operates in accordance with the inventive method;
  • FIG. 2 is a view schematically showing an arrangement of a casting retort as a first variant inside a casting components group
  • FIG. 3 is a view schematically showing a second variant of the design of the casting mold and a differential pressure system of the inventive device.
  • FIG. 1 shows a device for producing light metal castings in accordance with the present invention. It corresponds to a principle design of a system for producing light metal castings, which is pressure-tightly closed from outside.
  • the metal which is used for producing the light metal castings such as for example magnesium or magnesium alloys is heated in a casting retort 1 by heating means 2 in accordance with the present invention, to approximately 630° C.
  • the shaping of the casting retort 1 is formed so that it reduces toward a feed system 4 .
  • the heating means 2 is arranged around the casting retort 1 .
  • the shape of the casting retort 1 and the arrangement of the heating means 2 in its lower regions makes possible the production of the required temperature conditions for the melting and feeding process. Because of the conical shape of the casting retort 1 and its arrangement on a base body 5 , the required distance and the withdrawal of the heat energy for rigidification of the material is realized.
  • the heating means 10 can be formed as resistance heating, infrared heating, or induction heating.
  • the narrowing structure of the casting retort 1 is placed on the base support 5 .
  • the outlet 5 of the casting retort 1 is located therefore flush over an opening in the base support 5 and is closed by a valve unit 3 .
  • a casting mold 19 is arranged under the base support 5 so that it is movable vertically and in a horizontal plane. It is connected with an evacuating device 20 . After the evacuation the valve unit 3 is removed by a valve control 12 via a mechanical connecting member 13 from the opening, and the supply of liquid metal into the mold nest of the casting mold 19 is released.
  • the supply of the liquid metal, in particular for post-dosing during the manufacture of serial light metal castings to the casting retort 1 is performed via a metal supply 18 from a pre-melting oven 16 .
  • a check valve 17 prevents a return flow of liquid metal as well as pressure equalizaiton.
  • the check valve 17 can be arranged in connection with the metal supply conduit 18 inside the pre-melting oven 16 or in connection with the metal supply conduit 18 inside the casting retort 1 .
  • the arrangement of the check valve 17 inside the casting retort 1 provides for the advantage of pressure freedom in the metal supply conduit 18 .
  • Gas supply is performed inside the closed system through a protective gas supply conduit 18 by a pressure intensifier 9 .
  • the pressure intensifier 9 supplies a protective gas and then withdraws it after the manufacturing process.
  • a control unit is arranged on the protective gas supply conduit 8 and serves for providing a constant pressure. Eventually occurring pressure losses due to gas losses at untight locations are compensated by a protective gas post-dosing 10 , for example a protecting gas envelope.
  • the valve control 12 is formed as a pneumatic or hydraulic control. A “sudden” (short-term) opening of the valve unit 3 act through a valve lock 14 and thereby prevent a pore formation of the material of the light metal casings.
  • FIG. 2 shows a schematical arrangement of a first variant of the casting component group.
  • the heating means 20 is arranged around the lower narrowing part.
  • the valve unit 3 closes the opening at outlet part of the casting retort 1 to the casting mold 19 .
  • the short term opening of the valve unit 3 is performed through the valve control 12 and the valve lock 14 .
  • the liquid metal flows into the casting mold 19 .
  • the rigidification process is performed by the withdrawal of the thermal energy through the base support 5 and the automatic withdrawal of the casting mold 19 from the feed system 4 .
  • the casting retort 1 inside the casting component group is surrounded by a thermal insulation 6 .
  • the available melting temperature is detected by the temperature sensor 7 and the corresponding signal is supplied to the valve control 12 .
  • FIG. 3 shows a second variant of the design of the casting mold and the differential pressure system of the inventive device.
  • the casting retort 1 has a cylindrical shape.
  • the heating means 2 is arranged around the lower cylindrical part of the casting retort 1 .
  • the required heat difference for the rigidification process between the feed system 4 and the casting mold 19 is provided by the thermal insulation 6 and the withdrawal of the casting mold 19 after the supply of the liquid metal.
  • the supply of the protective gas is performed in this variant by a differential pressure system. It is composed of a known blow storage 21 and a pump system 22 for supply and withdrawal of the protective gas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Furnace Details (AREA)
  • Forging (AREA)
US09/862,803 2000-05-22 2001-05-22 Method of and device for producing light metal castings, in particular parts of magnesium or mangnesium alloys Abandoned US20020000303A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10025014.9 2000-05-22
DE10025014A DE10025014C2 (de) 2000-05-22 2000-05-22 Vorrichtung zur Herstellung von Leichtmetallgußerzeugnissen, insbesondere von Teilen aus Magnesium bzw. Magnesiumlegierungen

Publications (1)

Publication Number Publication Date
US20020000303A1 true US20020000303A1 (en) 2002-01-03

Family

ID=7642928

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/862,803 Abandoned US20020000303A1 (en) 2000-05-22 2001-05-22 Method of and device for producing light metal castings, in particular parts of magnesium or mangnesium alloys

Country Status (9)

Country Link
US (1) US20020000303A1 (ja)
JP (1) JP3835673B2 (ja)
KR (1) KR100696741B1 (ja)
AT (1) AT412763B (ja)
DE (1) DE10025014C2 (ja)
FR (1) FR2809035B1 (ja)
IT (1) ITMI20011075A1 (ja)
RU (1) RU2246375C2 (ja)
TW (1) TW558466B (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1317094C (zh) * 2005-09-22 2007-05-23 上海交通大学 铝基复合材料反重力真空吸铸成形设备
CN102407583A (zh) * 2011-08-18 2012-04-11 郭雷辰 一种蚁巢铸型的制作方法
CN104858408A (zh) * 2015-05-20 2015-08-26 王建军 有色金属智能浇铸系统
CN108213381A (zh) * 2018-01-22 2018-06-29 广德盛源电器有限公司 一种铝合金件压铸机
WO2021219478A1 (de) * 2020-04-30 2021-11-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum herstellen einer materialpatrone, behälter zur anwendung in einem entsprechenden verfahren, materialpatrone sowie verfahren zum herstellen eines gussproduktes unter verwendung der materialpatrone, sowie entsprechendes gussprodukt
CN114029001A (zh) * 2021-12-03 2022-02-11 上海镁源动力科技有限公司 一种用于液态金属原料自动上料的装置及上料方法
IT202100031076A1 (it) * 2021-12-10 2023-06-10 Paolo Zolesi Metodo per fabbricare un pezzo in lega leggera tramite una colata di lega leggera fusa a bassa pressione e apparecchiatura per eseguire tale metodo

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327165B4 (de) * 2003-06-15 2008-08-07 Kern Gmbh Magnesium-Giesstechnik Vorrichtung zur Herstellung von Leichtmetallgusserzeugnissen
KR101450855B1 (ko) * 2013-02-28 2014-10-15 재단법인 포항산업과학연구원 마그네슘 열환원 반응관 내부온도 측정장치
KR101661978B1 (ko) * 2014-12-24 2016-10-10 재단법인 포항산업과학연구원 주조장치 및 그 제어방법
CN105921720B (zh) * 2016-05-20 2017-10-20 河南理工大学 一种镁合金薄壁件制备方法
CN107486548A (zh) * 2017-10-17 2017-12-19 浙江奥真电子科技有限公司 一种用于合金制造的压铸设备
CN108247017B (zh) * 2017-12-29 2019-12-13 安徽高德铝业有限公司 基于余热回收的铝型材真空加工控制系统

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US3663730A (en) * 1971-03-18 1972-05-16 Gen Electric Molten metal dispensing equipment
US4478270A (en) * 1981-04-01 1984-10-23 Interlake, Inc. Apparatus for casting low-density alloys
US4550617A (en) * 1983-05-06 1985-11-05 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." Multi axis force and moments transducer
US4609032A (en) * 1984-02-29 1986-09-02 Guido Perrella Nozzle assembly for die casting machine
US5358027A (en) * 1993-03-05 1994-10-25 Cmi International Vacuum-assisted gravity pour casting apparatus
US5400931A (en) * 1992-10-23 1995-03-28 Norsk Hydro A.S Metering unit for liquid magnesium

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US2210544A (en) * 1938-04-18 1940-08-06 Electric Storage Battery Co Casting
DE2300666B2 (de) * 1973-01-08 1977-12-15 Inresa, Alfons Schultheiss Kg, 7541 Salmbach Schmelz- und giessvorrichtung
DE3214922C2 (de) * 1982-04-22 1984-04-26 Norsk Hydro Magnesiumgesellschaft mbH, 4300 Essen Niederdruck-Gießvorrichtung zum Gießen von flüssigen Metallen
US4580617A (en) * 1982-05-07 1986-04-08 Charles Blechner Induction casting machine and method of casting
DE3379449D1 (en) * 1983-11-15 1989-04-27 Elkem Metals Process for producing alloys
DE3610497A1 (de) * 1986-03-27 1988-07-14 Doerrenberg Edelstahl Gmbh Giessvorrichtung
KR100193236B1 (ko) * 1993-12-20 1999-06-15 정몽규 마그네슘 주조품의 제조장치
DE4403285A1 (de) * 1994-01-31 1995-08-03 Alexander Fischer Dosierofen
DE4431865A1 (de) * 1994-09-07 1996-03-14 Karl Braun Verfahren und Vorrichtung zum Herstellen von Druckgußteilen
JPH08309509A (ja) * 1995-05-18 1996-11-26 Toyota Motor Corp 差圧成形法
JPH11192541A (ja) * 1998-01-06 1999-07-21 Yasugi Seisakusho:Kk アルミニウム合金の鋳造装置
DE19813416C2 (de) * 1998-03-26 2000-01-05 Univ Hannover Verfahren und Vorrichtung zur Handhabung von Schmelzen, insbesondere von Magnesium und Magnesiumlegierungen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663730A (en) * 1971-03-18 1972-05-16 Gen Electric Molten metal dispensing equipment
US4478270A (en) * 1981-04-01 1984-10-23 Interlake, Inc. Apparatus for casting low-density alloys
US4550617A (en) * 1983-05-06 1985-11-05 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." Multi axis force and moments transducer
US4609032A (en) * 1984-02-29 1986-09-02 Guido Perrella Nozzle assembly for die casting machine
US5400931A (en) * 1992-10-23 1995-03-28 Norsk Hydro A.S Metering unit for liquid magnesium
US5358027A (en) * 1993-03-05 1994-10-25 Cmi International Vacuum-assisted gravity pour casting apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1317094C (zh) * 2005-09-22 2007-05-23 上海交通大学 铝基复合材料反重力真空吸铸成形设备
CN102407583A (zh) * 2011-08-18 2012-04-11 郭雷辰 一种蚁巢铸型的制作方法
CN104858408A (zh) * 2015-05-20 2015-08-26 王建军 有色金属智能浇铸系统
CN108213381A (zh) * 2018-01-22 2018-06-29 广德盛源电器有限公司 一种铝合金件压铸机
WO2021219478A1 (de) * 2020-04-30 2021-11-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum herstellen einer materialpatrone, behälter zur anwendung in einem entsprechenden verfahren, materialpatrone sowie verfahren zum herstellen eines gussproduktes unter verwendung der materialpatrone, sowie entsprechendes gussprodukt
CN114029001A (zh) * 2021-12-03 2022-02-11 上海镁源动力科技有限公司 一种用于液态金属原料自动上料的装置及上料方法
IT202100031076A1 (it) * 2021-12-10 2023-06-10 Paolo Zolesi Metodo per fabbricare un pezzo in lega leggera tramite una colata di lega leggera fusa a bassa pressione e apparecchiatura per eseguire tale metodo

Also Published As

Publication number Publication date
RU2246375C2 (ru) 2005-02-20
AT412763B (de) 2005-07-25
JP2002011561A (ja) 2002-01-15
DE10025014C2 (de) 2003-07-24
FR2809035B1 (fr) 2005-08-19
FR2809035A1 (fr) 2001-11-23
JP3835673B2 (ja) 2006-10-18
ATA7872001A (de) 2004-12-15
ITMI20011075A0 (it) 2001-05-22
DE10025014A1 (de) 2002-01-10
KR100696741B1 (ko) 2007-03-19
TW558466B (en) 2003-10-21
KR20010107613A (ko) 2001-12-07
ITMI20011075A1 (it) 2002-11-22

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KERN GMBH LEICHTMETALL-GIESSTECHNIK, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KERN, BERNHARD;REEL/FRAME:012042/0626

Effective date: 20010612

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION