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US20100230066A1 - Device and method for low-pressure casting of metal melts - Google Patents

Device and method for low-pressure casting of metal melts Download PDF

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Publication number
US20100230066A1
US20100230066A1 US12/741,127 US74112708A US2010230066A1 US 20100230066 A1 US20100230066 A1 US 20100230066A1 US 74112708 A US74112708 A US 74112708A US 2010230066 A1 US2010230066 A1 US 2010230066A1
Authority
US
United States
Prior art keywords
casting
intermediate vessel
inoculant
casting mold
outlet duct
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
US12/741,127
Other languages
English (en)
Inventor
Wilhelm Hauke
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.)
Georg Fischer Automotive AG
Original Assignee
Georg Fischer Automotive AG
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 Georg Fischer Automotive AG filed Critical Georg Fischer Automotive AG
Assigned to GEORG FISCHER AUTOMOTIVE AG reassignment GEORG FISCHER AUTOMOTIVE AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAUKE, WILHELM
Publication of US20100230066A1 publication Critical patent/US20100230066A1/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
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/007—Treatment of the fused masses in the supply runners
    • 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

Definitions

  • the invention relates to a device for the low-pressure casting of metal melts, comprising a casting furnace, a feed duct for the melt, a duct in the direction toward the casting mold and a feed for gaseous pressure application.
  • the melt is conveyed via a riser into a casting cavity, counter to the force of gravity, by subjecting the metallic melt to gaseous pressure application in a furnace.
  • melts which have additives or inoculants added to them before the casting for reasons of nucleation are treated before they enter the mold in the casting stream, in the tundish and/or in the mold itself.
  • lumps of inoculant can be introduced, during the low-pressure casting, in the region of the mold runner in order to dissolve as the mold is filled.
  • the disadvantage frequently associated with this is, in particular, that the inoculant in the metal melt is not distributed in a satisfactory manner in the casting mold. Different concentrations of the inoculant in the melt can result in considerable deviations in the desired properties of the cast pieces.
  • This known technique requires careful adjustment of the composition and of the solution behavior of the inoculant.
  • the object is achieved by virtue of the fact that an intermediate vessel is arranged between the casting mold and the duct, an access point being provided in the intermediate vessel for the addition of an inoculant.
  • an overflow wall is arranged inside the intermediate vessel. It has advantageously been shown that optimum distribution of the inoculant in the melt, in particular by the flow, is achieved when the inoculant is introduced upstream of the intermediate wall.
  • FIG. 1 shows a sectional view of a furnace.
  • the casting furnace 1 comprises a feed duct 2 for the filling operation with metal melt 3 .
  • the feed duct 2 can be closed by means of a cover 14 .
  • a feed 6 is provided on the casting furnace 1 in order to apply gas pressure to the melt.
  • a duct 4 adjoined directly by the intermediate vessel 7 is fitted on the casting furnace 1 .
  • the casting mold 5 is arranged above the intermediate vessel 7 and is connected to the intermediate vessel 7 by way of the riser 13 via the opening 11 .
  • a tubular attachment 15 for the addition of the inoculant 9 is fitted at the access point 8 to the intermediate vessel 7 .
  • An overflow wall 10 for the melt 3 is provided inside the intermediate vessel 7 and is arranged slightly downstream of the end of the duct 4 .
  • the casting operation proceeds as follows:
  • the casting furnace 1 is filled with metal melt 3 via the feed duct 2 .
  • the feed duct 2 is closed in a gas-tight manner by means of a cover 14 .
  • the pressures p 1 , p 2 and p 3 correspond to atmospheric pressure.
  • the chamber 16 is subjected to the application of pressure with a gaseous medium.
  • the pressure p 1 is greater than the pressures p 2 and p 3 .
  • the melt begins to flow into the intermediate vessel 7 via the duct 4 and the overflow wall 10 .
  • the inoculant 9 is added via the tubular attachment 15 .
  • the addition opening is arranged between the overflow wall 10 and the casting mold 5 . It is likewise conceivable to add the inoculant 9 in the region 17 , i.e. upstream of the overflow wall 10 .
  • the inoculant 9 is mixed homogeneously with the metal melt 3 owing to the flow of the metal melt 3 .
  • it is necessary to build up the pressure p 2 which corresponds to the height ⁇ H.
  • p 2 is lowered to such an extent that the melt located outside the casting mold can flow back into the intermediate vessel 7 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
US12/741,127 2007-11-06 2008-11-04 Device and method for low-pressure casting of metal melts Abandoned US20100230066A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07120039A EP2060340A1 (fr) 2007-11-06 2007-11-06 Dispositif et procédé de coulage basse pression de métal en fusion
EP07120039.8 2007-11-06
PCT/EP2008/064895 WO2009059952A1 (fr) 2007-11-06 2008-11-04 Dispositif et procédé pour la coulée à basse pression de métaux en fusion

Publications (1)

Publication Number Publication Date
US20100230066A1 true US20100230066A1 (en) 2010-09-16

Family

ID=39032393

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/741,127 Abandoned US20100230066A1 (en) 2007-11-06 2008-11-04 Device and method for low-pressure casting of metal melts

Country Status (4)

Country Link
US (1) US20100230066A1 (fr)
EP (1) EP2060340A1 (fr)
JP (1) JP2011502787A (fr)
WO (1) WO2009059952A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392040A (zh) * 2016-11-26 2017-02-15 中信戴卡股份有限公司 适用机械泵充型的连通器式低压铸造保温炉
CN107661971A (zh) * 2016-07-31 2018-02-06 浙江跃岭股份有限公司 一种低压铸造铝合金轮毂的液化装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101813684B1 (ko) * 2014-07-17 2017-12-29 가부시키가이샤 도우네쓰 듀얼 챔버형 저압 주조용 용탕 유지로
CN104841894A (zh) * 2015-04-27 2015-08-19 乔治费歇尔汽车产品(昆山)有限公司 一种气压浇注炉快速调质工艺方法
KR101962871B1 (ko) * 2017-11-02 2019-03-28 삼영기계(주) 주물 접종장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252173A (en) * 1976-02-03 1981-02-24 Societe De Vente De L'aluminium Pechiney Low-pressure moulding process and apparatus
US4431046A (en) * 1979-12-15 1984-02-14 Russ-Elektroofen Produktiongsgesellschaft Mbh & Co. Automated low-pressure casting mechanism and method
US4527608A (en) * 1983-05-30 1985-07-09 Pont-A-Mousson S.A. Method for inoculating liquid metal cast under low pressure
US5758706A (en) * 1993-12-30 1998-06-02 Sintercast Ab Process control of compacted graphite iron production in pouring furnaces
US5913358A (en) * 1993-11-11 1999-06-22 Hi-Tec Metals Ltd. Casting apparatus and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1527054A (en) * 1977-05-11 1978-10-04 British Cast Iron Res Ass Producing nodular graphite iron
WO1980002659A1 (fr) * 1979-06-07 1980-12-11 Mezger Ag Maschf Giesserei Dispositif de reglage automatique par asservissement pour l'inoculation du metal fondu lors d'une operation de coulee
GB2069898A (en) * 1980-02-26 1981-09-03 Metal Research Corp Inoculation to a molten cast iron during pouring
JPS57134241A (en) * 1981-02-13 1982-08-19 Jidosha Imono Kk Method for addition of inoculant
DE10039877A1 (de) * 2000-05-23 2001-11-29 Wagner Heinrich Sinto Masch Verfahren und Gießform zur Herstellung von Gussstücken
JP2005095921A (ja) 2003-09-24 2005-04-14 Ariake Serako Kk 鋳造方法及び鋳造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252173A (en) * 1976-02-03 1981-02-24 Societe De Vente De L'aluminium Pechiney Low-pressure moulding process and apparatus
US4431046A (en) * 1979-12-15 1984-02-14 Russ-Elektroofen Produktiongsgesellschaft Mbh & Co. Automated low-pressure casting mechanism and method
US4527608A (en) * 1983-05-30 1985-07-09 Pont-A-Mousson S.A. Method for inoculating liquid metal cast under low pressure
US5913358A (en) * 1993-11-11 1999-06-22 Hi-Tec Metals Ltd. Casting apparatus and method
US5758706A (en) * 1993-12-30 1998-06-02 Sintercast Ab Process control of compacted graphite iron production in pouring furnaces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107661971A (zh) * 2016-07-31 2018-02-06 浙江跃岭股份有限公司 一种低压铸造铝合金轮毂的液化装置
CN106392040A (zh) * 2016-11-26 2017-02-15 中信戴卡股份有限公司 适用机械泵充型的连通器式低压铸造保温炉

Also Published As

Publication number Publication date
JP2011502787A (ja) 2011-01-27
EP2060340A1 (fr) 2009-05-20
WO2009059952A1 (fr) 2009-05-14

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GEORG FISCHER AUTOMOTIVE AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAUKE, WILHELM;REEL/FRAME:024436/0892

Effective date: 20100503

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION