US2960736A - Casting arrangement for all metals - Google Patents

Casting arrangement for all metals Download PDF

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Publication number
US2960736A
US2960736A US623707A US62370756A US2960736A US 2960736 A US2960736 A US 2960736A US 623707 A US623707 A US 623707A US 62370756 A US62370756 A US 62370756A US 2960736 A US2960736 A US 2960736A
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US
United States
Prior art keywords
metal
bell
metals
casting
conduit
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.)
Expired - Lifetime
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US623707A
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English (en)
Inventor
Poudevigne Jean
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Individual
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Individual
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Filing date
Publication date
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Publication of US2960736A publication Critical patent/US2960736A/en
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    • 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
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
    • 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/02—Use of electric or magnetic effects

Definitions

  • the object of the invention consists in an arrangement intended for the casting of all sorts of pieces of ferrous and non-ferrous metals, permitting of maintaining a regulable and constant pressure with the aid of an appropriate gas upon the mass of metal, while irrigating it to eliminate any central piping and to ensure a casting without heterogeneous area or micro-porosities or micro-piping, all with a mass of metal reduced to the minimum.
  • the mould or sand 13 is filled with metal, the mass 1 of which represents the piece to be obtained as cast.
  • the vessel which is to contain the excess quantities of metal 2 is of smaller section, but forms in its upper part a bell-mouth 3 with walls.
  • the bell 4 comprises a lower periphery with proled vertical edges 5 with protruding external horizontal shoulder 6, having a diameter greater than that of the bell-mouth on the walls of which it rests.
  • a heat-generating element 7 dipping deeply into the mass of surplus metal.
  • the whole of the bell, forming an internal chamber 8, is rendered perfectly air-tight by a stopper 9 provided with a packing.
  • An orifice 10 connects the interior of the chamber with the compressed gas delivery duct 11.
  • This conduit comprises suitable Supervisory and closure members.
  • the surplus mass 2 of metal necessary for supplying the contraction of the piece 1 when it solidifies is maintained in the liquid state by means of the heat generator 7.
  • This element is constituted so as to conform to the use for which it is intended, according to the metals. It is constructed of substances possessing exothermic properties, and its starting up can be effected on contact with the liquid metal. The ensuing reaction produces, by generation of calories, the heating of the surplus mass 2 upon which the pressure of the gas 11 acts. The pressure is constant upon the thrust surface 12.
  • This collar of liquid metal surrounding the base of the bell further increases, by its solidication, the sealing against the gas pressure, due to the oppositely directed actions of its withdrawal and the expansion of the bell.
  • the variation of height of the element 7 is obtained by screwing of the stopper or the addition of a connection.
  • an exothermic element generates gases which have to be evacuated by means of a tap lett open at the moment of casting and remaining so as long as is necessary. If the heat generating element is electrical it is possible, as soon as the compression level is reached, to re-close the tap and to admit the gas pressure. The casting and the operation being terminated, the device is withdrawn at high temperature, that is to say without having interrupted the arrival of the current, in order to avoid adherence of the cooled metal to the pieces in contact therewith. Thus whereas the center of the surplus part 2 is kept liquid, the walls thereof solidify over a reduced thickness by contact of the metal with the sand. This solidied sheath prevents losses of pressure and permits of obtaining an optimum form for the piping compensating for the contraction of the metal of the piece. Thus a signicant economy is obtained in the quantity of liquid metal necessary to obtain this result.
  • a mold chamber to receive molten metal for solidilication into an ingot, said chamber having yan opening at the top, a lead-in conduit formed by the walls of said mold and having an increased cross-sectional area at its open upper end, the lower end of said conduit being in open communication with said mold chamber, a bell member seated by a peripheral ange on said walls at the upper end of said conduit to serve as a closure therefore, an annular wall depending from the bell member into said open upper end of said conduit and spaced inwardly therefrom, valve means on said bell member for the introduction of compressed gas, an electrical heating element mounted on the bell member and positioned to depend axially and in spaced relationship into said conduit for most of the length of said conduit, said molten metal filling said mold chamber and said conduit to a level above said depending Wall of said bell member whereby said metal lying axially and adjacent to said heating element is maintained in a molten state by said heating element as the metal solidies between said annular depending wall of the bell member and the Wall of said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US623707A 1956-05-30 1956-11-21 Casting arrangement for all metals Expired - Lifetime US2960736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1150298T 1956-05-30

Publications (1)

Publication Number Publication Date
US2960736A true US2960736A (en) 1960-11-22

Family

ID=9647219

Family Applications (1)

Application Number Title Priority Date Filing Date
US623707A Expired - Lifetime US2960736A (en) 1956-05-30 1956-11-21 Casting arrangement for all metals

Country Status (6)

Country Link
US (1) US2960736A (de)
BE (1) BE551371A (de)
CH (1) CH334018A (de)
FR (1) FR1150298A (de)
GB (1) GB805486A (de)
LU (1) LU34671A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279005A (en) * 1963-09-10 1966-10-18 Schloemann Ag Method of effecting the solidification of metals under gaseous pressure
US4145176A (en) * 1971-02-26 1979-03-20 Townsend & Townsend Cable molding apparatus for accomplishing same
EP0755739A1 (de) * 1995-07-28 1997-01-29 Sintokogio, Ltd. Verfahren zum Herstellen von Metallkerne mit niedrigem Schmelzpunkt
WO1997007914A1 (de) * 1995-08-28 1997-03-06 Eisenwerk Brühl GmbH Verfahren zum herstellen von gussstücken aus leichtmetall und giessform zur durchführung des verfahrens
DE19803397A1 (de) * 1998-01-29 1999-08-05 Volkswagen Ag Gießform zum Herstellen von Gußstücken
CN102941334A (zh) * 2012-11-27 2013-02-27 山东圣泉化工股份有限公司 一种铸造加压装置、铸造加压系统及铸造加压方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US315741A (en) * 1885-04-14 Mold for casting steel
US506518A (en) * 1893-10-10 Apparatus for casting steel or other ingots
US901361A (en) * 1907-08-02 1908-10-20 George O Eaton Molding process.
GB162348A (en) * 1920-01-15 1921-04-15 Harold Heron Hosack Improvements connected with the casting of steel and other metals
GB344947A (en) * 1929-02-19 1931-03-16 Emilien Bornand Device for casting metals
US1913434A (en) * 1931-07-08 1933-06-13 Maxwell G Dumas Hot top
US1918734A (en) * 1930-08-26 1933-07-18 Bornand Emilien Means for casting metals
US2152528A (en) * 1935-07-23 1939-03-28 United Eng Foundry Co Mold
AT184679B (de) * 1954-01-09 1956-02-10 Bernhard Dr Mont Ing Matuschka Verfahren zur Herstellung dichter und fehlerfreier Gußblöcke aus Metallen, insbesondere Stahl und Eisen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US315741A (en) * 1885-04-14 Mold for casting steel
US506518A (en) * 1893-10-10 Apparatus for casting steel or other ingots
US901361A (en) * 1907-08-02 1908-10-20 George O Eaton Molding process.
GB162348A (en) * 1920-01-15 1921-04-15 Harold Heron Hosack Improvements connected with the casting of steel and other metals
GB344947A (en) * 1929-02-19 1931-03-16 Emilien Bornand Device for casting metals
US1918734A (en) * 1930-08-26 1933-07-18 Bornand Emilien Means for casting metals
US1913434A (en) * 1931-07-08 1933-06-13 Maxwell G Dumas Hot top
US2152528A (en) * 1935-07-23 1939-03-28 United Eng Foundry Co Mold
AT184679B (de) * 1954-01-09 1956-02-10 Bernhard Dr Mont Ing Matuschka Verfahren zur Herstellung dichter und fehlerfreier Gußblöcke aus Metallen, insbesondere Stahl und Eisen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279005A (en) * 1963-09-10 1966-10-18 Schloemann Ag Method of effecting the solidification of metals under gaseous pressure
US4145176A (en) * 1971-02-26 1979-03-20 Townsend & Townsend Cable molding apparatus for accomplishing same
EP0755739A1 (de) * 1995-07-28 1997-01-29 Sintokogio, Ltd. Verfahren zum Herstellen von Metallkerne mit niedrigem Schmelzpunkt
WO1997007914A1 (de) * 1995-08-28 1997-03-06 Eisenwerk Brühl GmbH Verfahren zum herstellen von gussstücken aus leichtmetall und giessform zur durchführung des verfahrens
US5954113A (en) * 1995-08-28 1999-09-21 Eisenwerk Bruehl Gmbh Method for producing light metal castings and casting mold for carrying out the method
DE19803397A1 (de) * 1998-01-29 1999-08-05 Volkswagen Ag Gießform zum Herstellen von Gußstücken
CN102941334A (zh) * 2012-11-27 2013-02-27 山东圣泉化工股份有限公司 一种铸造加压装置、铸造加压系统及铸造加压方法

Also Published As

Publication number Publication date
GB805486A (en) 1958-12-10
LU34671A1 (de)
CH334018A (fr) 1958-11-15
FR1150298A (fr) 1958-01-09
BE551371A (de)

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