US3318370A - Apparatus for casting thin-walled cast iron parts - Google Patents

Apparatus for casting thin-walled cast iron parts Download PDF

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Publication number
US3318370A
US3318370A US379919A US37991964A US3318370A US 3318370 A US3318370 A US 3318370A US 379919 A US379919 A US 379919A US 37991964 A US37991964 A US 37991964A US 3318370 A US3318370 A US 3318370A
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US
United States
Prior art keywords
furnace
molten metal
mold
female die
snorkel tube
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
Application number
US379919A
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English (en)
Inventor
Daniel E Groteke
James A Stavrolakis
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.)
American Radiator and Standard Sanitary Corp
Original Assignee
American Radiator and Standard Sanitary Corp
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 American Radiator and Standard Sanitary Corp filed Critical American Radiator and Standard Sanitary Corp
Priority to US379919A priority Critical patent/US3318370A/en
Priority to FR19846A priority patent/FR1435698A/fr
Priority to DEA49628A priority patent/DE1280505B/de
Priority to GB28019/65A priority patent/GB1063543A/en
Priority to CH927265A priority patent/CH439605A/de
Priority to US604773A priority patent/US3523570A/en
Application granted granted Critical
Publication of US3318370A publication Critical patent/US3318370A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
    • 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

Definitions

  • the main object of this invention is to provide an automated process for formation of light, strong, uniform, thin-walled fixtures which process produces castings requiring a minimum of secondary operations prior to enameling.
  • Another object of the invention is to provide a novel hydraulically operated mold which is easily automated and which when operated according to the method of the invention produces gray iron castings of unusually low section thickness with little or no scrap loss.
  • a further object of this invention is to provide a method of producing thin-walled castings of metal characterized by pouring a molten gray iron composition into an insulated, coated, preheated female die, rapidly closing the mold by bringing the insulated preheated male die to a point just above the molten iron, slowly advancing the male die during forming and quick opening the mold while the metal is at red heat.
  • Another object of the invention is to provide novel means for conveying molten iron in a furnace through a heated snorkel tube to a female die.
  • a further object of the invention is to provide novel means for extending the life of the snorkel tube by minimizing thermal shock.
  • the novel forming apparatus of the invention comprises a male die 3 (cope) which is so maneuvered for example, by a piston in a cylinder such as shown in FIGS. 2A and 23, that at the start of any given cycle it is in open position 2; and a female die (drag) mounted above a pressurized melting furnace 14 connected therewith by a snorkel tube 6, made of a refractory alloy or compound.
  • Furnace 14 has a gas-tight lid 20.
  • An auxiliary heat source 7 surrounds the upper part of tube 6. This tube can be cooled if needed by passing water which enters a cooling coil at 8 and exits at 10.
  • the diameter of snorkel tube 6 is such as to enable it to receive the core projection 11 on male die 3.
  • inert gas which is non-oxidizing under the ambient conditions is maintained over the molten metal in the furnace.
  • Suitable inert gases for the purposes of this invention include nitrogen, argon, helium, chlorine or carbon dioxide. be used to convey the selected gas to the furnace.
  • the male die When the metal level has returned to the level indicated by 12, the male die is quickly retracted to position 2.
  • the press-formed casting will then either remain in the female die or will adhere to the male die.
  • This position can be controlled by regulating the die temperatures, the surface finish of the dies and the cycle timing. Die temperature is controlled by adjusting cycle time. For example, lengthening the time a mold remains closed lowers the temperature of the press formed part and increases its shrinkage.
  • the cast section then locks onto the cope side of the die assembly.
  • the preferred method is to open the mold when the casting is between 1750 and 1500 F. The casting remains in the drag side of the mold and is easily removed without any danger of cracking. Cycle Any means well known in the art can the four-way valve.
  • time is a function of metal volume poured, cooling used, etc.
  • the finished casting can be removed by ejection off the male die with ejection pins or by picking up the casting from the female mold with a conventional vacuum holder.
  • the casting should be retracted from the mold before it has cooled below black heat.
  • All the die surfaces which are wet by the molten metal should be coated with either lampblack, or, preferably by a multilayer coating disclosed and claimed in co-pending Ser. No. 380,047 filed this day, now Patent No. 3,266,- 107.
  • the coating described in said application consists of a base coating of a high conductivity, high ductility material usedin the base layer, an inert refractory metal oxide and a plasma-sprayed overlayer of refractory oxide.
  • a limit switch LS-l shown in FIG. 2A closes to complete the hold circuit, allowing the start switch to be released.
  • limit switch 'LS-2 energizing solenoid 3 which stops the direct exhaust of water from the bottom of the cylinder to the drain. Instead, the exhaust water is channeled through the variable flow control valve.
  • Limit switch LS'2 also energizes a timer motor and clutch, connected as shown in FIG. 2B. 7
  • the timer switch TM-l closes, energizing solenoid 2, which changes This provides free, fiow of water through the check valve into the bottom cylinder. Water exhausting from the top is directed to the drain.
  • LS2 As the piston starts to retract, LS2 is opened. 'Atthe topv of .the return stroke, the normally closed 0 limit switch; LS.1 -opens, the hold relay, timer clutch,
  • solenoid 1 is deenergized and all motion ceases.
  • the dies of the machine shown in FIG. 1 were maintained at a temperature of 700 to 800 F. and the "metal pouring temperature between 2400 and 2750 F.
  • said male mold having a central core projection positionso as to project through said opening in said female die and below the level to which molten metal solidifies, and heating means to heat the molten metal within said snorkel tube and maintain the upper level of the'molten iron above the bottom of the said central core projection during the molding operation, whereby decreasing the pressure in said holding furnace after solidification of the metal in said mold cavity causes the level of the molten metal to drop from a point above the bottom of said core projection to a point below the bottom of said core projection.
  • the apparatus of claim 1 further comprising a cylinder connected to said male die and adapted to move the same in relation to said female die, a hydraulic circuit for actuating said cylinder, electric means for controlling said hydraulic circuit, said means including means for energizing said hydraulic system, means for holding said system stationary, and means for de-energizing the same.
US379919A 1964-07-02 1964-07-02 Apparatus for casting thin-walled cast iron parts Expired - Lifetime US3318370A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US379919A US3318370A (en) 1964-07-02 1964-07-02 Apparatus for casting thin-walled cast iron parts
FR19846A FR1435698A (fr) 1964-07-02 1965-06-08 Procédé d'obtention de pièces moulées en fonte à paroi mince
DEA49628A DE1280505B (de) 1964-07-02 1965-07-01 Verfahren zum Druckgiessen duennwandiger Metallteile
GB28019/65A GB1063543A (en) 1964-07-02 1965-07-01 Method of forming thin-walled cast iron parts
CH927265A CH439605A (de) 1964-07-02 1965-07-02 Verfahren zum Giessen von metallischen Gussstücken, Vorrichtung zur Durchführung des Verfahrens und Anwendung des Verfahrens
US604773A US3523570A (en) 1964-07-02 1966-12-27 Method of press forming thin-walled cast iron parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US379919A US3318370A (en) 1964-07-02 1964-07-02 Apparatus for casting thin-walled cast iron parts

Publications (1)

Publication Number Publication Date
US3318370A true US3318370A (en) 1967-05-09

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Family Applications (2)

Application Number Title Priority Date Filing Date
US379919A Expired - Lifetime US3318370A (en) 1964-07-02 1964-07-02 Apparatus for casting thin-walled cast iron parts
US604773A Expired - Lifetime US3523570A (en) 1964-07-02 1966-12-27 Method of press forming thin-walled cast iron parts

Family Applications After (1)

Application Number Title Priority Date Filing Date
US604773A Expired - Lifetime US3523570A (en) 1964-07-02 1966-12-27 Method of press forming thin-walled cast iron parts

Country Status (5)

Country Link
US (2) US3318370A (de)
CH (1) CH439605A (de)
DE (1) DE1280505B (de)
FR (1) FR1435698A (de)
GB (1) GB1063543A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425484A (en) * 1966-02-02 1969-02-04 United States Steel Corp Apparatus for introducing coating metal to a vapor-deposition chamber
US3472308A (en) * 1966-08-29 1969-10-14 Multifastener Corp Method and apparatus for permanent mold casting
US3690367A (en) * 1968-07-05 1972-09-12 Anadite Inc Apparatus for the restructuring of metals
US3858641A (en) * 1971-02-12 1975-01-07 Minnesota Mining & Mfg Metal casting in thin walled molds
US4779790A (en) * 1985-08-08 1988-10-25 Pace Incorporated Job oriented method and apparatus utilizing molten solder for procedures such as soldering and desoldering

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628598A (en) * 1968-10-23 1971-12-21 Modern Equipment Co Casting molds
US3656539A (en) * 1969-01-29 1972-04-18 Amsted Ind Inc Apparatus for casting molten metal
US3814170A (en) * 1971-06-08 1974-06-04 F Kahn Apparatus for melting and casting material under pressure
US3976118A (en) * 1971-06-08 1976-08-24 Friedhelm Kahn Method for casting material under pressure
FR2210467B1 (de) * 1972-12-15 1975-03-28 Voisin Ets A
US4088177A (en) * 1976-01-07 1978-05-09 General Electric Company Permanent magnet D.C. dynamoelectric machine and method of making same
EP0008858A1 (de) * 1978-08-04 1980-03-19 Gkn Kent Alloys Limited Pressform
DE2950597A1 (de) * 1979-12-15 1981-07-02 Russ-Elektroofen Produktions-Gesellschaft mbH & Co KG, 5000 Köln Automatisiertes niederdruckgiessverfahren und vorrichtung zu seiner durchfuehrung
GB8414129D0 (en) * 1984-06-02 1984-07-04 Cosworth Res & Dev Ltd Casting of metal articles
GB2159445B (en) * 1984-06-02 1988-07-06 Cosworth Res & Dev Ltd Casting of metal articles
IT1268996B1 (it) * 1994-09-05 1997-03-18 Borli Engineering Srl Impianto di fusione multi stadi
DE10352183A1 (de) * 2003-11-05 2005-06-23 Dihag Deutsche Giesserei- Und Industrie-Holding Ag Gießverfahren zur Herstellung eines Gußteils
DE102006008359B4 (de) * 2006-02-21 2008-06-05 Direkt Form Gmbh Temperierbares Werkzeug aus einem gegossenen metallischen Werkstoff zur Formgebung von Werkstücken
DE102008027682B4 (de) * 2008-06-10 2011-03-17 Eduard Heidt Verfahren zum Herstellen von dünnwandigen und hochfesten Bauteilen
DE102018128605B4 (de) 2018-11-14 2020-07-30 Meissner Ag Modell- Und Werkzeugfabrik Gusswerkzeug, beispielsweise Kernschießwerkzeug oder Kokille, und ein entsprechendes Gießverfahren
CN109648061A (zh) * 2019-01-08 2019-04-19 哈尔滨工业大学 一种气压快速充型液态模锻成形装置及成形方法
DE102020103035A1 (de) 2020-02-06 2021-08-12 Meissner Ag Modell- Und Werkzeugfabrik Formwerkzeug mit Wärmeleiterstruktur sowie ein entsprechendes Verfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1416261A (en) * 1922-05-16 Feeding device fob die-casting machines
US1952201A (en) * 1931-08-12 1934-03-27 Sterling Corp Apparatus for casting
US2569150A (en) * 1948-05-07 1951-09-25 Joseph B Brennan Casting method and apparatus
US2680883A (en) * 1950-08-04 1954-06-15 Hpm Dev Corp Injection molding machine
US2839802A (en) * 1955-08-19 1958-06-24 Morris Bean & Company Method of casting metal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120038A (en) * 1962-08-29 1964-02-04 Cast Forge Corp High pressure permanent molding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1416261A (en) * 1922-05-16 Feeding device fob die-casting machines
US1952201A (en) * 1931-08-12 1934-03-27 Sterling Corp Apparatus for casting
US2569150A (en) * 1948-05-07 1951-09-25 Joseph B Brennan Casting method and apparatus
US2680883A (en) * 1950-08-04 1954-06-15 Hpm Dev Corp Injection molding machine
US2839802A (en) * 1955-08-19 1958-06-24 Morris Bean & Company Method of casting metal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425484A (en) * 1966-02-02 1969-02-04 United States Steel Corp Apparatus for introducing coating metal to a vapor-deposition chamber
US3472308A (en) * 1966-08-29 1969-10-14 Multifastener Corp Method and apparatus for permanent mold casting
US3690367A (en) * 1968-07-05 1972-09-12 Anadite Inc Apparatus for the restructuring of metals
US3858641A (en) * 1971-02-12 1975-01-07 Minnesota Mining & Mfg Metal casting in thin walled molds
US4779790A (en) * 1985-08-08 1988-10-25 Pace Incorporated Job oriented method and apparatus utilizing molten solder for procedures such as soldering and desoldering

Also Published As

Publication number Publication date
FR1435698A (fr) 1966-04-15
CH439605A (de) 1967-07-15
US3523570A (en) 1970-08-11
DE1280505B (de) 1968-10-17
GB1063543A (en) 1967-03-30

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