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AU556579B2 - Automatic control of low-pressure casting cycle - Google Patents
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AU556579B2 - Automatic control of low-pressure casting cycle - Google Patents

Automatic control of low-pressure casting cycle

Info

Publication number
AU556579B2
AU556579B2 AU79155/82A AU7915582A AU556579B2 AU 556579 B2 AU556579 B2 AU 556579B2 AU 79155/82 A AU79155/82 A AU 79155/82A AU 7915582 A AU7915582 A AU 7915582A AU 556579 B2 AU556579 B2 AU 556579B2
Authority
AU
Australia
Prior art keywords
pressure
metal
cycle
fluid
furnace
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.)
Ceased
Application number
AU79155/82A
Other versions
AU7915582A (en
Inventor
Pierre A. Merrien
Pierre L. Merrien
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.)
Etudes Et Developpement En Metallurgie
Original Assignee
Edem Etude Dev & Metallurg
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 Edem Etude Dev & Metallurg filed Critical Edem Etude Dev & Metallurg
Publication of AU7915582A publication Critical patent/AU7915582A/en
Application granted granted Critical
Publication of AU556579B2 publication Critical patent/AU556579B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/08—Controlling, supervising, e.g. for safety reasons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Fluid Pressure (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

1. A process for automating a low pressure-type casting cycle of a metal in a closed mould, consisting of : - acting on an intensive single action variable, that is the pressure of the backflow fluid of the molten metal contained in the furnace in order to subject the metal to a cycle of variations of level and pressure, which cycle is divided into phases, is started when the metal passes the bottom of the mould by means of a presence sensor which serves to determine the reference pressure in the furnace at the start of the cycle which ends on completion of the decompression of the furnace, the said process being characterised in that : - after a preliminary preparation stage consisting of : a) dividing the said cycle into a particular number of successive phases, each phase corresponding, as a function of the shape of the part to be obtained and the desired metallurgical quality, to the determined conditions of time and value of the speed and/or pressure of the metal, b) and determining, for each of these phases, from the conditions to be applied to the metal, those to be applied to the pressure of the backflow fluid, - the pressure of the backflow fluid is continuously controlled during casting with a view to obtaining the characteristics desired for the metal in each phase, by dividing the duration of each phase into successive elementary steps, by effecting, at each step, a comparison between the real value of the said fluid pressure and the corresponding predetermined value in the said preliminary stage and by raising or reducing the real pressure of the fluid accordingly.
AU79155/82A 1981-01-05 1982-01-04 Automatic control of low-pressure casting cycle Ceased AU556579B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP81400001 1981-01-05
EP81400001A EP0055947B1 (en) 1981-01-05 1981-01-05 Process and means for the automation of a low pressure casting cycle

Publications (2)

Publication Number Publication Date
AU7915582A AU7915582A (en) 1982-07-15
AU556579B2 true AU556579B2 (en) 1986-11-13

Family

ID=8188495

Family Applications (1)

Application Number Title Priority Date Filing Date
AU79155/82A Ceased AU556579B2 (en) 1981-01-05 1982-01-04 Automatic control of low-pressure casting cycle

Country Status (8)

Country Link
EP (1) EP0055947B1 (en)
AT (1) ATE12901T1 (en)
AU (1) AU556579B2 (en)
DE (1) DE3170075D1 (en)
FR (1) FR2497471B1 (en)
IL (1) IL64628A (en)
IN (1) IN158838B (en)
ZA (1) ZA819025B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU574893B2 (en) * 1985-02-18 1988-07-14 Georg Fischer Aktiengesellschaft Casting iron treated with magnesium

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8320298D0 (en) * 1983-07-27 1983-09-01 Pereira J A T Apparatus for low pressure die-casting of metals
FR2599999B1 (en) * 1986-06-17 1989-09-15 Renault CASTING REGULATOR DEVICE, ESPECIALLY AT LOW PRESSURE

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1257708A (en) * 1960-02-22 1961-04-07 Griffin Wheel Co Pressure molding process and device for its implementation
LU40849A1 (en) * 1960-12-06 1962-01-22
FR1376884A (en) * 1963-11-19 1964-10-31 Ishikawajima Harima Heavy Ind Apparatus for automatically controlling the correlation between time and air pressure, especially for low pressure shell molding
FR2146148B1 (en) * 1971-07-21 1975-07-11 Peugeot & Renault
FR2189150A1 (en) * 1972-06-22 1974-01-25 Peugeot & Renault
US4047558A (en) * 1974-06-28 1977-09-13 Honsel Werke Aktiengesellschaft Metering device for metal casting machines, particularly low pressure casting machines
FR2295808A1 (en) * 1974-12-24 1976-07-23 Pont A Mousson LOW PRESSURE CASTING PROCESS AND PLANT IN SAND MOLD
FR2394347A1 (en) * 1977-06-15 1979-01-12 Novatome Ind METHOD AND DEVICE FOR REGULATING A LOW PRESSURE CASTING OPERATION
FR2460170A1 (en) * 1979-07-04 1981-01-23 Etude Dev Metallurg Automatic cycle for low pressure casting machine - where computer controls pressure of air or gas forcing molten metal upwards into mould or die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU574893B2 (en) * 1985-02-18 1988-07-14 Georg Fischer Aktiengesellschaft Casting iron treated with magnesium

Also Published As

Publication number Publication date
AU7915582A (en) 1982-07-15
FR2497471B1 (en) 1987-07-03
EP0055947B1 (en) 1985-04-24
ATE12901T1 (en) 1985-05-15
IL64628A (en) 1986-01-31
ZA819025B (en) 1982-11-24
DE3170075D1 (en) 1985-05-30
FR2497471A1 (en) 1982-07-09
IN158838B (en) 1987-01-31
EP0055947A1 (en) 1982-07-14

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