ATE12901T1 - METHOD AND DEVICE FOR AUTOMating A LOW-PRESSURE CASTING PROCESS. - Google Patents

METHOD AND DEVICE FOR AUTOMating A LOW-PRESSURE CASTING PROCESS.

Info

Publication number
ATE12901T1
ATE12901T1 AT81400001T AT81400001T ATE12901T1 AT E12901 T1 ATE12901 T1 AT E12901T1 AT 81400001 T AT81400001 T AT 81400001T AT 81400001 T AT81400001 T AT 81400001T AT E12901 T1 ATE12901 T1 AT E12901T1
Authority
AT
Austria
Prior art keywords
pressure
metal
cycle
fluid
furnace
Prior art date
Application number
AT81400001T
Other languages
German (de)
Inventor
Pierre L Merrien
Pierre A Merrien
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
Application granted granted Critical
Publication of ATE12901T1 publication Critical patent/ATE12901T1/en

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)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (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.
AT81400001T 1981-01-05 1981-01-05 METHOD AND DEVICE FOR AUTOMating A LOW-PRESSURE CASTING PROCESS. ATE12901T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE12901T1 true ATE12901T1 (en) 1985-05-15

Family

ID=8188495

Family Applications (1)

Application Number Title Priority Date Filing Date
AT81400001T ATE12901T1 (en) 1981-01-05 1981-01-05 METHOD AND DEVICE FOR AUTOMating A LOW-PRESSURE CASTING PROCESS.

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)

Families Citing this family (3)

* 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
CH666204A5 (en) * 1985-02-18 1988-07-15 Fischer Ag Georg METHOD AND DEVICE FOR CASTING MAGNESIUM-TREATED IRON.
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

Also Published As

Publication number Publication date
EP0055947B1 (en) 1985-04-24
AU556579B2 (en) 1986-11-13
FR2497471B1 (en) 1987-07-03
ZA819025B (en) 1982-11-24
FR2497471A1 (en) 1982-07-09
IN158838B (en) 1987-01-31
IL64628A (en) 1986-01-31
DE3170075D1 (en) 1985-05-30
EP0055947A1 (en) 1982-07-14
AU7915582A (en) 1982-07-15

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee