DE3170075D1 - Process and means for the automation of a low pressure casting cycle - Google Patents
Process and means for the automation of a low pressure casting cycleInfo
- Publication number
- DE3170075D1 DE3170075D1 DE8181400001T DE3170075T DE3170075D1 DE 3170075 D1 DE3170075 D1 DE 3170075D1 DE 8181400001 T DE8181400001 T DE 8181400001T DE 3170075 T DE3170075 T DE 3170075T DE 3170075 D1 DE3170075 D1 DE 3170075D1
- Authority
- DE
- Germany
- 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.)
- Expired
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
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.
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 |
---|---|
DE3170075D1 true DE3170075D1 (en) | 1985-05-30 |
Family
ID=8188495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8181400001T Expired DE3170075D1 (en) | 1981-01-05 | 1981-01-05 | Process and means for the automation of a 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) |
Families Citing this family (3)
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)
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 |
-
1981
- 1981-01-05 AT AT81400001T patent/ATE12901T1/en not_active IP Right Cessation
- 1981-01-05 DE DE8181400001T patent/DE3170075D1/en not_active Expired
- 1981-01-05 EP EP81400001A patent/EP0055947B1/en not_active Expired
- 1981-12-22 IL IL64628A patent/IL64628A/en not_active IP Right Cessation
- 1981-12-30 ZA ZA819025A patent/ZA819025B/en unknown
-
1982
- 1982-01-04 AU AU79155/82A patent/AU556579B2/en not_active Ceased
- 1982-01-05 FR FR8200115A patent/FR2497471B1/en not_active Expired
- 1982-07-12 IN IN526/DEL/82A patent/IN158838B/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU556579B2 (en) | 1986-11-13 |
IL64628A (en) | 1986-01-31 |
ATE12901T1 (en) | 1985-05-15 |
FR2497471B1 (en) | 1987-07-03 |
IN158838B (en) | 1987-01-31 |
AU7915582A (en) | 1982-07-15 |
EP0055947A1 (en) | 1982-07-14 |
EP0055947B1 (en) | 1985-04-24 |
ZA819025B (en) | 1982-11-24 |
FR2497471A1 (en) | 1982-07-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8339 | Ceased/non-payment of the annual fee |