EP0063285A2 - Dispositif pour couler à différentes reprises des quantités de métal fondu à partir d'un récipient - Google Patents

Dispositif pour couler à différentes reprises des quantités de métal fondu à partir d'un récipient Download PDF

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Publication number
EP0063285A2
EP0063285A2 EP82102812A EP82102812A EP0063285A2 EP 0063285 A2 EP0063285 A2 EP 0063285A2 EP 82102812 A EP82102812 A EP 82102812A EP 82102812 A EP82102812 A EP 82102812A EP 0063285 A2 EP0063285 A2 EP 0063285A2
Authority
EP
European Patent Office
Prior art keywords
setpoint generator
control device
digital
memory
analog
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.)
Granted
Application number
EP82102812A
Other languages
German (de)
English (en)
Other versions
EP0063285B1 (fr
EP0063285A3 (en
Inventor
Gerd Wilhelm Dipl.-Ing. Drees
Jan Dr. Fabianowski
Rober Ing. Grad. Ibach
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0063285A2 publication Critical patent/EP0063285A2/fr
Publication of EP0063285A3 publication Critical patent/EP0063285A3/de
Application granted granted Critical
Publication of EP0063285B1 publication Critical patent/EP0063285B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations

Definitions

  • the invention relates to a device for the automatic control of a stopper for repeated pouring of liquid metal quantities from a storage vessel, the stroke of the stopper being influenced as a function of time to adapt the outflow rate to the swallowing capacity of the casting mold.
  • the pouring time and the lifting height of the stopper and thus indirectly the pouring speed can be specified analogously, for example using a potentiometer, or digitally.
  • the adjustment of the setting elements, for example the potentiometer generally does not pose any difficulties for the operating personnel.
  • the object of the invention is to simplify the setting of a new casting curve for the operating personnel and at the same time to achieve an optimal adaptation of the casting curve to the swallowing capacity of the casting mold. If possible, the pouring curve should correspond to a manually controlled pouring curve.
  • an operating lever for manually actuating the stopper mechanically on a potentiometer or the like acts as a setpoint generator that this setpoint generator is connected to a memory for storing the setpoint generator position as a function of time and that a device for plug actuation can be connected to the setpoint generator (manual pouring) or to the output of the memory (automatic pouring) via a switching device and at the interconnection of the setpoint generator with the device for plug actuation, the setpoint generator position can be stored as a function of time.
  • a changeover switch is provided, with which the switch is made to either manual or automatic pouring. Furthermore, a switch is provided in the transmitter, with which a control pulse is given to an electronic logic when the operating lever is moved from the zero position, which signals the start of the casting.
  • the memory itself which is advantageously designed as a digital memory, is via an analog digital converter with a potentiometer as setpoint generator and connected to the control device for actuating the stopper via a digital analog converter.
  • the electrical connection between the setpoint generator and the control device for actuating the stopper can run via the analog-digital converter and the digital-analog converter, but the setpoint generator can also be connected directly to the control device for the plug actuation.
  • the analog-digital or the digital-analog converter can be saved when an angle encoder or the like is used as the setpoint generator. is used or if the plug actuation device can be controlled with digital values. Even when using a potentiometer as a setpoint generator, the analog-digital and digital-analog converters can be avoided if an analog memory is used as the memory.
  • the device for plug actuation 6 essentially consists of an electromagnetic converter 7, which converts the electrical signal into a proportional movement and moves the plug 8 via a linkage 11.
  • the pouring opening 10 in the casting container 9 is e.g. a furnace or the like changed according to the given casting curve.
  • a signal proportional to the position of the potentiometer 4 is fed via line 18 to the analog digital converter 17.
  • the output of the analog-digital converter 17 is connected via the line 19 to a contact of the changeover switch 15.
  • the analog-digital converter 17 is connected via line 20 to the memory 26 and its output via line 21 to the second contact of the changeover switch 15.
  • the changeover switch 15 is connected to the input of the digital / analog converter 22, the output of which is connected to a summing element 23.
  • a value for the basic rule that can be set on the potentiometer 24 is also fed to the summing element 23.
  • the switch 14 it is set whether the casting process should take place manually using the operating lever 2 or automatically by querying the casting curve stored in the memory 26 g .
  • the changeover contact 15 is switched accordingly and a corresponding signal is given to the electronic logic circuit 13, so that in manual operation the pouring curve is simultaneously stored in the memory 26 via the line 20, while in automatic operation the stored curve is stored over the line 21 is given to the control device for the plug actuation.
  • FIG. 2 differs from FIG. 1 only in the arrangement of the analog digital converter 17 and the digital analog converter 22.
  • the output of the encoder 1 connected to the potentiometer 4 is connected directly via line 27 to the contact of the switch 15, which in turn is direct communicates with the summer 23.
  • a parallel branch leads from the output connected to the potentiometer 4 via the line 28 to the analog / digital converter 17, via the memory 26 to the digital / analog converter 22, and from there to the second contact of the changeover switch 15.
  • a sampling frequency of 10 Hz is generally sufficient, since this is generally much higher than the maximum frequency of the plug.
  • a digital, angle-coded setpoint generator 32 is used as the setpoint generator for the casting curve.
  • the digital memory 26 can be controlled directly via the line 30.
  • the output of the memory is connected to a contact of the switch 15.
  • the other contact of the switch is connected via line 27 to the output of the digital setpoint generator 32.
  • a component with digital control is used as summing element 33. This saves a digital-to-analog converter and an analog-to-digital converter.
  • a digital transmitter is also used as the basic level transmitter 35.
  • the electromagnetic converter 36 can also be controlled digitally.
  • FIG. 4 shows a further exemplary embodiment of the invention with an analog setpoint generator 4, which is connected to the summing element 23 via the line 27 and the changeover switch 15, as in FIG. 2.
  • the Output of the potentiometer 4 is connected via line 30 to an analog memory 34, the output of which is connected via line 31 to a contact of switch 15.
  • pouring curves can be saved when pouring into molds with different swallowing capacities.
  • An identifier for the respective casting curve can be attached to the casting mold, which may can be queried automatically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feedback Control In General (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
EP19820102812 1981-04-10 1982-04-02 Dispositif pour couler à différentes reprises des quantités de métal fondu à partir d'un récipient Expired EP0063285B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813114562 DE3114562A1 (de) 1981-04-10 1981-04-10 Vorrichtung zum wiederholten abgiessen fluessiger metallmengen aus einem vorratsgefaess
DE3114562 1981-04-10

Publications (3)

Publication Number Publication Date
EP0063285A2 true EP0063285A2 (fr) 1982-10-27
EP0063285A3 EP0063285A3 (en) 1983-02-16
EP0063285B1 EP0063285B1 (fr) 1985-08-14

Family

ID=6129885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820102812 Expired EP0063285B1 (fr) 1981-04-10 1982-04-02 Dispositif pour couler à différentes reprises des quantités de métal fondu à partir d'un récipient

Country Status (3)

Country Link
EP (1) EP0063285B1 (fr)
JP (1) JPS57177877A (fr)
DE (1) DE3114562A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787437A (en) * 1986-03-14 1988-11-29 Stopinc Aktiengesellschaft Method for starting a continuous casting plant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620294A (en) * 1969-07-11 1971-11-16 Trw Inc Semiautomatic metal casting apparatus
US3693066A (en) * 1970-08-24 1972-09-19 Computervision Corp Natural feeling common drive plotter-digitizer
US3920972A (en) * 1974-07-16 1975-11-18 Cincinnati Milacron Inc Method and apparatus for programming a computer operated robot arm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787437A (en) * 1986-03-14 1988-11-29 Stopinc Aktiengesellschaft Method for starting a continuous casting plant

Also Published As

Publication number Publication date
DE3114562A1 (de) 1982-10-28
EP0063285B1 (fr) 1985-08-14
DE3114562C2 (fr) 1987-12-10
EP0063285A3 (en) 1983-02-16
JPH0317587B2 (fr) 1991-03-08
JPS57177877A (en) 1982-11-01

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