DE1097626B - Method for controlling casting machines for metallic casting materials, in particular centrifugal casting machines - Google Patents
Method for controlling casting machines for metallic casting materials, in particular centrifugal casting machinesInfo
- Publication number
- DE1097626B DE1097626B DER25235A DER0025235A DE1097626B DE 1097626 B DE1097626 B DE 1097626B DE R25235 A DER25235 A DE R25235A DE R0025235 A DER0025235 A DE R0025235A DE 1097626 B DE1097626 B DE 1097626B
- Authority
- DE
- Germany
- Prior art keywords
- casting
- machines
- metallic
- casting machines
- controlling
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/107—Means for feeding molten metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
- B22D13/023—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis the longitudinal axis being horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/12—Controlling, supervising, specially adapted to centrifugal casting, e.g. for safety reasons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
Description
DEUTSCHESGERMAN
Die Steuerung von Gießmaschinen, insbesondere von Schleudergießmaschinen, erfolgte bisher von Hand und unterlag damit weitgehend subjektiven Einflüssen. So stellt beispielsweise beim Schleudergießen von gußeisernen Muffenrohren der Steuermann der Maschine den überaus wichtigen Zeitpunkt des Eiseneinfalls in den Muffenhohlraum der Kokille mit bloßem Auge fest und setzt nach einer gewissen Zeit die Maschine in Bewegung. Die Schwierigkeiten, in diesem Fall eine automatische Steuerung anzuwenden, bestehen dabei hauptsächlich in der Unzugänglichkeit des Kokilleninnenraumes.Casting machines, in particular centrifugal casting machines, have so far been controlled by hand and was therefore largely subject to subjective influences. For example, in the centrifugal casting of cast iron Sleeves the helmsman of the engine the all-important point in time of the iron incursion the socket cavity of the mold with the naked eye and sets the machine after a certain time moving. There are difficulties in using automatic control in this case mainly in the inaccessibility of the mold interior.
Durch die vorliegende Erfindung sollen nun diese Schwierigkeiten umgangen und ein Verfahren zum Steuern von Gießmaschinen, insbesondere von Schleudergießmaschinen, geschaffen werden, welches darin besteht, daß die Steuerung ihren Impuls durch die Änderung des bewußt zwischen dem Gießgefäß und der metallischen Gießform geschaffenen elektrischen Isolationswiderstandes durch die elektrische Leitfähigkeit des in die Gießform einfallenden Gießstrahles erhält.The present invention is intended to circumvent these difficulties and provide a method for Controlling casting machines, in particular centrifugal casting machines, are created, which is therein consists in that the controller changes its momentum consciously between the pouring vessel and the electrical insulation resistance created by the metallic casting mold due to the electrical conductivity of the pouring stream falling into the mold.
Dabei wird bei Schleudergießmaschinen erfindungsgemäß der Rinnentisch einschließlich der Zulaufrinne oder die Zulaufrinne oder deren Teile allein gegenüber dem Maschinenfundament bzw. gegenüber dem Rinnentisch elektrisch isoliert.In the case of centrifugal casting machines, according to the invention, the channel table including the inlet channel is used or the inlet channel or its parts alone against the machine foundation or against the Electrically insulated channel table.
Die sprunghafte Abnahme des elektrischen Isolationswiderstandes beim Einfallen des Gießstrahles in die Kokille, die praktisch ohne jede Verzögerung stattfindet, wird mit Hilfe eines empfindlichen Gerätes, beispielsweise eines elektronischen Schalters, ausgenutzt und in einen Steuerimpuls zur Ingangsetzung der Gießmaschine umgewandelt. Beim Gießen von Muffenrohren in Schleudergießmaschinen wird durch den Impuls ein Zeitgeber eingeschaltet, der nach der vorgegebenen Auffüllzeit die Maschine in Bewegung setzt.The sudden decrease in the electrical insulation resistance when the pouring stream hits it into the mold, which takes place practically without any delay, is carried out with the help of a sensitive device, for example an electronic switch, exploited and in a control pulse for starting the casting machine converted. When casting socket pipes in centrifugal casting machines, through the impulse a timer is switched on, which after the specified filling time the machine in motion puts.
In weiterer Ausgestaltung der Erfindung wird durch diesen Impuls nicht nur der Arbeitsbeginn der Gießmaschine, sondern die selbsttätige Steuerung sämtlicher einzelner Arbeitsgänge des Gießprozesses eingeleitet.In a further embodiment of the invention, this pulse not only starts work Casting machine, but the automatic control of all individual operations in the casting process initiated.
In der Zeichnung ist das erfindungsgemäße Verfahren an Hand der Steuerung einer Schleudergießmaschine erläutert.In the drawing, the method according to the invention is shown using the control of a centrifugal casting machine explained.
Es bezeichnet 1 den Gießtisch mit dem Kippbehälter 2 und der Gieß rinne 3, welche in die metallene Kokille 4 bis zum Muffenhohlraum 5 hineinragt. Der Gießtisch 1 ist gegenüber dem Maschinenfundament 6 und damit gegenüber der Kokille 4, welche sich in der Abbildung im Anfahrzustand befindet, elektrisch isoliert.It denotes 1 the casting table with the tilting container 2 and the casting channel 3, which in the metal Mold 4 protrudes as far as the socket cavity 5. The casting table 1 is opposite the machine foundation 6 and thus opposite the mold 4, which is in the start-up state in the figure, electrically isolated.
Durch das Einfallen des Gießstrahles 7 in die VerfahrenBy the incidence of the pouring stream 7 in the process
zum Steuern von Gießmaschinenfor controlling casting machines
für metallische Gießwerkstoffe,for metallic casting materials,
insbesondere von Schleudergießmaschinenespecially of centrifugal casting machines
Anmelder:Applicant:
Rheinstahl Eisenwerke GelsenkirchenRheinstahl Eisenwerke Gelsenkirchen
Aktienges ells chaf t,
Gelsenkirchen, Hohenzollernstr. 2-4Aktiengesellschaft,
Gelsenkirchen, Hohenzollernstr. 2-4
Helmut Freundlieb, Essen,
ist als Erfinder genannt wordenHelmut Freundlieb, food,
has been named as the inventor
Kokille 4 wird der zwischen der Kokille 4 und dem Gießtisch 1 bzw. der Gießrinne 3 bestehende elektrische Isolationswiderstand durch die Leitfähigkeit des metallischen Gießstrahles vermindert. Diese Änderung wird an den Klemmen 8 durch Instrumente gemessen und in einen Steuerimpuls umgewandelt, welcher nach erfolgtem Auffüllen des Muffenhohlraumes 5 mit Gießwerkstoff die Maschine in Achsrichtung in Bewegung setzt. In Abweichung von der Zeichnung kann statt des gesamten Gießtisches 1 beispielsweise auch nur die Zulauf rinne 3 oder ein Teil derselben gegenüber dem Maschinenfundament 6 bzw. dem Gießtisch 1 elektrisch isoliert sein.The mold 4 is the electrical existing between the mold 4 and the casting table 1 or the casting channel 3 Insulation resistance reduced by the conductivity of the metallic pouring stream. This change is measured at the terminals 8 by instruments and converted into a control pulse, which after Once the socket cavity 5 has been filled with casting material, the machine moves in the axial direction puts. In a departure from the drawing, instead of the entire casting table 1, for example also only the inlet channel 3 or part of it opposite the machine foundation 6 or the casting table 1 must be electrically isolated.
Claims (3)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL240852D NL240852A (en) | 1959-03-28 | ||
DER25235A DE1097626B (en) | 1959-03-28 | 1959-03-28 | Method for controlling casting machines for metallic casting materials, in particular centrifugal casting machines |
FR796163A FR1226821A (en) | 1959-03-28 | 1959-05-30 | Method for controlling machines for casting metal casting materials, in particular centrifugal casting machines |
GB2680259A GB883237A (en) | 1959-03-28 | 1959-08-05 | An improved method of controlling casting machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER25235A DE1097626B (en) | 1959-03-28 | 1959-03-28 | Method for controlling casting machines for metallic casting materials, in particular centrifugal casting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1097626B true DE1097626B (en) | 1961-01-19 |
Family
ID=7401864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER25235A Pending DE1097626B (en) | 1959-03-28 | 1959-03-28 | Method for controlling casting machines for metallic casting materials, in particular centrifugal casting machines |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1097626B (en) |
FR (1) | FR1226821A (en) |
GB (1) | GB883237A (en) |
NL (1) | NL240852A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1206077A (en) * | 1968-03-22 | 1970-09-23 | Luitpoldhutte Ag | Improvements in or relating to centrifugal casting machines |
-
0
- NL NL240852D patent/NL240852A/xx unknown
-
1959
- 1959-03-28 DE DER25235A patent/DE1097626B/en active Pending
- 1959-05-30 FR FR796163A patent/FR1226821A/en not_active Expired
- 1959-08-05 GB GB2680259A patent/GB883237A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB883237A (en) | 1961-11-29 |
NL240852A (en) | |
FR1226821A (en) | 1960-08-16 |
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