EP0056777A2 - Kontrolle- und Regelungsverfahren beim Stranggiessen von Bändern zwischen Walzen zur Verhinderung des Anklebens - Google Patents

Kontrolle- und Regelungsverfahren beim Stranggiessen von Bändern zwischen Walzen zur Verhinderung des Anklebens Download PDF

Info

Publication number
EP0056777A2
EP0056777A2 EP82420009A EP82420009A EP0056777A2 EP 0056777 A2 EP0056777 A2 EP 0056777A2 EP 82420009 A EP82420009 A EP 82420009A EP 82420009 A EP82420009 A EP 82420009A EP 0056777 A2 EP0056777 A2 EP 0056777A2
Authority
EP
European Patent Office
Prior art keywords
frequency
speed
variations
reference frequency
increased
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
EP82420009A
Other languages
English (en)
French (fr)
Other versions
EP0056777A3 (en
EP0056777B1 (de
Inventor
Serge Bercovici
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.)
Cegedur Societe de Transformation de lAluminium Pechiney SA
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
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 Cegedur Societe de Transformation de lAluminium Pechiney SA filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Priority to AT82420009T priority Critical patent/ATE10591T1/de
Publication of EP0056777A2 publication Critical patent/EP0056777A2/de
Publication of EP0056777A3 publication Critical patent/EP0056777A3/fr
Application granted granted Critical
Publication of EP0056777B1 publication Critical patent/EP0056777B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels

Definitions

  • the present invention relates to a process for controlling and regulating the operating parameters of a machine for casting strips between rolls, making it possible to avoid sticking and to obtain maximum productivity.
  • the metal distributed by the nozzle fills the free space between the cylinders all along an arc of circle included between the plane of the outlet section of the nozzle and the plane of exit of the cylinders .
  • the metal cools, begins to solidify in a place called swamp, due to the presence of a more or less viscous mixture of crystals and liquid, located at a distance from the plane of the section outlet point of the nozzle generally called marsh depth. Then, the metal solidifies completely and is driven towards the exit plane of the cylinders in an increasingly restricted space, where it undergoes a rolling force which gradually brings it to the desired thickness when it escapes. by the space between cylinders in the form of a strip which is then taken up by a reel.
  • This strip is subsequently subjected to various mechanical and / or thermal treatments which lead to products such as thin sheets, for example, the mechanical characteristics of which: resistance, elastic limit, elongation, hardness, etc. will be part depending on the quality of the strip from the casting machine.
  • casting machines are used at speeds clearly lower than their possibility, so as to avoid the appearance of sticking, whatever the possible variations of the working factors.
  • This process in which the torque exerted on one or the other of the cylinders to advance the strip is used as parameters, and not the total torque, is characterized in that the frequency of the variations in the measurement is constantly compared. torque at a reference frequency; when the frequency of the variations is higher than the reference frequency, the casting speed of the machine is reduced and / or the die bit of lubricant is increased until the frequency of the variations becomes lower than the reference frequency and remains in this state for a given time, then the casting speed is increased as long as the frequency of the variations remains lower than the frequency reference.
  • the method according to the invention consists first of all in considering as a running parameter only the torque exerted on one or the other of the cylinders to advance the strip.
  • This parameter comes from the fact that it has been observed that, when the strip is bonded to one of the cylinders, almost all of the torque is supported by the opposite cylinder without appreciably affecting the total torque, which, in the absence of bonding, is distributed approximately equally between the two cylinders. It is therefore sufficient to consider one or the other of these couples to detect the sudden variation corresponding to the appearance of a collage. However, it may seem, under these conditions, that the process is limited to a rapid grasp of the phenomenon and an intervention aimed at eliminating it, which would not prevent the appearance of a defect on the tape and would lead in spite of everything to a partial scrap.
  • the method aims to provide for bonding and to provide the means to react before the defect has been able to manifest itself.
  • the speed reduction is obtained, for example, by varying the direct supply voltage of the cylinder drive motor; the lubricant flow is changed, for example, by a different setting of the intake valves.
  • This intervention does not occur immediately after the detection of a signal indicating that the frequency of the torque variations exceeds the reference frequency, but when this signal has been maintained for approximately five seconds, this so as to eliminate the fleeting increases which may occur and which are due to transient variations in certain walking parameters unrelated to the bonding phenomenon.
  • Reducing or increasing the machine speed can be done gradually or in fixed time steps.
  • the speed can be reduced for periods of time less than five minutes, by an amount less than 15% of the value it had at the instant immediately prior.
  • the invention will be better understood using the single figure representing a type of machine and on which one can see a supply rod (1) by which the liquid metal is admitted between the two cylinders (2 and 2 ') whose pins (3 and 4) are held by the chocks (5 and 6) integral with the column (7).
  • the two cylinders have their surface lubricated by means of the distribution ramps (8 and 8 ') supplied with lubricant by the valves (9 and 9'). After cooling and rolling, the metal leaves the machine in the form of a strip (10) which is wound in (11).
  • the cylinders are rotated in opposite directions by means of a motor (12).
  • the torque measurement on one of the cylinders is detected by means of the strain gauge (13). This measurement is transmitted to the computer (14) which controls in (15) the speed of the motor by modifying the voltage of the supply current and in (16 and 16 ') the admission of lubricant to the ramps via the valves ( 9 and 9 ').
  • a 1235 alloy is poured, the composition of which is described in "Standard for Aluminum Mill Products" published by ALUMINUM ASSOCIATION in the form of a strip 8 mm thick with a speed of 1.30 m / min and a lubricant flow of 10 1 / hour by means of a machine of the SCAL JUMBO 3C type equipped with a PERKIN ELMER 1620 mini-computer.
  • the speed of the machine and the valves admission of the lubricant not being controlled by the computer, the torque exerted on the lower cylinder is constantly measured by means of an extensometry gauge glued to the journal and sends the signal to an electronic device making it possible to directly detect the variations of the torque and also to electronically filter this signal so as to retain only those whose frequency is greater than one Hertz.
  • the registration of. signals before filtration shows variations on either side of an average value of the period couple of the order of 30 seconds while the filtered signal indicator remains at zero.
  • the strip After the strip has been discarded, it is replaced under the same operating conditions as above, that is to say a casting speed of 1.3 m / min and a lubricant flow rate of 10 1 / hour and it is controlled by the using the microcomputer according to the invention, the speed of the machine and the lubricant inlet valves at the indications of the filter signal. After 15 minutes When running, a frequency of variation of the torque measurement close to 3 hertz is detected. The lubricant flow is then automatically increased to 11 1 / hour and the casting speed reduced by 0.05 m / min. After a few seconds, the frequency of the variations returned to normal and the filtered signal zero. After five minutes of walking under these conditions, the speed is gradually increased to 1.4 m / min and the casting is continued at this speed without the appearance of new micro-bonding even after several hours of casting.
  • the method according to the invention finds its application in the continuous casting of metals between cylinders in all cases where it is desired to avoid sticking of the strip on the cylinders and to keep the machine running under conditions of maximum productivity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Sewing Machines And Sewing (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Saccharide Compounds (AREA)
  • Peptides Or Proteins (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Basic Packing Technique (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Moulding By Coating Moulds (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Metal Rolling (AREA)
EP82420009A 1981-01-19 1982-01-18 Kontrolle- und Regelungsverfahren beim Stranggiessen von Bändern zwischen Walzen zur Verhinderung des Anklebens Expired EP0056777B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82420009T ATE10591T1 (de) 1981-01-19 1982-01-18 Kontrolle- und regelungsverfahren beim stranggiessen von baendern zwischen walzen zur verhinderung des anklebens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8101185A FR2498099A2 (fr) 1981-01-19 1981-01-19 Procede de controle et de regulation de parametres de marche d'une machine de coulee continue de bandes entre cylindres permettant d'eviter le collage
FR8101185 1981-01-19

Publications (3)

Publication Number Publication Date
EP0056777A2 true EP0056777A2 (de) 1982-07-28
EP0056777A3 EP0056777A3 (en) 1982-08-18
EP0056777B1 EP0056777B1 (de) 1984-12-05

Family

ID=9254415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82420009A Expired EP0056777B1 (de) 1981-01-19 1982-01-18 Kontrolle- und Regelungsverfahren beim Stranggiessen von Bändern zwischen Walzen zur Verhinderung des Anklebens

Country Status (22)

Country Link
US (1) US4501315A (de)
EP (1) EP0056777B1 (de)
JP (1) JPS57165165A (de)
KR (1) KR880002370B1 (de)
AT (1) ATE10591T1 (de)
AU (1) AU546276B2 (de)
BG (1) BG45551A3 (de)
BR (1) BR8200252A (de)
CA (1) CA1185069A (de)
DD (1) DD201982A5 (de)
EG (1) EG15213A (de)
ES (1) ES8305233A2 (de)
FR (1) FR2498099A2 (de)
GB (1) GB2091455B (de)
GR (1) GR81337B (de)
HU (1) HU183802B (de)
IN (1) IN157291B (de)
MX (1) MX157804A (de)
MY (1) MY8500859A (de)
NO (1) NO157728C (de)
SU (1) SU1138008A3 (de)
YU (1) YU10282A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002321A1 (en) * 1990-08-03 1992-02-20 Davy Mckee (Poole) Limited Twin roll casting
WO1992002320A1 (en) * 1990-08-03 1992-02-20 Davy Mckee (Poole) Limited Twin roll casting
EP0504075A1 (de) * 1991-03-12 1992-09-16 Pechiney Rhenalu Verfahren zum Verhindern des Festklebens an den Walzen einer Walzgiessmaschine
EP0407978A3 (en) * 1989-07-14 1993-05-19 Hunter Engineering Company, Inc. Roll casting machine crown control

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727927A (en) * 1987-01-20 1988-03-01 Hunter Engineering Company, Inc. Casting machine control
FR2621839B1 (fr) * 1987-10-14 1992-02-21 Cegedur Procede de controle et de reglage de la lubrification de la face de travail des cylindres rotatifs d'une machine de coulee continue de bandes
US5638893A (en) * 1993-10-07 1997-06-17 Fata Hunter, Inc. Parting agent spray system
JPH0852519A (ja) * 1994-08-11 1996-02-27 Nippon Atsuen Kogyo Kk アルミニウムパンチング板の製造方法
BR112019002668B1 (pt) 2016-08-10 2022-07-26 Nucor Corporation Aparelho e método para fundição contínua de tira de metal; retentor de represa lateral e montagem de represa lateral para fundição contínua de tira de metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824346A (en) * 1955-01-28 1958-02-25 Ohio Crankshaft Co Method of controlling lubrication of continuous casting
FR1329801A (fr) * 1961-05-26 1963-06-14 Davy & United Eng Co Ltd Procédé et système de commande de laminoir
US3478808A (en) * 1964-10-08 1969-11-18 Bunker Ramo Method of continuously casting steel
DE2743579A1 (de) * 1976-10-05 1978-04-06 Centre Rech Metallurgique Verfahren zur steuerung des stranggiessens von metallen
BE869726A (fr) * 1978-08-11 1978-12-01 Centre Rech Metallurgique Procede de regulation de l'addition de poudre de couverture en coulee continue des metaux
FR2490516A1 (fr) * 1980-09-01 1982-03-26 Scal Gp Condit Aluminium Procede de controle et de regulation de parametres de marche d'une machine de coulee continue de bandes entre cylindres

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407978A3 (en) * 1989-07-14 1993-05-19 Hunter Engineering Company, Inc. Roll casting machine crown control
WO1992002321A1 (en) * 1990-08-03 1992-02-20 Davy Mckee (Poole) Limited Twin roll casting
WO1992002320A1 (en) * 1990-08-03 1992-02-20 Davy Mckee (Poole) Limited Twin roll casting
EP0504075A1 (de) * 1991-03-12 1992-09-16 Pechiney Rhenalu Verfahren zum Verhindern des Festklebens an den Walzen einer Walzgiessmaschine
FR2673865A1 (fr) * 1991-03-12 1992-09-18 Rhenalu Pechiney Procede permettant d'eviter la coulure sur une machine de coulee entre cylindres.
US5224535A (en) * 1991-03-12 1993-07-06 Pechiney Rhenalu Method of avoiding run out on a machine for casting between rolls

Also Published As

Publication number Publication date
AU546276B2 (en) 1985-08-22
EG15213A (en) 1991-06-30
EP0056777A3 (en) 1982-08-18
ES508822A0 (es) 1983-04-01
FR2498099B2 (de) 1983-02-18
NO157728B (no) 1988-02-01
US4501315A (en) 1985-02-26
BG45551A3 (bg) 1989-06-15
FR2498099A2 (fr) 1982-07-23
KR830008770A (ko) 1983-12-14
YU10282A (en) 1986-04-30
GR81337B (de) 1984-12-11
BR8200252A (pt) 1982-11-23
JPS57165165A (en) 1982-10-12
HU183802B (en) 1984-06-28
JPS6238071B2 (de) 1987-08-15
ATE10591T1 (de) 1984-12-15
MX157804A (es) 1988-12-15
IN157291B (de) 1986-02-22
SU1138008A3 (ru) 1985-01-30
GB2091455A (en) 1982-07-28
CA1185069A (fr) 1985-04-09
EP0056777B1 (de) 1984-12-05
GB2091455B (en) 1984-05-10
MY8500859A (en) 1985-12-31
ES8305233A2 (es) 1983-04-01
DD201982A5 (de) 1983-08-24
KR880002370B1 (en) 1988-11-03
NO157728C (no) 1988-05-11
AU7958582A (en) 1982-07-29
NO820138L (no) 1982-07-20

Similar Documents

Publication Publication Date Title
EP0047218B1 (de) Kontroll- und Regelverfahren beim kontinuierlichen Giessen von Bändern
EP0056777B1 (de) Kontrolle- und Regelungsverfahren beim Stranggiessen von Bändern zwischen Walzen zur Verhinderung des Anklebens
EP0719607B1 (de) Verfahren zur Regelung des kontinuierlichen Giessens zwischen Walzen
EP0036342B1 (de) Verfahren zur Kontrolle der Strangkühlung beim Stranggiessen
EP0142415B1 (de) Steuerverfahren einer Vorrichtung für Einkristallzüchtung
FR2543057A1 (fr) Procede et dispositif pour obtenir un debit maximum d'une extrudeuse a vis double
FR2458353A1 (fr) Procede et dispositif pour commander l'avance de la lame d'une scie a ruban horizontale dans la piece a scier
EP0421828A1 (de) Verfahren zur kontinuierlichen Bestimmung der flüssigen Schlackendicke auf der Oberfläche eines Schmelzbades in einem metallurgischen Behälter
CA2259110C (fr) Procede de pilotage d'une operation d'ecrouissage en continu d'une bande metallique
CA1286234C (fr) Procede de controle et de reglage de la lubrification de la face de travail des cylindres rotatifs d'une machine de coulee continue de bandes
EP0041025B1 (de) Verfahren und Vorrichtung zum Walzen von Metall ohne Walzgutspannung
FR2610551A1 (fr) Procede de fabrication de bandes minces de bronze au phosphore
BE1013802A3 (fr) Dispositif de chauffage sans metal de wood permettant la mesure de la volatilite noack d'un echantillon liquide de produit petrolier notamment d'une huile lubrifiante ainsi que procede mis en oeuvre lors de l'utilisation de ce dispositif.
EP0246940B1 (de) Verfahren und Vorrichtung zum Regeln der Unterkühlung der Erstarrungsfront eines Einkristalls während des Wachsens und Anwendung dieser Einkristallregelung
FR2723011A1 (fr) Prevention de la rupture ou d'irregularites d'epaisseur d'une bande metallique en defilement dans untrain de laminage
EP0000454B1 (de) Verfahren zum Steuern der Walzgutspannung zwischen aufeinanderfolgenden Walzgerüsten beim Warmwalzen von dickem Walzgut.
FR2518072A1 (fr) Rateleur a pont pour l'alimentation directe de matiere en tas
EP0504075A1 (de) Verfahren zum Verhindern des Festklebens an den Walzen einer Walzgiessmaschine
EP0564316A1 (de) Verfahren zum Stranggiessen
WO1992018273A1 (fr) Procede de controle dynamique de la vitesse d'extraction lors d'un cycle de cicatrisation apres collage, dans un processus de coulee continue d'acier
BE455508A (de)
FR3089024A1 (fr) Appareil numérique de régulation d’un processus industriel
CA2013853A1 (fr) Procede et dispositif d'obtention de produits metalliques minces par coulee continue
FR2724335A1 (fr) Procede de prevention de marquage de bande metallique defilant dans une installation de traitement au contact d'au moins un cylindre en rotation
EP0486453A1 (de) Verfahren und Anordnung zum Läuten einer Glocke

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT CH IT LI SE

AK Designated contracting states

Designated state(s): AT CH IT LI SE

17P Request for examination filed

Effective date: 19820904

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CEGEDUR SOCIETE DE TRANSFORMATION DE L'ALUMINIUM P

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH IT LI SE

REF Corresponds to:

Ref document number: 10591

Country of ref document: AT

Date of ref document: 19841215

Kind code of ref document: T

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19891220

Year of fee payment: 9

Ref country code: AT

Payment date: 19891220

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19891221

Year of fee payment: 9

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19910118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19910119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19910131

Ref country code: CH

Effective date: 19910131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 82420009.1

Effective date: 19910910