EP0741619B1 - Process for guiding rectangular strands in a guide system - Google Patents
Process for guiding rectangular strands in a guide system Download PDFInfo
- Publication number
- EP0741619B1 EP0741619B1 EP95906270A EP95906270A EP0741619B1 EP 0741619 B1 EP0741619 B1 EP 0741619B1 EP 95906270 A EP95906270 A EP 95906270A EP 95906270 A EP95906270 A EP 95906270A EP 0741619 B1 EP0741619 B1 EP 0741619B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- pct
- mold
- rolls
- continuous casting
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 230000002459 sustained effect Effects 0.000 claims 1
- 238000009749 continuous casting Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
Definitions
- the invention relates to a method for guiding rectangular strands in one Strand guide frame.
- Strand guiding structures are known from DE 36 27 991 C2 and WO-A-8912516, at for whom the rolls do not have straight, but curved surface lines. Such roles are coming always to be used when the mold outlet cross section is a strand cross section generated that differs significantly from the rectangular shape.
- the strand guide frame In the case of rectangular strands with strand thicknesses greater than 60 to 80 mm, the strand guide frame is used Rolls with straight lines, usually under the continuous casting mold (segment 0) Sheath lines are used, the sheath lines being in pairs opposite one another Roles are parallel to each other.
- the object of the invention is to provide a method for guiding rectangular strands To provide strand guiding scaffolding, through which the strings oscillate or flutter is prevented.
- the concave surface line of the rolls can extend over part of the strand width or over the extend the entire strand width.
- the total bulge of the strand should not exceed 8%, preferably 2-4%. With higher values, better leadership is not achieved on the other hand, there is an unnecessary rolling effort.
Abstract
Description
Die Erfindung betrifft eine Verfahren zur Fuhrung von Rechtecksträngen in einem Strangführungsgerüst.The invention relates to a method for guiding rectangular strands in one Strand guide frame.
Aus der DE 36 27 991 C2 und der WO-A-8912516 sind Strangführungsgerüste bekannt, bei denen die Rollen keine geraden, sondern gekurvte Mantellinien haben. Solche Rollen kommen immer dann zur Anwendung, wenn der Kokillenaustrittsquerschnitt einen Strangquerschnitt erzeugt, der erheblich von der Rechteckform abweicht.Strand guiding structures are known from DE 36 27 991 C2 and WO-A-8912516, at for whom the rolls do not have straight, but curved surface lines. Such roles are coming always to be used when the mold outlet cross section is a strand cross section generated that differs significantly from the rectangular shape.
Bei Rechtecksträngen mit Strangdicken größer 60 bis 80 mm werden im Strangführungsgerüst unmittelbar unter der Stranggießkokille (Segment 0) in der Regel Rollen mit geraden Mantellinien verwendet, wobei die Mantellinien jeweils paarweise einander gegenüberliegender Rollen zueinander parallel sind.In the case of rectangular strands with strand thicknesses greater than 60 to 80 mm, the strand guide frame is used Rolls with straight lines, usually under the continuous casting mold (segment 0) Sheath lines are used, the sheath lines being in pairs opposite one another Roles are parallel to each other.
Bei Strangführungsgerüsten mit derartigen Rollen ist die Gießgeschwindigkeit durch Pendeln der Stränge beschränkt, wobei folgende Werte üblicherweise angesetzt sind;
- für Brammen der Dicke 230 mm ca. 1.8 - 2.0 m/min
- für Vorblöcke der Dicke 270 mm ca. 1.5 - 1.7 m/min
- für Knüppel des Formats 100 x 100 mm ca. 2.5 m/min.
- for slabs with a thickness of 230 mm approx. 1.8 - 2.0 m / min
- for blooms with a thickness of 270 mm approx. 1.5 - 1.7 m / min
- for billets of 100 x 100 mm format approx.2.5 m / min.
Aufgabe der Erfindung ist es, ein Verfahren zum Führen von Rechtecksträngen in Strangführungsgerüsten bereitzustellen, durch das ein Pendeln oder Flattern der Stränge unterbunden wird. The object of the invention is to provide a method for guiding rectangular strands To provide strand guiding scaffolding, through which the strings oscillate or flutter is prevented.
Die Aufgabe wird gelöst durch die Merkmale des Anspruches 1. Die Unteransprüche beinhalten vorteilhafte Ausgestaltungen.The object is achieved by the features of claim 1. The subclaims contain advantageous refinements.
Es hat sich gezeigt, daß bei Verwendung von Stranggießkokillen mit Rechteckquerschnitt und zylindrischen Führungsrollen. und das ist bei der Mehrzahl aller zur Zeit weltweit im Einsatz befindlichen Stranggießanlagen der Fall, die Gießgeschwindigkeit bestimmte obere Werte nicht überschreiten darf, weil sonst die Zahl der Strangdurchbrüche überproportional ansteigt. Das ist eine Folge des Umstandes, daß ab einer bestimmten Gießgeschwindigkeit der Strang zu pendeln beginnt, d.h., er bewegt sich zwischen den Führungsrollen hin und her. Das führt zu Verkantungen und ungleichmäßiger Wärmeabfuhr am Strang in der Umgebung des Kokillenaustrittsquerschnitts und in der Folge zu Spannungsrissen und Strangdurchbrüchen.It has been shown that when using continuous casting molds with Rectangular cross section and cylindrical guide rollers. and that is the majority of all the case of continuous casting plants currently in use worldwide, the casting speed certain upper values must not exceed, otherwise the number of strand breaks increases disproportionately. This is a consequence of the fact that from a certain point Pouring speed the strand begins to oscillate, i.e. it moves between the Leadership roles back and forth. This leads to canting and uneven heat dissipation on Strand in the vicinity of the mold outlet cross section and subsequently to stress cracks and strand breaks.
Es hat sich nun überraschend gezeigt, daß durch die Erzeugung einer leichten Bombierung des Stranges das Pendeln unterbunden werden kann. Dabei weitet sich der Strang unmittelbar nach dem Austritt aus der Kokille infolge des noch flüssigen Kerns und der geringen Strangschalendicke sofort auf das durch die konkave Mantellinie der Rollen vorgegebene Maß auf. Es legt sich also an die Rollen an und erhält so eine Führung, die das Pendeln oder auch "snaking", wie es in der Literatur beschrieben wird, unterbindet.It has now surprisingly been found that by producing a slight crowning of the Stranges the commuting can be prevented. The strand widens immediately after leaving the mold due to the still liquid core and the low Strand shell thickness immediately to the dimension specified by the concave surface line of the rolls on. So it attaches itself to the roles and thus receives a guidance that the commuting or also "Snaking", as it is described in the literature, prevents.
Die konkave Mantellinie der Rollen kann sich über einen Teil der Strangbreite oder über die gesamte Strangbreite erstrecken. Die gesamte Ausbauchung des Stranges sollte maximal 8%, vorzugsweise 2-4%, betragen. Mit höheren Werten wird keine bessere Führung erzielt, dagegen ergibt sich ein unnötiger Walzaufwand. Eine konkave Mantellinie der Rollen über die gesamte Strangbreite, die im Bereich von 2-4% liegt, ergibt einen wesentlich besseren Ausgangsquerschnitt für das nachfolgende Walzen und erfüllt die dahingehenden Forderungen der Walzwerker.The concave surface line of the rolls can extend over part of the strand width or over the extend the entire strand width. The total bulge of the strand should not exceed 8%, preferably 2-4%. With higher values, better leadership is not achieved on the other hand, there is an unnecessary rolling effort. A concave surface line of the rolls over the total strand width, which is in the range of 2-4%, gives a much better Output cross section for the subsequent rolling and fulfills the relevant requirements the rolling mill.
Es ist sinnvoll, die Bombierung des Stranges bis zum Ende der Strangführung beizubehalten. It is advisable to maintain the crowning of the strand until the end of the strand guide.
Mit Hilfe der vorliegenden Erfindung ist es nicht nur möglich, bei neuen Anlagen die Gießgeschwindigkeit entsprechend zu steigern, sondern auch bei bestehenden Anlagen durch Nachrüsten mit entsprechend gestalteten Rollen die Gießgeschwindigkeit gegenüber den in der Einleitung genannten Werten um bis zu 200% zu erhöhen und gleichzeitig die Gießsicherzeit zu steigern.With the help of the present invention, it is not only possible in new systems To increase the casting speed accordingly, but also in existing systems by retrofitting with appropriately designed rollers, the casting speed compared to increase the values mentioned in the introduction by up to 200% and at the same time the Increase pouring safety time.
Claims (3)
- Method for the guiding of rectangular strands in a stand guiding roll stand with guide and drive rolls arranged in pairs opposite one another, which at least under load, have a slightly concave generatrix not exceeding 8% of the strand thickness, such that the material and diameter of the rolls are designed to allow the rolls to bend in the elastic range under the loads sustained during casting, by an amount corresponding to the desired convexity of the strand.
- Method according to Claim 1,
characterised in that
the concave generatrix extends only over part of the strand width, preferably 40%, and at its maximum the generatrix does not exceed 2 to 4% of the strand thickness. - Method according to either of the preceding claims,
characterised in that
the convexity of the strand is produced by correspondingly positioned divided rolls.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4403046 | 1994-01-28 | ||
DE4403046A DE4403046C1 (en) | 1994-01-28 | 1994-01-28 | Roll for a strand guide frame |
PCT/DE1995/000096 WO1995020447A1 (en) | 1994-01-28 | 1995-01-19 | Roller for a guide system for continuously cast metal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0741619A1 EP0741619A1 (en) | 1996-11-13 |
EP0741619B1 true EP0741619B1 (en) | 2000-09-27 |
Family
ID=6509212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95906270A Expired - Lifetime EP0741619B1 (en) | 1994-01-28 | 1995-01-19 | Process for guiding rectangular strands in a guide system |
Country Status (11)
Country | Link |
---|---|
US (1) | US6070646A (en) |
EP (1) | EP0741619B1 (en) |
JP (1) | JP2994757B2 (en) |
CN (1) | CN1057241C (en) |
AT (1) | ATE196617T1 (en) |
AU (1) | AU1453695A (en) |
CA (1) | CA2182021A1 (en) |
DE (2) | DE4403046C1 (en) |
ES (1) | ES2149965T3 (en) |
WO (1) | WO1995020447A1 (en) |
ZA (1) | ZA95675B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19841841C2 (en) * | 1998-03-09 | 2000-08-10 | Sms Demag Ag | Guide element of a continuous caster |
ATE305348T1 (en) * | 1998-03-09 | 2005-10-15 | Sms Demag Ag | GUIDING ELEMENT OF A CONTINUOUS CASTING PLANT |
AUPQ291199A0 (en) * | 1999-09-17 | 1999-10-07 | Bhp Steel (Jla) Pty Limited | Strip casting |
KR101353772B1 (en) * | 2011-12-14 | 2014-01-22 | 주식회사 포스코 | Apparatus and method for preventing swerving of slab |
CA2907118C (en) * | 2013-03-15 | 2021-02-16 | United States Postal Service | System and method of identity verification |
EP3235579B2 (en) * | 2016-04-18 | 2023-08-30 | SMS Group GmbH | Strand guiding device and method for supporting a cast strand |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT379093B (en) * | 1984-02-16 | 1985-11-11 | Voest Alpine Ag | CONTINUOUS CHOCOLATE FOR A CONTINUOUS CASTING SYSTEM |
JPS629758A (en) * | 1985-07-05 | 1987-01-17 | Sumitomo Metal Ind Ltd | Continuous casting machine |
JPS62148064A (en) * | 1985-12-24 | 1987-07-02 | Kobe Steel Ltd | Casting slab guide apparatus |
DE3627991A1 (en) * | 1986-08-18 | 1988-02-25 | Mannesmann Ag | METHOD FOR CONTINUOUSLY MOLDING SLABS AND DEVICE FOR CARRYING OUT THE METHOD |
JPH0763824B2 (en) * | 1987-05-18 | 1995-07-12 | 住友金属工業株式会社 | Pull-out correction device for continuous casting machine |
GB8814331D0 (en) * | 1988-06-16 | 1988-07-20 | Davy Distington Ltd | Continuous casting of steel |
JP2949711B2 (en) * | 1989-02-08 | 1999-09-20 | 住友金属工業株式会社 | Continuous casting roll for unsolidification reduction |
JPH0489161A (en) * | 1990-07-30 | 1992-03-23 | Nkk Corp | Method for using roll in continuous caster |
SU1771870A1 (en) * | 1991-01-14 | 1992-10-30 | Mariupolskij Metall I | Method of continuous casting of blanks with right-angle section |
JPH0790330B2 (en) * | 1992-01-14 | 1995-10-04 | 川崎重工業株式会社 | Horizontal continuous casting equipment |
JPH05245604A (en) * | 1992-03-05 | 1993-09-24 | Kawasaki Steel Corp | Continuous casting method |
IT1262073B (en) * | 1993-02-16 | 1996-06-19 | Danieli Off Mecc | LINGOTTIERA FOR CONTINUOUS CASTING OF THIN SLABS |
-
1994
- 1994-01-28 DE DE4403046A patent/DE4403046C1/en not_active Expired - Fee Related
-
1995
- 1995-01-19 WO PCT/DE1995/000096 patent/WO1995020447A1/en active IP Right Grant
- 1995-01-19 EP EP95906270A patent/EP0741619B1/en not_active Expired - Lifetime
- 1995-01-19 US US08/682,668 patent/US6070646A/en not_active Expired - Fee Related
- 1995-01-19 CA CA002182021A patent/CA2182021A1/en not_active Abandoned
- 1995-01-19 ES ES95906270T patent/ES2149965T3/en not_active Expired - Lifetime
- 1995-01-19 AU AU14536/95A patent/AU1453695A/en not_active Abandoned
- 1995-01-19 AT AT95906270T patent/ATE196617T1/en not_active IP Right Cessation
- 1995-01-19 CN CN95191378A patent/CN1057241C/en not_active Expired - Fee Related
- 1995-01-19 DE DE59508759T patent/DE59508759D1/en not_active Expired - Fee Related
- 1995-01-19 JP JP7519824A patent/JP2994757B2/en not_active Expired - Lifetime
- 1995-01-27 ZA ZA95675A patent/ZA95675B/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU1453695A (en) | 1995-08-15 |
ES2149965T3 (en) | 2000-11-16 |
ZA95675B (en) | 1996-02-07 |
JPH09508071A (en) | 1997-08-19 |
CN1139894A (en) | 1997-01-08 |
DE4403046C1 (en) | 1995-08-17 |
CN1057241C (en) | 2000-10-11 |
US6070646A (en) | 2000-06-06 |
ATE196617T1 (en) | 2000-10-15 |
JP2994757B2 (en) | 1999-12-27 |
CA2182021A1 (en) | 1995-08-03 |
EP0741619A1 (en) | 1996-11-13 |
DE59508759D1 (en) | 2000-11-02 |
WO1995020447A1 (en) | 1995-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3627991C2 (en) | ||
EP0286862A1 (en) | Process for manufacturing a steel strip | |
EP0834364B1 (en) | Method and device for high-speed continuous casting plants with reduction of the width during solidification | |
EP0741619B1 (en) | Process for guiding rectangular strands in a guide system | |
EP0734295B1 (en) | Continuous casting facility and a process for producing thin slabs | |
EP0917922B1 (en) | Process and plant for continuous casting slabs | |
EP0741620A1 (en) | Continuous casting facility for guiding continuously cast metal | |
EP0741618B1 (en) | Process for guiding a rectangular strand | |
EP1132161B1 (en) | Process for continuous casting slabs, especially thin slabs | |
DE2853868C2 (en) | Process for the continuous casting of steel as well as the correspondingly produced steel strand | |
EP2025432A1 (en) | Method for creating steel long products through strand casting and rolling | |
EP0154250A2 (en) | Method and apparatus for the continuous casting of metals between two cooled drums with parallel axes | |
WO2002090019A1 (en) | Method and device for continuously casting ingots, slabs or thin slabs | |
DE19746876C2 (en) | Method and device for producing narrow hot strip of different widths from thin slabs | |
EP0946318B1 (en) | Method and device for continuous thin slab steel casting | |
EP0996514A1 (en) | Method and device for producing thin slabs | |
AT410522B (en) | METHOD AND CONTINUOUS CASTING SYSTEM FOR VERTICAL CONTINUOUS CASTING OF A STEEL STRIP | |
EP1441871B1 (en) | Method and casting machine for production of casting bars in the shape of billets or blocks | |
EP0920938B1 (en) | Method and continuous casting facility for producing thin slabs | |
DE10025080A1 (en) | Method of making metal tape | |
EP1059125A2 (en) | Method for the manufacture of metal strip | |
DE1957758B2 (en) | Method for cooling metallic strands, in particular made of steel, in an arc continuous caster with a vertical continuous casting mold | |
DE19745547A1 (en) | Process and plant for the continuous casting of thin slabs | |
EP1214996B1 (en) | Thin-strip continuous casting machine | |
AT381050B (en) | METHOD FOR CONTINUOUS CASTING AND DEVICE FOR IMPLEMENTING THE METHOD |
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 |
|
17P | Request for examination filed |
Effective date: 19960614 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE ES FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19961106 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
RTI1 | Title (correction) |
Free format text: PROCESS FOR GUIDING RECTANGULAR STRANDS IN A GUIDE SYSTEM |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS DEMAG AG |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE ES FR GB IT |
|
REF | Corresponds to: |
Ref document number: 196617 Country of ref document: AT Date of ref document: 20001015 Kind code of ref document: T |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000927 |
|
ITF | It: translation for a ep patent filed |
Owner name: GUZZI E RAVIZZA S.R.L. |
|
REF | Corresponds to: |
Ref document number: 59508759 Country of ref document: DE Date of ref document: 20001102 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2149965 Country of ref document: ES Kind code of ref document: T3 |
|
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: GB Payment date: 20011214 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20011217 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20011226 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20011228 Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20020118 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20020220 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030119 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030119 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030120 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030801 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030930 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20030120 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050119 |