EP0312744B1 - Internally cooled roll and method for manufacturing the same - Google Patents
Internally cooled roll and method for manufacturing the same Download PDFInfo
- Publication number
- EP0312744B1 EP0312744B1 EP88114237A EP88114237A EP0312744B1 EP 0312744 B1 EP0312744 B1 EP 0312744B1 EP 88114237 A EP88114237 A EP 88114237A EP 88114237 A EP88114237 A EP 88114237A EP 0312744 B1 EP0312744 B1 EP 0312744B1
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- EP
- European Patent Office
- Prior art keywords
- coolant
- width
- internally cooled
- core
- sectional element
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 3
- 239000002826 coolant Substances 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 4
- 229910000754 Wrought iron Inorganic materials 0.000 claims 3
- 238000005492 weld surfacing Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- B22D11/12—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 an internally cooled roller, consisting of a core, with at least one helically running coolant channel embedded in its surface, which is connected via radially directed bores to axially directed central channels for the coolant inflow and outflow, and from a cover layer, the cover layer is composed of a profile element covering the coolant channel, which is welded to the core, and of a welding material filling, with which the gap between adjacent side surfaces of the profile element is filled.
- the invention further includes a method of making an internally cooled roll.
- Such a roller is known from PS 32 31 433.
- the coolant channel which is wider than it is deep, is covered by a sleeve welded to the core, the sleeve being applied to the core in the form of a tape covering the coolant channel and the tape edges being filled with the end face while filling the gap between the Band edges are connected by means of electric arc welding.
- Such internally cooled rolls are used as support and / or transport rolls in continuous casting plants, where they are subjected to considerable mechanical loads for the purpose of supporting the strand, which is heated up to 1,200 ° C.
- the object of the invention is to optimize the internally cooled roll according to the type of the invention with regard to its thermal stability and its cooling effect on the strand and to ensure that the thermal stability and the cooling effect are retained over a longer operating period.
- the depth of the coolant channel is greater than its width
- that the profile element, seen in cross section has the shape of a circular surface from which a segment is cut
- that the profile element has a radius in the circular surface part that is greater than half the width of the coolant channel and that the profile element is arranged such that its - in the axial direction - its straight outer surface is parallel to the jacket of the core and that the profile element and the filler material are coated with a wear layer that forms the outer jacket of the roller.
- the advantage associated with the creation results from the interaction of the individual features. Due to the relatively large depth of the coolant channel, a sufficient cross section is available for the passage of the coolant, and a characteristic in the heat gradient in the jacket area of the roll that has a favorable influence on the life of the roll is provided.
- the flattening in the profile element brings the cooling effect sufficiently close to the wear layer forming the outer jacket, which can be produced from material which is particularly wear-resistant under thermal stresses.
- inexpensive material combinations can be selected which are adapted to the respective requirements.
- roller according to the invention even when subjected to heat from one side, as in a temporary standstill during casting, maintains its thermal stability and is not impaired in its operability.
- the further object of the invention to find an advantageous method for producing an internally cooled roller, which is designed according to one of claims 1 to 5, is achieved by the features of claim 6 in that the cooling channel is first of all with a round bar, the radius of which Radius of the profile element corresponds, is covered, the round bar is welded to the core on both sides of the cooling channel, a filler material is introduced into the gap between adjacent sections of the round bar, the roll blank thus formed is subjected to machining to produce the cross-sectional profile of the profile element, by cladding the wear layer is applied and finally a smooth roller surface is produced by mechanical processing of the wear layer.
- the method according to the invention has the advantage in terms of production technology that it can follow the helical course well by using a round bar, ie a thick wire, to cover the coolant channel.
- a twisting of the round iron, due to the slope of the helix, has no influence on the production.
- the flattening of the round bar to produce the final cross section of the profile element is only produced when the roller blank is finished after the welding material filling has been inserted between the round bars.
- the filler material is not introduced up to the upper edge of the gap, but only as far as is to be turned later.
- the internally cooled roller shown in Fig. 1 has a core 1 with a recessed in its surface helically extending coolant channel 2 and a further, helically extending coolant channel 2 ', which together form a two-start spiral.
- the coolant channels 2, 2 ' are connected via radially directed bores 3, 3' to a first axially directed central channel 4 for the coolant supply.
- the coolant channels 2, 2 ' are each covered by a profile element 7, 7', wherein the profile element 7, 7 'seen in cross section has the shape of a circular area from which a segment is cut off.
- a filler material 8 is provided between adjacent sections of the profile elements 7, 7 '.
- the profile elements 7, 7 'and the welding material filling 8 are covered with a wear layer 9 which forms the outer jacket of the roller.
- Flow arrows 10 and 11 are intended to indicate the coolant circuit.
- the coolant flows in via the first axially directed central channel 4, is distributed over the two radially directed bores 3, 3 'to the two coolant channels 2, 2', comes back into the central region of the core 1 and finally exits again via the second axial central channel 5 .
- An annular cylindrical sealing plug 12 separates the inlet and outlet area in the coolant circuit.
- FIG. 2 shows, on an enlarged scale, the section A from FIG. 1 outlined in dash-dot lines.
- the profile element 7 has a radius r that is greater than half the width b of the coolant channel 2.
- the profile element 7 and correspondingly the adjacent profile element 7 ' is arranged so that its - viewed in the axial direction - straight outer surface 14 is parallel to the shell of the core 1.
- the radial thickness d of the profile element 7 corresponds approximately to 0.7 times its width e.
- the rolled blank thus formed is subjected to machining, the outer segment being removed from the circular cross section of the round bars, which ultimately creates the final profile of the profile elements.
- Part of the welding material fill is removed again, and finally there is a smooth outer surface to which the wear layer is applied by possibly multi-layer deposition welding.
- a smooth outer jacket of the internally cooled roller can then be produced in a machining finish.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Die Erfindung betrifft eine innengekühlte Walze, bestehend aus einem Kern, mit mindestens einem in seiner Oberfläche eingelassenen wendelförmig verlaufenden Kühlmittelkanal, der über radial gerichtete Bohrungen mit axial gerichteten Zentralkanälen für den Kühlmittelzu- und -abfluß verbunden ist, und aus einer Deckschicht, wobei die Deckschicht aus einem den Kühlmittelkanal abdeckenden Profilelement, das mit dem Kern verschweißt ist, und aus einer Schweißwerkstoffüllung, mit dem der Spalt zwischen benachbarten Seitenflächen des Profilelementes abgefüllt ist, zusammengesetzt ist.The invention relates to an internally cooled roller, consisting of a core, with at least one helically running coolant channel embedded in its surface, which is connected via radially directed bores to axially directed central channels for the coolant inflow and outflow, and from a cover layer, the cover layer is composed of a profile element covering the coolant channel, which is welded to the core, and of a welding material filling, with which the gap between adjacent side surfaces of the profile element is filled.
Die Erfindung beinhaltet ferner ein Verfahren zur Herstellung einer innengekühlten Walze.The invention further includes a method of making an internally cooled roll.
Eine derartige Walze ist aus der PS 32 31 433 bekannt. Bei der bekannten Walze ist der Kühlmittelkanal, der breiter ist als tief, über eine mit dem Kern verschweißte Hülse abgedeckt, wobei die Hülse in Form eines den Kühlmittelkanal abdeckenden Bandes auf den Kern aufgebracht ist und die Bandkanten mit der Stirnfläche unter Auffüllen des Spaltes zwischen den Bandkanten mittels Elekrolichtbogenschweißens verbunden sind.Such a roller is known from PS 32 31 433. In the known roller, the coolant channel, which is wider than it is deep, is covered by a sleeve welded to the core, the sleeve being applied to the core in the form of a tape covering the coolant channel and the tape edges being filled with the end face while filling the gap between the Band edges are connected by means of electric arc welding.
Derartige innengekühlte Walzen finden als Stütz- und/oder Transportwalzen in Stranggießanlagen Verwendung, wo sie zum Zweck der Abstützung des bis zu 1.200 °C heißen Stranges erheblichen mechanischen Belastungen unterworfen sind.Such internally cooled rolls are used as support and / or transport rolls in continuous casting plants, where they are subjected to considerable mechanical loads for the purpose of supporting the strand, which is heated up to 1,200 ° C.
Aufgabe der Erfindung ist es, die innengekühlte Walze gemäß der Gattung der Erfindung bezüglich ihrer thermischen Stabilität und ihrer Kühlwirkung auf den Strang zu optimieren und dafür zu sorgen, daß die thermische Stabilität und die Kühlwirkung über einen längeren Betriebszeitraum erhalten bleiben.The object of the invention is to optimize the internally cooled roll according to the type of the invention with regard to its thermal stability and its cooling effect on the strand and to ensure that the thermal stability and the cooling effect are retained over a longer operating period.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Tiefe des Kühlmittelkanals größer ist als seine Breite, daß das Profilelement im Querschnitt gesehen die Form einer Kreisfläche, von der ein Segment abgeschnitten ist, hat, daß das Profilelement im Kreisflächenteil einen Radius hat, der größer ist als die halbe Breite des Kühlmittelkanals und daß das Profilelement so angeordnet ist, daß seine - in Achsrichtung betrachtet - gerade Außenfläche parallel zum Mantel des Kernes liegt und daß das Profilelement und die Schweißwerkstoffüllung mit einer Verschleißschicht überzogen sind, die den Außenmantel der Walze bildet.This object is achieved in that the depth of the coolant channel is greater than its width, that the profile element, seen in cross section, has the shape of a circular surface from which a segment is cut, that the profile element has a radius in the circular surface part that is greater than half the width of the coolant channel and that the profile element is arranged such that its - in the axial direction - its straight outer surface is parallel to the jacket of the core and that the profile element and the filler material are coated with a wear layer that forms the outer jacket of the roller.
Der mit der Erfingung verbundene Vorteil ergibt sich aus dem Zusammenwirken der einzelnen Merkmale. Durch die relativ große Tiefe des Kühlmittelkanals steht ein ausreichender Querschnitt für die Durchleitung des Kühlmittels zur Verfügung, und es wird für eine die Lebensdauer der Walze günstig beeinflussende Charakteristik im Wärmegefälle im Mantelbereich der Walze gesorgt. Die Abplattung im Profilelement bringt die Kühlwwirkung hinreichend nah an die den Außenmantel bildende Verschleißschicht, die aus bei den thermischen Beanspruchungen besonders verschleißfestem Werkstoff hergestellt werden kann. Insgesamt lassen sich bezüglich des Kernes, des Profilelements, der Schweißwerkstofffüllung und Verschleißschicht günstige, den jeweiligen Erfordernissen angepaßte Werkstoffkombinationen wählen.The advantage associated with the creation results from the interaction of the individual features. Due to the relatively large depth of the coolant channel, a sufficient cross section is available for the passage of the coolant, and a characteristic in the heat gradient in the jacket area of the roll that has a favorable influence on the life of the roll is provided. The flattening in the profile element brings the cooling effect sufficiently close to the wear layer forming the outer jacket, which can be produced from material which is particularly wear-resistant under thermal stresses. Overall, with regard to the core, the profile element, the welding material filling and the wear layer, inexpensive material combinations can be selected which are adapted to the respective requirements.
Versuchseinsätze haben zusätzlich ergeben, daß die erfindungsgemäße Walze auch bei einseitiger Wärmebeaufschlagung, wie sie bei einem vorübergehenden Stillstand während des Gießens auftreten kann, ihre thermische Stabilität behält und in ihrer Betriebsfähigkeit nicht beeinträchtigt ist.Trials have also shown that the roller according to the invention, even when subjected to heat from one side, as in a temporary standstill during casting, maintains its thermal stability and is not impaired in its operability.
Auf Ausgestaltungen der Erfindung gemäß den unter Ansprüchen 2 bis 5 wird verwiesen.Reference is made to embodiments of the invention according to
Die weitere Aufgabe der Erfindung, ein zum Herstellen einer innengekühltn Walze, die nach einem der Ansprüche 1 bis 5 gestaltet ist, vorteilhaftes Verfahren zu finden, wird durch die Merkmale des Patentanspruches 6 dadurch gelöst, daß der Kühlkanal zunächst mit einem Rundeisen, dessen Radius dem Radius des Profilelementes entspricht, abgedeckt wird, das Rundeisen beidseits des Kühlkanals mit dem Kern verschweißt wird, in den Spalt zwischen benachbarten Abschnitten des Rundeisens eine Schweißwerkstoffüllung eingebracht wird, der so gebildete Walzenrohling einer spanabhebenden Bearbeitung zum Herstellen des Querschnittprofils des Profilelementes unterzogen wird, durch Auftragsschweißen die Verschleißschicht aufgebracht wird und schließlich durch mechanisches Bearbeiten der Verschleißschicht eine glatten Walzenoberfläche hergestellt wird.The further object of the invention, to find an advantageous method for producing an internally cooled roller, which is designed according to one of
Gegenüber einer gattungsgemäßen Walze, bei der ein Band zum Abdecken des Kühlmittelkanals verwendet wird, hat das erfindungsgemäße Verfahren den herstellungstechnisch bedeutenden Vorteil, durch die Verwendung eines Rundeisens, d.h. eines dicken Drahtes, zum Abdecken des Kühlmittelkanales dem wendelförmigen Verlauf gut folgen zu können. Ein Verdrillen des Rundeisens, bedingt durch die Steigung der wendel, hat keinen Einfluß auf die Fertigung. So wird die Abplattung des Rundeisens zur Herstellung des endgültigen Querschnittes des Profilelementes auch erst dann hergestellt, wenn der Walzenrohling nach Einbringen der Schweißwerkstoffüllung zwischen die Rundeisen fertig ist.Compared to a generic roller, in which a belt is used to cover the coolant channel, the method according to the invention has the advantage in terms of production technology that it can follow the helical course well by using a round bar, ie a thick wire, to cover the coolant channel. A twisting of the round iron, due to the slope of the helix, has no influence on the production. Thus, the flattening of the round bar to produce the final cross section of the profile element is only produced when the roller blank is finished after the welding material filling has been inserted between the round bars.
Dabei wird, um unnötigen Materialaufwand und unnötige Schweißarbeit zu vermeiden, die Schweißwerkstoffüllung nicht bis zur Oberkante des Spaltes eingebracht, sondern nur gut soweit, wie später abgedreht werden soll.In order to avoid unnecessary material expenditure and unnecessary welding work, the filler material is not introduced up to the upper edge of the gap, but only as far as is to be turned later.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der beigefügten Figuren beschrieben. Es zeigt
- Fig. 1
- eine innengekühlte Walze teilweise im Schnitt
- Fig. 2
- einen Ausschnitt A aus Fig. 1 in vergrößerter Darstellung.
- Fig. 1
- an internally cooled roller partly in section
- Fig. 2
- a section A of FIG. 1 in an enlarged view.
Die in Fig. 1 dargestellte innengekühlte Walze hat einen Kern 1 mit einem in seiner Oberfläche eingelassenen wendelförmig verlaufenden Kühlmittelkanal 2 und einem weiteren, wendelförmig verlaufenden Kühlmittelkanal 2′, die zusammen eine zweigängige Wendel bilden. Die Kühlmittelkanäle 2, 2′ sind über radial gerichtete Bohrungen 3, 3′ mit einem ersten axialgerichteten Zentralkanal 4 für die Kühlmittelzufuhr verbunden.The internally cooled roller shown in Fig. 1 has a
Im nicht geschnitten gezeichneten Teil der Walze liegende, nicht sichtbare weitere radiale Bohrungen verbinden die Kühlmittelkanäle 2, 2′ schließlich mit einem zweiten axialgerichteten Zentralkanal 5. Die Zentralkanäle 4 und 5 liegen in einem Lagerzapfen 6 der Walze.In the not shown section of the roller lying, not visible further radial holes connect the
Die Kühlmittelkanäle 2, 2′ sind jeweils über ein Profilelement 7, 7′ abgedeckt, wobei das Profilelement 7, 7′ im Querschnitt gesehen die Form einer Kreisfläche, von der ein Segment abgeschnitten ist, hat.The
Zwischen benachbarten Abschnitten der Profilelemente 7, 7′ ist eine Schweißwerkstoffüllung 8 vorgesehen.Between adjacent sections of the
Die Profilelemente 7, 7′ und die Schweißwerkstoffüllung 8 sind mit einer Verschleißschicht 9 überzogen, die den Außenmantel der Walze bildet.The
Strömungspfeile 10 und 11 sollen den Kühlmittelkreislauf andeuten. Das Kühlmittel fließt über dem ersten axialgerichteten Zentralkanal 4 ein, verteilt sich über die beiden radialgerichteten Bohrungen 3, 3′ auf die beiden Kühlmittelkanäle 2, 2′, gelangt zurück in den Zentralbereich des Kerns 1 und tritt schließlich über den zweiten axialen Zentralkanal 5 wieder aus. Ein ringzylindrischer Dichtungsstopfen 12 trennt den Ein- und Auslaßbereich im Kühlmittelkreislauf.
Fig. 2 zeigt in vergrößertem Maßstab den strichpunktiert umrissenen Ausschnitt A aus Fig. 1.FIG. 2 shows, on an enlarged scale, the section A from FIG. 1 outlined in dash-dot lines.
Der zwischen benachbarten Abschnitten der Kühlmittelkanäle 2, 2′ verbleibende Teil des Kernes 1 bildet Stege 13, mit denen die Schweißwerkstoffüllung 8, ebenso wie mit den Profilelementen 7, 7′ durch Schweißung verbunden ist.The remaining part of the
Aus Fig. 2 ist auch zu ersehen, daß die Tiefe a des Kühlmittelkanals 2 größer ist als seine Breite b und daß die Breite c des Steges 13 zwischen benachbarten Abschnitten der Kühlmittelkanäle 2, 2′ größer ist als die Breite b des Kühlmittelkanals 2.From Fig. 2 it can also be seen that the depth a of the
Im Kreisflächenteil hat das Profilelement 7 einen Radius r, der größer ist als die halbe Breite b des Kühlmittelkanals 2.In the circular area part, the
Das Profilelement 7 und entsprechend das benachbarte Profilelement 7′ ist so angeordnet, daß seine - in Achsrichtung betrachtet - gerade Außenfläche 14 parallel zum Mantel des Kernes 1 liegt.The
Die radiale Dicke d des Profilelements 7 entspricht etwa dem o,7fachen seiner Breite e.The radial thickness d of the
Für eine innengekühlte Walze mit etwa 320 mm Außendurchmesser können folgende Maße gewählt werden:
a = 25 mm
b = 16 mm
c = 24 mm
d = 16 mm
e = 2 r = 21 mmThe following dimensions can be selected for an internally cooled roller with an outer diameter of approximately 320 mm:
a = 25 mm
b = 16 mm
c = 24 mm
d = 16 mm
e = 2 r = 21 mm
Bei der Herstellung einer innengekühlten Walze gemäß Fig. 1 werden zunächst die Kühlmittelkanäle 2, 2′ in den Kern 1 eingeschnitten und die Bohrungen 3, 3′, sowie entsprechende Kühlmittelrückführungsbohrungen hergestellt. Nun werden die beiden Kühlmittelkanäle 2, 2′ mit entsprechenden Rundeisen abgedeckt und die Rundeisen jeweils beidseits mit dem dazwischen liegenden Steg 13 über Kehlnähte verschweißt. Während die Rundeisen der Steigung der beiden Wendel folgen verdrillen sie sich etwas; doch hat dieses Verdrillen auf den Kreisquerschnitt der Rundeisen keine Wirkung.1, the
Nun werden die Spalte zwischen benachbarten Abschnitten des Rundeisens mit einer Schweißwerkstoffüllung weitgehend gefüllt.Now the gaps between adjacent sections of the round bar are largely filled with a filler material.
Der so gebildete Walzrohling wird einer spanabhebenden Bearbeitung unterzogen wobei vom Kreisquerschnitt der Rundeisen das äussere Segment abgenommen wird, wodurch schließlich das endgültige Profil der Profilelemente entsteht. Dabei wird auch ein Teil der Schweißwerkstoffüllung wieder abgetragen, und es liegt schließlich eine glatte Außenfläche vor, auf die die Verschleißschicht durch ggf. mehrlagiges Auftragsschweißen aufgebracht wird.The rolled blank thus formed is subjected to machining, the outer segment being removed from the circular cross section of the round bars, which ultimately creates the final profile of the profile elements. Part of the welding material fill is removed again, and finally there is a smooth outer surface to which the wear layer is applied by possibly multi-layer deposition welding.
In einer spanabhebenden Endbearbeitung kann dann ein glatter Außenmantel der innengekühlten Walze erzeugt werden.A smooth outer jacket of the internally cooled roller can then be produced in a machining finish.
Claims (6)
- An internally cooled roll comprising: a core (1) having at least one helically extending coolant channel (2, 2') which is let into its surface and connected via radially directed bores (3) to axially directed central ducts (4, 5) for coolant supply and discharge; and a cover layer (7, 8) which is made up from a sectional element (7) covering the coolant duct (2, 2') and welded to the core, and a welding filler material with which the gap between adjacent lateral surfaces of the sectional element (7) is filled, characterized by the combination of the following features:
the depth (a) of the coolant duct (2) is greater than-its width (b);
the sectional element (7), viewed in cross-section, has the shape of a circular surface from which a segment is cut off;
the sectional element (7) has in the circular surface portion a radius (r) which is greater than half the width (b) of the coolant duct (2) and is so disposed that its outer surface (14), which is straight viewed in the axial direction, lies parallel with the generated surface of the core (1);
the sectional element (7) and the welding filler material (8) are coated with an anti-wear layer (9) which forms the outer generated surface of the roll. - An internally cooled roll according to claim 1, characterized in that the radius (r) of the sectional element (7) is 20 to 40% greater than half the width (b) of the coolant duct (2).
- An internally cooled roll according to one of claims 1 or 2, characterized in that a number of coolant ducts, (2, 2') of identical width (b) are provided and form a multi-start helix.
- An internally cooled roll according to one of claims 1 to 3, characterized in that the viewed in the axial direction, the width (c) of the web (13) of the core (1) separating adjacent portions of the or each coolant duct (2: 2') is 10 to 40% larger than the width (b) of the coolant duct or ducts (2, 2').
- An internally cooled roll according to one of claims 1 to 4, characterized in that the radial thickness (d) of the sectional element (7) is approximately 0.5 to 0.75 times its width (e).
- A process of manufacturing an internally cooled roll designed according to one of claims 1 to 5, characterized in that
the coolant duct (2, 2') is covered with a rod iron whose radius corresponds to the radius (r) of the sectional element (7);
the rod iron is welded to the core (1) on both sides of the coolant duct (2, 2');
a welding filler material (8) is introduced into the gap between adjoining portions of the rod iron;
the resulting roll blank is subjected to machining to produce the cross-sectional profile of the sectional element;
the anti-wear layer (9) is applied by weld surfacing;
and finally the anti-wear layer (9) is machined to produce a smooth roll surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88114237T ATE72153T1 (en) | 1987-10-23 | 1988-09-01 | INTERNALLY-COOLED ROLLER AND METHOD OF PRODUCTION. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3735884 | 1987-10-23 | ||
| DE3735884A DE3735884C1 (en) | 1987-10-23 | 1987-10-23 | Internally cooled roller and process for its manufacture |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0312744A2 EP0312744A2 (en) | 1989-04-26 |
| EP0312744A3 EP0312744A3 (en) | 1989-12-06 |
| EP0312744B1 true EP0312744B1 (en) | 1992-01-29 |
Family
ID=6338921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88114237A Expired - Lifetime EP0312744B1 (en) | 1987-10-23 | 1988-09-01 | Internally cooled roll and method for manufacturing the same |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0312744B1 (en) |
| AT (1) | ATE72153T1 (en) |
| DE (1) | DE3735884C1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT396759B (en) * | 1990-06-18 | 1993-11-25 | Hirn Franz | Internally cooled roller or roll for transporting hot objects |
| DE4220692C1 (en) * | 1991-10-21 | 1993-03-11 | Mannesmann Ag, 4000 Duesseldorf, De | Work or back=up roll for continuous combined casting and steel rolling - comprises steel base body, low m.pt. alloy thin interlayer and wear resistant top layer applied by inert gas atomisation of molten stream |
| AT506674B9 (en) | 2008-04-22 | 2010-10-15 | Siemens Vai Metals Tech Gmbh | ROLE FOR SUPPORTING AND TRANSPORTING HOT GOOD, METHOD FOR PRODUCING THE ROLE, METHOD FOR RECONSTRUCTING A PROTECTED ROLE, WELDING ADDITIVE MATERIAL AND WELDING WIRE FOR PRODUCING ORDER WELDING |
| CN111702013B (en) * | 2020-06-24 | 2022-02-11 | 瓯锟科技温州有限公司 | Cold rolling composite set for metal clad sheet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3231433C2 (en) * | 1982-08-20 | 1985-07-11 | Mannesmann AG, 4000 Düsseldorf | Internally cooled support and / or transport roller and process for their production |
| DE3326746A1 (en) * | 1983-07-25 | 1985-02-14 | Wiegard, Gustav, 5810 Witten | Water-cooled roller for continuous casting plants |
| JPS6133747A (en) * | 1984-07-27 | 1986-02-17 | Kawasaki Steel Corp | Roll for continuous casting machine |
-
1987
- 1987-10-23 DE DE3735884A patent/DE3735884C1/en not_active Expired
-
1988
- 1988-09-01 AT AT88114237T patent/ATE72153T1/en not_active IP Right Cessation
- 1988-09-01 EP EP88114237A patent/EP0312744B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0312744A2 (en) | 1989-04-26 |
| DE3735884C1 (en) | 1989-02-09 |
| ATE72153T1 (en) | 1992-02-15 |
| EP0312744A3 (en) | 1989-12-06 |
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