EP0471218B1 - Roller for roller hearth furnace - Google Patents
Roller for roller hearth furnace Download PDFInfo
- Publication number
- EP0471218B1 EP0471218B1 EP91112406A EP91112406A EP0471218B1 EP 0471218 B1 EP0471218 B1 EP 0471218B1 EP 91112406 A EP91112406 A EP 91112406A EP 91112406 A EP91112406 A EP 91112406A EP 0471218 B1 EP0471218 B1 EP 0471218B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- fibre
- spraying composition
- mat
- support rings
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 71
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005524 ceramic coating Methods 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- 229920000126 latex Polymers 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 9
- 239000007767 bonding agent Substances 0.000 claims 4
- 239000007921 spray Substances 0.000 abstract description 23
- 239000011230 binding agent Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 description 24
- 238000000465 moulding Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000004413 injection moulding compound Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
- F27D1/0009—Comprising ceramic fibre elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/14—Supports for linings
- F27D1/144—Supports for ceramic fibre materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/02—Skids or tracks for heavy objects
- F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
Definitions
- the invention relates to a roller for a roller furnace, in particular for the heat treatment of slabs, the roller having supporting rings at intervals and thermal insulation being arranged between the supporting rings.
- the slabs rest on the support rings and are transported through the roller furnace by means of the rollers for heat treatment.
- the interior of the roll is usually water-cooled.
- the thermal insulation is intended to protect the roll against the hot slab.
- DE 32 31 736 C2 is a jacket for the insulation of a cooled sliding, support or cross tube in an oven described.
- molded bodies on the underside of a ceramic fiber material and molded bodies on the upper side of the tube made of a high-strength ceramic are provided. This structure is unsuitable for rotating rollers. Preformed insulation bodies result in joints in the thermal insulation of the roll. Such joints would affect the effectiveness of the heat insulation.
- Moldings for insulating pipes are also described in DE 31 25 440 A1 and DE 36 09 047 A1. Such moldings are unsuitable for rollers because they can hardly withstand the dynamic loads of a rotating roller and a joint formation can be expected.
- the object of the invention is to propose a role of the type mentioned, the thermal insulation is constructed so that it withstands the dynamic loads on the role and the thermal loads arising from the goods to be transported (slab).
- the above object is achieved in a roll of the type mentioned in that a needled first fiber mat is placed on the circumference of the roll between the support rings, that a fiber spray compound is sprayed onto the first fiber mat, which contains a binder that the fiber spray compound by means of Binder with the first Fiber mat is connected and that a pre-compressed second fiber mat is located laterally between the support rings and the fiber spray compound.
- the fiber molding compound has favorable thermal insulation properties.
- the slab transported on the support rings of the roll and the roll are largely decoupled from one another in terms of heat technology, so that neither the slab is cooled from the roll nor the roll is heated by the slab.
- the fiber spraying compound extends over the entire circumference and is seamless in itself, it is avoided that scale of the slab or alkali residues of continuous casting powders of the slab can damage the roll.
- the fiber spray compound is held securely on the roll, since the first fiber mat, by virtue of its bond with the fiber spray compound, stabilizes the hold of the fiber spray compound on the roll and is itself solidified by the binder of the fiber spray compound migrating into it.
- the fiber spray compound withstands the centrifugal forces which arise during the rotation of the roller and the forces which occur during the accelerations of the roller, without breaking out partially.
- the pre-compressed, second fiber mat permanently closes the itself between the fiber molding compound and the support rings existing or emerging joints. Even a shrinkage of the fiber spray compound does not lead to open joints between the latter and the support rings, since the pre-compressed fiber mat adapts to joints.
- metal tensioning bands are placed around the roller, to which retaining anchors for the fiber spray compound are attached. This further stabilizes the fiber spray compound on the roll.
- the tension band is preferably tightened to the roller by means of screws. This eliminates the need for welded connections between the roller and the holding anchors.
- a metallic roller (1) has several metallic support rings (2) distributed over its length.
- Each support ring (2) consists of two spaced flange ring parts (3), one between them used ring body (4) and a tread part (5) attached to this.
- Metallic straps (6) are placed around the roller (1) between two adjacent support rings (2). Each strap (6) has angled ends (7). These are braced against each other by means of a screw-nut connection (8) in such a way that the tensioning strap (6) is firmly attached to the roller (1).
- Each retaining anchor (9) consists of a retaining pin (10) which is welded to the tension band (6) and a flat clamping piece (11) which is locked on the retaining pin (10).
- a first needled, binder-free fiber mat (12) made of ceramic fibers (12) is placed between the support rings (2). Blanket). This pierces the retaining pins (10).
- Precompressed second fiber mats (13) made of ceramic fibers are placed on the side of the support rings (2).
- the fiber mat (13) is a fiber mat of low initial density, which is compressed from this initial density with a thickness of approximately 50 mm by moistening to a thickness of 10 mm.
- a fiber spray compound (14) made of ceramic fibers is sprayed on between the second fiber mats (13) and on the first fiber mat (12). It is suitable for this an injection molding compound that contains colloidal SiO2 as a binder. This fiber mass must then be dried in order to achieve its final strength.
- a fiber cement made of ceramic fibers with a hydraulically setting binder is also suitable as a fiber spray compound. This reaches its strength even at room temperature.
- the binder of the sprayed-on fiber spray compound (14) partially penetrates into the first fiber mat (12), so that on the one hand the first fiber mat (12) solidifies and on the other hand a bond is established between it and the fiber spray compound (14) so that the fiber spray compound ( 14) is held securely on the circumference of the roller (1).
- the clamping pieces (11) stabilize the fiber molding compound (14).
- the wall thickness of the fiber spray compound (14) is substantially greater, for example by a factor of 7 to 10, than that of the first fiber mat (12).
- the fiber spray compound (14) can be provided with a ceramic coating on its surface.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Tunnel Furnaces (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Nonwoven Fabrics (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Die Erfindung betrifft eine Rolle für einen Rollenofen, insbesondere zur Wärmebehandlung von Brammen, wobei die Rolle in Abständen Tragringe aufweist und zwischen den Tragringen eine Wärmedämmung angeordnet ist.The invention relates to a roller for a roller furnace, in particular for the heat treatment of slabs, the roller having supporting rings at intervals and thermal insulation being arranged between the supporting rings.
Bei Rollenöfen liegen die Brammen auf den Tragringen auf und werden mittels der Rollen zur Wärmebehandlung durch den Rollenofen transportiert. Der Rolleninnenraum ist gewöhnlich wassergekühlt. Die Wärmedämmung soll einerseits die Rolle gegenüber der heißen Bramme schützen. Andererseits soll sie ein Auskühlen der Bramme verhindern.In the case of roller furnaces, the slabs rest on the support rings and are transported through the roller furnace by means of the rollers for heat treatment. The interior of the roll is usually water-cooled. On the one hand, the thermal insulation is intended to protect the roll against the hot slab. On the other hand, it should prevent the slab from cooling down.
In der DE 32 31 736 C2 ist eine Ummantelung zur Isolierung eines gekühlten Gleit-, Trag- oder Querrohres in einem Ofen beschrieben. Um die Oberseite und die Unterseite des Rohres den jeweiligen Beanspruchungen anzupassen, sind rohrunterseitige Formkörper aus einem keramischem Fasermaterial und rohroberseitige Formkörper aus einer hochfesten Keramik vorgesehen. Für umlaufende Rollen ist dieser Aufbau ungeeignet. Durch vorgeformte Isolationskörper ergäben sich Fugen in der Wärmeisolierung der Rolle. Solche Fugen würden die Wirkung der Wärme-Isolierung beeinträchtigen.In DE 32 31 736 C2 is a jacket for the insulation of a cooled sliding, support or cross tube in an oven described. In order to adapt the top and bottom of the tube to the respective stresses, molded bodies on the underside of a ceramic fiber material and molded bodies on the upper side of the tube made of a high-strength ceramic are provided. This structure is unsuitable for rotating rollers. Preformed insulation bodies result in joints in the thermal insulation of the roll. Such joints would affect the effectiveness of the heat insulation.
Auch in der DE 31 25 440 A1 und in der DE 36 09 047 A1 sind Formkörper zur Dämmung von Rohren beschrieben. Für Rollen sind solche Formkörper ungeeignet, da sie kaum den dynamischen Belastungen einer drehenden Rolle standhalten und mit einer Fugenbildung zu rechnen ist.Moldings for insulating pipes are also described in DE 31 25 440 A1 and DE 36 09 047 A1. Such moldings are unsuitable for rollers because they can hardly withstand the dynamic loads of a rotating roller and a joint formation can be expected.
Aufgabe der Erfindung ist es, eine Rolle der eingangs genannten Art vorzuschlagen, deren Wärmedämmung so aufgebaut ist, daß sie den dynamischen Belastungen der Rolle und den durch das zu transportierende Gut (Bramme) entstehenden thermischen Belastungen standhält.The object of the invention is to propose a role of the type mentioned, the thermal insulation is constructed so that it withstands the dynamic loads on the role and the thermal loads arising from the goods to be transported (slab).
Erfindungsgemäß ist obige Aufgabe bei einer Rolle der eingangs genannten Art dadurch gelöst, daß auf den Umfang der Rolle zwischen den Tragringen eine vernadelte erste Fasermatte aufgelegt ist, daß auf die erste Fasermatte eine Faserspritzmasse aufgespritzt ist, die ein Bindemittel enthält, daß die Faserspritzmasse mittels des Bindemittels mit der ersten Fasermatte verbunden ist und daß seitlich zwischen den Tragringen und der Faserspritzmasse eine vorkomprimierte zweite Fasermatte liegt.According to the invention the above object is achieved in a roll of the type mentioned in that a needled first fiber mat is placed on the circumference of the roll between the support rings, that a fiber spray compound is sprayed onto the first fiber mat, which contains a binder that the fiber spray compound by means of Binder with the first Fiber mat is connected and that a pre-compressed second fiber mat is located laterally between the support rings and the fiber spray compound.
Die Faserspritzmasse weist günstige Wärmedämmeigenschaften auf, Dadurch sind die auf den Tragringen der Rolle transportierte Bramme und die Rolle wärmetechnisch weitgehend voneinander entkoppelt, so daß weder die Bramme von der Rolle abgekühlt noch die Rolle von der Bramme aufgeheizt wird.The fiber molding compound has favorable thermal insulation properties. As a result, the slab transported on the support rings of the roll and the roll are largely decoupled from one another in terms of heat technology, so that neither the slab is cooled from the roll nor the roll is heated by the slab.
Da die Faserspritzmasse sich über den gesamten Umfang erstreckt und in sich fugenlos ist, ist vermieden, daß Zunder der Bramme oder Alkalirückstände von Stranggußpulvern der Bramme die Rolle schädigen können.Since the fiber spraying compound extends over the entire circumference and is seamless in itself, it is avoided that scale of the slab or alkali residues of continuous casting powders of the slab can damage the roll.
Die Faserspritzmasse ist an der Rolle sicher gehalten, da die erste Fasermatte durch ihre Bindung mit der Faserspritzmasse den Halt der Faserspritzmasse an der Rolle stabilisiert und selbst durch das in sie einwandernde Bindemittel der Faserspritzmasse verfestigt ist. Die Faserspritzmasse hält dadurch den Fliehkräften, die bei der Rotation der Rolle entstehen, und den bei den Beschleunigungen der Rolle auftretenden Kräften stand, ohne partiell auszubrechen.The fiber spray compound is held securely on the roll, since the first fiber mat, by virtue of its bond with the fiber spray compound, stabilizes the hold of the fiber spray compound on the roll and is itself solidified by the binder of the fiber spray compound migrating into it. The fiber spray compound withstands the centrifugal forces which arise during the rotation of the roller and the forces which occur during the accelerations of the roller, without breaking out partially.
Die vorkomprimierte, zweite Fasermatte schließt dauerhaft die an sich zwischen der Faserspritzmasse und den Tragringen bestehenden bzw. entstehenden Fugen. Auch ein Schwinden der Faserspritzmasse führt nicht zu offenen Fugen zwischen dieser und den Tragringen, da sich die vorkomprimierte Fasermatte Fugen anpaßt.The pre-compressed, second fiber mat permanently closes the itself between the fiber molding compound and the support rings existing or emerging joints. Even a shrinkage of the fiber spray compound does not lead to open joints between the latter and the support rings, since the pre-compressed fiber mat adapts to joints.
In bevorzugter Ausgestaltung der Erfindung sind um die Rolle metallische Spannbänder gelegt, an denen Halteanker für die Faserspritzmasse befestigt sind. Dadurch ist eine weitere Stabilisierung der Faserspritzmasse an der Rolle erreicht.In a preferred embodiment of the invention, metal tensioning bands are placed around the roller, to which retaining anchors for the fiber spray compound are attached. This further stabilizes the fiber spray compound on the roll.
Vorzugsweise ist das Spannband mittels Schrauben an der Rolle festgezogen. Es erübrigen sich damit Schweißverbindungen zwischen der Rolle und den Halteankern.The tension band is preferably tightened to the roller by means of screws. This eliminates the need for welded connections between the roller and the holding anchors.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung eines Ausführungsbeispiels. In der Zeichnung zeigen:
- Figur 1
- einen Querschnitt längs der Linie I-I nach Figur 2 und
- Figur 2
- einen Längsschnitt längs der Linie II-II nach Figur 1 in Teilansicht.
- Figure 1
- a cross section along the line II of Figure 2 and
- Figure 2
- a longitudinal section along the line II-II of Figure 1 in partial view.
Eine metallische Rolle (1) weist auf ihre Länge verteilt mehrere metallische Tragringe (2) auf. Jeder Tragring (2) besteht aus zwei beabstandeten Flanschringteilen (3), einem zwischen diese eingesetzten Ringkörper (4) und einem auf diesem befestigten Laufflächenteil (5).A metallic roller (1) has several metallic support rings (2) distributed over its length. Each support ring (2) consists of two spaced flange ring parts (3), one between them used ring body (4) and a tread part (5) attached to this.
Zwischen zwei benachbarten Tragringen (2) sind um die Rolle (1) metallische Spannbänder (6) gelegt. Jedes Spannband (6) weist abgewinkelte Enden (7) auf. Diese sind mittels einer Schrauben-Mutterverbindung (8) so gegeneinander verspannt, daß das Spannband (6) an der Rolle (1) festsitzt.Metallic straps (6) are placed around the roller (1) between two adjacent support rings (2). Each strap (6) has angled ends (7). These are braced against each other by means of a screw-nut connection (8) in such a way that the tensioning strap (6) is firmly attached to the roller (1).
An das Spannband (6) sind an seinem Umfang mehrere, beispielsweise acht, Halteanker (9) angeschweißt, von denen in Figur 1 nur zwei dargestellt sind. Jeder Halteanker (9) besteht aus einem Haltestift (10), der an das Spannband (6) angeschweißt ist und einem auf dem Haltestift (10) verrasteten flächigen Klemmstück (11).Several, for example eight, holding anchors (9) are welded to the tension band (6) on its circumference, only two of which are shown in FIG. 1. Each retaining anchor (9) consists of a retaining pin (10) which is welded to the tension band (6) and a flat clamping piece (11) which is locked on the retaining pin (10).
Nach dem Befestigen der Spannbänder (6) an der Rolle (1), vor dem Aufsetzen der Klemmstücke (11), ist um die Rolle (1) zwischen den Tragringen (2) eine erste vernadelte, binderfreie Fasermatte (12) aus keramischen Fasern (Blanket) gelegt. Diese durchsticht dabei die Haltestifte (10).After the tensioning straps (6) have been fastened to the roller (1), before the clamping pieces (11) are placed, a first needled, binder-free fiber mat (12) made of ceramic fibers (12) is placed between the support rings (2). Blanket). This pierces the retaining pins (10).
Seitlich an die Tragringe (2) sind vorkomprimierte zweite Fasermatten (13) aus keramischen Fasern gelegt. Die Fasermatte (13) ist eine Fasermatte geringer Ausgangsdichte, die von dieser Ausgangsdichte mit einer Dicke von etwa 50 mm durch Anfeuchten auf eine Dicke von 10 mm komprimiert ist.Precompressed second fiber mats (13) made of ceramic fibers are placed on the side of the support rings (2). The fiber mat (13) is a fiber mat of low initial density, which is compressed from this initial density with a thickness of approximately 50 mm by moistening to a thickness of 10 mm.
Nach dem Aufsetzen der flächigen Klemmstücke (11) auf die Haltestifte (10) wird zwischen die zweiten Fasermatten (13) und auf die erste Fasermatte (12) eine Faserspritzmasse (14) aus keramischen Fasern aufgespritzt. Es eignet sich hierfür eine Faserspritzmasse, die kolloidales SiO₂ als Bindemittel enthält. Diese Fasermasse muß dann getrocknet werden, um ihre Endfestigkeit zu erreichen. Es eignet sich als Faserspritzmasse auch ein Faserzement aus keramischen Fasern mit einem hydraulisch abbindenden Bindemittel. Dieser erreicht seine Festigkeit auch bei Raumtemperatur.After the flat clamping pieces (11) have been placed on the holding pins (10), a fiber spray compound (14) made of ceramic fibers is sprayed on between the second fiber mats (13) and on the first fiber mat (12). It is suitable for this an injection molding compound that contains colloidal SiO₂ as a binder. This fiber mass must then be dried in order to achieve its final strength. A fiber cement made of ceramic fibers with a hydraulically setting binder is also suitable as a fiber spray compound. This reaches its strength even at room temperature.
Das Bindemittel der aufgespritzten Faserspritzmasse (14) dringt teilweise in die erste Fasermatte (12) ein, so daß sich einerseits die erste Fasermatte (12) verfestigt und sich andererseits eine Bindung zwischen dieser und der Faserspritzmasse (14) einstellt, so daß die Faserspritzmasse (14) sicher am Umfang der Rolle (1) gehalten ist. Darüber hinaus stabilisieren die Klemmstücke (11) die Faserspritzmasse (14).The binder of the sprayed-on fiber spray compound (14) partially penetrates into the first fiber mat (12), so that on the one hand the first fiber mat (12) solidifies and on the other hand a bond is established between it and the fiber spray compound (14) so that the fiber spray compound ( 14) is held securely on the circumference of the roller (1). In addition, the clamping pieces (11) stabilize the fiber molding compound (14).
Die Wanddicke der Faserspritzmasse (14) ist wesentlich, beispielsweise um den Faktor 7 bis 10, größer als die der ersten Fasermatte (12).The wall thickness of the fiber spray compound (14) is substantially greater, for example by a factor of 7 to 10, than that of the first fiber mat (12).
In Längsrichtung der Rolle (1) erfolgende Schwindungen der Faserspritzmasse (14) werden durch die vorkomprimierten zweiten Fasermatten (13) ausgeglichen. Insgesamt entsteht eine riß- und fugenfreie Wärmedämmung der Rolle (1), wobei die Faserspritzmasse (14) auch Erschütterungen und Vibrationen, die beim Transport von Brammen über die Tragringe (2) stattfinden und den dabei auftretenden Fliehkräften standhält.Shrinkage of the fiber spray compound (14) in the longitudinal direction of the roll (1) is compensated for by the pre-compressed second fiber mats (13). Overall, there is crack and joint-free thermal insulation of the roll (1), the fiber spray compound (14) also shocks and vibrations when transporting slabs over the support rings (2) and withstand the centrifugal forces that occur.
Im Bedarfsfall kann die Faserspritzmasse (14) an ihrer Oberfläche mit einer keramischen Beschichtung versehen sein.If necessary, the fiber spray compound (14) can be provided with a ceramic coating on its surface.
Zwischen den Flanschringteilen (3) jedes Tragrings (2) besteht ein Ringraum. In diesem sind vor dem Zusammensetzen der Flanschringteile (3) auf der Rolle (1) Schichten aus keramischem Faservlies (15) mit Latexbindung eingesetzt. Dadurch ist eine zusätzliche Wärmeisolation zwischen dem Ringkörper (4) bzw. des Laufflächenteils (5) und der Rolle (1) erreicht.There is an annular space between the flange ring parts (3) of each support ring (2). Before the flange ring parts (3) are put together on the roll (1), layers of ceramic fiber fleece (15) with a latex bond are used. This provides additional thermal insulation between the ring body (4) or the tread part (5) and the roller (1).
Claims (11)
- Roller for a roller hearth furnace, particularly for heat treating slabs, whereby the roller has spaced support rings and thermal insulation is arranged between the support rings, characterised in that a needled first fibre mat (12) is placed on the periphery of the roller (1) between the support rings (2), that a fibre spraying composition (14), which includes a bonding agent, is sprayed onto the first fibre mat (12), that the fibre spraying composition (14) is connected to the first fibre mat (12) by means of the bonding agent and that disposed laterally between the support rings (2) and the fibre spraying composition (14) there is a precompressed second fibre mat (13).
- Roller as claimed in Claim 1, characterised in that placed around the roller (1) are metallic tension straps (6) to which fastening anchors (9) for the fibre spraying composition (14) are secured.
- Roller as claimed in Claim 2, characterised in that the fastening anchors (9) are constituted by fastening pegs (10) secured to the tension strap (6) and large area retaining members (11) attachable to them.
- Roller as claimed in Claim 2 or 3, characterised in that the tension band strap (6) is tightened onto the roller (1) by means of a screw-nut connection (8).
- Roller as claimed in one of the preceding Claims 3 or 4, characterised in that the first fibre mat (12) is pushed over the fastening pegs (10).
- Roller as claimed in one of the preceding claims, characterised in that the wall thickness of the first fibre mat (12) is smaller than that of the fibre spraying composition (14).
- Roller as claimed in one of the preceding claims, characterised in that the second fibre mat (13) is compressed by a factor of about 5 and is disposed between the support ring (2) and the fibre spraying composition (14).
- Roller as claimed in one of the preceding claims, characterised in that the fibre spraying composition (14) comprises ceramic fibres with a colloidal SiO₂ as a bonding agent.
- Roller as claimed in one of the preceding Claims 1 to 7, characterised in that the fibre spraying composition (14) comprises ceramic fibres with a hydraulic bonding agent.
- Roller as claimed in one of the preceding claims, characterised in that defined within the support ring (2) there is an annular space into which a ceramic fibre fleece (15) with a latex bonder is inserted.
- Roller as claimed in one of the preceding claims, characterised in that the fibre spraying composition (14) is provided on its surface with a ceramic coating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4025935 | 1990-08-16 | ||
| DE4025935A DE4025935A1 (en) | 1990-08-16 | 1990-08-16 | ROLE FOR A ROLLER OVEN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0471218A1 EP0471218A1 (en) | 1992-02-19 |
| EP0471218B1 true EP0471218B1 (en) | 1994-05-18 |
Family
ID=6412344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91112406A Expired - Lifetime EP0471218B1 (en) | 1990-08-16 | 1991-07-24 | Roller for roller hearth furnace |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5143684A (en) |
| EP (1) | EP0471218B1 (en) |
| AT (1) | ATE105929T1 (en) |
| DE (2) | DE4025935A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4141250C2 (en) * | 1991-12-14 | 1993-10-14 | Loi Ind Ofenanlagen | Roll for roller hearth furnaces and process for their manufacture |
| US5230618A (en) * | 1992-02-24 | 1993-07-27 | Bricmanage, Inc. | Insulated furnace roller |
| US5362230A (en) * | 1993-03-24 | 1994-11-08 | Italimpianti Of America, Inc. | Rolls for high temperature roller hearth furnaces |
| FR2707272B1 (en) * | 1993-07-09 | 1995-09-15 | Stein Heurtey | Improvements brought to the cooled rollers for the handling of products in particular metallurgical and iron and steel. |
| US5918719A (en) * | 1996-12-27 | 1999-07-06 | Kubota Corporation | Tire roller for transporting slabs |
| US5891516A (en) * | 1998-06-12 | 1999-04-06 | Weavexx Corporation | Fabric for forming fiber cement articles |
| DE19923114C2 (en) * | 1999-05-19 | 2001-12-13 | Johannes Stark | Roll for a heat treatment furnace |
| DE10012940A1 (en) * | 2000-03-16 | 2001-09-20 | Loi Thermprocess Gmbh | Disc roller for roller hearth furnace includes circumferentially-spaced rounded elevations in its supporting sections, which engage carrier ring depressions |
| US20050085148A1 (en) * | 2003-10-17 | 2005-04-21 | Thomas Baumgartner | Felt for forming fiber cement articles with multiplex base fabric |
| US20060068665A1 (en) * | 2004-09-29 | 2006-03-30 | Heinz Pernegger | Seamed felt for forming fiber cement articles and related methods |
| US20130008552A1 (en) | 2011-07-06 | 2013-01-10 | Hans Peter Breuer | Felt for forming fiber cement articles and related methods |
| DE102017208710A1 (en) | 2016-09-27 | 2018-03-29 | Sms Group Gmbh | Coolable furnace roll and method of operating such |
| CN111811282A (en) * | 2020-07-01 | 2020-10-23 | 武汉钢铁有限公司 | Heat insulation protective layer structure of water-cooling furnace roller and preparation method thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1929891A1 (en) * | 1969-06-12 | 1971-02-18 | Plibrico Co Gmbh | Refractory jacket for the ingot support - tubes in pusher or rocker-bar furnaces |
| US3995665A (en) * | 1974-05-28 | 1976-12-07 | The Carborundum Company | Thermal insulation element |
| DE2940320C2 (en) * | 1979-10-04 | 1981-12-03 | Bloom Engineering (Europa) GmbH, 4000 Düsseldorf | Fireproof insulation made of molded insulating bodies for ovens |
| US4330912A (en) * | 1980-06-18 | 1982-05-25 | Crucible Inc. | Furnace roll |
| DE3201417C2 (en) * | 1981-01-22 | 1986-01-16 | Nippon Steel Corp., Tokio/Tokyo | Solid metal roller for transporting hot material |
| DE3125440A1 (en) * | 1981-06-27 | 1983-01-20 | Promat Gesellschaft für moderne Werkstoffe mbH, 4000 Düsseldorf | THERMAL INSULATING SHEATHING FOR LONG STRETCHED CONSTRUCTION PARTS |
| DE3231736C2 (en) * | 1982-08-26 | 1985-03-28 | Didier-Werke Ag, 6200 Wiesbaden | Sheathing for the insulation of a cooled sliding, support or cross pipe in a furnace |
| JPS60145317A (en) * | 1983-12-30 | 1985-07-31 | Nippon Steel Corp | Structure of horizontal skid beam pipe for heating furnace |
| JPS60152615A (en) * | 1984-01-23 | 1985-08-10 | Chugai Ro Kogyo Kaisha Ltd | Supporting member in industrial furnace |
| DE3609047A1 (en) * | 1985-03-29 | 1987-01-29 | Bloom Eng Europa Gmbh | Refractory casing for pipes in preheating furnaces |
| US4848055A (en) * | 1988-05-09 | 1989-07-18 | A. P. Green Industries, Inc. | Center mounted insulating module for a furnace |
| FR2632286B1 (en) * | 1988-06-02 | 1992-06-12 | Stein Heurtey | ROLLER FOR HANDLING STEEL PRODUCTS MOVING INSIDE AN OVEN |
-
1990
- 1990-08-16 DE DE4025935A patent/DE4025935A1/en not_active Withdrawn
-
1991
- 1991-05-15 US US07/700,459 patent/US5143684A/en not_active Expired - Fee Related
- 1991-07-24 EP EP91112406A patent/EP0471218B1/en not_active Expired - Lifetime
- 1991-07-24 AT AT91112406T patent/ATE105929T1/en not_active IP Right Cessation
- 1991-07-24 DE DE59101656T patent/DE59101656D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4025935A1 (en) | 1992-02-20 |
| DE59101656D1 (en) | 1994-06-23 |
| US5143684A (en) | 1992-09-01 |
| ATE105929T1 (en) | 1994-06-15 |
| EP0471218A1 (en) | 1992-02-19 |
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