EP1840261A1 - Method for manufacturing a cylinder - Google Patents
Method for manufacturing a cylinder Download PDFInfo
- Publication number
- EP1840261A1 EP1840261A1 EP07013737A EP07013737A EP1840261A1 EP 1840261 A1 EP1840261 A1 EP 1840261A1 EP 07013737 A EP07013737 A EP 07013737A EP 07013737 A EP07013737 A EP 07013737A EP 1840261 A1 EP1840261 A1 EP 1840261A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- welding layer
- layer
- hardness
- base tube
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims description 31
- 238000003466 welding Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 8
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 235000019589 hardness Nutrition 0.000 description 15
- 230000035882 stress Effects 0.000 description 6
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0246—Hard rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
Definitions
- the invention relates to a heatable roller with a smooth, hard surface for the production and / or treatment of a fibrous web, in particular paper, board or tissue web. It further relates to a process for producing such a roll.
- KSTV chrome casting
- the invention has for its object to provide an improved roller and an improved method of the type mentioned, in which the aforementioned problems are eliminated.
- the roller comprises a base tube made of weldable steel, to which at least one welding layer is applied, which has a greater hardness than the base tube.
- the base tube of the roller can thus be made of a relatively simple weldable steel, while over one or more hard welding layers are applied.
- the welding layer consists of a metal alloy which can be welded to the base tube.
- all metal alloys come into question, which are welded to the base tube.
- the welding layer is spirally applied to the base tube.
- the layer can be welded in a spiral manner when the base tube rotates.
- the roll preferably has a surface hardness of Vickers ⁇ 450 HV.
- surface hardnesses are above a value of about 450 HV without problems reachable.
- Conventional chill rolls have hardnesses of about 530 HV.
- curing up to, for example, about 800 HV is conceivable without further ado.
- this has a surface hardness according to Vickers> 530 HV.
- it has a surface hardness of Vickers ⁇ 600, in particular ⁇ 700, in particular ⁇ 750 and preferably of about 800 HV.
- the surface hardness according to Vickers can therefore in particular be in a range of about 450 to about 800 HV and preferably in a range of about 530 to about 800 HV.
- the welding layer may be formed by one or by a plurality of welding layers.
- the thickness of a respective welding layer is preferably about 3 mm.
- the total thickness of the welding layer after the finishing of the surface is advantageously in a range from about 1 to about 20 mm, preferably in a range from about 3 to about 10 mm.
- the layer or metal alloy to be welded has relatively freely determinable constituents, the physical and chemical properties of the layer or the various layers of this layer can be variably adjusted.
- the hardness of the welding layer, starting from the base tube increases radially outward, as a result of which internal stresses are correspondingly reduced.
- the heatable roll may in particular be a rotating hollow roll with flanged mounted journals.
- the roller is provided with peripheral, preferably parallel to the roll axis extending heating channels or holes.
- a preferred wall thickness of the heatable roll is in a range of about 100 to about 200 mm.
- the base tube of the heatable roller may in particular consist of a forged tube, a seamlessly drawn tube or a turned round steel.
- a base tube made of simple steel, which can be drilled very easily, can be used for the heatable rolls of generally relatively thick wall thickness in question here.
- the residual stresses can be significantly reduced.
- the roller is heated to temperatures in the range of 100 ° to 250 ° C, the sum of residual stresses and external stresses is reduced to a manageable level.
- a constant hardness layer thickness can be achieved according to the invention, which brings about a significantly better dimensional stability and a better dynamic running behavior of the roll.
- Another decisive advantage of the heatable roller according to the invention is that it offers improved repair options.
- the respective repair can be carried out by renewed build-up welding.
- the object stated above according to the invention is achieved accordingly by applying to a base tube made of weldable steel at least one welding layer which has a greater hardness than the base tube.
- the welding of the welding layer is expediently carried out under powder or under protective gas and by a material addition in the form of at least one band or wire.
- the welding layer can advantageously be applied spirally when the base body rotates.
- the invention moreover relates generally to a process for producing a roll for use in papermaking, which is thus applicable not only for the production of heating rolls but also for the production of other rolls serving for the papermaking or treatment.
- this method is characterized in that at least one welding layer is applied to a base tube made of weldable steel and that the final material properties of the coating after the welding application are set by a corresponding heat treatment.
- the heat treatment may in particular comprise an annealing treatment.
- the material properties which can be set via the subsequent heat treatment include the toughness, the microstructure, the dimensional stability, the residual stress, the hardness and / or the like.
- a heatable roller made of a steel base tube with a hard hardfacing layer can also be produced again.
- the desired material properties, here, for example, the hardness, can be adjusted by the subsequent heat treatment in the desired manner.
- At least one welding layer is applied to the base tube made of weldable steel, which has a greater hardness than the base tube.
- the welding layer is preferably provided in conjunction with a tungsten carbide layer.
- this is preferably defined by a roughness value Ra in a range from about 0.01 to about 0.2 ⁇ m.
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Paper (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
Die Erfindung betrifft eine beheizbare Walze mit einer glatten, harten Oberfläche zur Herstellung und/oder Behandlung einer Faserstoffbahn, insbesondere Papier-, Karton- oder Tissuebahn. Sie betrifft ferner ein Verfahren zur Herstellung einer solchen Walze.The invention relates to a heatable roller with a smooth, hard surface for the production and / or treatment of a fibrous web, in particular paper, board or tissue web. It further relates to a process for producing such a roll.
Bisher werden als beheizbare Walzen mit einer besonders glatten, harten Oberfläche nur Hartgusswalzen oder geschmiedete und induktiv gehärtete Stahlwalzen verwendet. Beide Walzentypen sind teuer und nur in bestimmten, d.h. relativ großen Abmessungen auf dem Markt erhältlich. Zudem sind sie mit großen Eigenspannungsproblemen behaftet. Darüber hinaus wäre auch eine höhere Verschleißfestigkeit erwünscht. Auch bezüglich der Einhaltung einer bestimmten Härteschichtdicke ergeben sich bei den bisher bekannten Walzen erhebliche Probleme, was sich nachteilig insbesondere auf die Formstabilität auswirkt. Bei induktiv gehärteten Schmiedestahlwalzen lässt sich die Härtetiefe zwar relativ genau festlegen, hier kommt es jedoch beim Übergang zwischen gehärteter zu ungehärteter Schicht zu einem Eigenspannungspeak. Hinzu kommt, dass eine Hartgusswalze nach einer jeweiligen Beschädigung nur abgedreht werden kann. Schließlich tritt bei einer Walze aus Hartgussmaterial radial von innen nach außen stets ein zunehmender Härteanstieg auf, wodurch das axiale Bohren von Heizkanälen durch den Walzenmantel beträchtlich erschwert wird.Until now, only chill rolls or forged and inductively hardened steel rolls have been used as heatable rolls with a particularly smooth, hard surface. Both types of rollers are expensive and available only in certain, ie relatively large dimensions on the market. In addition, they are subject to large residual stress problems. In addition, a higher wear resistance would be desirable. Also regarding the maintenance of a certain hardness layer thickness results in the previously known rollers considerable problems, which adversely affects in particular the dimensional stability. For inductive hardened forged steel rolls, although the depth of hardening can be set relatively precisely, in the transition from hardened to uncured layer an inherent stress peak occurs. In addition, a chill roll after a particular damage can only be turned off. Finally, in a roll of chilled cast material, an increasing increase in hardness always occurs radially from the inside to the outside, whereby the axial drilling of heating channels through the roll shell is considerably impeded.
Neben Hartgusswalzen und gehärteten Stahlwalzen ist auch Chromguss (KSTV) im Einsatz.In addition to chill rolls and hardened steel rolls, chrome casting (KSTV) is also used.
Beispielsweise bei Rädern von Schienenfahrzeugen und bei Stahlwalzwerken ist bereits eine so genannte "Panzerschweißung" bekannt.For example, in wheels of rail vehicles and steel rolling mills, a so-called "armored welding" is already known.
Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Walze sowie ein verbessertes Verfahren der eingangs genannten Art zu schaffen, bei denen die zuvor genannten Probleme beseitigt sind.The invention has for its object to provide an improved roller and an improved method of the type mentioned, in which the aforementioned problems are eliminated.
Diese Aufgabe wird bezüglich der beheizbaren Walze erfindungsgemäß dadurch gelöst, dass die Walze ein Grundrohr aus schweißbarem Stahl umfasst, auf das zumindest eine Schweißschicht aufgebracht ist, die eine größere Härte besitzt als das Grundrohr.This object is achieved with respect to the heatable roll according to the invention in that the roller comprises a base tube made of weldable steel, to which at least one welding layer is applied, which has a greater hardness than the base tube.
Das Grundrohr der Walze kann also aus einem relativ einfachen schweißbaren Stahl gefertigt werden, während darüber eine oder mehrere harte Schweißschichten aufgebracht werden.The base tube of the roller can thus be made of a relatively simple weldable steel, while over one or more hard welding layers are applied.
Vorteilhafterweise besteht die Schweißschicht aus einer mit dem Grundrohr verschweißbaren Metalllegierung. Dabei kommen grundsätzlich alle Metalllegierungen in Frage, die mit dem Grundrohr verschweißbar sind.Advantageously, the welding layer consists of a metal alloy which can be welded to the base tube. In principle, all metal alloys come into question, which are welded to the base tube.
Bevorzugt ist die Schweißschicht spiralförmig auf das Grundrohr aufgebracht. Die Schicht kann also beispielsweise bei sich drehendem Grundrohr spiralförmig aufgeschweißt werden.Preferably, the welding layer is spirally applied to the base tube. Thus, for example, the layer can be welded in a spiral manner when the base tube rotates.
Bevorzugt besitzt die Walze eine Oberflächenhärte nach Vickers ≥ 450 HV. Mit dem erfindungsgemäßen Aufbringen einer Schweißschicht sind problemlos Oberflächenhärten oberhalb eines solchen Wertes von etwa 450 HV erreichbar. Herkömmliche Hartgusswalzen besitzen Härten von etwa 530 HV. Mit dem erfindungsgemäßen Aufbringen einer Schweißschicht sind ohne weiteres Härten bis beispielsweise etwa 800 HV denkbar.The roll preferably has a surface hardness of Vickers ≥ 450 HV. With the application of a welding layer according to the invention surface hardnesses are above a value of about 450 HV without problems reachable. Conventional chill rolls have hardnesses of about 530 HV. With the application of a welding layer according to the invention, curing up to, for example, about 800 HV is conceivable without further ado.
Gemäß einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Walze besitzt diese eine Oberflächenhärte nach Vickers > 530 HV. Vorteilhafterweise besitzt sie eine Oberflächenhärte nach Vickers ≥ 600, insbesondere ≥ 700, insbesondere ≥ 750 und vorzugsweise von etwa 800 HV. Die Oberflächenhärte nach Vickers kann also insbesondere in einem Bereich von etwa 450 bis etwa 800 HV und vorzugsweise in einem Bereich von etwa 530 bis etwa 800 HV liegen.According to a preferred practical embodiment of the roll according to the invention, this has a surface hardness according to Vickers> 530 HV. Advantageously, it has a surface hardness of Vickers ≥ 600, in particular ≥ 700, in particular ≥ 750 and preferably of about 800 HV. The surface hardness according to Vickers can therefore in particular be in a range of about 450 to about 800 HV and preferably in a range of about 530 to about 800 HV.
Die Schweißschicht kann durch eine oder auch durch mehrere Schweißlagen gebildet sein. Dabei beträgt die Dicke einer jeweiligen Schweißlage vorzugsweise etwa 3 mm.The welding layer may be formed by one or by a plurality of welding layers. In this case, the thickness of a respective welding layer is preferably about 3 mm.
Die Gesamtdicke der Schweißschicht nach der Endbearbeitung der Oberfläche beispielsweise durch Drehen oder Schleifen liegt vorteilhafterweise in einem Bereich von etwa 1 bis etwa 20 mm, vorzugsweise in einem Bereich von etwa 3 bis etwa 10 mm.The total thickness of the welding layer after the finishing of the surface, for example by turning or grinding, is advantageously in a range from about 1 to about 20 mm, preferably in a range from about 3 to about 10 mm.
Da die zu schweißende Schicht bzw. Metalllegierung relativ frei bestimmbare Bestandteile besitzt, sind die physikalischen und chemischen Eigenschaften der Schicht bzw. der verschiedenen Lagen dieser Schicht variabel einstellbar. So nimmt gemäß einer zweckmäßigen praktischen Ausführungsform die Härte der Schweißschicht ausgehend vom Grundrohr radial nach außen zu, wodurch Eigenspannungen entsprechend reduziert werden.Since the layer or metal alloy to be welded has relatively freely determinable constituents, the physical and chemical properties of the layer or the various layers of this layer can be variably adjusted. Thus, according to an expedient practical embodiment, the hardness of the welding layer, starting from the base tube, increases radially outward, as a result of which internal stresses are correspondingly reduced.
Bei der beheizbaren Walze kann es sich insbesondere um eine rotierende Hohlwalze mit angeflanschten gelagerten Zapfen handeln.The heatable roll may in particular be a rotating hollow roll with flanged mounted journals.
Vorteilhafterweise ist die Walze mit peripheren, sich vorzugsweise parallel zur Walzenachse erstreckenden Heizkanälen oder -bohrungen versehen.Advantageously, the roller is provided with peripheral, preferably parallel to the roll axis extending heating channels or holes.
Eine bevorzugte Wandstärke der beheizbaren Walze liegt in einem Bereich von etwa 100 bis etwa 200 mm.A preferred wall thickness of the heatable roll is in a range of about 100 to about 200 mm.
Das Grundrohr der beheizbaren Walze kann insbesondere durch ein geschmiedetes Rohr, durch ein nahtlos gezogenes Rohr oder aus einem ausgedrehten Rundstahl bestehen.The base tube of the heatable roller may in particular consist of a forged tube, a seamlessly drawn tube or a turned round steel.
Wie bereits erwähnt, kann für die hier in Rede stehenden beheizbaren Walzen von in der Regel relativ dicker Wandstärke ein Grundrohr aus einfachem Stahl verwendet werden, das sehr leicht gebohrt werden kann. In der erfindungsgemäßen Walze können zudem die Eigenspannungen deutlich reduziert werden. Beim Aufheizen der Walze auf Temperaturen in einem Bereich von 100° bis 250°C sinkt dadurch die Summe von Eigenspannungen und äußeren Spannungen auf ein gut beherrschbares Niveau. Im Gegensatz zu den herkömmlichen Walzen ist erfindungsgemäß eine konstante Härteschichtdicke erreichbar, die eine deutlich bessere Formstabilität und ein besseres dynamisches Laufverhalten der Walze mit sich bringt.As already mentioned, a base tube made of simple steel, which can be drilled very easily, can be used for the heatable rolls of generally relatively thick wall thickness in question here. In addition, in the roll according to the invention, the residual stresses can be significantly reduced. When the roller is heated to temperatures in the range of 100 ° to 250 ° C, the sum of residual stresses and external stresses is reduced to a manageable level. In contrast to the conventional rolls, a constant hardness layer thickness can be achieved according to the invention, which brings about a significantly better dimensional stability and a better dynamic running behavior of the roll.
Ein weiterer entscheidender Vorteil der erfindungsgemäßen beheizbaren Walze besteht darin, dass sie verbesserte Reparaturmöglichkeiten bietet. So kann bei der erfindungsgemäßen Walze nach einer jeweiligen Beschädigung die jeweilige Reparatur durch ein erneutes Auftragschweißen erfolgen.Another decisive advantage of the heatable roller according to the invention is that it offers improved repair options. Thus, in the case of the roller according to the invention, after a respective damage, the respective repair can be carried out by renewed build-up welding.
Bezüglich des Verfahrens wird die zuvor angegebene Aufgabe nach der Erfindung entsprechend dadurch gelöst, dass auf ein Grundrohr aus schweißbarem Stahl zumindest eine Schweißschicht aufgebracht wird, die eine größere Härte besitzt als das Grundrohr.With regard to the method, the object stated above according to the invention is achieved accordingly by applying to a base tube made of weldable steel at least one welding layer which has a greater hardness than the base tube.
Dabei erfolgt das Aufschweißen der Schweißschicht zweckmäßigerweise unter Pulver oder unter Schutzgas und durch eine Materialzugabe in Form wenigstens eines Bandes oder Drahtes.The welding of the welding layer is expediently carried out under powder or under protective gas and by a material addition in the form of at least one band or wire.
Wie bereits erwähnt, kann die Schweißschicht vorteilhafterweise bei sich drehendem Grundkörper spiralförmig aufgebracht werden.As already mentioned, the welding layer can advantageously be applied spirally when the base body rotates.
Die Erfindung betrifft überdies allgemein ein Verfahren zu Herstellung einer Walze für den Einsatz bei der Papierherstellung, das also nicht nur zur Herstellung von Heizwalzen, sondern auch zur Herstellung anderer der Papierherstellung oder -behandlung dienender Walzen anwendbar ist. Dieses Verfahren zeichnet sich erfindungsgemäß dadurch aus, dass auf ein Grundrohr aus schweißbarem Stahl zumindest eine Schweißschicht aufgebracht wird und dass die endgültigen Werkstoffeigenschaften der Beschichtung nach dem Schweißauftrag durch eine entsprechende Wärmebehandlung eingestellt werden.The invention moreover relates generally to a process for producing a roll for use in papermaking, which is thus applicable not only for the production of heating rolls but also for the production of other rolls serving for the papermaking or treatment. According to the invention, this method is characterized in that at least one welding layer is applied to a base tube made of weldable steel and that the final material properties of the coating after the welding application are set by a corresponding heat treatment.
Dabei kann die Wärmebehandlung insbesondere eine Glühbehandlung umfassen.In this case, the heat treatment may in particular comprise an annealing treatment.
Gemäß einer bevorzugten praktischen Ausgestaltung des erfindungsgemäßen Verfahrens umfassen die über die nachträgliche Wärmebehandlung einstellbaren Werkstoffeigenschaften die Zähigkeit, die Gefügestruktur, die Formstabilität, die Eigenspannung, die Härte und/oder dergleichen.According to a preferred practical embodiment of the method according to the invention, the material properties which can be set via the subsequent heat treatment include the toughness, the microstructure, the dimensional stability, the residual stress, the hardness and / or the like.
Mit diesem Verfahren ist also insbesondere auch wieder eine beheizbare Walze aus einem Stahlgrundrohr mit harter Auftragsschweißschicht herstellbar. Die gewünschten Werkstoffeigenschaften, hier beispielsweise die Härte, können durch die anschließende Wärmebehandlung in der gewünschten Weise eingestellt werden.With this method, therefore, in particular, a heatable roller made of a steel base tube with a hard hardfacing layer can also be produced again. The desired material properties, here, for example, the hardness, can be adjusted by the subsequent heat treatment in the desired manner.
Bevorzugt wird auf das Grundrohr aus schweißbarem Stahl wieder zumindest eine Schweißschicht aufgebracht, die eine größere Härte besitzt als das Grundrohr.Preferably, at least one welding layer is applied to the base tube made of weldable steel, which has a greater hardness than the base tube.
Die Schweißschicht ist bevorzugt in Verbindung mit einer Wolframcarbidschicht vorgesehen.The welding layer is preferably provided in conjunction with a tungsten carbide layer.
Soweit hier von einer glatten Oberfläche die Rede ist, ist diese bevorzugt durch einen Rauigkeitswert Ra in einem Bereich von etwa 0,01 bis etwa 0,2 µm definiert.As far as a smooth surface is mentioned here, this is preferably defined by a roughness value Ra in a range from about 0.01 to about 0.2 μm.
Claims (23)
dadurch gekennzeichnet,
dass auf ein Grundrohr aus schweißbarem Stahl zumindest eine Schweißschicht aufgebracht wird und dass die endgültigen Werkstoffeigenschaften der Beschichtung nach dem Schweißauftrag durch eine entsprechende Wärmebehandlung eingestellt werden.Process for producing a roll for use in papermaking,
characterized,
that at least one welding layer is applied to a base tube made of weldable steel and that the final material properties of the coating are adjusted after the welding application by a corresponding heat treatment.
dadurch gekennzeichnet,
dass die Wärmebehandlung eine Glühbehandlung umfasst.Method according to claim 1,
characterized,
that the heat treatment comprises an annealing treatment.
dadurch gekennzeichnet,
dass die über die nachträgliche Wärmebehandlung einstellbaren Werkstoffeigenschaften die Zähigkeit, die Gefügestruktur, die Formstabilität, die Eigenspannung, die Härte und/oder dergleichen umfassen.Method according to claim 1 or 2,
characterized,
in that the material properties which can be set via the subsequent heat treatment include toughness, microstructure, dimensional stability, residual stress, hardness and / or the like.
dadurch gekennzeichnet,
dass auf das Grundrohr aus schweißbarem Stahl zumindest eine Schweißschicht aufgebracht wird, die eine größere Härte besitzt als das Grundrohr.Method according to one of the preceding claims,
characterized,
that at least one welding layer is applied to the base tube of weldable steel, which has a greater hardness than the base tube.
dadurch gekennzeichnet,
dass die Schweißschicht in Verbindung mit einer Wolframcarbidschicht vorgesehen ist.Method according to one of the preceding claims,
characterized,
that the welding layer is provided in connection with a tungsten carbide layer.
dadurch gekennzeichnet,
dass zur Herstellung einer mit einer glatten, harten Oberfläche versehenen beheizbaren Walze auf das Grundrohr aus schweißbarem Stahl zumindest eine Schweißschicht aufgebracht wird, die eine größere Härte besitzt als das Grundrohr.Method according to one of the preceding claims,
characterized,
that for the production of a heatable roller provided with a smooth, hard surface, at least one welding layer, which has a greater hardness than the base tube, is applied to the base tube made of weldable steel.
dadurch gekennzeichnet,
dass das Aufschweißen der Schweißschicht unter Pulver oder unter Schutzgas und durch eine Materialzugabe in Form wenigstens eines Bandes oder Drahtes erfolgt.Method according to claim 6,
characterized,
that the welding of the welding layer takes place under powder or under protective gas and by a material addition in the form of at least one band or wire.
dadurch gekennzeichnet,
dass die Schweißschicht durch eine mit dem Grundrohr verschweißbare Metalllegierung gebildet wird.Method according to claim 6 or 7,
characterized,
that the welding layer is formed by a weldable to the base pipe metal alloy.
dadurch gekennzeichnet,
dass die Schweißschicht bei sich drehendem Grundkörper spiralförmig aufgebracht wird.Method according to one of claims 6 to 8,
characterized,
that the welding layer is applied spirally with rotating body.
dadurch gekennzeichnet,
dass die Schweißschicht kontinuierlich durch eine Umfangsschwei-βung, anschließend einen Seitenschritt um eine Schweißnahtbreite, anschließend eine weitere Umfangsschweißung, usw. auf das Grundrohr aufgebracht wird.Method according to one of claims 6 to 9,
characterized,
in that the welding layer is continuously applied to the base pipe by a circumferential welding, then a side step around a seam width, then a further circumferential welding, etc.
dadurch gekennzeichnet,
dass mit der Schweißschicht eine Oberflächenhärte nach Vickers ≥ 450 HV erzeugt wird.Method according to one of claims 6 to 10,
characterized,
that with the welding layer a surface hardness according to Vickers ≥ 450 HV is generated.
dadurch gekennzeichnet,
dass mit der Schweißschicht eine Oberflächenhärte nach Vickers > 530 HV erzeugt wird.Method according to claim 11,
characterized,
that with the welding layer a surface hardness according to Vickers> 530 HV is generated.
dadurch gekennzeichnet,
dass mit der Schweißschicht eine Oberflächenhärte nach Vickers ≥ 600, insbesondere ≥ 700, insbesondere ≥ 750 und vorzugsweise von etwa 800 HV erzeugt wird.Method according to claim 12,
characterized,
that the welding layer is a surface Vickers hardness ≥ 600, in particular ≥ 700, in particular ≥ 750 and preferably formed of about 800 HV.
dadurch gekennzeichnet,
dass mit der Schweißschicht eine Oberflächenhärte nach Vickers in einem Bereich von etwa 450 bis etwa 800 HV erzeugt wird.Method according to one of claims 6 to 13,
characterized,
that the Vickers surface hardness is generated in the range of about 450 to about 800 HV with the weld layer.
dadurch gekennzeichnet,
dass mit der Schweißschicht eine Oberflächenhärte nach Vickers in einem Bereich von etwa 530 bis etwa 800 HV erzeugt wird.Method according to claim 14,
characterized,
that the Vickers surface hardness is generated in the range of about 530 to about 800 HV with the weld layer.
dadurch gekennzeichnet,
dass die Schweißschicht durch wenigstens zwei Schweißlagen gebildet wird.Method according to one of claims 6 to 15,
characterized,
that the welding layer is formed by at least two welding layers.
dadurch gekennzeichnet,
dass die Dicke einer jeweiligen Schweißlage etwa 3 mm gewählt wird.Method according to one of claims 6 to 16,
characterized,
that the thickness of each welding position is selected about 3 mm.
dadurch gekennzeichnet,
dass die Gesamtdicke der Schweißschicht nach der Endbearbeitung in einem Bereich von etwa 1 bis etwa 20 mm, vorzugsweise in einem Bereich von etwa 3 bis etwa 10 mm gewählt wird.Method according to one of claims 6 to 17,
characterized,
that the total thickness of the welding layer after finishing is selected in a range of about 1 to about 20 mm, preferably in a range of about 3 to about 10 mm.
dadurch gekennzeichnet,
dass die Schweißschicht mit einer ausgehend vom Grundrohr radial nach außen zunehmenden Härte erzeugt wird.Method according to one of claims 6 to 18,
characterized,
that the welding layer is produced with a starting from the base pipe radially outwardly increasing hardness.
dadurch gekennzeichnet,
dass sie mit einer Wandstärke in einem Bereich von etwa 100 bis etwa 200 mm gefertigt wird.Method according to one of claims 6 to 19,
characterized,
that it is manufactured with a wall thickness in a range of about 100 to about 200 mm.
dadurch gekennzeichnet,
dass das Grundrohr durch ein geschmiedetes Rohr gebildet wird.Method according to one of claims 6 to 20,
characterized,
that the ground pipe is formed by a forged pipe.
dadurch gekennzeichnet,
dass das Grundrohr durch ein nahtlos gezogenes Rohr gebildet wird.Method according to one of claims 6 to 21,
characterized,
that the base pipe is formed by a seamlessly drawn tube.
dadurch gekennzeichnet,
dass das Grundrohr durch einen ausgedrehten Rundstahl gebildet wird.Method according to one of claims 6 to 21,
characterized,
that the base tube is formed by a turned round steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005040869A DE102005040869A1 (en) | 2005-08-29 | 2005-08-29 | Heatable roller |
| EP06111988A EP1760193B1 (en) | 2005-08-29 | 2006-03-30 | Heatable roll |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06111988.9 Division | 2006-03-30 | ||
| EP06111988A Division EP1760193B1 (en) | 2005-08-29 | 2006-03-30 | Heatable roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1840261A1 true EP1840261A1 (en) | 2007-10-03 |
| EP1840261B1 EP1840261B1 (en) | 2011-11-09 |
Family
ID=37461538
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06111988A Expired - Fee Related EP1760193B1 (en) | 2005-08-29 | 2006-03-30 | Heatable roll |
| EP07013737A Expired - Fee Related EP1840261B1 (en) | 2005-08-29 | 2006-03-30 | Method for manufacturing a cylinder |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06111988A Expired - Fee Related EP1760193B1 (en) | 2005-08-29 | 2006-03-30 | Heatable roll |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070057019A1 (en) |
| EP (2) | EP1760193B1 (en) |
| AT (2) | ATE532900T1 (en) |
| DE (1) | DE102005040869A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013212343A1 (en) | 2013-06-26 | 2014-12-31 | Voith Patent Gmbh | Heat transfer roller and its production process |
| DE102018002473A1 (en) * | 2018-03-24 | 2019-09-26 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Mixing device for fibers or chips and binders |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710741A2 (en) * | 1990-11-30 | 1996-05-08 | S.D. Warren Company | Method and apparatus for calendering paper |
| WO2003076714A2 (en) * | 2002-03-13 | 2003-09-18 | Metso Paper, Inc. | Nip roll of a paper or board machine |
| DE10235142A1 (en) * | 2002-08-01 | 2004-02-19 | Shw Casting Technologies Gmbh | Roller for thermally pressure treating strip-like media, such as paper or fleece, in a multiple roller calender comprises a base body made from tempered forged steel or alloyed cast iron |
| EP1529877A1 (en) * | 2003-11-05 | 2005-05-11 | Voith Paper Patent GmbH | Roller for thermal treatment of a web |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2295702A (en) * | 1939-09-01 | 1942-09-15 | Haynes Stellite Co | Method of and apparatus for applying metal coatings |
| US2964251A (en) * | 1956-09-21 | 1960-12-13 | United States Pipe Foundry | Roll structure |
| US3339056A (en) * | 1966-06-06 | 1967-08-29 | Colonial Broach & Machine Comp | Machine and method of applying metal layer |
| GB1271959A (en) * | 1968-07-26 | 1972-04-26 | Hitachi Ltd | Compound cast rolls |
| US3689209A (en) * | 1970-07-27 | 1972-09-05 | Gleb Andreevich Vinogradov | Apparatus for manufacturing rolled products from powdery materials |
| US4149060A (en) * | 1977-07-25 | 1979-04-10 | Combustion Engineering, Inc. | Angled strip cladding system |
| DE3662409D1 (en) * | 1985-04-30 | 1989-04-20 | Yamauchi Corp | Press roll for paper machines |
| US5167068A (en) * | 1988-04-28 | 1992-12-01 | Valmet Paper Machinery Inc. | Method for manufacturing a roll directly contacting a web |
| US5252185A (en) * | 1990-11-30 | 1993-10-12 | S. D. Warren Company | Method and apparatus for calendering paper and internally heated roll |
| EP0586731B1 (en) * | 1992-09-09 | 1997-05-14 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Press roll and paper machine with press roll |
| US5324248A (en) * | 1992-11-03 | 1994-06-28 | Composite Development Corporation | Composite machine roll and method of manufacture |
| US5616263A (en) * | 1992-11-09 | 1997-04-01 | American Roller Company | Ceramic heater roller |
| JPH11133572A (en) * | 1997-08-26 | 1999-05-21 | Fuji Photo Film Co Ltd | Thermal processor and thermal developing device using it |
| JP3406293B2 (en) * | 1999-12-03 | 2003-05-12 | 株式会社ディムコ | Metallic ring and method for producing the same |
| JP2001353778A (en) * | 2000-06-15 | 2001-12-25 | Fuji Photo Film Co Ltd | Calender treatment apparatus |
| US6727465B1 (en) * | 2003-02-24 | 2004-04-27 | General Electric Company | Apparatus for overlay welding of a tube exterior |
-
2005
- 2005-08-29 DE DE102005040869A patent/DE102005040869A1/en not_active Withdrawn
-
2006
- 2006-03-30 AT AT07013737T patent/ATE532900T1/en active
- 2006-03-30 EP EP06111988A patent/EP1760193B1/en not_active Expired - Fee Related
- 2006-03-30 EP EP07013737A patent/EP1840261B1/en not_active Expired - Fee Related
- 2006-03-30 AT AT06111988T patent/ATE534766T1/en active
- 2006-08-22 US US11/466,334 patent/US20070057019A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710741A2 (en) * | 1990-11-30 | 1996-05-08 | S.D. Warren Company | Method and apparatus for calendering paper |
| WO2003076714A2 (en) * | 2002-03-13 | 2003-09-18 | Metso Paper, Inc. | Nip roll of a paper or board machine |
| DE10235142A1 (en) * | 2002-08-01 | 2004-02-19 | Shw Casting Technologies Gmbh | Roller for thermally pressure treating strip-like media, such as paper or fleece, in a multiple roller calender comprises a base body made from tempered forged steel or alloyed cast iron |
| EP1529877A1 (en) * | 2003-11-05 | 2005-05-11 | Voith Paper Patent GmbH | Roller for thermal treatment of a web |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE532900T1 (en) | 2011-11-15 |
| US20070057019A1 (en) | 2007-03-15 |
| ATE534766T1 (en) | 2011-12-15 |
| EP1840261B1 (en) | 2011-11-09 |
| EP1760193B1 (en) | 2011-11-23 |
| EP1760193A2 (en) | 2007-03-07 |
| DE102005040869A1 (en) | 2007-03-08 |
| EP1760193A3 (en) | 2007-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2268443B1 (en) | Method of producing a roll comprising a welded-on surface ; method of repairing a used roll with a welded-on surface | |
| DE102009004562B4 (en) | Roller body for a roller for treating a material and method for producing a roller body | |
| EP2582456B1 (en) | Profiled bandage for a roller press | |
| EP2192201B1 (en) | Hardened spring steel, spring element and method for manufacturing a spring element | |
| EP1263540B1 (en) | Method for the production of thin-walled steel components and components produced therefrom | |
| DE102015111090B3 (en) | Process for the preparation of a seamless, multi-layered tube product and round or polygonal block for use in this process | |
| EP3685062B1 (en) | Method for producing a bearing component and a bearing component | |
| EP1840261B1 (en) | Method for manufacturing a cylinder | |
| EP2064388A1 (en) | Method for producing a roller body and roller body | |
| EP2024654B1 (en) | Method for the production of a rolling bearing component | |
| AT512108B1 (en) | Heat transfer roll and method of manufacturing a heat transfer roll | |
| DE102004022248B4 (en) | Process for the production of balls or ball segments, as well as subsequently manufactured ball element for two-part ball studs | |
| EP3601629B1 (en) | Piston ring with shot-peened running-in layer and method for the production thereof | |
| DE102009016079A1 (en) | Ball stud made of a steel with a bainitic structure and method for producing such ball studs | |
| EP1840262B1 (en) | Method for manufacturing a cylinder | |
| EP0052092B1 (en) | Manufacturing process of hollow machine cylinders | |
| DE202012007144U1 (en) | Profiled bandage for a roller press | |
| WO2014206616A1 (en) | Heat transfer roller and method for producing the same | |
| DE102015111096B4 (en) | Process for producing a seamless, multi-layer pipe product | |
| DE102008012550A1 (en) | Thermally treating a tubular body of a delivery pipe, comprises heating and hardening an inner surface of the body, subjecting an outer surface of the body with a coolant, and adjusting the cross-section of the body by a molding tool | |
| DE102022213177A1 (en) | Mechanically, in particular tribologically stressed component and process for its manufacture | |
| DE102022002394A1 (en) | Method for producing a workpiece made of steel and workpiece produced by the method | |
| DE102008001052A1 (en) | Mechanically highly stressed machinery component i.e. suction roll sleeve, producing method for use on paper machine, involves altering material characteristics of sleeve based on increase in resistance against vibratory fissure corrosion | |
| DE102008040910A1 (en) | Mechanically highly stressed machinery component i.e. suction roll sleeve, producing method for use on paper machine, involves altering material characteristics of sleeve based on increase in resistance against vibratory fissure corrosion |
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 |
|
| AC | Divisional application: reference to earlier application |
Ref document number: 1760193 Country of ref document: EP Kind code of ref document: P |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MICHELKENS, FRANZ-JOSEF Inventor name: ESSLING, ANDREAS Inventor name: DRIES, OLAF Inventor name: LINDER, HEIKO Inventor name: AUTRATA, JOCHEN Inventor name: BECKERS, RALF Inventor name: BAUMEISTER, THOMAS Inventor name: LOEFFLER, CHRISTIAN Inventor name: CONRAD, HANS-ROLF Inventor name: WIEMER, PETER, DR. RER. NAT. |
|
| 17P | Request for examination filed |
Effective date: 20071024 |
|
| AKX | Designation fees paid |
Designated state(s): AT DE FI IT SE |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| 17Q | First examination report despatched |
Effective date: 20110908 |
|
| AC | Divisional application: reference to earlier application |
Ref document number: 1760193 Country of ref document: EP Kind code of ref document: P |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE FI IT SE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502006010582 Country of ref document: DE Effective date: 20120112 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120323 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20120313 Year of fee payment: 7 |
|
| 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 |
Effective date: 20120810 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502006010582 Country of ref document: DE Effective date: 20120810 |
|
| 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: 20120330 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20120313 Year of fee payment: 7 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130330 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 532900 Country of ref document: AT Kind code of ref document: T Effective date: 20130330 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502006010582 Country of ref document: DE Effective date: 20131001 |
|
| 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: 20131001 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130330 |