EP0925128B1 - Method and device for making a metal corrugated sheet provided with a microstructure transverse to the corrugation - Google Patents
Method and device for making a metal corrugated sheet provided with a microstructure transverse to the corrugation Download PDFInfo
- Publication number
- EP0925128B1 EP0925128B1 EP97944760A EP97944760A EP0925128B1 EP 0925128 B1 EP0925128 B1 EP 0925128B1 EP 97944760 A EP97944760 A EP 97944760A EP 97944760 A EP97944760 A EP 97944760A EP 0925128 B1 EP0925128 B1 EP 0925128B1
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- EP
- European Patent Office
- Prior art keywords
- microstructures
- corrugation
- microstructure
- corrugating
- metal sheet
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
- F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
- F01N2330/04—Methods of manufacturing
Definitions
- the present invention relates to a method and an apparatus for Manufacture of a metal sheet with a corrugation that is a first predetermined Has corrugation height, the sheet being transverse or at an angle to the Wave a microstructure with a second, much smaller wave height Has.
- metal sheets are primarily honeycomb bodies for catalytic Processed converter, such as those used in exhaust systems of motor vehicles Find use.
- the invention is not for this application limited because z. B. Applications in heat exchangers are possible.
- microstructures are e.g. described in WO 90/08249 or WO 96/09892.
- How Even in the prior art, underneath a microstructure is undulated Sheet metal understood a structure that is much smaller Height than the corrugation of the sheet.
- a microstructure protrude from a sheet on one or both sides, for example by at least 15 ⁇ or by 0.01 to about 0.3 times the Corrugation height of the metal sheet.
- Corrugated metal sheets are generally known in the art intermeshing corrugated rollers produced, which preferably have an involute toothing or have a similar toothing. There are however other wave forms, e.g. Trapezoidal shape, zigzag shape etc., known.
- a honeycomb body through which exhaust gas flows in particular in a catalytic converter, transversely or diagonally to the direction of flow running microstructures, so-called transverse structures (TS design)
- TS design transverse structures
- the prior art therefore provides for microstructures in certain To arrange distances in the flow direction one behind the other, especially in Distances of less than 20 mm, in particular less than 10 mm.
- microstructures are in relation to the typical thickness of sheets for Honeycomb bodies were relatively small, it was previously assumed that they do not significantly interfere with the further manufacturing process, so that a Processing in the usual corrugated rollers and further with known ones Manufacturing steps to form a honeycomb body took place.
- a device according to the preamble of claim 1 or a A method according to the preamble of claim 9 is known from US-A-4 888 972.
- the object of the present invention is a manufacturing method and to create a corresponding device with which corrugated metal sheets with microstructures running diagonally or diagonally to the corrugation economically and can be manufactured without inadmissible cold forming.
- a device according to claim 1 serves to achieve this object and a method according to claim 9.
- Advantageous refinements are specified in the respective dependent claims.
- the device according to the invention for producing a metal sheet with a corrugation which has a first predetermined corrugation height, the Sheet with a microstructure across or at an angle to the corrugation has a second, significantly smaller corrugation height contains a device to create the microstructure, a pair of intermeshing Corrugated rollers, which are behind the device for generating the microstructure are arranged, the corrugated rollers having recesses on their outer surfaces have suitably arranged and / or big enough for the recording of the microstructures, so that the microstructures are at waves of the metal sheet are not deformed by the corrugated rollers.
- microstructures are relatively complex, after all, the crucial one arises Advantage that microstructures with precisely defined and everywhere constant height can be produced without first very strong cold deformation must take place, which later partly through the wave process is flattened.
- Such a device can therefore especially for the production of microstructures in corrugated Sheet layers with a thickness of e.g. 25 to 50 ⁇ m can be used without any problems.
- corrugated rollers with a kind of involute toothing used are used, but the invention is not on this type of rollers is limited.
- all types of corrugated rolls have some Game to each other, whereby on the flanks and / or on the tops of the Teeth or in the spaces between the teeth during the Distances that are difficult to reproduce can occur in the production process.
- this game has no effect on the level of microstructures.
- the width and depth of at least the width or height of the microstructures should correspond. But it is also possible to use the microstructures can be re-shaped if necessary using suitably deformed grooves.
- the device to create the microstructure and the corrugated rollers so to each other are adjustable that the microstructures generated are always in recesses the corrugated rollers.
- the easiest way to do this is through a very close achieve spatial arrangement, but can also by suitable adjustment devices can be achieved at larger distances.
- honeycomb bodies are made from alternating layers of smooth and corrugated sheets or from alternating layers of different corrugated sheets Sheets are formed, various designs being known, for example spirally wound, S-shaped or in the manner of a Involute intertwined sheet layers.
- the microstructures may to be disruptive Clearances between the sheet layers.
- the through the microstructures resulting gaps between adjacent sheet metal layers leave from a certain Size is difficult to bridge by solder, which is why microstructures on the wave crests on both sides of the corrugated sheet layers can sometimes be undesirable.
- the corrugated rollers at least one smoothing device is arranged downstream of the microstructures on the wave crests of the corrugated sheet on one or both sides can flatten again.
- Such a device can, for example a corrugated roller with recesses that runs against a flat roller.
- microstructures on the wave crests are flattened, where they anyway have no influence on the later in the honeycomb body would have flowing current, which means the connection by means of Lotes much easier.
- the other microstructures remain unchanged and can perform its intended function without further interference with the Fulfill the production process.
- corrugated rollers and arranged behind them Smoothing device it is also possible instead of corrugated rollers and arranged behind them Smoothing device to use special corrugated rollers in their troughs have no recesses, so that there the microstructures can be flattened. This can be achieved particularly well if if the corrugated rollers have little play between opposite Have wave valleys and wave crests.
- microstructures which are no longer deformed after their creation and therefore very well defined and reproducible.
- the microstructures can be soldered to one another Wave crests on at least one of the two sides in the corrugated rollers or be flattened in a subsequent smoothing device.
- Fig. 1 is the heart of the present invention, namely a shaft device shown for metal sheets.
- a metal sheet 1 which is already in a device for the production of microstructures with downward pointing Microstructures 6 and with upward facing microstructures 7 has been provided, is fed to a pair of corrugated rollers 3a, 3b.
- This Corrugated rollers have cutouts 8 on their surface, which in particular are executed in the form of grooves.
- These recesses 8, of which only one is shown in the drawing take the previously created microstructures 6, 7 on, so that when the sheet is corrugated by the corrugation process not be influenced.
- the height B of the microstructures 6, 7 is essential smaller than the first corrugation height A of the corrugated metal sheet 1.
- Fig. 2 is the production flow for the manufacture of a schematic corrugated sheet with microstructures.
- the metal sheet 1 runs first by means 2a, 2b for generating the microstructure, as is known from the prior art. In particular, it can around cylindrical rollers with corresponding surface structures or around single narrow slices act together by cold working apply the microstructure to the metal sheet 1. This will then fed to a pair of corrugated rollers 3a, 3b, as shown in more detail in FIG. 1 are shown.
- the microstructures on the wave crests 9, 10 of the corrugated metal sheet 1 are undesirable, they can be smoothed by smoothing devices 4a, 4b or 5a, 5b.
- smoothing devices consist, for example, of a cylindrical roller 4a or 5b with a smooth surface, which against a corrugated roller 4b or 5a runs, these corrugated rollers preferably having the same recesses, like those used to make the curl.
- Corrugated metal sheets produced in this way with microstructures can are used in particular for honeycomb bodies in exhaust systems. she increase the heat transfer between the honeycomb body and a flowing through Fluid and accelerate diffusion processes, which in particular is advantageous for the effectiveness of a catalytic converter.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
- Laminated Bodies (AREA)
- Metal Rolling (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Herstellen eines Metallbleches mit einer Wellung, die eine erste vorgegebene Wellhöhe aufweist, wobei das Blech quer oder in einem Winkel zu der Welle eine Mikrostruktur mit einer zweiten, wesentlich kleineren Wellhöhe hat. Solche Metallbleche werden vor allem zu Wabenkörpern für katalytische Konverter verarbeitet, wie sie insbesondere in Abgasanlagen von Kraftfahrzeugen Einsatz finden. Jedoch ist die Erfindung nicht auf diese Anwendung beschränkt, da auch z. B. Anwendungen in Wärmetauschern möglich sind.The present invention relates to a method and an apparatus for Manufacture of a metal sheet with a corrugation that is a first predetermined Has corrugation height, the sheet being transverse or at an angle to the Wave a microstructure with a second, much smaller wave height Has. Such metal sheets are primarily honeycomb bodies for catalytic Processed converter, such as those used in exhaust systems of motor vehicles Find use. However, the invention is not for this application limited because z. B. Applications in heat exchangers are possible.
Einzelheiten zu der Form und den Vorteilen von solchen Mikrostrukturen sind z.B. in der WO 90/08249 oder der WO 96/09892 beschrieben. Wie schon im Stand der Technik wird unter einer Mikrostruktur in einem gewellten Blech eine Struktur verstanden, welche eine wesentlich geringere Höhe hat als die Wellung des Bleches. Insbesondere kann eine Mikrostruktur zu einer oder beiden Seiten aus einem Blech herausragen, und zwar beispielsweise um mindestens 15 µ oder um das 0,01 bis etwa 0,3fache der Wellhöhe des Metallbleches.Details of the shape and advantages of such microstructures are e.g. described in WO 90/08249 or WO 96/09892. How Even in the prior art, underneath a microstructure is undulated Sheet metal understood a structure that is much smaller Height than the corrugation of the sheet. In particular, a microstructure protrude from a sheet on one or both sides, for example by at least 15 µ or by 0.01 to about 0.3 times the Corrugation height of the metal sheet.
Gewellte Metallbleche werden im Stand der Technik im allgemeinen durch miteinander kämmende Wellwalzen hergestellt, die vorzugsweise eine Evolventenverzahnung oder eine ähnlich gestaltete Verzahnung aufweisen. Es sind jedoch auch andere Wellformen, z.B. Trapezform, Zickzackform etc., bekannt. In einem von Abgas durchströmten Wabenkörper, insbesondere in einem katalytischen Konverter, bewirken quer oder schräg zur Strömungsrichtung verlaufende Mikrostrukturen, sogenannte Transversalstrukturen (TS-Design), einen besseren Wärmeübergang zwischen Abgas und Wabenkörper und eine Verbesserung der Diffusionsvorgänge, die für die katalytische Effektivität des Wabenkörpers wichtig sind.Corrugated metal sheets are generally known in the art intermeshing corrugated rollers produced, which preferably have an involute toothing or have a similar toothing. There are however other wave forms, e.g. Trapezoidal shape, zigzag shape etc., known. In a honeycomb body through which exhaust gas flows, in particular in a catalytic converter, transversely or diagonally to the direction of flow running microstructures, so-called transverse structures (TS design), better heat transfer between exhaust gas and honeycomb body and an improvement in the diffusion processes required for catalytic Effectiveness of the honeycomb body are important.
Im Stand der Technik ist daher vorgesehen, Mikrostrukturen in bestimmten Abständen in Strömungsrichtung hintereinander anzuordnen, insbesondere in Abständen von weniger als 20 mm, insbesondere von weniger als 10 mm.The prior art therefore provides for microstructures in certain To arrange distances in the flow direction one behind the other, especially in Distances of less than 20 mm, in particular less than 10 mm.
Da die Mikrostrukturen im Verhältnis zur typischen Dicke von Blechen für Wabenkörper relativ klein waren, war man bisher davon ausgegangen, daß sie den weiteren Fertigungsprozeß nicht maßgeblich stören, so daß eine Verarbeitung in den üblichen Wellwalzen und im weiteren mit bekannten Herstellungsschritten zur Ausbildung eines Wabenkörpers erfolgte.Since the microstructures are in relation to the typical thickness of sheets for Honeycomb bodies were relatively small, it was previously assumed that they do not significantly interfere with the further manufacturing process, so that a Processing in the usual corrugated rollers and further with known ones Manufacturing steps to form a honeycomb body took place.
Es hat sich aber gezeigt, daß beim Wellen eines Bleches, welches schon Mikrostrukturen aufweist, diese Mikrostrukturen zum Teil wieder flachgedrückt werden, wobei dies zusätzlich noch, abhängig vom Spiel der Wellwalzen zueinander, unregelmäßig erfolgt. Bei dieser Art der Herstellung mußten die Mikrostrukturen zunächst mit einer größeren Wellhöhe hergestellt werden als im Endergebnis gewünscht war, um diesen Effekt auszugleichen. Die dabei auftretenden Kaltverformungen waren bei manchen Ausgangsmaterialien nur noch schwer ohne Schäden zu erreichen. Bei immer dünner werdenden Blechen und immer kleineren Wellhöhe verstärkt sich dieses Problem. Da inzwischen Wabenkörper mit z.B. 500 Zellen pro Inch2 (cpsi) und mehr hergestellt werden sollen, wobei auch Bleche bis zu einer Dicke von unter 30 µm in Betracht gezogen werden, ergaben sich immer stärkere herstellungstechnische Schwierigkeiten.However, it has been shown that when a sheet is corrugated, which already has microstructures, these microstructures are partially flattened again, this additionally taking place irregularly, depending on the play of the corrugated rollers with respect to one another. With this type of production, the microstructures first had to be produced with a larger corrugation height than was desired in the end result in order to compensate for this effect. The cold deformations that occurred were difficult to achieve with some raw materials without damage. This problem is exacerbated with increasingly thin sheets and ever smaller corrugation heights. Since honeycomb bodies with, for example, 500 cells per inch 2 (cpsi) and more are to be produced in the meantime, and sheets up to a thickness of less than 30 μm are also being considered, there have been increasing manufacturing difficulties.
Eine Vorrichtung nach dem Oberbegriff des Anspruchs 1 bzw. Ein
Verfahren nach dem Oberbegriff des Anspruchs 9 ist aus der US-A-4 888 972 bekannt.A device according to the preamble of
Aufgabe der vorliegenden Erfindung ist es, ein Herstellungsverfahren und eine entsprechende Vorrichtung zu schaffen, mit denen gewellte Metallbleche mit quer oder schräg zur Wellung laufenden Mikrostrukturen wirtschaftlich und ohne unzulässige Kaltverformung hergestellt werden können.The object of the present invention is a manufacturing method and to create a corresponding device with which corrugated metal sheets with microstructures running diagonally or diagonally to the corrugation economically and can be manufactured without inadmissible cold forming.
Zur Lösung dieser Aufgabe dient eine Vorrichtung gemäß dem Anspruch 1
sowie ein Verfahren gemäß dem Anspruch 9. Vorteilhafte Ausgestaltungen
sind in den jeweils abhängigen Ansprüchen angegeben.A device according to
Die erfindungsgemäße Vorrichtung zum Herstellen eines Metallbleches mit einer Wellung, die eine erste vorgegebene Wellhöhe aufweist, wobei das Blech quer oder in einem Winkel zu der Wellung eine Mikrostruktur mit einer zweiten, wesentlich kleineren Wellhöhe aufweist, enthält eine Einrichtung zur Erzeugung der Mikrostruktur, ein Paar miteinander kämmende Wellwalzen, welche hinter der Einrichtung zur Erzeugung der Mikrostruktur angeordnet sind, wobei die Wellwalzen an ihren Außenflächen Aussparungen aufweisen, die passend angeordnet und/oder genügend groß für die Aufnahme der Mikrostrukturen sind, so daß die Mikrostrukturen beim Wellen des Metallbleches nicht von den Wellwalzen verformt werden. Obwohl die Herstellung eines solchen Wellwalzenpaares insbesondere für schräg verlaufende Mikrostrukturen relativ aufwendig ist, ergibt sich doch der entscheidende Vorteil, daß Mikrostrukturen mit exakt definierter und überall gleichbleibender Höhe hergestellt werden können, ohne daß zunächst eine sehr starke Kaltverformung stattfinden muß, die später wieder teilweise durch den Wellvorgang flachgedrückt wird. Eine solche Vorrichtung kann daher insbesondere auch für die Herstellung von Mikrostrukturen in gewellten Blechlagen einer Dicke von z.B. 25 bis 50 µm problemlos angewendet werden.The device according to the invention for producing a metal sheet with a corrugation which has a first predetermined corrugation height, the Sheet with a microstructure across or at an angle to the corrugation has a second, significantly smaller corrugation height, contains a device to create the microstructure, a pair of intermeshing Corrugated rollers, which are behind the device for generating the microstructure are arranged, the corrugated rollers having recesses on their outer surfaces have suitably arranged and / or big enough for the recording of the microstructures, so that the microstructures are at waves of the metal sheet are not deformed by the corrugated rollers. Although the Production of such a pair of corrugated rollers, in particular for inclined ones Microstructures are relatively complex, after all, the crucial one arises Advantage that microstructures with precisely defined and everywhere constant height can be produced without first very strong cold deformation must take place, which later partly through the wave process is flattened. Such a device can therefore especially for the production of microstructures in corrugated Sheet layers with a thickness of e.g. 25 to 50 µm can be used without any problems.
Typischerweise werden Wellwalzen mit einer Art Evolventenverzahnung verwendet, wobei die Erfindung aber nicht auf diese Art von Walzen beschränkt ist. Im allgemeinen haben alle Arten von Wellwalzen ein gewisses Spiel zueinander, wodurch an den Flanken und/oder auf den Kuppen der Zähne bzw. in den Zwischenräumen zwischen den Zähnen während des Produktionsprozesses nur schwer reproduzierbare Abstände auftreten können. Bei den erfindungsgemäß mit Aussparungen versehenen Wellwalzen hat dieses Spiel keinerlei Einfluß auf die Höhe der Mikrostrukturen.Typically, corrugated rollers with a kind of involute toothing used, but the invention is not on this type of rollers is limited. In general, all types of corrugated rolls have some Game to each other, whereby on the flanks and / or on the tops of the Teeth or in the spaces between the teeth during the Distances that are difficult to reproduce can occur in the production process. In the corrugated rollers provided with recesses according to the invention this game has no effect on the level of microstructures.
Besonders einfach ist es, die Aussparungen in Form von Nuten zu gestalten, die in ihrer Breite und Tiefe mindestens der Breite bzw. Höhe der Mikrostrukturen entsprechen sollten. Es ist aber auch möglich, die Mikrostrukturen durch geeignet verformte Nuten ggf. nochmals nachzuformen.It is particularly easy to design the recesses in the form of grooves, the width and depth of at least the width or height of the microstructures should correspond. But it is also possible to use the microstructures can be re-shaped if necessary using suitably deformed grooves.
Wichtig bei der erfindungsgemäßen Vorrichtung ist es auch, daß die Einrichtung zur Erzeugung der Mikrostruktur und die Wellwalzen so zueinander justierbar sind, daß die erzeugten Mikrostrukturen immer in Aussparungen der Wellwalzen treffen. Dies läßt sich am einfachsten durch eine sehr nahe räumliche Anordnung erreichen, kann jedoch auch durch geeignete Justiervorrichtungen bei größeren Abständen erreicht werden.It is also important in the device according to the invention that the device to create the microstructure and the corrugated rollers so to each other are adjustable that the microstructures generated are always in recesses the corrugated rollers. The easiest way to do this is through a very close achieve spatial arrangement, but can also by suitable adjustment devices can be achieved at larger distances.
Typischerweise werden Wabenkörper aus abwechselnden Lagen von glatten und gewellten Blechen oder aus abwechselnden Lagen unterschiedlich gewellter Bleche gebildet, wobei verschiedene Bauformen bekannt sind, beispielsweise spiralförmig gewickelte, s-förmig verschlungene oder nach Art einer Evolvente verschlungene Blechlagen.Typically honeycomb bodies are made from alternating layers of smooth and corrugated sheets or from alternating layers of different corrugated sheets Sheets are formed, various designs being known, for example spirally wound, S-shaped or in the manner of a Involute intertwined sheet layers.
Sollen solche aufeinanderliegenden Blechlagen miteinander verlötet werden, so können die Mikrostrukturen je nach ihrer Höhe u.U. zu störenden Abständen zwischen den Blechlagen führen. Die durch die Mikrostrukturen entstehenden Spalte zwischen benachbarten Blechlagen lassen ab einer bestimmten Größe sich nur schwer durch Lot überbrücken, weshalb Mikrostrukturen auf den Wellenbergen auf beiden Seiten der gewellten Blechlagen manchmal unerwünscht sein können. Für diesen Fall sieht eine besondere Ausführungsform der erfindungsgemäßen Vorrichtung vor, daß den Wellwalzen mindestens eine Glättungseinrichtung nachgeordnet ist, die die Mikrostrukturen auf den Wellenbergen des gewellten Bleches einseitig oder beidseitig wieder flachdrücken kann. Eine solche Vorrichtung kann beispielsweise eine Wellwalze mit Aussparungen sein, die gegen eine flache Walze läuft. Auf diese Weise werden nur Mikrostrukturen auf den Wellenbergen flachgedrückt, wo sie ohnehin keinen Einfluß auf die später in dem Wabenkörper fließende Strömung haben würden, wodurch sich die Anbindung mittels Lotes wesentlich vereinfacht. Die übrigen Mikrostrukturen bleiben unverändert und können ihre vorgesehene Funktion ohne weitere Störung des Produktionsablaufes erfüllen.If such sheet metal layers lying on top of one another are to be soldered to one another, depending on their height, the microstructures may to be disruptive Clearances between the sheet layers. The through the microstructures resulting gaps between adjacent sheet metal layers leave from a certain Size is difficult to bridge by solder, which is why microstructures on the wave crests on both sides of the corrugated sheet layers can sometimes be undesirable. In this case it looks special Embodiment of the device according to the invention that the corrugated rollers at least one smoothing device is arranged downstream of the microstructures on the wave crests of the corrugated sheet on one or both sides can flatten again. Such a device can, for example a corrugated roller with recesses that runs against a flat roller. In this way, only microstructures on the wave crests are flattened, where they anyway have no influence on the later in the honeycomb body would have flowing current, which means the connection by means of Lotes much easier. The other microstructures remain unchanged and can perform its intended function without further interference with the Fulfill the production process.
Alternativ ist es auch möglich, statt Wellwalzen und dahinter angeordneter Glättungseinrichtung spezielle Wellwalzen zu verwenden, die in ihren Wellentälern keine Aussparungen aufweisen, so daß dort die Mikrostrukturen flachgedrückt werden können. Dies läßt sich besonders gut dann erreichen, wenn die Wellwalzen nur ein geringes Spiel zwischen gegenüberliegenden Wellentälern und Wellenbergen haben.Alternatively, it is also possible instead of corrugated rollers and arranged behind them Smoothing device to use special corrugated rollers in their troughs have no recesses, so that there the microstructures can be flattened. This can be achieved particularly well if if the corrugated rollers have little play between opposite Have wave valleys and wave crests.
Das erfindungsgemäße Verfahren zum Herstellen eines Metallbleches mit
einer Wellung und einer Mikrostruktur weist die folgenden Schritte auf:
Wie oben erläutert entstehen durch diese Vorgehensweise definierte Mikrostrukturen, welche nach ihrer Entstehung nicht mehr verformt werden und daher sehr definiert und reproduzierbar hergestellt werden können. Zur Vermeidung von Spalten zwischen aneinanderliegenden Blechlagen, die miteinander verlötet werden sollen, können die Mikrostrukturen auf den Wellenbergen auf mindestens einer der beiden Seiten in den Wellwalzen oder in einer anschließenden Glättungseinrichtung flachgedrückt werden.As explained above, this procedure creates defined microstructures, which are no longer deformed after their creation and therefore very well defined and reproducible. For Avoidance of gaps between adjacent sheet metal layers the microstructures can be soldered to one another Wave crests on at least one of the two sides in the corrugated rollers or be flattened in a subsequent smoothing device.
Bevorzugte Ausführungsbeispiele der Erfindung und ihre Vorteile werden im folgenden noch anhand der Zeichnung näher erläutert. Es zeigen:
- Fig. 1
- schematisch eine erfindungsgemäße Wellvorrichtung und
- Fig. 2
- schematisch den erfindungsgemäßen Produktionsablauf
- Fig. 1
- schematically a wave device according to the invention and
- Fig. 2
- schematically the production flow according to the invention
In Fig. 1 ist das Herzstück der vorliegenden Erfindung, nämlich eine Welleinrichtung
für Metallbleche dargestellt. Ein Metallblech 1, was bereits in
einer Einrichtung zur Erzeugung von Mikrostrukturen mit nach unten weisenden
Mikrostrukturen 6 und mit nach oben weisenden Mikrostrukturen 7
versehen wurde, wird einem Paar Wellwalzen 3a, 3b zugeführt. Diese
Wellwalzen weisen an Ihrer Oberfläche Aussparungen 8 auf, die insbesondere
in Form von Nuten ausgeführt sind. Diese Aussparungen 8, von denen
in der Zeichnung nur eine gezeigt ist, nehmen die vorher erzeugten Mikrostrukturen
6, 7 auf, so daß sie beim Wellen des Bleches durch den Wellvorgang
nicht beeinflußt werden. Es entsteht dadurch ein mit einer ersten
Wellhöhe A gewelltes Blech, welches Wellenberge 9, 10 an der Ober- und
Unterseite aufweist. Die Mikrostrukturen 6, 7 sind in ihrer Höhe B wesentlich
kleiner als die erste Wellhöhe A des gewellten Metallbleches 1.In Fig. 1 is the heart of the present invention, namely a shaft device
shown for metal sheets. A
In Fig. 2 ist schematisch der Produktionsablauf für die Herstellung eines
gewellten Bleches mit Mikrostrukturen dargestellt. Das Metallblech 1 läuft
zunächst durch eine Einrichtung 2a, 2b zur Erzeugung der Mikrostruktur,
wie sie aus dem Stand der Technik bekannt ist. Insbesondere kann es sich
um zylindrische Walzen mit entsprechenden Oberflächenstrukturen oder um
einzelne aneinandergereite schmale Scheiben handeln, die durch Kaltverformung
die Mikrostruktur auf das Metallblech 1 aufbringen. Dieses wird
dann einem Paar Wellwalzen 3a, 3b zugeführt, wie sie näher in Fig. 1
dargestellt sind. Für den Fall, daß die Mikrostrukturen auf den Wellenbergen
9, 10 des gewellten Metallbleches 1 unerwünscht sind, können diese
durch Glättungseinrichtungen 4a, 4b bzw. 5a, 5b geglättet werden. Solche
Glättungseinrichtungen bestehen beispielsweise aus einer zylindrischen Walze
4a bzw. 5b mit glatter Oberfläche, die gegen eine Wellwalze 4b bzw. 5a
läuft, wobei diese Wellwalzen vorzugsweise ebensolche Aussparungen aufweisen,
wie die zur Herstellung der Wellung benutzten.In Fig. 2 is the production flow for the manufacture of a schematic
corrugated sheet with microstructures. The
So hergestellte mit Mikrostrukturen versehene gewellte Metallbleche können insbesondere für Wabenkörper in Abgasanlagen Verwendung finden. Sie erhöhen den Wärmeübergang zwischen dem Wabenkörper und einem hindurchströmenden Fluid und beschleunigen Diffusionsvorgänge, was insbesondere für die Effektivität eines katalytischen Konverters von Vorteil ist. Corrugated metal sheets produced in this way with microstructures can are used in particular for honeycomb bodies in exhaust systems. she increase the heat transfer between the honeycomb body and a flowing through Fluid and accelerate diffusion processes, which in particular is advantageous for the effectiveness of a catalytic converter.
- 11
- Metallblechmetal sheet
- 2a,2b2a, 2b
- Einrichtung zur Erzeugung der MikrostrukturDevice for creating the microstructure
- 3a,3b3a, 3b
- Paar WellwalzenPair of corrugated rollers
- 4a,4b4a, 4b
- Glättungseinrichtung untenSmoothing device below
- 5a,5b5a, 5b
- Glättungseinrichtung obenSmoothing device above
- 66
- nach unten vorstehende Mikrostrukturmicrostructure protruding downwards
- 77
- nach oben vorstehende Mikrostrukturmicrostructure above
- 88th
- Aussparung, Nut in der WellwalzeRecess, groove in the corrugated roller
- 99
- Wellenkamm untenWave crest below
- 1010th
- Wellenkamm obenWave crest above
- AA
- Amplitude der WellungAmplitude of the corrugation
Claims (10)
- Apparatus for producing a metal sheet (1) having a corrugation which has a first predetermined corrugation height (A), wherein the sheet (1) has transversely or at an angle to the corrugation a microstructure (6, 7) with a second substantially smaller corrugation height (B), wherein the apparatus has a device (2a, 2b) for producing the microstructure (6, 7) and a pair of corrugating rollers (3a, 3b) which mesh with each other and which are arranged downstream of the device (2a, 2b) for producing the microstructure, characterised in that the corrugating rollers (3a, 3b) have at their outside surfaces recesses (8) which are suitably arranged and are sufficiently large for receiving the microstructures (6, 7) so that in the operation of corrugating the metal sheet (1) the microstructures (6, 7) are not deformed by the corrugating rollers (3a, 3b).
- Apparatus according to claim 1 characterised in that the corrugating rollers (3a, 3b) have a tooth arrangement similar to an involute tooth arrangement.
- Apparatus according to claim 1 or claim 2 characterised in that the corrugating rollers (3a, 3b) have as recesses grooves (8) which extend in the peripheral direction or inclinedly with respect thereto and which correspond in their width and depth at least to the width and height respectively of the microstructures (6, 7).
- Apparatus according to claim 1, claim 2, or claim 3 characterised in that the device (2a, 2b) for producing the microstructure and the corrugating rollers (3a, 3b) are adjustable relative to each other in such a way that the microstructures produced (6, 7) always go into recesses (8) in the corrugating rollers (3a, 3b).
- Apparatus according to one of the preceding claims characterised in that arranged downstream of the corrugating rollers (3a, 3b) is at least one smoothing device (4a, 4b; 5a, 5b) which can press the microstructures on the corrugation peaks (9, 10) of the corrugated metal sheet (1) flat again at one or both sides.
- Apparatus according to claim 5 characterised in that the smoothing device has a corrugating roller (4b; 5a) with recesses and a flat roller (4a; 5b) which runs thereagainst.
- Apparatus according to one of claims 1 to 4 characterised in that the corrugating rollers (3a, 3b) do not have any recesses (8) in their corrugation troughs so that there the microstructures (6, 7) can be pressed flat.
- Apparatus according to claim 7 characterised in that the corrugating rollers (3a, 3b) have a small clearance between oppositely disposed corrugation troughs and corrugation peaks.
- A process for producing a metal sheet (1) having a corrugation which has a first predetermined corrugation height (A), wherein the metal sheet (1) has transversely or at an angle to the corrugation a microstructure (6, 7) with a second substantially smaller corrugation height (B), comprising the following process steps:characterised in that the corrugating rollers (3a, 3b) have recesses (8) which are arranged in the correct position in relation to the microstructures (6, 7) for receiving the microstructures (6, 7), so that corrugating of the sheet strip (1) is effected without pressing the microstructures (6, 7) flat.producing the microstructure (6, 7) in an initially uncorrugated metal sheet (1);feeding the metal sheet (1) to a pair of corrugating rollers (3a, 3b) which mesh with each other, andcorrugating the sheet strip (1),
- A process according to claim 9 characterised in that an operation of pressing the microstructures (6, 7) flat is then effected on the corrugation peaks (9, 10) on at least one of the two sides of the metal sheet (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19636367A DE19636367A1 (en) | 1996-09-06 | 1996-09-06 | Method and devices for producing a metal sheet with a corrugation and a transverse microstructure |
| DE19636367 | 1996-09-06 | ||
| PCT/EP1997/004469 WO1998009745A1 (en) | 1996-09-06 | 1997-08-14 | Method and device for making a metal corrugated sheet provided with a microstructure transverse to the corrugation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0925128A1 EP0925128A1 (en) | 1999-06-30 |
| EP0925128B1 true EP0925128B1 (en) | 2000-11-02 |
Family
ID=7804916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97944760A Expired - Lifetime EP0925128B1 (en) | 1996-09-06 | 1997-08-14 | Method and device for making a metal corrugated sheet provided with a microstructure transverse to the corrugation |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5983692A (en) |
| EP (1) | EP0925128B1 (en) |
| JP (1) | JP2000517245A (en) |
| CN (1) | CN1091011C (en) |
| AU (1) | AU4617197A (en) |
| BR (1) | BR9711702A (en) |
| DE (2) | DE19636367A1 (en) |
| MY (1) | MY115693A (en) |
| RU (1) | RU2201309C2 (en) |
| TW (1) | TW385262B (en) |
| WO (1) | WO1998009745A1 (en) |
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| IT1283468B1 (en) * | 1996-07-19 | 1998-04-21 | Alcan Alluminio S P A | LAMINATE FOR THE CONSTRUCTION OF HEAT EXCHANGERS AND RELATED PRODUCTION METHOD |
| DE19641049A1 (en) * | 1996-10-04 | 1998-04-09 | Emitec Emissionstechnologie | Honeycomb body with thermal insulation, preferably for a catalytic converter |
| DE19912698A1 (en) * | 1999-03-20 | 2000-09-21 | Manfred Gehring | Device and method for producing a ridge and ridge covering strip from a strip made of plastically deformable material |
| DE19924596C2 (en) * | 1999-05-28 | 2001-05-17 | Karlsruhe Forschzent | Process for the production of a microstructure apparatus |
| DE19948087B4 (en) * | 1999-10-06 | 2008-04-17 | Evotec Ag | Process for the preparation of a reaction substrate |
| SE0000429L (en) * | 2000-02-11 | 2000-11-27 | Sven Melker Nilsson | Method of folding metal foil and foil packages of such foil |
| US9886309B2 (en) | 2002-06-28 | 2018-02-06 | Microsoft Technology Licensing, Llc | Identity-based distributed computing for device resources |
| DE10304814C5 (en) * | 2003-02-06 | 2009-07-02 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Method and tool for producing structured sheet metal layers; The catalyst support body |
| US7758487B2 (en) * | 2003-02-24 | 2010-07-20 | Rutgers, The State University Of New Jersey | Technology for continuous folding of sheet materials into a honeycomb-like configuration |
| US7115089B2 (en) * | 2003-02-24 | 2006-10-03 | Rutgers, The State University Of New Jersey | Technology for continuous folding of sheet materials |
| DE10327455A1 (en) * | 2003-06-18 | 2005-01-05 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Method and device for producing a structured sheet-metal strip |
| US20060040242A1 (en) * | 2003-07-09 | 2006-02-23 | Literacy S.T.A.R. | System and method for teaching reading and writing |
| JP2005193243A (en) * | 2003-12-26 | 2005-07-21 | Toyota Auto Body Co Ltd | Corrugating apparatus, corrugating method, and metallic separator for fuel cell formed by corrugating method |
| CN101225692B (en) * | 2007-01-15 | 2011-02-02 | 梁志方 | Metal plate processing mould having emboss |
| US20090250201A1 (en) * | 2008-04-02 | 2009-10-08 | Grippe Frank M | Heat exchanger having a contoured insert and method of assembling the same |
| FR2927829B1 (en) * | 2008-02-27 | 2010-06-04 | Valeo Systemes Thermiques | METHOD OF MANUFACTURING A FIN AND DEVICE FOR IMPLEMENTING SUCH A METHOD |
| CN101306444B (en) * | 2008-06-23 | 2010-10-13 | 上海锅炉厂有限公司 | Process for rolling simultaneously heat transmission elements with two or three kinds of ripples |
| KR20110083649A (en) * | 2008-10-10 | 2011-07-20 | 토소우 에스엠디, 인크 | Circular groove pressing mechanism and method for sputtering target manufacturing |
| CN101829718B (en) * | 2010-05-21 | 2012-07-04 | 深圳市金洲精工科技股份有限公司 | Rolling forming device and rolling forming method of corrugated steel metal part |
| CN102527798A (en) * | 2011-12-23 | 2012-07-04 | 浙江天泽环境科技有限公司 | Forming device of corrugated ribbon of metal carrier |
| CN103104676B (en) * | 2013-01-24 | 2016-03-23 | 甘肃建投装备制造有限公司 | Arc-shaped rack and processing technology thereof and circle-arc tooth forming unit |
| CN103111502A (en) * | 2013-03-11 | 2013-05-22 | 吉林大学 | Microstructure surface plastic forming combination roller |
| CN103230971B (en) * | 2013-03-28 | 2014-10-29 | 广东省蚕业技术推广中心 | Machine tool used for producing cocooning frame and cocooning frame production method thereof |
| JP6016711B2 (en) * | 2013-05-31 | 2016-10-26 | カルソニックカンセイ株式会社 | Fin manufacturing method and fin |
| CN103341540B (en) * | 2013-07-18 | 2014-10-29 | 吉林大学 | Microstructure surface rolling forming device and method |
| CN103962800A (en) * | 2014-04-02 | 2014-08-06 | 浙江天泽环境科技有限公司 | Manufacturing process of particle collecting structure |
| CN105397177B (en) * | 2014-08-06 | 2017-11-24 | 安徽省芜湖仪器仪表研究所 | Ensure half honeycomb strip shaping, the assembly method of cutting machine of forced convection even flow field |
| KR101714203B1 (en) | 2015-09-02 | 2017-03-09 | 현대자동차주식회사 | Sheet metal for reinforcing strength |
| CN105773028B (en) * | 2016-02-15 | 2017-06-16 | 无锡洲翔成套焊接设备有限公司 | The vertical machine wave webs centering clamping device of group |
| CN105618479B (en) * | 2016-03-28 | 2017-11-28 | 太原科技大学 | A kind of method of herringbone corrugating roll Rolling compund strip |
| DE102016108177B4 (en) * | 2016-05-03 | 2019-05-23 | Scherdel Innotec Forschungs- Und Entwicklungs-Gmbh | Round screen and manufacturing device for this |
| CN108691178B (en) * | 2017-03-31 | 2022-04-08 | Bsh家用电器有限公司 | Household appliance comprising at least one metal component |
| CN112676770B (en) * | 2020-10-30 | 2022-04-19 | 厦门大学 | Laser-induced multi-scale micro-channel self-assembly forming processing method |
| CN113245415A (en) * | 2021-06-29 | 2021-08-13 | 苏州大学 | Current auxiliary roll bending forming device and method for ultrathin-wall corrugated plate |
| CN114273480B (en) * | 2021-12-31 | 2023-09-01 | 哈尔滨工业大学 | Rolling forming method for plate surface microstructure |
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| US1449596A (en) * | 1920-07-08 | 1923-03-27 | Samuel Schniper | Machine for making radiator-core sections |
| US2241146A (en) * | 1937-04-14 | 1941-05-06 | Andrews Steel Company | Machine for manufacturing sheet metal surfacing units |
| US3998600A (en) * | 1975-06-16 | 1976-12-21 | Wallis Bernard J | Heat exchanger strip and method and apparatus for forming same |
| GB2074916B (en) * | 1980-05-09 | 1983-09-07 | Sumitomo Metal Ind | Method for producing i-beam having centrally corrugated web |
| US4888972A (en) * | 1988-07-01 | 1989-12-26 | Pronto Auto Repair Dealerships Inc. | Process and apparatus for the manufacture of radiator cooling fins |
| DE8900467U1 (en) * | 1989-01-17 | 1990-05-17 | Emitec Emissionstechnologie | |
| DE4137329A1 (en) * | 1991-11-13 | 1993-05-19 | Vaw Ver Aluminium Werke Ag | DEVICE FOR BENDING KEYSTONE SHEETS |
| BR9509031A (en) | 1994-09-26 | 1998-06-23 | Emitec Emissionstechnologie | Microstructures in cross arrangement |
-
1996
- 1996-09-06 DE DE19636367A patent/DE19636367A1/en not_active Ceased
-
1997
- 1997-08-14 RU RU99106527/02A patent/RU2201309C2/en not_active IP Right Cessation
- 1997-08-14 DE DE59702576T patent/DE59702576D1/en not_active Expired - Lifetime
- 1997-08-14 CN CN97197700A patent/CN1091011C/en not_active Expired - Lifetime
- 1997-08-14 BR BR9711702A patent/BR9711702A/en not_active IP Right Cessation
- 1997-08-14 JP JP10512165A patent/JP2000517245A/en active Pending
- 1997-08-14 EP EP97944760A patent/EP0925128B1/en not_active Expired - Lifetime
- 1997-08-14 WO PCT/EP1997/004469 patent/WO1998009745A1/en active IP Right Grant
- 1997-08-14 AU AU46171/97A patent/AU4617197A/en not_active Abandoned
- 1997-09-05 MY MYPI97004121A patent/MY115693A/en unknown
- 1997-09-05 TW TW086112829A patent/TW385262B/en not_active IP Right Cessation
-
1999
- 1999-03-08 US US09/264,275 patent/US5983692A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0925128A1 (en) | 1999-06-30 |
| BR9711702A (en) | 1999-08-24 |
| CN1091011C (en) | 2002-09-18 |
| DE19636367A1 (en) | 1998-03-12 |
| US5983692A (en) | 1999-11-16 |
| JP2000517245A (en) | 2000-12-26 |
| AU4617197A (en) | 1998-03-26 |
| RU2201309C2 (en) | 2003-03-27 |
| WO1998009745A1 (en) | 1998-03-12 |
| MY115693A (en) | 2003-08-30 |
| TW385262B (en) | 2000-03-21 |
| DE59702576D1 (en) | 2000-12-07 |
| CN1229371A (en) | 1999-09-22 |
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