WO2006012807A1 - Procede de production d'un materiau composite sous forme de bande pour produire des paliers lisses et dispositif pour mettre ledit procede en oeuvre - Google Patents

Procede de production d'un materiau composite sous forme de bande pour produire des paliers lisses et dispositif pour mettre ledit procede en oeuvre Download PDF

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Publication number
WO2006012807A1
WO2006012807A1 PCT/DE2004/001660 DE2004001660W WO2006012807A1 WO 2006012807 A1 WO2006012807 A1 WO 2006012807A1 DE 2004001660 W DE2004001660 W DE 2004001660W WO 2006012807 A1 WO2006012807 A1 WO 2006012807A1
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WO
WIPO (PCT)
Prior art keywords
substrate
band
shaped
liquid
station
Prior art date
Application number
PCT/DE2004/001660
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German (de)
English (en)
Inventor
Peter Busse
Frank Grote
Gerd Andler
Original Assignee
Federal-Mogul Wiesbaden Gmbh & Co.Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Federal-Mogul Wiesbaden Gmbh & Co.Kg filed Critical Federal-Mogul Wiesbaden Gmbh & Co.Kg
Priority to PCT/DE2004/001660 priority Critical patent/WO2006012807A1/fr
Publication of WO2006012807A1 publication Critical patent/WO2006012807A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C6/00—Coating by casting molten material on the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product

Definitions

  • the invention relates to a method for producing a band-shaped composite material for slide bearing production by continuously pouring a liquid onto a belt-shaped, serving as a substrate substrate, in particular steel, in which the band-shaped substrate continuously passes through a plurality of processing stations production line, wherein the band-shaped substrate initially in a separate heating station is preheated, then passes through a casting station, in which it is doused with the liquid, and is subsequently cooled in a cooling station.
  • the invention relates to an apparatus for producing a band-shaped composite material for slide bearing production by means of a continuous pouring a liquid on a band-shaped, serving as a substrate substrate, with a plurality of processing stations, which continuously passes through the band-shaped substrate, wherein the device is equipped with a separate heating station in which the belt-shaped substrate is first preheated, with a casting station in which the substrate is doused with the liquid, and a cooling station in which the substrate coated with the liquid is cooled.
  • DE-AS 1 063 343 A method of the generic type is described in the German patent DE-AS 1 063 343, which has a special design of the muffle furnace, with which the strip-shaped substrate is preheated, the subject.
  • DE-AS 1 063 343 teaches that a faster preheating of the substrate, thus a shortening of the warm-up and thus reducing the required for the transport, acting on the substrate tensile forces can be realized when the substrate while passing through the inductively heated, gas-tight Mühluffel addition to the indirect heating by radiant heat additionally Induction is heated by means of an additional induction field, a current is generated in the substrate, which converts directly into heat.
  • the muffle furnace is equipped with a muffle body of highly heat-resistant, non-magnetic material, a thermal insulation, for example of firebricks, and a water-cooled induction coil.
  • the muffle furnace described in DE-AS 1 063 343 is - now as a free state of the art - the preferred preheating in the process in question, wherein the heating is advantageously carried out under a protective gas atmosphere, so that the steel used does not oxidize.
  • DE-AS 1 063 343 is based on a method in which the strip-shaped substrate is first preheated in a separate heating station, then passes through a casting station, in which it is doused with the metal alloy, and subsequently in a cooling station is cooled.
  • a device of the generic type is used.
  • a layer composite material such as, for example, a substrate coated with a sliding bearing material, preferably of steel
  • a layer composite material such as, for example, a substrate coated with a sliding bearing material, preferably of steel
  • a subsequent to the plating heat treatment is intended as a result of diffusion processes, the bond strength between steel and Increase stock material.
  • This composite system unlike the claimed process, is a roll-plating process. In this case occurs as a result of rolling pressure, a mechanical adhesion by intermeshing the surfaces of the two materials.
  • a method of the generic type is also described in the German patent application DE 198 01 074 A1.
  • the support material is preheated to a temperature of 1000 to 1100 0 C, and then with a bearing alloy on copper-zinc or copper-aluminum base, which has a temperature of 1000 0 C to 1250 0 C, to be doused. Subsequently, the layer composite material is cooled within 2 to 4 minutes of casting temperature to 100 0 C.
  • the band-shaped substrate is usually stored on rollers, wherein the device for producing the band-shaped composite material is supplied by unwinding the rollers continuously with the band-shaped carrier material.
  • a welding device is provided which connects the end of the carrier tape of a roll with the beginning of the tape of a following role to some extent to an endless belt, wherein a built-up of several rolls device ensures that the preheating and the subsequent processing stations continue to be supplied with carrier material during the bonding process in the welding device, so that no downtime occurs.
  • the rollers are moved in such a way that the path of the guided around the rollers carrier tape shortened by the roll mill and the liberated thereby length of carrier tape for the supply of the system during the welding process can be used.
  • the carrier tape in conventional methods prior to heating of the substrate processing stations are provided, in which on the one hand pretreated the carrier tape, in particular cleaned, degreased and roughened to better adhesion of the sliding layer can be.
  • the carrier tape is usually provided in the conventional method at its edges with a flange.
  • This curl serves to laterally limit the carrier tape and to prevent the infused metal alloy from flowing beyond the edges of the substrate.
  • it is also an object of the curling to contribute to the formation of a uniform sliding layer thickness.
  • the flange which is introduced for manufacturing reasons to improve the Aufgit worthlui in the carrier tape must be removed prior to processing of the composite material to plain bearings, bushes and bearings. In this case, the flange can claim in a band with a width of 150 mm up to 30% of the carrier tape, resulting in correspondingly high amounts of waste material.
  • the metal alloy is applied in the casting station in the middle of the substrate and spreads from the center in a flow process to the side edges of the carrier tape out.
  • This flow process has significant Influence on the feed rate at which the substrate can be conveyed through the plant, as the melt must be allowed enough time to spread evenly across the substrate to the edges before the cooling process can follow.
  • the feed rate has a direct influence on the productivity of the manufacturing process, which is why in the further development of the process, the efforts should basically go to increase the feed rate and thus to produce more cost-effective.
  • it is possible to realize belt speeds of a maximum of VB 3.5 m / min.
  • the composite material is mechanically reworked in conventional methods in such a way that, on the one hand, the underside of the substrate is ground and the upper side of the sliding layer is milled.
  • the grinding of the underside of the substrate is primarily used for cleaning and removal of Residues due to oil cooling, whereas the milling of the upper side of the sliding layer has the aim to remove excess sliding layer material and bring the thickness of the sliding layer closer to its nominal size. If a usual sliding layer thickness of the finished composite of 0.35 mm ⁇ 0.15 mm is used as the basis, the sliding layer thickness of the coated substrate after cooling and before the post-processing in the conventional methods is about 2 mm.
  • the band-shaped composite material passes through so-called temper rolling, with which the plain bearing layer is further smoothed by hot rolling.
  • temper rolling Depending on the metal alloy used, an existing flange is either previously separated from the composite material or left on the composite tape for metal alloys where there is a risk of the coils sticking and sticking together during winding.
  • a layer composite material in the form of a cast-plated steel strip is known. In order to bring the layer composite material to its final size, 5 to 15% of the bearing metal thickness is milled off.
  • DE 196 51 324 A1 describes a method for producing coated continuous casting products. A liquid molten metal, z. As steel, with a metal flat product, for. B. also made of steel, brought into contact and welded. As an advantage of this method, the arbitrary final and coating thickness is called.
  • WO 95/17987 discloses a method by means of which a metal strip close to the final dimensions is produced on a conveyor belt. What is understood near the final dimensions, is not communicated.
  • DE-OS 21 30 421 describes a method and an apparatus for producing metallic composite materials. Two liquid metals are simultaneously passed to a sputtering device to form a fine spray of atomized particles of the metals. For spraying nitrogen jets are used.
  • the object of the present invention to provide a method for producing a band-shaped composite material for slide bearing production by continuous casting of a metal alloy on a band-shaped, serving as a substrate substrate, in particular steel, in which the band-shaped substrate comprising a plurality of processing stations Run continuously through the production line, wherein the band-shaped substrate is first preheated in a separate heating station, then passes through a casting station, in which it is watered with the metal alloy, and is subsequently cooled in a cooling station, and can be manufactured with the cost and in particular a higher Productivity than conventional methods.
  • Another object of the present invention is to provide an apparatus for carrying out the method.
  • the first sub-task is solved by a method according to a first alternative, which is characterized in that the liquid with which a sliding bearing layer is formed, is applied in the casting station at least two perpendicular to the direction of movement of the band-shaped substrate locations on the substrate the liquid is poured in an amount such that its thickness has at most an excess ⁇ 30%, in particular ⁇ 20%, in comparison to the finished plain bearing layer of the band-shaped composite material.
  • the method according to the invention is characterized in that the liquid is poured into a thin layer compared to conventional methods.
  • a layer thickness of the sliding layer is already aimed at the pouring of the sliding layer alloy, which has a slight oversize relative to the plain bearing layer of the finished, band-shaped composite material, that is already as close as possible to the nominal size of the plain bearing layer.
  • Embodiments of the method are advantageous in which no material is removed from the sliding layer generated by the pouring process and the band-shaped composite material for smoothing the surface passes through only a device with temper rolling.
  • the potted liquid can distribute faster than in conventional methods in which the melt is centrally applied to the substrate, because reduces the distances that the melt has to travel back to the side edges of the carrier tape, and thus reduces the time required for the flow process, ie the wetting of the substrate surface.
  • the feed rate at which the substrate belt is pulled through the system can be increased and thus produced more cheaply.
  • This concrete embodiment of the method thus contributes significantly to the solution of the problem underlying the invention to provide a method with which can be manufactured more cheaply and in particular has a higher productivity than conventional methods.
  • Advantageous embodiments of the method are those in which a flow is used in the casting station, which has at least two mutually spaced outlet openings, via which the liquid is in each case radially applied to the substrate.
  • the flow is preferably positioned in such a way that the outlet openings come to lie less than 50 mm above the substrate surface to be wetted, whereby unwanted turbulence of the potted melt is avoided or kept within reasonable limits.
  • the turbulence of the melt flow generated by the pouring has an influence on the quality of the formed sliding layer and on its surface texture. The less turbulent the flow, the less the thickness of the sliding layer varies, that is, the more uniformly a sliding layer can be formed, which has a positive effect on the excess amount of metal alloy to be cast when casting the substrate and reduces post-processing.
  • the first sub-task is solved by a method according to a second alternative, which is characterized in that in the casting station, a flow is used, which has at least one slit-shaped outlet opening, via which the liquid is applied in the form of a melt film on the substrate, and in that the liquid with which a sliding bearing layer is formed is cast in an amount such that its thickness has at most an excess of ⁇ 30%, in particular ⁇ 20%, compared to the finished plain bearing layer of the band-shaped composite material.
  • This design of the flowmeter is similar to a flowmeter having a plurality of spaced apart orifices which, so to speak, communicate with one another.
  • a flow in which in the casting station, a flow is used, which has a slit-shaped outlet opening which extends over the entire width of the substrate to be watered, so that the liquid in the form of the width of the band-shaped substrate corresponding melt film is applied to the substrate.
  • the liquid with which a sliding bearing layer is formed is poured in an amount such that its thickness has at most an excess ⁇ 10% compared to the finished plain bearing layer of the band-shaped composite material.
  • Embodiments of the method in which the substrate is conveyed at a belt speed v B > 5 m / min, preferably at a belt speed VB> 7 m / min, are advantageous. This represents an increase in the belt speed and consequently also in the productivity of up to 100% and more compared to the prior art, wherein the tensile forces occurring in the steel belt do not exceed an acceptable size.
  • Embodiments of the method in which water is used as the coolant in the cooling station are advantageous.
  • the easy availability, the low cost and the environmental compatibility of water cause water is preferably used as a coolant.
  • oil is predominantly used as the coolant, since leaded bearing alloys require rapid cooling and thus a coolant with high heat capacity.
  • efforts are being made to remove lead from the recycling chain of scrap metal, with disassembly of, for example, the internal combustion engine for recycling the disposal of the lead-containing parts from an economic point of view is not effective, so that only the use of lead-free components in manufacturing offers a solution.
  • the health burden of workers with lead dust during production is a reason to refrain from lead in the production of bearings.
  • lead-containing bearing alloys can be cooled when using the method according to the invention with water, since only thin layers are cast and thus - in comparison to the methods known in the prior art - much less material mass must be cooled, for which in certain applications, the heat capacity of Water is considered sufficient.
  • Embodiments of the method in which the cooling station having a multiplicity of boundary walls is cooled by means of water are advantageous in that the heat is dissipated from the boundary walls by convection to the water, the cooling of the molded substrate via heat emission by thermal radiation to the boundary walls the cooling station takes place.
  • the potted substrate itself does not come into contact with the coolant.
  • the coolant cools the composite indirectly, by the substrate and the cast on it sliding layer release heat by thermal radiation to the boundary walls of the cooling station and then this boundary walls in turn by heat to the Coolant to be cooled.
  • the method according to the invention are cast with the thin sliding layers, it is advantageous not to apply directly to the underside of the substrate with a coolant jet and thus run the risk that the sliding layer deforms subsequently as a result of this force.
  • Embodiments of the method in which side delimiters are used in the casting station which delimit the band-shaped substrate laterally such that the cast-on metal alloy can not leave the substrate laterally are advantageous. This eliminates the provided according to the prior art flanging and thus with the flanging the device for introducing the curl into the substrate and also the device for separating the flange after production. Furthermore, the use of separate and external Sobeskyr to a considerable material savings and thus to a cost reduction, which also contributes to the solution of the problem underlying the invention.
  • Embodiments of the method in which a belt moving along with the substrate is used in the casting station as a side limiter are advantageous, with an endless belt or a disposable belt preferably being used as the belt.
  • coils or rollers are used to guide the band-shaped sobegrenzers, wherein on each side of the substrate, two coils are provided, one of which is positioned in front of the casting station and the other behind the cooling device.
  • the coils can also be used simultaneously as a drive, wherein the band advantageously moves at the same speed as the substrate.
  • the second sub-task to provide a device for carrying out the method according to the invention is achieved by a device having a plurality of processing stations, which continuously passes through the strip-shaped substrate, wherein the device is equipped with a separate heating station, in which the strip-shaped substrate is first preheated, with a casting station, in which the substrate is doused with the liquid, and a cooling station, in which the substrate coated with the liquid is cooled, and which is characterized in that the casting station is equipped with a flow, whose at least two outlet openings are formed in the manner in that the liquid can be applied to the substrate at at least two locations spaced at right angles to the direction of movement of the band-shaped substrate.
  • the potted liquid is distributed faster than in conventional methods in which the melt is applied centrally to the substrate, since the distances covered by the melt has to travel back to the side edges of the carrier tape, is reduced. As a result, the feed rate with which the substrate strip is pulled through the system is increased and thus can be produced more cheaply.
  • Embodiments are advantageous in which the flow has at least two outlet openings spaced apart from one another, via which the liquid is in each case applied in a radial manner onto the substrate.
  • these outlet openings are spaced by half the width of the substrate strip, so that the maximum flow path of the melt is reduced to one quarter of the substrate width. It should also be noted at this point that the melt does not flow out of the feed device due to the substrate strip moving relative to the flow is pulled, but the melt is specifically promoted by setting an overpressure and potted.
  • a device which is characterized in that the casting station is equipped with a flow which has at least one slit-shaped outlet opening, via which the liquid in the form of a melt film can be applied to the substrate.
  • Embodiments are advantageous in which the flow has a gap-shaped outlet opening which extends over the entire width of the substrate to be embossed, so that the liquid in the form of a melt film corresponding to the width of the strip-shaped substrate can be applied to the substrate. Due to this special design of the flow, the paths to be covered by the liquid are further shortened.
  • Embodiments in which the cooling station is equipped with water cooling are advantageous, the heat being emitted by the coated strip via radiation. Water is already a preferred coolant for ecological reasons.
  • the cooling station for cooling the substrate is equipped with a device with which the underside of the substrate with a protective gas, preferably with a hydrogen-nitrogen mixture, is sprayed. This additional convection cooling is particularly advantageous for achieving high cooling rates.
  • cooling station is equipped with oil cooling
  • the cooling station is equipped for cooling the substrate with a device with which the bottom of the substrate is sprayed with oil.
  • oil is the preferred cooling fluid with its higher heat capacity compared to water.
  • Advantageous embodiments are those in which the casting station is equipped with side delimiters which limit the band-shaped substrate laterally in such a way that the cast-on metal alloy can not leave the substrate laterally.
  • side delimiters which limit the band-shaped substrate laterally in such a way that the cast-on metal alloy can not leave the substrate laterally.
  • the side limiter comprises a belt which moves along with the substrate
  • the belt can be an endless belt or a disposable belt.
  • a shield can be used as a side limiter.
  • elastic side limiters are provided to compensate for the tolerances of the bandwidth.
  • Embodiments of the method in which a ceramic, elastic band is used as the band are advantageous. Because of its high temperature resistance, its corrosion resistance, its poor wettability ie low tendency to stick with liquid metal and its chemical resistance, ceramic is particularly suitable as a material in the present application. Carbides such as SiC and B 4 C, oxides such as Al 2 O 3 , BeO and ZrO 2 , nitrides such as AIN, BN and Si 3 N 4 , or borides such as TiB 2 can be used as ceramic materials. In addition, the abrasion resistance of ceramic proves to be advantageous in that the melt is not contaminated by abraded strip material.
  • it is a band constructed of fibers, in which the ceramic is introduced in the form of fibers in a fibrous support material, for example titanium.
  • a fibrous support material for example titanium.
  • Such bands can be used at temperatures up to 1300 0 C.
  • the Sobeskyr is a sign.
  • This shield is then brought about holders on the sides of the carrier tape to the plant, where it serves as Sobeskyr during the Aufg cashreaes and the cooling process at least until the cooling of the metal alloy under liquidus temperature.
  • FIG. 1 is a schematic representation of an embodiment of an apparatus for producing a band-shaped composite material, in side view,
  • Fig.2b is a schematic representation of a second
  • 3a shows a schematic representation of a first
  • 3b, 3c are schematic representations of two embodiments of the side boundary in plan view, partially in section,
  • FIG. 3 d shows the side boundary shown in FIG.
  • Figure 1 shows a schematic representation of a first embodiment of an apparatus 1 for producing a band-shaped composite material 4 in the side view.
  • the substrate strip 3 passes through this device 1 from left to right. It is stored on spools or rollers 2 and conveyed by means of drive rollers 20 through the plant 1.
  • a cutting station 7 and a welding station 8 which connects the end of the carrier tape or the Subrats 3 of a roll 2 with the beginning of the belt 3 of a subsequent role 2, so to speak, to an endless belt, wherein a device constructed of a plurality of rollers 9 therefor Ensures that the heating station 12 and the subsequent processing stations 10, 11, 12, 13, 16, 17, 18 and 19 continue to be supplied with carrier material 3 during the bonding process in the welding station 8, so that no downtime occurs.
  • the rollers are moved in such a way that the path of the carrier belt or substrate 3 guided around the rollers is shortened by the roller mechanism 9 and the liberated length of substrate 3 can be used for the supply of the system 1 during the welding operation.
  • the carrier tape or the substrate 3 passes through an array of straightening rollers 10, which bring the substrate 3 stored on the bobbins or rollers 2 into the desired shape for the pouring process.
  • a cleaning station 11 in which the carrier tape or the substrate 3 pretreated, in particular cleaned, degreased and roughened to better adhesion of the sliding layer, is.
  • a device for attaching the flange on the carrier tape or on the substrate 3 is omitted in the embodiment of the device 1 according to the invention shown in FIG. 1, since external side limiters are used.
  • the carrier tape or the substrate 3 opens into the casting chamber 15.
  • the superheated metal alloy 5 which has approximately the same temperature as the preheated substrate 3, applied by means of a flow 14 on this.
  • the metal alloy 5 spreads from the application sites in which it was applied to the substrate in a flow process to the side edges of the carrier tape or the substrate 3 back out.
  • This flow process has a significant influence on the feed rate at which the substrate 3 can be conveyed through the plant 1, because the melt must be allowed sufficient time to distribute evenly over the substrate 3 to the edges before the cooling process follows.
  • the feed rate has an immediate impact on the productivity of the manufacturing process.
  • the carrier strip or the substrate 3 with the metal alloy 5 cast on it passes through the cooling station 16, a finishing station 17 in which, for example, a cleaning takes place, and a device with tempering rollers 18, in which the sliding layer 6 of the produced Composite 4 is smoothed to be rewound at the end of the production line again on a spool or roll 2 and stored.
  • the endlessly produced composite material 4 is cut to length by means of cutting station 19 in accordance with the desired size of the rollers 2.
  • FIG. 2 a schematically shows a first embodiment of a flowmeter 14 in a perspective view.
  • the flower 14 is supplied by means of a feed channel 22 from the feeder device 21 with a superheated metal alloy 5.
  • the feed channel 22 opens centrally in the flow head 23.
  • the molten metal which propagates in the interior of the flow 14 over the entire width of the flow head 23 is radiantly applied to the substrate 3 via a total of eleven outlet openings 24.
  • the outlet openings 24 are regularly spaced from each other and positioned on the end face 26 of the flow 14.
  • the flower 14 is preferably positioned in such a way that the outlet openings 24 come to lie less than 50 mm above the surface to be wetted of the substrate 3, whereby unwanted turbulence of the potted melt is avoided or kept within reasonable limits.
  • a so-called comb 25 is provided on the end face 26 in order to forward the emerging from the outlet openings 24 melt flow on. This has proven to be advantageous in the formation of a uniform sliding layer.
  • the flow element 14 can also be heated directly in order to avoid cooling of the melt and clogging of the outlet openings 24.
  • FIG. 2b schematically shows a second advantageous embodiment of a flowmeter 14 in a perspective illustration.
  • This flower 14 is provided with a slit-shaped outlet openings 24, via which the molten metal alloy in the form of a melt film is applied to the substrate 3.
  • the gap-shaped outlet opening 24 extends over the entire width of the substrate 3 to be coated so that the molten metal alloy 5 in the form of a melt film corresponding to the width of the band-shaped substrate 3 is applied to the substrate.
  • FIG. 3 a shows a schematic representation of a first embodiment of a side boundary 27 in a side view, partially cut away.
  • the flower 14 positioned in the casting chamber 15 is supplied with superheated molten metal 5 from the feeder device 21 via the feed channel 22 and carries the molten alloy 5 onto the strip-shaped substrate 3 via a gap-shaped outlet opening 24.
  • external side delimiters 27 are used, which limit the band-shaped substrate 3 laterally in such a way that the cast-metal alloy 5 can not leave the substrate 3 laterally beyond the edges.
  • belts 28, 29 are used as the side boundary 27, as can be easily seen from Figures 3b and 3c, which shows the side boundary shown in Figure 3a in plan view.
  • Figure 3b shows both the embodiment in which an endless belt 29 is used as a band-shaped side limiter 27
  • Figure 3c shows the embodiment in which a disposable belt 28 serves as a band-shaped side limiter 27.
  • coils 31 or rollers 31 a are used, wherein on each side of the substrate 3, two coils 31 and rollers 31 a are provided, one of which is positioned in front of the casting station 13 and the other behind the cooling device.
  • the reels 31 and rollers 31a can also be used simultaneously as a drive, wherein the belt 28, 29 advantageously moves at the same speed as the substrate 3.
  • Embodiments of the method in which a ceramic, elastic band is used as the band are advantageous. Because of its high temperature strength, its corrosion resistance, its poor wettability i. low adhesion with liquid metal and its chemical resistance, ceramics is particularly suitable as a material in the present application.
  • it is a band constructed of fibers, in which the ceramic is introduced in the form of fibers in a flexible carrier material, for example titanium.
  • a flexible carrier material for example titanium.
  • Such bands can be used at temperatures up to 1300 0 C.
  • the guide of the band-shaped side delimiter 27 adopts a side guide mechanism 30, as shown in FIG Figure 3a shown side boundary 30 in cross section.
  • the side guide mechanism 30 leads the band 28, 29 laterally to the edges of the substrate strip.
  • the side guide mechanism 30 also serves to bring the bands 28, 29 in the required height at the edges of the substrate 3 for conditioning and hold.
  • Figure 4 shows a schematic representation of a second embodiment of the side boundary 27 in cross section.
  • a shield 32 is used as a side delimiter 27 .
  • the side guide mechanism 30 and the rollers 31, the coils 31a together with the side delimiters 27 and the belts 28 and 29 are omitted.
  • the shields 32 are mounted in holders 33 and are moved by means of these holders 33, wherein the guide 34 serves to adjust the pourable width. Similar to the bands, they are brought to the edges of the substrate 3 so that the liquid molten metal 5 can not leave the substrate 3 beyond the edges.
  • the cooling is accomplished in two steps.
  • a first step which connects directly to the casting box, the strip is cooled to about 900 - 950 0 C. At this temperature, the alloy is sufficiently solidified, so that you can remove the Sobeskyr.
  • the strip is then cooled to about 300 0 C.
  • the band is in a protective gas atmosphere of hydrogen 4 - 5 vol .-% in nitrogen. Above all else, the nitrogen is necessary to one To prevent oxidation of the steel strip.
  • the hydrogen has a favorable heat capacity and is increasingly used for cooling.
  • the cooling in the first step takes place in such a way that cooling water is conducted around the strip and in addition blown from below onto the strip, mainly with hydrogen. That is, above the belt is cooled by radiation and below the belt by convection. In the second cooling step, the entire strip is cooled by convection. .
  • the carrier strip or the substrate 3 with the metal alloy 5 cast on it passes through a finishing station 17, in which, for example, a cleaning takes place, and a device with tempering rollers 18, in which the sliding layer of the produced composite material 4 is smoothed, to be rewound and stored again on a spool or reel 2 at the end of the production line.

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  • Laminated Bodies (AREA)

Abstract

L'invention concerne un procédé permettant de produire un matériau composite (4) sous forme de bande pour produire des paliers lisses par coulée continue d'un alliage métallique (5) sur un substrat sous forme de bande (3), servant de matériau support, notamment en acier. Selon ce procédé, le substrat sous forme de bande (3) parcourt en continu une chaîne de fabrication comprenant plusieurs postes de traitement. Le substrat sous forme de bande (3) est tout d'abord préchauffé dans un poste de chauffe (12) séparé, puis traverse un poste de coulée (13), dans lequel il est recouvert, par coulée, de l'alliage métallique (5), avant d'être refroidi dans un poste de refroidissement (16). L'invention concerne en outre un dispositif (1) permettant de mettre ledit procédé en oeuvre. L'invention vise à mettre au point un procédé et un dispositif à l'aide desquels il soit possible de produire de manière plus économique et qui permettent notamment de parvenir à une meilleure productivité que l'état de la technique ne le permet. A cet effet, il est prévu un procédé relevant de l'art générateur de génériques, qui se caractérise en ce que l'alliage métallique (5) est coulé dans une quantité avec laquelle la couche de palier lisse (6) est formée, dont l'épaisseur présente au plus un surplus = 20 %, comparativement à la couche de palier lisse du matériau composite sous forme de bande, à laquelle appliquer un traitement final. Le dispositif se caractérise en ce que le poste de coulée (13) est muni d'un dispositif d'écoulement (14) dont une ouverture de sortie (24) (au moins au nombre de une) se présente de manière que l'alliage métallique (5) puisse être appliqué sur le substrat sous forme de bande (3), en au moins deux points éloignés, perpendiculairement au sens de mouvement du substrat sous forme de bande (3).
PCT/DE2004/001660 2004-07-28 2004-07-28 Procede de production d'un materiau composite sous forme de bande pour produire des paliers lisses et dispositif pour mettre ledit procede en oeuvre WO2006012807A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DE2004/001660 WO2006012807A1 (fr) 2004-07-28 2004-07-28 Procede de production d'un materiau composite sous forme de bande pour produire des paliers lisses et dispositif pour mettre ledit procede en oeuvre

Applications Claiming Priority (1)

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PCT/DE2004/001660 WO2006012807A1 (fr) 2004-07-28 2004-07-28 Procede de production d'un materiau composite sous forme de bande pour produire des paliers lisses et dispositif pour mettre ledit procede en oeuvre

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WO2006012807A1 true WO2006012807A1 (fr) 2006-02-09

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB437199A (en) * 1934-04-23 1935-10-23 Cleveland Graphite Bronze Co Improvements relating to the manufacture of composite metal strips
US2203679A (en) * 1938-12-16 1940-06-11 Cleveland Graphite Bronze Co Method of and apparatus for making bimetallic strip
US3432293A (en) * 1966-01-06 1969-03-11 Glacier Metal Co Ltd Bearing materials and method of making same
US3599705A (en) * 1969-12-09 1971-08-17 Ppg Industries Inc Method of continuously casting a uniform metal film
EP0029471A1 (fr) * 1979-11-27 1981-06-03 BBC Aktiengesellschaft Brown, Boveri & Cie. Procédé de fabrication d'un élément de palier pour un palier à contact lisse de haute conductivité thermique et élément de palier
US4479528A (en) * 1980-05-09 1984-10-30 Allegheny Ludlum Steel Corporation Strip casting apparatus
JPS6268656A (ja) * 1985-09-24 1987-03-28 Mitsubishi Heavy Ind Ltd クラツド材の製造方法
CH666840A5 (de) * 1982-11-12 1988-08-31 Concast Standard Ag Verfahren, vorrichtung und anwendungen des verfahrens zur herstellung eines bandes, einer folie oder einer beschichtung aus metallischem oder metalloxydischem material.
DE4131849C1 (fr) * 1991-09-25 1993-01-28 Access Ev
DE4428741C1 (de) * 1994-08-13 1996-02-22 Glyco Metall Werke Verfahren und Vorrichtung zur Herstellung dünner Schichten aus Flüssigkeiten als Beschichtung oder Folie
WO2002040883A1 (fr) * 2000-11-15 2002-05-23 Federal-Mogul Corporation Alliage de support a base d'aluminium plaque pourvu d'une couche intermediaire amelioree

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB437199A (en) * 1934-04-23 1935-10-23 Cleveland Graphite Bronze Co Improvements relating to the manufacture of composite metal strips
US2203679A (en) * 1938-12-16 1940-06-11 Cleveland Graphite Bronze Co Method of and apparatus for making bimetallic strip
US3432293A (en) * 1966-01-06 1969-03-11 Glacier Metal Co Ltd Bearing materials and method of making same
US3599705A (en) * 1969-12-09 1971-08-17 Ppg Industries Inc Method of continuously casting a uniform metal film
EP0029471A1 (fr) * 1979-11-27 1981-06-03 BBC Aktiengesellschaft Brown, Boveri & Cie. Procédé de fabrication d'un élément de palier pour un palier à contact lisse de haute conductivité thermique et élément de palier
US4479528A (en) * 1980-05-09 1984-10-30 Allegheny Ludlum Steel Corporation Strip casting apparatus
CH666840A5 (de) * 1982-11-12 1988-08-31 Concast Standard Ag Verfahren, vorrichtung und anwendungen des verfahrens zur herstellung eines bandes, einer folie oder einer beschichtung aus metallischem oder metalloxydischem material.
JPS6268656A (ja) * 1985-09-24 1987-03-28 Mitsubishi Heavy Ind Ltd クラツド材の製造方法
DE4131849C1 (fr) * 1991-09-25 1993-01-28 Access Ev
DE4428741C1 (de) * 1994-08-13 1996-02-22 Glyco Metall Werke Verfahren und Vorrichtung zur Herstellung dünner Schichten aus Flüssigkeiten als Beschichtung oder Folie
WO2002040883A1 (fr) * 2000-11-15 2002-05-23 Federal-Mogul Corporation Alliage de support a base d'aluminium plaque pourvu d'une couche intermediaire amelioree

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 266 (M - 620) 28 August 1987 (1987-08-28) *

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