EP2976175A1 - Procédé de fabrication d'une pièce en aluminium plaquée par laminage, pièce en aluminium plaquée par laminage et son utilisation - Google Patents

Procédé de fabrication d'une pièce en aluminium plaquée par laminage, pièce en aluminium plaquée par laminage et son utilisation

Info

Publication number
EP2976175A1
EP2976175A1 EP14710893.0A EP14710893A EP2976175A1 EP 2976175 A1 EP2976175 A1 EP 2976175A1 EP 14710893 A EP14710893 A EP 14710893A EP 2976175 A1 EP2976175 A1 EP 2976175A1
Authority
EP
European Patent Office
Prior art keywords
plating
aluminum workpiece
cladding
layer
groove
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.)
Withdrawn
Application number
EP14710893.0A
Other languages
German (de)
English (en)
Inventor
Manfred Mrotzek
Marcel LANSING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Speira GmbH
Original Assignee
Hydro Aluminium Rolled Products GmbH
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 Hydro Aluminium Rolled Products GmbH filed Critical Hydro Aluminium Rolled Products GmbH
Publication of EP2976175A1 publication Critical patent/EP2976175A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/002—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of light metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0233—Sheets, foils
    • B23K35/0238—Sheets, foils layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0391—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits a single plate being bent to form one or more conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys

Definitions

  • the invention relates to a method for producing a roll-clad aluminum workpiece. Furthermore, the invention relates to a roll-formed aluminum workpiece having an aluminum alloy core and at least one cladding layer of a cladding material on one side of the aluminum workpiece. Finally, the invention also relates to a use of such a roll-plated
  • a plating layer is poured on it directly during casting of a core ingot.
  • Kernbarren is thus directly as a composite material
  • Another way to apply plating layers is to use solder pastes that are applied by machine or manually with cannulas when processing the aluminum strips and sheets.
  • This method has the disadvantage that the carrier substance of the solder paste must be removed without residue before soldering the workpiece,
  • Solder layer thickness can also be controlled only relatively roughly by the amount of paste or by its composition.
  • solder foil Another alternative is the use of a solder foil, which is quite expensive. Furthermore, the solder foil usually has to be applied in a complex manner manually on the workpiece. In addition, the solder foil is only suitable for larger material thicknesses, since the solder foil
  • solder foil otherwise very thin and extremely difficult to process.
  • An application of the solder foil on very small areas is technically difficult to control.
  • a full-surface plating layer is not necessary in many applications and often even disadvantageous.
  • solder layer is required only in certain areas of a component made from a strip or sheet.
  • band and thus also the component made of this for procedural reasons If solder is coated with solder, more solder may accumulate on the soldering parts than is needed for soldering, which may lead to erosions or other undesirable effects. In the case of a full-surface solder coating, it can also lead to unintentional solder joints of two closely
  • solder coatings usually have a less visually attractive surface than unplated surface areas. More specifically, solder coatings of AISi alloys often contain large Si precipitates, which adversely affect the deformation of the tapes, since they can induce cracks and the
  • the present invention the object of an economical method for
  • Another object is to increase the flexibility in designing the plating layers, particularly with respect to different thicknesses or alloy compositions of the plating layers.
  • Inserting the cladding is hot rolled.
  • This process can be roll-plated
  • Cladding layer that extends only over a portion of one side of the aluminum workpiece.
  • the plating layer may be applied in the amount required for soldering the aluminum workpiece, so that excessive solder erosion can be prevented. Furthermore, with this method, a uniform thickness of the plating layer can be achieved since a decreasing plating layer thickness caused by rolling is reduced or even avoided. In this way, the amount of SchopfSchrott can be reduced. Under an aluminum workpiece is present and in the
  • Aluminum sheet understood. Furthermore, the term aluminum workpiece also includes semi-finished products or products produced from such strips or sheets.
  • a core ingot becomes one
  • Aluminum alloy provided. Examples of commonly used aluminum alloys for this purpose are:
  • the core bar can be urformform for example by chill casting.
  • the rolling surfaces of the core billet i. whose top and bottom are prepared for rolling
  • the core billet used in the method preferably has a thickness of 300 to 700 mm and / or a width of 500 to 3000 mm and / or a length of 3000 to 8000 mm.
  • the applied layer is then introduced a groove.
  • the groove can be milled, for example. If the core ingot already has an applied layer, for example a cladding layer, then the groove can also be introduced into this layer. If the depth of the groove exceeds the thickness of the applied layer, the groove may penetrate both the deposited layer and the underlying layer
  • Core bars are introduced.
  • the depth, length and width of the groove is preferably adjusted to the dimensions of the plating piece to be inserted.
  • the groove is introduced in the longitudinal direction of the core bar, that is, the longitudinal extension of the groove preferably extends in
  • the groove can basically have any shape. Under the shape of the groove, the shape of the groove becomes in the plane of the surface of the core bar or the layer applied thereto
  • the groove preferably one.
  • the groove bottom for example, flat and parallel to the surface of the
  • Kernbarrens be formed. However, it can also be oblique, tiered, wavy or otherwise shaped.
  • the groove base is laterally bounded on two opposite sides by a groove wall.
  • the groove may be in a direction of extension, in particular in its
  • the groove preferably extends over the entire length of the core bar. Alternatively, the groove may extend over only a portion of the core bar length.
  • a plating piece is made of a
  • the Plattie piece can be made for example by sawing and / or milling of a plate of cladding material. Such plates can be, for example, by sawing or hot rolling
  • the cladding material is a material that differs from the material of the
  • Kernbarrens in at least one property is different.
  • plating materials are: plating materials such as AISi alloys, especially AA 4045, AA 4047, AA 4343, AA 4004 or AA 4104, anticorrosive plating materials such as AA 1050 or ⁇ A 7072 or plating materials for a better visual appearance such as AA 1050 or ⁇ A 3003.
  • the groove or plating preferably has a width (i.e., an extension in the transverse direction of the core bar) of at least 1 mm, preferably at least 3 mm, more preferably at least 5 mm, in particular at least 10 mm.
  • the width of the groove or the Plattier Cultures is preferably equal to or less than 95 5, preferably less than 90 ' ⁇ , in particular less than 85 1, the
  • the width of the groove or the Plattier Cultures is preferably adapted application specific.
  • the width of the groove or of the plating piece can in particular also amount to a maximum of 80%, a maximum of 70 l, a maximum of 60, a maximum of 50%, a maximum of 40%, a maximum of 30%, a maximum of 20% or even a maximum of only 10% of the core bar width.
  • the groove further preferably has a depth of at least 1 ⁇ , preferably at least 3%, and more preferably of at most 30% of the core bar thickness or the total thickness of core ingot and plated layer.
  • the plating piece preferably has a thickness of at least 1%, preferably of at least 3%, and more preferably a thickness of up to 40% of the core bar thickness or the total thickness of core bars and on a latticed layer.
  • the plating piece in the groove can optionally be against falling off
  • the core billet is hot rolled, for example by clamping, by welding or by an adhesive.
  • the method therefore enables process-reliable partial-area cladding layers to be produced by hot rolling.
  • the cladding piece is clad on the core ingot, ie connected to it in a material, force and / or form-locking manner, so that a roll-coated aluminum workpiece with a partial cladding layer is produced.
  • the hot rolling is preferably carried out to a thickness in the range of 1, 0 mm, preferably from 2.0 mm, to 20 mm, preferably to 10 mm.
  • the plating layers preferably have a thickness in the range of 0.01 mm to 6 mm, preferably up to 3 mm, after hot rolling.
  • the strips may be cold rolled in one or more cold rolling passes to a smaller final thickness, with one or more anneals between them
  • Cold rolling is preferably carried out to a final thickness in the range of 0.05 mm, preferably from 0.5 mm to 20 mm, preferably up to 10 mm, more preferably up to 5 mm, in particular up to 1 mm.
  • the plating layers preferably have a thickness in the range of 0.005 mm to 1 mm, preferably 0 to 5 mm after cold rolling.
  • the bands on the hot rolling and the cold rolling or after cold rolling to final thickness are provided.
  • End width are cut open. For this purpose will be
  • the position of the groove and in the groove preferably first determined the position and width of the cladding layers to take into account when cutting.
  • the position of the groove and in the groove is preferably first determined the position and width of the cladding layers to take into account when cutting.
  • the at least one plating piece has a width equal to or less than 50%, preferably equal to or less than 40%, in particular equal to or less than 25% of the core bar width. Below the width of the plating becomes the maximum extent the PlattierStücks understood transverse to the longitudinal direction of insertion of the core bar.
  • the size and / or arrangement of the plating layer made of the plating piece can be adapted to the particular application of the roll-plated aluminum workpiece produced by this method.
  • a plurality of plating pieces are inserted into the at least one groove or into a plurality of grooves in the method, preferably have a plurality, in particular all of these
  • Plating pieces each have a width equal to or less than 50 ⁇ ; , preferably equal to or less than 40%,
  • Plating piece is preferably adapted to the width of the Plattierwerk Anlagens and in particular has a width of equal to or less than 50%, preferably equal to or less than 40% and in particular equal to or less than 30% of the core bar width.
  • the plating piece consists of a solder alloy, preferably of an alloy of the type A ⁇ 4xxx. This way you can
  • roller-clad aluminum workpiece with a partial solder plating layer are produced.
  • the amount of solder can preferably be such that a Lotüberschuss in Soldering is prevented with the disadvantages described above. Furthermore, it can be achieved by a lower proportion of solder in the aluminum workpiece produced that the resulting in the production Committee, ie the at
  • Cladding accumulating scrap contains less solder and therefore is easier to recycle. Furthermore, the general corrosion of the workpiece can be reduced with respect to full-area solder-plated workpieces with the partial surface solder coating. Finally, a more attractive surface of the aluminum workpiece can be achieved by the teilflumbleige Lotplattiertik.
  • the plating piece is precisely matched to the shape of the groove. Under the shape of the groove while the shape of the groove in the
  • Plating piece used with substantially the same width and the same length By fitting accurately, irregularities in the edge thickness of the produced aluminum workpiece can be reduced and slippage of the plating piece during hot rolling can be prevented.
  • the thickness of the plating piece substantially corresponds to the depth of the groove. This is particularly advantageous when the
  • Plating material and the material of the core bar have a similar deformation resistance.
  • This embodiment has the advantage that a uniform hot rolling takes place, since the roller simultaneously with the core ingot or with a on the core bar layer applied and the
  • Plating piece is in contact.
  • the plating piece and the core bar have a different deformation resistance, wherein the thickness of the plating piece is preferably greater than the depth of the groove, when the
  • Plating piece has a lower deformation resistance than the core ingot, and / or wherein the thickness of the cladding is more preferably smaller than the depth of the groove, when the cladding has a greater Umformwiderstand than the core ingot. In this way, the thickness of the
  • Plattier Cultures adapted to the Umformwiderstand and thus to the rolling behavior. For example, plating pieces with greater resistance to deformation show less deformation at the same rolling force than plating pieces with a smaller one
  • Forming resistors lead to problems during hot rolling.
  • Area has a uniform thickness.
  • the plating piece inserted into the groove is spaced from the longitudinal edges of the core bar, preferably at a distance of at least 1 cm, preferably at least 2 cm, in particular at least 5 cm. This can prevent the chipping of the plating piece at the strip edge during hot rolling. Furthermore, in this way, a distance of the cladding layer of the longitudinal edges of the hot strip can be achieved, so that reduced due to the hot rolling thinning of the cladding layer on the edge of the strip and the trimming and Beklastedsschrott can be reduced.
  • the groove may also be spaced from the longitudinal edges of the core bar, preferably at least by the aforementioned distances.
  • a further embodiment results in one of the previously described methods in which a first plating piece of a plating material and a second plating piece of a plating material are provided, in which in the core bars and / or in one on the core bars
  • applied layer at least a first groove is introduced, in which the first plating is inserted into the first groove, wherein the second plating piece in the first or in a second, introduced into the core bars and / or applied to the core bars layer groove
  • the first plating piece is inserted into the first groove.
  • the second Plating piece can then also be inserted into the first groove, in particular immediately adjacent to the first
  • the second plating piece can also be inserted into a second groove which is introduced into the core bar or into a layer applied to the core bar, in particular on the same side of the core bar as the first groove.
  • the union groove has two corresponding areas with different depths with, for example, a stepped groove bottom.
  • the first and the second plating piece can be arranged directly adjacent to each other or spaced apart, with or without a separating web.
  • Separating web is understood to be a narrow web of the core billet or of a layer applied to the core billet, by means of which the first and the second groove are separated from one another.
  • the divider also as a separate separator be provided from the material of the core bar or a layer applied to the core bar layer.
  • the grooves When introducing a first and a two th groove, the grooves may have the same depth or different depths. In this way, for example, the depths of the groove can be individually adapted to the thickness and / or the deformation resistance of the respective Plattier publishede. In a further embodiment of the method
  • the at least one second plating piece at least partially, preferably, the first plating piece
  • the first and the at least one second plating pieces are preferably made of different plating materials.
  • An additional solder joint between the core and the plating layer rolled from the second plating piece can be produced by means of a solder plating layer.
  • the first cladding consists of a first cladding material and the second cladding of a second cladding material different from the first cladding material.
  • Partial plating layers are produced, which have different properties.
  • the cladding materials may have different optical properties.
  • an optically attractive striped surface can be achieved. Furthermore, by using different plating materials a different
  • So can be the first
  • a plating material such as a solder alloy and a corrosion resistant alloy as the second plating material may be used.
  • the aluminum workpiece produced then has good soldering properties in the area of the solder cladding layer, while in the area of the corrosion-resistant layer
  • Plating layer has increased corrosion protection.
  • the first plating piece has a first thickness and the second one
  • aluminum workpieces having locally particularly thick or thin plating layers can be produced thereby.
  • Such a workpiece would be conventional
  • Such a roll-clad aluminum workpiece may preferably be produced by a method as described above. Accordingly, the methods described above are preferably used for producing such a roll-plated
  • the roll-clad aluminum workpiece has a
  • the cladding layer extends only over a portion of the side of the aluminum workpiece. This is understood to mean that the cladding layer in contrast to a
  • the core may in particular be one of the following
  • Aluminum alloys consist of: AA 3xxx, in particular A ⁇ 3003, AA 3005, AA 3103 and AA 3105, as well as AA 6xxx, in particular AA 6063, and their respective modifications.
  • the cladding layer can consist in particular of one of the following aluminum alloys: AlSi alloys, in particular A ⁇ 4045, AA 4047, AA 4343, AA 4004 or AA 4104, in particular for solder cladding layers, AA 1050 or AA 7072, in particular for anti-corrosion cladding layers, or AA 1050 or A ⁇ 3003 for cladding layers with a better visual appearance.
  • AlSi alloys in particular A ⁇ 4045, AA 4047, AA 4343, AA 4004 or AA 4104, in particular for solder cladding layers, AA 1050 or AA 7072, in particular for anti-corrosion cladding layers, or AA 1050 or A ⁇ 3003 for cladding layers with a better visual appearance.
  • the roll-clad aluminum workpiece preferably has a thickness of not more than 20 mm, preferably not more than 10 mm, more preferably not more than 5 mm, in particular not more than 1 mm.
  • the thickness of the roll-plated is
  • Aluminum workpiece preferably in the range of 0.05 mm, preferably from 0.5 mm to 20 mm, preferably to 10 mm.
  • the plating layers preferably have a thickness in the
  • the subregion occupies a maximum of 95%, preferably a maximum of 90 1, in particular a maximum of 85%, of the total area of the side of the aluminum workpiece. In this way it is achieved that at least a proportion of 5% or more of the side of the aluminum workpiece is unplated. In this way, the properties of the
  • Corrosion resistance, solderability, optical appearance, etc. are chosen locally different.
  • the proportion of the partial area on the total area of the side of the workpiece is preferably adapted to the specific application.
  • the subarea may occupy only a maximum of 80%, a maximum of 70%, a maximum of 60 l, a maximum of 50%, a maximum of 40%, a maximum of 30, a maximum of 20% or even a maximum of 10% of the total area of the page.
  • Core bar width preferably equal to or less than that percentage of the portion of the clad layer of the produced aluminum workpiece on the total area of the corresponding side of the aluminum workpiece.
  • the manufacturing process may include a trimming step involving an unplated portion of the
  • Hot rolling produced workpiece is removed as Beklamschrott.
  • the portion of the cladding layer can not exceed 95% of the maximum
  • Aluminum workpiece amount if an unplated portion of the workpiece, for example, 10 removed as Beklamschrott.
  • Aluminum workpiece indicates the portion of the side of the
  • Cladding layer of the aluminum workpiece extends, a size of equal to or less than 50 °, preferably equal to or less than 40%. , in particular equal to or less than 25% of the total area of the side of the aluminum workpiece.
  • the portion has at least one
  • Extent direction a size equal to or less than
  • Part area over which a cladding layer of the Aluminum workpiece extends preferably a width equal to or less than 50%, preferably equal to or less than 40%, in particular equal to or less than 25% of the width of the aluminum strip or the aluminum sheet.
  • Aluminum workpiece are provided, wherein the size and / or the arrangement of the cladding layer is adapted to the particular application for which the aluminum workpiece is provided.
  • negative consequences in the processing of the roll-plated aluminum workpieces e.g. be avoided due to an excess of plating material.
  • each of these portions has a size of equal to or less than 50%, preferably equal to or less than 40%, in particular equal to or less than 25% of the total area of the relevant side of the aluminum workpiece
  • each partial area over which a cladding layer of the aluminum workpiece extends is preferable for each partial area over which a cladding layer of the aluminum workpiece extends to have one
  • At least one cladding layer of a solder alloy preferably of a type ⁇ A 4xxx alloy.
  • the size and / or the arrangement of the brazing material provided by the cladding layer can be adapted to the respective Löfanengine.
  • a further embodiment of the aluminum workpiece is characterized in that the aluminum workpiece has at least ei e soldering for brazing the ⁇ luminiumwerk Anlagens, the Piattiertik is a Lotplattier harsh and the
  • Part area over which the cladding layer extends is adapted to the position of the at least one solder joint.
  • solder cladding layer is present only in the area of the solder joints, so that an excess of solder material or a solder erosion away from the solder joints is prevented.
  • the aluminum workpiece has a first side on one side
  • the subarea and the second subarray may be overlapping, coincident, or disjoint. If there is an overlap or coincidence of the subareas
  • the first cladding layer consists of a first cladding layer
  • the cladding materials may be flat materials having different optical properties or having different functional properties.
  • the first cladding material may be a solder alloy and the second cladding material may be a corrosion resistant alloy.
  • Aluminum workpieces may have part-area solder cladding layers at the intended solder joints, so that the solder quantity required for the soldering can be provided without having a solder surplus or the entire area has to be solder-plated.
  • a previously described roll-clad aluminum workpiece is particularly suitable for producing a folding tube.
  • the aluminum workpiece for example, a
  • Plating layer are applied.
  • Lotplattier only in the sub-areas, in which an external or internal soldering of Mehrhuntfaltrohrs is necessary. This can also be avoided in particular that in other areas to a
  • Wall thickness reduction comes through a Lotplattier für.
  • Aluminum workpiece in which a core ingot of an aluminum alloy and at least one cladding of a cladding material are provided in which at least one groove is inserted into the core ingot and / or in a core bar applied to the layer, wherein the plating is inserted into the groove and in which the core ingot is hot rolled after the insertion of the cladding piece.
  • Plating piece is made of a solder alloy. Method according to embodiment 1 or 2, wherein the
  • Plating piece is precisely adapted to the shape of the groove.
  • the thickness of the plating piece is preferably greater than the depth of the groove when the plating piece has a lower forming resistance than the core bar, and / or wherein the thickness of the plating piece is more preferably smaller than the depth of the groove
  • Plating piece has a greater resistance to deformation than the core ingot.
  • Plating piece of a first cladding material and the second cladding of a second, different from the first cladding material plating material consist.
  • Embodiments 1 to 9 having a core of an aluminum alloy and having at least one
  • Aluminum workpiece extends.
  • Plating layer is a Lotplattiertik and the sub-area over which the cladding layer
  • Fig. 1 shows an embodiment of the method according to the invention
  • the partial figures la) -ld) show a
  • Fig. 1a shows one provided for the method
  • Kernbarren 2 from an aluminum alloy In the core ingot 2, a groove 4 running on both sides in the present example is milled. In Fig. 1b), the groove 4 a
  • a plating piece 6 made of a plating material is further provided, for example, by sawing from a plate of plating material, and inserted into the groove 4 as shown in Fig. 1c).
  • Plating piece 6 is fitting to the shape of the groove. 4
  • the plating piece 6 is also rectangular, and the length and width of the plating piece 6 substantially coincide with the length and width of the groove 4.
  • the thickness of the plating piece 6 coincides with the depth of the groove 4.
  • Plating 6 therefore completely fills the groove 4.
  • the core bar 2 with the plating piece 6 inserted into the groove 4 is then connected to that shown in FIG.
  • the plating piece 6 is plated on the core bar 2, i. with this material, power and / or
  • the aluminum workpiece 7 thus has a core 8 made of an aluminum alloy and a
  • Fig. 2 shows a second embodiment of the method and the roll-plated aluminum workpiece.
  • Fig. 2a is a core bar 22 of a
  • the aluminum workpiece 27 has a core 28 of a
  • the grooves 24a, c, d, e and the plating pieces 26a, d, e, f are dimensioned so that the plating pieces each fit snugly in the corresponding grooves.
  • Plating pieces 26b, c are sized so that both
  • Plating pieces fit next to each other in the groove. Furthermore, the grooves 24a, b have the same depth, so that
  • Grooves 24c, d, e also have the same depth, however greater than the depth of the grooves 24a, b. As a result, thicker plating layers 30d, e, f can be produced.
  • the plating piece 26d has a similar uniform resistance as the core bar 22, while the plating piece 26e has a lower forming resistance and the plating piece 26f has a larger forming resistance than the core bar 22. Because of the different Umformwider proceedings undergoes the hotplate, the plating piece 26e with the lower Umformwidertand a larger and the plating piece 26f with the larger
  • the thickness of the plating piece 26e becomes larger and the thickness of the plating piece 26f is set smaller than the depth of the groove.
  • resulting plating layers 30d,, f are similar in size
  • the plating piece or the core 28 can also be shaped differently or differently.
  • the plating pieces 26a-f may basically be made of the same plating material or different plating materials. By choosing the plating materials for the individual plating pieces 26a-f, the properties of the aluminum workpiece 27 can be adjusted as needed.
  • an aluminum workpiece 27 with locally different properties can be produced.
  • the plating piece 26a may consist of a
  • Lotplattiermaterial consist of a local
  • Lotplattier für 30a produce.
  • the plating pieces 26b-c can have different optical properties, such as matte and shiny, so as an optical
  • Plating 26d may, for example, a
  • corrosion-resistant alloy can be used to locally a corrosion-resistant cladding layer 30d
  • Plating layer arrangement are basically not limited.
  • Fig. 3 shows a third embodiment of the method and the roll-plated aluminum workpiece. The illustration corresponds to the illustration in FIG. 2.
  • the core bar 42 shown in Fig. 3a differs from the core bar 22 in Fig. 2a in that on the core bars
  • 43 may be a full-surface cladding layer, for example, in a first hot rolling on the
  • Kernbarren 42 was plated.
  • the layer 43 may also be glued or soldered to the core bar.
  • Grooves 44a-i have been introduced into layer 43 and / or core bars 42.
  • the depth of the grooves 44a-d is less than the thickness of the layer 43, so that the grooves were effectively introduced only in the layer 43.
  • the depth of the grooves 4 ce is greater than the thickness of the layer 43, so that the grooves were introduced into both the layer 43, and in part in the core ingot 42.
  • Plates 46a-f have been inserted into the grooves 44a-e.
  • the aluminum workpiece 47 shown in Fig. 3b was produced. This comprises an aluminum alloy core 58, plating layers 50a-f corresponding to the plating pieces 6a-f, and one substantially to the area of the plating layers 50d-f
  • the cladding layers 50a-c overlay the cladding layer 49, resulting in multiple cladding. This is also called multicladding.
  • FIG. 4 shows a roll-clad aluminum workpiece as well as a one-piece Mehrkairanerfaltrohr made from this as a fourth Ausustri mecanicbeispiel the roll-plated
  • the in Fig. 4a aluminum workpiece 62 shown in cross-section transverse to the longitudinal extent has an aluminum alloy core 64 and first cladding layers 66-d of a first cladding material and second
  • Cladding layers 68a-c of a second cladding material The first cladding material is solder cladding layers, while the second cladding material is solder cladding layers
  • Plating material is a corrosion-resistant alloy.
  • the aluminum workpiece 62 may be made, for example, by any of the methods previously described. By reshaping the aluminum workpiece 62, the in
  • Fig. 4b shown in cross-section Mehrhuntfaltrohr 70 made.
  • the location of the first cladding layers 66a-d of the aluminum workpiece 62, i. the Lotplattier Anlagenen, is just so that they at Mehrhuntfaltrohr 70 in the joining areas 72a-b, in particular at the base of the
  • Joining area 72b lie.
  • the multi-chamber folding tube 70 can be soldered in the joining regions 72a-b.
  • Plating layers are arranged so as to line the inner cross sections 74a-b of the multi-chambered folding tube 70. Thereby, the corrosion resistance of the Mehrschaltrohrs 70 is compared to that by the
  • FIG. 5 shows a roll-formed aluminum workpiece and a B-type one-piece multi-chamber folding tube made therefrom as a fifth embodiment of the roll-plated aluminum workpiece and as an embodiment of the present invention
  • the aluminum workpiece 82 shown in cross-section in cross-section in FIG. 5a has a core 84 of an aluminum alloy and cladding layers 86, 88 of a solder cladding material
  • Cladding layer 86 is on one side and full-surface cladding layer 88 on the other side of core 84
  • the aluminum workpiece 82 may be made, for example, by any of the methods previously described. By reshaping the aluminum workpiece 82, the in
  • Fig. 5b shown in cross-section Mehrschaltrohr 90 made of B-type.
  • Aluminum workpiece 82 is just so that they are in Mehrschfalt tube 90 in the joining region 92 at the bases of the wings 94 a-b.
  • the foot points of the wings 94a-b can be soldered to the inside of the opposite wall without the need for a full-surface soldering layer on the inside or the application of a solder paste.
  • the wings 94a-b can be soldered together by the cladding layer 88 at their side surfaces.
  • an aluminum workpiece such as the aluminum workpiece 62 or the aluminum workpiece 82 having locally different surface properties through the partially dissimilar cladding layers 66a-d and 68a-c and 86, respectively, it can be improved in an economical manner

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Metal Rolling (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une pièce en aluminium (7, 21, 47, 62) plaquée par laminage, selon lequel un saumon (2, 22, 42) en alliage d'aluminium et au moins une pièce de placage (6, 26a- f, 46a-f) en matériau de placage sont produits, selon lequel au moins une rainure (4, 24 a-e, 44a-e) est pratiquée dans le saumon (2, 22, 42) et/ou sur la couche (43) appliquée sur le saumon (2, 22, 42), selon lequel la pièce de placage (6, 26a-f, 46a-f) est insérée dans la rainure (4, 24 a -e, 44a-e) et selon lequel le saumon (2, 22, 42) est laminé à chaud après insertion de la pièce de placage (6, 26a- f, 46a -f), la largeur de la rainure étant égale ou inférieure à 85 % de la largeur du saumon. L'invention concerne également une pièce en aluminium (7, 27, 47, 62) plaquée par laminage comprenant une âme (8, 28, 58, 64) en alliage d'aluminium et au moins une couche de placage (10, 30a-f, 50 a- f, 66a-d, 68a-c) en matériau de placage sur un côté de la pièce en aluminium (7, 27, 47, 62), la couche de placage (10, 30a- f, 50a-f, 66a-d, 68a-c) ne s'étendant que sur une région partielle du côté de la pièce en aluminium (7, 27, 47, 62) et la région partielle occupant au maximum 95 % de la surface totale du côté. L'invention concerne également l'utilisation d'une telle pièce en aluminium (7, 27, 47, 62) plaquée par laminage pour fabriquer une pièce brasée, en particulier un tuyau ondulé (70, 90).
EP14710893.0A 2013-03-19 2014-03-18 Procédé de fabrication d'une pièce en aluminium plaquée par laminage, pièce en aluminium plaquée par laminage et son utilisation Withdrawn EP2976175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013102821.7A DE102013102821A1 (de) 2013-03-19 2013-03-19 Verfahren zur Herstellung eines walzplattierten Aluminiumwerkstücks, walzplattiertes Aluminiumwerkstück und Verwendung dafür
PCT/EP2014/055413 WO2014147071A1 (fr) 2013-03-19 2014-03-18 Procédé de fabrication d'une pièce en aluminium plaquée par laminage, pièce en aluminium plaquée par laminage et son utilisation

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EP2976175A1 true EP2976175A1 (fr) 2016-01-27

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US (1) US10065271B2 (fr)
EP (1) EP2976175A1 (fr)
JP (1) JP2016524535A (fr)
KR (2) KR102036297B1 (fr)
CN (1) CN105050763A (fr)
BR (1) BR112015021585A2 (fr)
CA (1) CA2903590A1 (fr)
DE (1) DE102013102821A1 (fr)
WO (1) WO2014147071A1 (fr)
ZA (1) ZA201506172B (fr)

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WO2017060234A1 (fr) * 2015-10-05 2017-04-13 Hydro Aluminium Rolled Products Gmbh Matériau composite d'aluminium pour application dans des procédés d'assemblage thermique sans flux et procédé de production
JP2018535100A (ja) * 2015-10-05 2018-11-29 ハイドロ アルミニウム ロールド プロダクツ ゲゼルシャフト ミット ベシュレンクテル ハフツングＨｙｄｒｏ Ａｌｕｍｉｎｉｕｍ Ｒｏｌｌｅｄ Ｐｒｏｄｕｃｔｓ ＧｍｂＨ フラックスフリー熱接合法に用いられるアルミニウム複合材料およびアルミニウム複合材料を製造するための方法
JP7067151B2 (ja) * 2018-03-13 2022-05-16 日立金属株式会社 クラッド材と金属との複合材
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CN105050763A (zh) 2015-11-11
WO2014147071A1 (fr) 2014-09-25
CA2903590A1 (fr) 2014-09-25
KR102036297B1 (ko) 2019-10-24
JP2016524535A (ja) 2016-08-18
US20150375345A1 (en) 2015-12-31
KR20180011894A (ko) 2018-02-02
BR112015021585A2 (pt) 2017-07-18
DE102013102821A1 (de) 2014-09-25
US10065271B2 (en) 2018-09-04
KR20150132542A (ko) 2015-11-25
ZA201506172B (en) 2020-02-26

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