EP0735156B1 - Process and apparatus for the partially hot tin plating of a sheet - Google Patents

Process and apparatus for the partially hot tin plating of a sheet Download PDF

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Publication number
EP0735156B1
EP0735156B1 EP96104657A EP96104657A EP0735156B1 EP 0735156 B1 EP0735156 B1 EP 0735156B1 EP 96104657 A EP96104657 A EP 96104657A EP 96104657 A EP96104657 A EP 96104657A EP 0735156 B1 EP0735156 B1 EP 0735156B1
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EP
European Patent Office
Prior art keywords
band
strips
supply
strip
metal smelt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP96104657A
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German (de)
French (fr)
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EP0735156A2 (en
EP0735156A3 (en
Inventor
Isabell Dipl.-Ing. Dr.Re.Nat. Buresch
Traugott Schneider
Hermann Sturm
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Wieland Werke AG
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Wieland Werke AG
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Publication of EP0735156A3 publication Critical patent/EP0735156A3/en
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    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/08—Tin or alloys based thereon
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12708—Sn-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12708—Sn-base component
    • Y10T428/12715—Next to Group IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12708—Sn-base component
    • Y10T428/12722—Next to Group VIII metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Definitions

  • the invention relates to a partially hot-dip tinned tape coatable material according to the preamble of the claim 1.
  • Partly tinned tapes can be used on one or both sides produce for example by the method according to US Pat. No. 4,529,628.
  • liquid metal is applied to a belt via a nozzle partially applied on one or both sides.
  • the fat the coating is about the belt speed and the Nozzle output controlled.
  • the layer thickness is therefore over the entire range is identical.
  • the coating is over the band length throughout.
  • For each hinge side it is only possible to apply a coating material. Become several Coating materials or different properties on a hinge side, there are several production steps one after the other. There is also this Not the possibility of coating the strip edges, what about solderability in the edge area or at Contacting over the belt edge is required. A high This method is therefore not economically viable.
  • the invention is therefore based on the object, in particular accordingly to the needs of the electronics industry to expand partially tinned strips.
  • the object is achieved in that the strip - seen in the longitudinal direction - is interrupted at regular and / or irregular intervals (A 1 , A 2 , A 3 ). Distances (A 1 , A 2 , A 3 %) in the range from 1 to 20 mm are preferred.
  • the strips have different layer thicknesses (D1 / D2), or the strips consist of different coating materials.
  • Harder coating materials e.g. in the Contact zone with softer coating materials e.g. in the Crimp or solder area can be combined.
  • the band material used is preferably copper, copper alloy, Iron or iron alloy in question; as coating materials are preferably pure tin, tin alloys or zinc available.
  • the invention further relates to methods and devices for the production of the partially hot-dip tinned tape.
  • the process assumes that the moving belt with flux is provided and heated and that molten metal at least one pantry through at least one opening applied to the heated tape and superfluous metal melt is stripped.
  • the process is characterized by that the supply of the molten metal from the opening is specifically opened and closed.
  • different coating materials can also be used at one and. same band are used.
  • the device for performing the method according to the invention is simple, it has a decoiler, a flux task, a heating chamber, one with at least an opening provided storage chamber for molten metal, a stripper for molten metal and a reel on.
  • a decoiler for the essentially U-shaped cross-section heating chamber arranged, and there are means for controlling the supply of the molten metal intended.
  • the insert has two on the sides Open the storage chambers of the heating chamber. Provided additionally the edge strips coated on the opposite side the pantries are to be grooved in the heating chamber, which encompass the strip edges. The strip edge is thus additionally coated.
  • the invention creates structures reached, where the coating strips are characterized by high adhesion.
  • Partially tinned tapes are used in electronics and electrical engineering. You will e.g. used for manufacturing for connectors for the automotive industry, the Telecommunications and others Applications are partially coated Tapes also in the manufacture of semiconductor components like QFP's (Quad Flat Package), SOT's (Small Outline Transistor), IC's (Integrated Circuit) etc. Significant here is the combination of the bare belt surface with one well solderable tinned surface.
  • the tape 1 according to Fig. 1 and 2 is each provided with four coating strips 2, 3, 4, 5. According to FIG. 1, these are arranged approximately in the middle of the belt, according to FIG. 2 on the belt edges.
  • the strips 2, 3 on the upper side of the strip should have a layer thickness D1
  • the strips 4, 5 on the lower side of the strip should have a layer thickness D2.
  • the strips 2, 4 consist of a different coating material than the strips 3, 5. alone from the two Fig.1 / 2 are the many variables of the Bandverzinnung with at varying distances (A 1, A 2 , A 3 ...) interrupted strips 2, 3, 4, 5.
  • the tape 1 running off a decoiler 6 passes through a flux task 7 and gets into a heating Heating chamber 8, in which an insert 9 is integrated, in which a storage chamber 10 is arranged.
  • the one in the pantry 10 metal melt 11 is thus at the same time kept at temperature.
  • the insert 9 resiliently on the Volume 1.
  • the molten metal intended for coating 11 can reach the tape 1 via an opening 12.
  • medium for controlling the melt supply (plug control or the like) are indicated by paragraph 13.
  • the layer thickness of the to be applied Strip 2, 3, 4, 5 can be by the following Stripping 14 for the molten metal 11 and / or by pressing the insert 9 more or less strongly band 1 vary.
  • the tinned tape 1 will eventually rolled up on a reel 15.
  • one pantry 10 feeds two adjacent openings 12.
  • the insert 9 has two laterally to the legs 8 'of the heating chamber 8 open storage chambers 10, see above that strips 2, 3, 4, 5 result on the edge strips.
  • pantries are to be provided with strips 10 with grooves 16 in the heating chamber 8 in connection, which grasp the strip edges (means for controlling the melt supply are not shown here).
  • the heating chamber 8, which is essentially U-shaped in cross section can, for example, from a heater cartridge Base plate exist on which a graphite plate and side legs 8 'are also screwed on from graphite. As Material for the insert 9 can also be provided with graphite become.
  • Tapes with the following dimensions can be tinned: Thickness: 0.05 to 1.5 mm, width: 5 to 200 mm.
  • Tinning temperature 50 to 400 ° C.
  • the partially coated in this way Bands an intermetallic phase between coating and basic material on which the liability of Coating reinforced, so that the coating flakes off not in the case of bending processes even after heat treatments occurs.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The partially fire-tinned strip (1) of a coatable material is provided with at least one metal coating strip (2-5) on one or both of its sides, with the width of such strips less than the width (B) of the strip (1). An intermetallic phase is located between the material of the strip (1) and the coating strips (2-5). The strip (1) is characterised by the fact that the coating strips (2-5) in the longitudinal direction are separated from one another by regular and/or irregular distance (A1,A2,A3). Also claimed are a method and an appts. for production of partially fire-tinned strip.

Description

Die Erfindung betrifft ein partiell feuerverzinntes Band aus beschichtbarem Werkstoff nach dem Oberbegriff des Anspruchs 1.The invention relates to a partially hot-dip tinned tape coatable material according to the preamble of the claim 1.

Der Bedarf an hochwertig verzinnten Bändern nimmt zu. Definierte Anforderungsprofile seitens der Kfz-Industrie, der Halbleiterindustrie und anderer Anwender bestimmen den Markt. Beschichtungen unterschiedlich dicker Auflagen aus Reinzinn, Zinn-Legierungen und sogenannter Hartzinn-Legierungen werden gewünscht. Bei letztgenannten Legierungen wird besonderer Wert auf die Verringerung der Steckkraft gelegt.The need for high-quality tinned strips is increasing. Defined Requirements profiles on the part of the automotive industry, the Semiconductor industry and other users determine that Market. Coatings of different thicknesses Pure tin, tin alloys and so-called hard tin alloys are wanted. The latter alloys special emphasis is placed on reducing the insertion force.

Eine partielle bzw. einseitige Verzinnung wird aus folgenden Gründen erwünscht:

  • a) Einsparung von Rohstoffen (Sn),
  • b) Beschichtung der funktionellen Bereiche,
  • c) Eigenschaftskombination von insbesondere Kupfer- und Kupferlegierungs- und Sn-Oberflächen.
    • Partial or one-sided tinning is desired for the following reasons:
  • a) saving of raw materials (Sn),
  • b) coating of the functional areas,
  • c) combination of properties of, in particular, copper and copper alloy and Sn surfaces.

    • Ein- bzw. beidseitig, partiell verzinnte Bänder lassen sich beispielsweise nach dem Verfahren gemäß US-PS 4.529.628 herstellen. Partly tinned tapes can be used on one or both sides produce for example by the method according to US Pat. No. 4,529,628.

    Hierbei wird über eine Düse flüssiges Metall auf ein Band einseitig oder beidseitig partiell aufgebracht. Die Dicke der Beschichtung wird über die Bandgeschwindigkeit und die Düsenausbringung gesteuert. Die Schichtdicke ist somit über die gesamte Bandbreite identisch. Die Beschichtung ist über die Bandlänge durchgehend. Pro Bandseite ist es nur möglich, einen Beschichtungswerkstoff aufzubringen. Werden mehrere Beschichtungswerkstoffe bzw. unterschiedliche Eigenschaften auf einer Bandseite gefordert, so sind mehrere Produktionsschritte nacheinander notwendig. Zudem besteht bei diesem Verfahren nicht die Möglichkeit, die Bandkanten zu beschichten, was bezüglich Lötbarkeit im Randbereich oder bei Kontaktierung über die Bandkante gefordert wird. Eine hohe Wirtschaftlichkeit dieses Verfahrens ist somit nicht gegeben.Here, liquid metal is applied to a belt via a nozzle partially applied on one or both sides. The fat the coating is about the belt speed and the Nozzle output controlled. The layer thickness is therefore over the entire range is identical. The coating is over the band length throughout. For each hinge side it is only possible to apply a coating material. Become several Coating materials or different properties on a hinge side, there are several production steps one after the other. There is also this Not the possibility of coating the strip edges, what about solderability in the edge area or at Contacting over the belt edge is required. A high This method is therefore not economically viable.

    Der Erfindung liegt daher die Aufgabe zugrunde, insbes. entsprechend dem Bedarf der Elektronik-Industrie die Palette an partiell verzinnten Bändern zu erweitern.The invention is therefore based on the object, in particular accordingly to the needs of the electronics industry to expand partially tinned strips.

    Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Streifen - in Längsrichtung gesehen - in regelmäßigen und/ oder unregelmäßigen Abständen (A1, A2, A3 ...) unterbrochen ist. Abstände (A1, A2, A3 ...) im Bereich von 1 bis 20 mm sind bevorzugt.The object is achieved in that the strip - seen in the longitudinal direction - is interrupted at regular and / or irregular intervals (A 1 , A 2 , A 3 ...). Distances (A 1 , A 2 , A 3 ...) in the range from 1 to 20 mm are preferred.

    Sofern mindestens zwei Streifen vorhanden sind, sind diese vorzugsweise auf unterschiedliche Weise unterbrochen. Nach weiteren bevorzugten Ausführungsformen der Erfindung weisen die Streifen unterschiedliche Schichtdicken (D1/D2) auf, bzw. die Streifen bestehen aus unterschiedlichen Beschichtungswerkstoffen.If there are at least two stripes, these are preferably interrupted in different ways. To have further preferred embodiments of the invention the strips have different layer thicknesses (D1 / D2), or the strips consist of different coating materials.

    Bei unterschiedlichen Schichtdicken der Streifen bzw. der Verzinnung auf Vor- und Rückseite können die Vorteile dünner Sn-Schichten mit z.B. niedrigen Steck- und Ziehkräften mit den Vorteilen dicker Sn-Schichten mit z.B. guter Lötbarkeit kombiniert werden (speziell für Steckverbinder).With different layer thicknesses of the strips or Tinning on the front and back can make the benefits thinner Sn layers with e.g. low insertion and pulling forces the advantages of thick Sn layers with e.g. good solderability can be combined (especially for connectors).

    Ebenso können härtere Beschichtungswerkstoffe z.B. in der Kontaktzone mit weicheren Beschichtungswerkstoffen z.B. im Crimp- oder Lötbereich kombiniert werden.Harder coating materials, e.g. in the Contact zone with softer coating materials e.g. in the Crimp or solder area can be combined.

    Als Bandmaterial kommt vorzugsweise Kupfer, Kupfer-Legierung, Eisen oder Eisen-Legierung in Frage; als Beschichtungswerkstoffe stehen vorzugsweise Reinzinn, Zinn-Legierungen oder Zink zur Verfügung.The band material used is preferably copper, copper alloy, Iron or iron alloy in question; as coating materials are preferably pure tin, tin alloys or zinc available.

    Die Erfindung betrifft weiterhin Verfahren und Vorrichtung zur Herstellung des partiell feuerverzinnten Bandes. Das Verfahren geht davon aus, daß das bewegte Band mit Flußmittel versehen und erwärmt wird und daß Metallschmelze aus mindestens einer Vorratskammer über mindestens eine Öffnung auf das erwärmte Band aufgebracht und überflüssige Metallschmelze abgestreift wird. Das Verfahren ist dadurch gekennzeichnet, daß die Zufuhr der Metallschmelze aus der Öffnung gezielt geöffnet und geschlossen wird.The invention further relates to methods and devices for the production of the partially hot-dip tinned tape. The The process assumes that the moving belt with flux is provided and heated and that molten metal at least one pantry through at least one opening applied to the heated tape and superfluous metal melt is stripped. The process is characterized by that the supply of the molten metal from the opening is specifically opened and closed.

    Bei der Herstellung eines Bandes mit mindestens zwei Streifen empfiehlt es sich, daß für die einzelnen Streifen die Zufuhr der Metallschmelze unterschiedlich gesteuert wird.When making a tape with at least two strips it is recommended that for each strip the Supply of the molten metal is controlled differently.

    Zur Herstellung eines Bandes mit mindestens zwei Streifen unterschiedlicher Dicke wird erfindungsgemäß für die Streifen eine unterschiedliche Abstreifung der Metallschmelze vorgenommen.To make a tape with at least two strips different thickness is according to the invention for the strips a different stripping of the molten metal performed.

    Erfindungsgemäß können weiterhin unterschiedliche Beschichtungswerkstoffe bei ein und. demselben Band zum Einsatz kommen. According to the invention, different coating materials can also be used at one and. same band are used.

    Die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens ist einfach ausgebildet, sie weist eine Abrollhaspel, eine Flußmittelaufgabe, eine Heizkammer, eine mit mindestens einer Öffnung versehene Vorratskammer für Metallschmelze, eine Abstreifung für Metallschmelze und eine Aufrollhaspel auf. Erfindungsgemäß ist die Vorratskammer in einem jeweils auswechselbaren Einsatz für die im wesentlichen U-förmigen Querschnitt aufweisende Heizkammer angeordnet, und es sind Mittel zur Steuerung der Zufuhr der Metallschmelze vorgesehen.The device for performing the method according to the invention is simple, it has a decoiler, a flux task, a heating chamber, one with at least an opening provided storage chamber for molten metal, a stripper for molten metal and a reel on. According to the pantry is in one each interchangeable insert for the essentially U-shaped cross-section heating chamber arranged, and there are means for controlling the supply of the molten metal intended.

    Zur Herstellung beispielsweise eines Bandes mit mindestens zwei in etwa mittig angeordneten Streifen speist die Vorratskammer mindestens zwei nebeneinander liegende Öffnungen.For example, to produce a tape with at least the storage chamber feeds two strips arranged approximately in the center at least two openings next to each other.

    Zur Herstellung eines Bandes mit beschichteten Randstreifen weist der Einsatz erfindungsgemäß zwei seitlich zu den Schenkeln der Heizkammer geöffnete Vorratskammern auf. Sofern zusätzlich auch die Randstreifen an der Gegenseite beschichtet werden sollen, stehen die Vorratskammern mit Nuten in der Heizkammer in Verbindung, welche die Bandkanten umgreifen. Somit wird zusätzlich die Bandkante beschichtet.For the production of a tape with coated edge strips According to the invention, the insert has two on the sides Open the storage chambers of the heating chamber. Provided additionally the edge strips coated on the opposite side the pantries are to be grooved in the heating chamber, which encompass the strip edges. The strip edge is thus additionally coated.

    Im Gegensatz zur Galvanik werden durch die Erfindung Strukturen erreicht, bei denen sich die Beschichtungsstreifen durch eine hohe Haftfähigkeit auszeichnen.In contrast to electroplating, the invention creates structures reached, where the coating strips are characterized by high adhesion.

    Partiell verzinnte Bänder finden Verwendung in der Elektronik und Elektrotechnik. Sie werden z.B. eingesetzt zur Fertigung für Steckverbinder für die Automobilindustrie, die Telekommunikation u.a. Anwendungen finden partiell beschichtete Bänder auch bei der Fertigung von Halbleiterbauelementen wie QFP's (Quad Flat Package), SOT's (Small Outline Transistor), IC's (Integrated Circuit) u.a. Von Bedeutung ist hier die Kombination der blanken Bandoberfläche mit einer gut lötbaren verzinnten Oberfläche. Partially tinned tapes are used in electronics and electrical engineering. You will e.g. used for manufacturing for connectors for the automotive industry, the Telecommunications and others Applications are partially coated Tapes also in the manufacture of semiconductor components like QFP's (Quad Flat Package), SOT's (Small Outline Transistor), IC's (Integrated Circuit) etc. Significant here is the combination of the bare belt surface with one well solderable tinned surface.

    Die Erfindung wird anhand der folgenden Ausführungsbeispiele näher erläutert. Es zeigt

    Fig.1/2
    jeweils schematisch die Anordnung unterbrochener Beschichtungsstreifen auf einem Band,
    Fig.3
    schematisch den Verfahrensablauf und
    Fig.4-6
    schematisch die Ausbildung verschiedener Vorratskammern.
    The invention is explained in more detail using the following exemplary embodiments. It shows
    Fig. 1/2
    each schematically shows the arrangement of interrupted coating strips on a belt,
    Fig. 3
    schematically the procedure and
    Fig. 4-6
    schematically the formation of various pantries.

    Das Band 1 nach Fig.1 bzw. 2 ist jeweils mit vier Beschichtungsstreifen 2, 3, 4, 5 versehen. Gemäß Fig.1 sind diese etwa in der Bandmitte, gemäß Fig.2 an den Bandkanten angeordnet. In beiden Fig.1/2 sollen die Streifen 2, 3 auf der Bandoberseite eine Schichtdicke Dl aufweisen, die Streifen 4, 5 auf der Bandunterseite eine Schichtdicke D2. Weiterhin ist in Fig.2 angedeutet, daß die Streifen 2, 4 aus einem anderen Beschichtungswerkstoff bestehen als die Streifen 3, 5. Allein aus den beiden Fig.1/2 sind die vielfachen Möglichkeiten der Bandverzinnung mit in unterschiedlichen Abständen (A1, A2, A3 ...) unterbrochenen Streifen 2, 3, 4, 5 ersichtlich.The tape 1 according to Fig. 1 and 2 is each provided with four coating strips 2, 3, 4, 5. According to FIG. 1, these are arranged approximately in the middle of the belt, according to FIG. 2 on the belt edges. In both FIGS. 1/2, the strips 2, 3 on the upper side of the strip should have a layer thickness D1, the strips 4, 5 on the lower side of the strip should have a layer thickness D2. Furthermore, it is indicated in Figure 2, that the strips 2, 4 consist of a different coating material than the strips 3, 5. alone from the two Fig.1 / 2 are the many variables of the Bandverzinnung with at varying distances (A 1, A 2 , A 3 ...) interrupted strips 2, 3, 4, 5.

    In Fig.3 ist der erfindungsgemäße Verfahrensablauf erläutert:The process sequence according to the invention is explained in FIG. 3:

    Das von einer Abrollhaspel 6 ablaufende Band 1 durchläuft eine Flußmittelaufgabe 7 und gelangt zur Erwärmung in eine Heizkammer 8, in welche ein Einsatz 9 integriert ist, in dem eine Vorratskammer 10 angeordnet ist. Die in der Vorratskammer 10 befindliche Metallschmelze 11 wird damit gleichzeitig auf Temperatur gehalten. Der Einsatz 9 liegt federnd auf dem Band 1 auf. Die zur Beschichtung vorgesehene Metallschmelze 11 kann über eine Öffnung 12 auf das Band 1 gelangen. Mittel zur Steuerung der Schmelzezufuhr (Stopfenregelung od. dgl.) sind durch Ziffer 13 angedeutet. Die Schichtdicke des aufzubringenden Streifens 2, 3, 4, 5 läßt sich durch die nachfolgende Abstreifung 14 für die Metallschmelze 11 und/oder durch mehr oder minder starkes Anpressen des Einsatzes 9 an das Band 1 variieren. Das verzinnte Band 1 wird schließlich auf eine Aufrollhaspel 15 aufgerollt.The tape 1 running off a decoiler 6 passes through a flux task 7 and gets into a heating Heating chamber 8, in which an insert 9 is integrated, in which a storage chamber 10 is arranged. The one in the pantry 10 metal melt 11 is thus at the same time kept at temperature. The insert 9 resiliently on the Volume 1. The molten metal intended for coating 11 can reach the tape 1 via an opening 12. medium for controlling the melt supply (plug control or the like) are indicated by paragraph 13. The layer thickness of the to be applied Strip 2, 3, 4, 5 can be by the following Stripping 14 for the molten metal 11 and / or by pressing the insert 9 more or less strongly band 1 vary. The tinned tape 1 will eventually rolled up on a reel 15.

    In den Fig.4 bis 6 sind schematisch die Ausbildung verschiedener Vorratskammern 10 (Draufsicht/Querschnitt) und die sich daraus ergebende Anordnung der Streifen 2, 3, 4, 5 auf dem Band 1 dargestellt.4 to 6 are schematically the formation of various Pantries 10 (top view / cross section) and the resulting arrangement of strips 2, 3, 4, 5 the volume 1 shown.

    Gemäß Fig.4 speist beispielsweise eine Vorratskammer 10 zwei nebeneinander liegende Öffnungen 12.4, for example, one pantry 10 feeds two adjacent openings 12.

    Gemäß Fig.5 weist der Einsatz 9 zwei seitlich zu den Schenkeln 8' der Heizkammer 8 geöffnete Vorratskammern 10 auf, so daß sich Streifen 2, 3, 4, 5 auf den Randstreifen ergeben.According to Figure 5, the insert 9 has two laterally to the legs 8 'of the heating chamber 8 open storage chambers 10, see above that strips 2, 3, 4, 5 result on the edge strips.

    Falls in demselben Arbeitsgang auch die Bandunterseite mit Streifen versehen werden soll, stehen diese Vorratskammern 10 mit Nuten 16 in der Heizkammer 8 in Verbindung, welche die Bandkanten umgreifen (Mittel zur Steuerung der Schmelzezufuhr sind hier nicht näher dargestellt).If the underside of the belt is also used in the same operation These pantries are to be provided with strips 10 with grooves 16 in the heating chamber 8 in connection, which grasp the strip edges (means for controlling the melt supply are not shown here).

    Die im Querschnitt im wesentlichen U-förmige Heizkammer 8 kann beispielsweise aus einer mit Heizpatronen versehenen Grundplatte bestehen, auf die eine Graphitplatte und Seitenschenkel 8' ebenfalls aus Graphit aufgeschraubt sind. Als Werkstoff für den Einsatz 9 kann ebenfalls Graphit vorgesehen werden.The heating chamber 8, which is essentially U-shaped in cross section can, for example, from a heater cartridge Base plate exist on which a graphite plate and side legs 8 'are also screwed on from graphite. As Material for the insert 9 can also be provided with graphite become.

    Verzinnt werden können Bänder mit folgenden Abmessungen: Dicke: 0,05 bis 1,5 mm, Breite: 5 bis 200 mm. Tapes with the following dimensions can be tinned: Thickness: 0.05 to 1.5 mm, width: 5 to 200 mm.

    Verzinnungstemperatur: 50 bis 400 °C.Tinning temperature: 50 to 400 ° C.

    Verzinnungsgeschwindigkeit: 5 bis 100 m/min.Tinning speed: 5 to 100 m / min.

    Erreicht werden können Schichtdicken von 0,2 bis 25 µm.Can be achieved layer thickness from 0.2 to 25 μ m.

    Verfahrensbedingt weisen die auf diese Art partiell beschichteten Bänder eine intermetallische Phase zwischen Beschichtung und Grundmaterial auf, welche die Haftung der Beschichtung verstärkt, so daß ein Abplatzen der Beschichtung bei Biegevorgängen auch nach Wärmebehandlungen nicht auftritt.Due to the process, the partially coated in this way Bands an intermetallic phase between coating and basic material on which the liability of Coating reinforced, so that the coating flakes off not in the case of bending processes even after heat treatments occurs.

    Claims (15)

    1. Partially hot-tin-plated band (1) of coatable material, which band has, on one or both sides of its surface, at least one metallic coating strip (2, 3, 4, 5) extending in the longitudinal direction and having a smaller width than the band width B, an intermetallic phase (IMP) being formed between the band material and the strip (2, 3, 4, 5), characterised in that the strip (2, 3, 4, 5) - viewed in the longitudinal direction - is interrupted at regular and/or irregular intervals (A1, A2, A3 ...) .
    2. Band according to claim 1, characterised in that the intervals (A1, A2, A3 ...) lie in the range of from 1 to 20 mm.
    3. Band according to claim 1 or 2 having at least two strips (2, 3, 4, 5), characterised in that the strips (2, 3, 4, 5) are interrupted in a varying manner (A1≠A2≠A3 ...) .
    4. Band according to one or more of claims 1 to 3 having at least two strips (2, 3, 4, 5), characterised in that the strips (2, 3, 4, 5) have different layer thicknesses (D1/D2).
    5. Band according to one or more of claims 1 to 4 having at least two strips (2, 3, 4, 5), characterised in that each of the strips (2, 3, 4, 5) comprises a different coating material.
    6. Band according to one or more of claims 1 to 5, characterised in that the band (1) comprises copper, a copper alloy, iron or an iron alloy.
    7. Band according to one or more of claims 1 to 6, characterised in that the strips (2, 3, 4, 5) comprise pure tin, a tin alloy or zinc.
    8. Process for the manufacture of a band (1) according to claim 1 or 2, in which the moved band (1) is provided with a fluxing agent and heated, and in which metal smelt (11) from at least one supply chamber (10) is applied to the heated band (1) by way of at least one opening (12) and excess metal smelt (11) is stripped off, characterised in that the supply of metal smelt (11) from the opening (12) is opened and closed in a controlled manner.
    9. Process according to claim 8 for the manufacture of a band (1) according to claim 3, characterised in that the supply of metal smelt (11) to the strips (2, 3, 4, 5) is controlled in a varying manner.
    10. Process according to claim 8 or 9 for the manufacture of a band (1) according to claim 4, characterised in that the metal smelt (11) is stripped off the strips (2, 3, 4, 5) in a varying manner.
    11. Process according to one or more of claims 8 to 10 for the manufacture of a band (1) according to claim 5, characterised in that different: coating materials are used for the strips (2, 3, 4, 5).
    12. Apparatus for carrying out the process according to one or more of claims 8 to 11, which apparatus has an unrolling reel (6), a fluxing agent feeder (7), a heating chamber (8), a supply chamber (10) for metal smelt (11), which chamber is provided with at least one opening (12), a stripping-off means (14) and a rolling-up reel (15), characterised in that the supply chamber (10) is arranged in an insert (9) which is exchangeable in each case and which is intended for the heating chamber (8) having a substantially U-shaped cross-section, and in that means (13) for controlling the supply of metal smelt (11) are provided.
    13. Apparatus according to claim 12, characterised in that the supply chamber (10) feeds at least two openings (12) arranged next to one another.
    14. Apparatus according to claim 12, characterised in that the insert (9) has two supply chambers (10) opened laterally with respect to the limbs (8') of the heating chamber (8).
    15. Apparatus according to claim 14, characterised in that the supply chambers (10) are connected to grooves (16) in the heating chamber (8) which engage around the band edges.
    EP96104657A 1995-03-30 1996-03-23 Process and apparatus for the partially hot tin plating of a sheet Expired - Lifetime EP0735156B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19511656 1995-03-30
    DE19511656A DE19511656C2 (en) 1995-03-30 1995-03-30 Partially hot-dip tinned tape

    Publications (3)

    Publication Number Publication Date
    EP0735156A2 EP0735156A2 (en) 1996-10-02
    EP0735156A3 EP0735156A3 (en) 1998-10-28
    EP0735156B1 true EP0735156B1 (en) 2001-09-05

    Family

    ID=7758144

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96104657A Expired - Lifetime EP0735156B1 (en) 1995-03-30 1996-03-23 Process and apparatus for the partially hot tin plating of a sheet

    Country Status (7)

    Country Link
    US (1) US5712048A (en)
    EP (1) EP0735156B1 (en)
    JP (1) JP3954129B2 (en)
    AT (1) ATE205262T1 (en)
    DE (2) DE19511656C2 (en)
    DK (1) DK0735156T3 (en)
    ES (1) ES2161310T3 (en)

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    EP1905857A2 (en) 2006-09-29 2008-04-02 EZM Edelstahlzieherei Mark GmbH High-strength steel and applications for such steel
    EP2468926B1 (en) * 2010-12-15 2017-07-05 Diehl Metal Applications GmbH Method for producing a workpiece made of metal or an alloy of a metal having a coating

    Families Citing this family (3)

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    ITMI20042516A1 (en) * 2004-12-27 2005-03-27 Getters Spa PROCESS FOR MANUFACTURING BY DEPOSITION OF LOW-BONDING LEAGUE LOADING DEVICES AT LEAST ONE ACTIVE MATERIAL
    DE102006023282B4 (en) * 2006-05-18 2010-04-15 Wieland-Werke Ag Coating plant for metal strips and method for producing one-sided partially coated metal strips
    DE102006033072B4 (en) * 2006-07-14 2008-11-13 Von Ardenne Anlagentechnik Gmbh Method and device for coating substrates by immersion in a molten metal

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    EP2468926B1 (en) * 2010-12-15 2017-07-05 Diehl Metal Applications GmbH Method for producing a workpiece made of metal or an alloy of a metal having a coating

    Also Published As

    Publication number Publication date
    ATE205262T1 (en) 2001-09-15
    DE19511656C2 (en) 1997-11-27
    JPH08283924A (en) 1996-10-29
    EP0735156A2 (en) 1996-10-02
    DE19511656A1 (en) 1996-10-02
    DK0735156T3 (en) 2001-11-05
    JP3954129B2 (en) 2007-08-08
    DE59607603D1 (en) 2001-10-11
    US5712048A (en) 1998-01-27
    ES2161310T3 (en) 2001-12-01
    EP0735156A3 (en) 1998-10-28

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