CH385148A - Process for the production of honeycomb cores - Google Patents

Process for the production of honeycomb cores

Info

Publication number
CH385148A
CH385148A CH26961A CH26961A CH385148A CH 385148 A CH385148 A CH 385148A CH 26961 A CH26961 A CH 26961A CH 26961 A CH26961 A CH 26961A CH 385148 A CH385148 A CH 385148A
Authority
CH
Switzerland
Prior art keywords
welding
strips
honeycomb cores
welded
honeycomb
Prior art date
Application number
CH26961A
Other languages
German (de)
Inventor
Richter Erwin
Firchow Wolfgang
Original Assignee
Inst Leichtbau
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 Inst Leichtbau filed Critical Inst Leichtbau
Publication of CH385148A publication Critical patent/CH385148A/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00Making rigid structural elements or units, e.g. honeycomb structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Laminated Bodies (AREA)

Description

  

  Verfahren zur Herstellung von     Wabenkernen       Die Erfindung betrifft ein Verfahren zur Her  stellung von     Wabenkernen    durch Schweissen und an  schliessendes Recken der geschweissten Blechpakete.  



  Es ist ein Verfahren zur Herstellung von Waben  kernen bekannt, bei dem     vorgesickte    Blechstreifen  oder Wellblechstreifen durch Punktschweissen mit  Schweisszangen zu     Wabenkernen    zusammengefügt  werden. Hierbei ist die     Wabenkernhöhe    und der Ab  stand der Schweissnähte durch die Grösse der  Schweisszange begrenzt.  



  Bei einem weiteren bekannten Verfahren dieser  Art werden Wellblechstreifen unter Verwendung von  Auflageschienen durch     Rollennahtschrittschweissen    zu       Wabenkernplatten    verbunden. Hierbei wird jede Lage  einzeln aufgeschweisst.  



  Die beiden vorgenannten Verfahren zur Herstel  lung von     Wabenkernen    haben den Nachteil, dass ent  weder die     Wabenhöhe    und der Abstand der Schweiss  nähte durch die Grösse der Schweisszange begrenzt ist  oder dass die     Wabenblechstreifen    einzeln aufge  schweisst werden müssen.  



  Der Erfindung liegt nun die Aufgabe zugrunde,  ein Verfahren zu schaffen, durch welches ermöglicht  wird,     Wabenkerne    in beliebiger Höhe herzustellen,  den Abstand der Schweissnähte wahlweise festzulegen  und mehrere Blechlagen gleichzeitig zu schweissen.  



  Das erfindungsgemässe Verfahren zeichnet sich  dadurch aus, dass man zwischen den zur Bildung der       Wabenkerne    vorgesehenen Blechen mindestens ange  nähert in Schweissrichtung zwischen den Elektroden  vor Beginn des Schweissvorganges Streifen aus einem  Werkstoff mit guter thermischer und elektrischer  Leitfähigkeit in die jeweils einer Schweissnaht nach  geordneten Schweisslücken einlegt.  



  An einem Ausführungsbeispiel wird nachstehend  an Hand der Zeichnung das erfindungsgemässe Ver  fahren näher erläutert.    Gezeigt ist ein Schnitt durch ein Blechpaket, wo  bei eine Nahtfolge bereits geschweisst ist. Die Bleche  sind     mit    1 bezeichnet. Sie liegen übereinander. In den  Schweisslücken sind Materialstreifen 2 unter der obe  ren Elektrode derart zwischen die Bleche 1 gelegt,  dass jeweils einer Schweissnaht 3 eine mit einem  Streifen 2 ausgefüllte Schweisslücke folgt. Als Mate  rialstreifen 2 sind solche aus einem     thermisch    und  elektrisch gut leitenden Werkstoff, z. B. Kupfer, vor  gesehen.  



  Das Verfahren wird wie folgt durchgeführt:  Die nach Möglichkeit entfetteten und gebeizten  Bleche werden in entsprechender     Lagenzahl    überein  andergelegt und an den vorzusehenden     Schweisslük-          ken    die Streifen 2 eingelegt. Die     Schweissung    ist mit  einem oder mehreren Rollenpaaren gleichzeitig mög  lich. Nachdem die erste Nahtfolge geschweisst ist,  werden die entsprechenden Streifen 2 herausgezogen,  um ein Schmieren und eventuelles Festkleben dieser  Streifen 2 an den Blechen 1 zu verhindern. Die Elek  troden werden seitlich verschoben, und die nächste  Nahtfolge wird geschweisst, und nach beendetem  Schweissvorgang werden die betreffenden Streifen 2  wieder entfernt.

   Die Vorgänge wiederholen sich je  nach Breite der Blechpakete und der dadurch an  fallenden Zahl der zu schweissenden Nähte. Das ge  schweisste Blechpaket wird dann senkrecht zu den  einzelnen     Nähten    in Streifen gewünschter Breite ge  schnitten. Durch entsprechendes Recken der ge  schweissten Blechpakete entstehen die     Wabenkerne.     



  Die entstandenen     Wabenkerne    können durch     An-          einanderschweissen    mit     Hilfe    von     Punktschweisszan-          gen    zu beliebig grossen     Wabenkernplatten    zusammen  gefügt werden.



  Method for producing honeycomb cores The invention relates to a method for producing honeycomb cores by welding and then stretching the welded laminated cores.



  A method for producing honeycomb cores is known in which pre-beaded sheet metal strips or corrugated sheet metal strips are joined together to form honeycomb cores by spot welding with welding tongs. The height of the honeycomb core and the distance between the weld seams is limited by the size of the welding gun.



  In a further known method of this type, strips of corrugated iron are connected to honeycomb core panels by roller seam step welding using support rails. Each layer is welded on individually.



  The two aforementioned methods for producing honeycomb cores have the disadvantage that either the honeycomb height and the distance between the weld seams are limited by the size of the welding tongs or that the honeycomb strips have to be welded on individually.



  The invention is based on the object of creating a method by means of which it is possible to produce honeycomb cores at any height, to selectively define the distance between the weld seams and to weld several sheet metal layers at the same time.



  The method according to the invention is characterized in that strips made of a material with good thermal and electrical conductivity are inserted between the sheets provided for forming the honeycomb cores at least approximated in the welding direction between the electrodes before the start of the welding process in the welded gaps arranged according to one weld seam.



  In one embodiment, the inventive method will be explained in more detail with reference to the drawing. Shown is a section through a laminated core where a seam sequence has already been welded. The sheets are labeled 1. They lie on top of each other. In the welding gaps, strips of material 2 are placed under the upper electrode between the metal sheets 1 in such a way that each weld seam 3 is followed by a welding gap filled with a strip 2. As Mate rialstrips 2 are those made of a thermally and electrically highly conductive material such. B. copper, seen before.



  The process is carried out as follows: The metal sheets, which have been degreased and pickled as far as possible, are laid one on top of the other in the appropriate number of layers and the strips 2 are inserted at the welding gaps to be provided. The welding is possible with one or more pairs of rollers at the same time, please include. After the first seam sequence has been welded, the corresponding strips 2 are pulled out in order to prevent these strips 2 from smearing and possibly sticking to the metal sheets 1. The electrodes are shifted laterally and the next sequence of seams is welded, and after the welding process has ended, the relevant strips 2 are removed again.

   The processes are repeated depending on the width of the sheet stacks and the resulting number of seams to be welded. The welded laminated core is then cut into strips of the desired width perpendicular to the individual seams. The honeycomb cores are created by stretching the welded sheet metal stacks accordingly.



  The resulting honeycomb cores can be joined together to form honeycomb core panels of any size by welding them together with the help of spot welding tongs.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von Wabenkernen aus Stahlfeinblechen durch Schweissen und anschliessendes Recken der geschweissten Blechpakete, dadurch ge kennzeichnet, dass man zwischen den zur Bildung der Wabenkerne vorgesehenen Blechen (1) mindestens angenähert in Schweissrichtung zwischen den Elek troden vor Beginn des Schweissvorganges Streifen (2) aus einem Werkstoff mit guter thermischer und elek trischer Leitfähigkeit in die jeweils einer Schweiss naht (3) nachgeordneten Schweisslücken einlegt. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch, dadurch ge kennzeichnet, dass man als Werkstoff für die Streifen (2) Kupfer verwendet. PATENT CLAIM A process for the production of honeycomb cores from thin steel sheets by welding and subsequent stretching of the welded laminated core, characterized in that strips (2) are made between the sheets (1) provided for forming the honeycomb cores at least approximately in the welding direction between the electrodes before the start of the welding process. made of a material with good thermal and electrical conductivity in each of the welding gaps downstream of a welding seam (3). SUBClaims 1. The method according to claim, characterized in that copper is used as the material for the strips (2). 2. Verfahren nach Patentanspruch und Unter anspruch 1, dadurch gekennzeichnet, dass man als Schweissart die Rollennahtschweissung unter Benut zung der Impulshäufungsmethode verwendet. 2. The method according to claim and sub-claim 1, characterized in that the type of welding used is the roller seam welding using the pulse accumulation method.
CH26961A 1960-09-15 1961-01-09 Process for the production of honeycomb cores CH385148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD6977460 1960-09-15

Publications (1)

Publication Number Publication Date
CH385148A true CH385148A (en) 1964-12-15

Family

ID=5477539

Family Applications (1)

Application Number Title Priority Date Filing Date
CH26961A CH385148A (en) 1960-09-15 1961-01-09 Process for the production of honeycomb cores

Country Status (1)

Country Link
CH (1) CH385148A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539344A1 (en) * 1991-10-25 1993-04-28 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Construction element having a cellular structure and method of manufacturing such element
CN119566489A (en) * 2024-11-07 2025-03-07 中国航发南方工业有限公司 Method for reducing burning loss of resistance spot welding metal honeycomb surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539344A1 (en) * 1991-10-25 1993-04-28 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Construction element having a cellular structure and method of manufacturing such element
CN119566489A (en) * 2024-11-07 2025-03-07 中国航发南方工业有限公司 Method for reducing burning loss of resistance spot welding metal honeycomb surface

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