DE705122C - Process for the production of a porous layer on soldering iron that is applied to the heat supply and absorbs the solder - Google Patents

Process for the production of a porous layer on soldering iron that is applied to the heat supply and absorbs the solder

Info

Publication number
DE705122C
DE705122C DES125139D DES0125139D DE705122C DE 705122 C DE705122 C DE 705122C DE S125139 D DES125139 D DE S125139D DE S0125139 D DES0125139 D DE S0125139D DE 705122 C DE705122 C DE 705122C
Authority
DE
Germany
Prior art keywords
layer
base
layers
porous layer
solder
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
Application number
DES125139D
Other languages
German (de)
Inventor
Dr Phil Hans Vatter
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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
Priority to DES123147D priority Critical patent/DE666292C/en
Priority to DES123593D priority patent/DE684612C/en
Priority claimed from DES123593D external-priority patent/DE684612C/en
Priority to DES124888D priority patent/DE708588C/en
Priority to DES124916D priority patent/DE705120C/en
Priority to DES124982D priority patent/DE705121C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES125139D priority patent/DE705122C/en
Priority to DES125138D priority patent/DE731270C/en
Application granted granted Critical
Publication of DE705122C publication Critical patent/DE705122C/en
Expired 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
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/02—Soldering irons; Bits
    • B23K3/025—Bits or tips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Description

In dem Zusatzpatent 684612 zum Patent 666 292 werden Lötkolben beschrieben, deren Lötfinne oder Lötspitze aus einer auf eine die Wärme zuführenden Unterlage aufgebrachten porigen Schicht besteht, die mit dem Lötmittel getränkt ist. Diese porige Schicht ist nach dem genannten Zusatzpatent zweckmäßig eine Sinterschicht aus einem fein unterteilten, in Breiform aufgebrachten und dann aufgesinterten, verzunderungsfreien Metall. Um genügend große Kapillarkräfte für das Aufnehmen des Lotes zu schaffen, ist eine bestimmte Stärke der Sinterschicht erforderlich. ·In the additional patent 684612 to the patent 666 292 soldering irons are described, their Soldering fin or soldering tip made from a surface that is applied to a base that supplies heat porous layer, which is soaked with the solder. This porous layer According to the additional patent mentioned, a sintered layer made of a finely divided, Scaling-free metal applied in a slurry and then sintered on. In order to have sufficient capillary forces for the To take up the solder, a certain thickness of the sintered layer is required. ·

Es hat sich nun gezeigt, daß die porige Schicht nicht ohne weiteres in beliebiger Stärke einwandfrei hergestellt werden kann, weil infolge der verschieden großen Ausdehnungskoeffizienten des Sintermaterials und des Lötkernes beim Abkühlen nach dem. Sintern Risse in der porigen Schicht entstehen, die einem genügend festen Zusammenhalten innerhalb der Schicht und einem genügend guten Festhaften an der Unterlage entgegenwirken und später dazu führen, daß Teile der Schicht abplatzen, wodurch wiederum Teile der Unterlage der Luft und dem Lote zugänglich sind und dadurch in bekannter Weise zu verzundern beginnen.It has now been shown that the porous layer is not easily in any Strength can be produced properly because of the different large expansion coefficients of the sintered material and the solder core during cooling after. Sintering cracks in the porous layer arise, one that is sufficiently tightly held together within the layer and one that is sufficient counteract good adhesion to the substrate and later cause parts of the layer to flake off, which in turn Parts of the base of the air and the plumb bob are accessible and therefore more familiar Way to begin to scale.

Außerdem haben sich aber auch Schwierigkeiten beim Auftragen einer größeren Schichtstärlse ergeben, die hauptsächlich darin bestehen, daß es nicht möglich ist, die breiartig angerührte Masse in ganz gleichmäßiger Stärke auf den Lötkern aufzubringen und zu verhindern, daß sie, bis der Sinter-In addition, however, have also had difficulties in applying a larger one Layer thicknesses result, which mainly consist in the fact that it is not possible to form the pulpy to apply the mixed mass to the solder core in a very even thickness and to prevent it, until the sintering

Claims (3)

Vorgang beendet ist, zusammenläuft oder abtropft. Process has ended, converges or drips. Die Erfindung schlägt deshalb vor, die Schichtstärke der porigen Schicht durch mehrere nacheinander auf die Unterlage aufgesinterte dünne Schichten zu erzeugen. Bei geringer Schichtstärke sind nämlich die Bin-, dungskräfte der Schichten nach der Unterlage hin größer als die Zerreißkräfte an derThe invention therefore proposes increasing the thickness of the porous layer by several successively to produce thin layers sintered onto the substrate. In the case of a thin layer, the binding, The forces of the layers towards the base are greater than the tensile forces on the ίο Oberfläche der Schicht. Aus diesem Grunde werden die einzelnen Schichten so dünn, vorzugsweise 0,75 bis 1 mm stark, hergestellt, daß sie im wesentlichen durch ihre Bindungskraft an der Unterlage gehalten werden. Hiernach ist es möglich, beliebigstarke, einwandfreie, porige Schichten zu erzeugen. ίο surface of the layer. For this reason the individual layers are made so thin, preferably 0.75 to 1 mm thick, that they are held on the base essentially by their binding force. According to this, it is possible to to produce perfect, porous layers. Die Herstellung geschieht in der in dem Patent 684612 angegebenen Weise, wonach durch Spritzen oder Tauchen eine Breischicht auf die Unterlage gebracht wird, worauf diese dann in einem Wasserstoffofen erwärmt und aufgesintert wird. Je nach Erfordernis kann dann dieser Vorgang mehrmals wiederholt werden.The production takes place in the manner indicated in the patent 684612, after which a layer of porridge is applied to the substrate by spraying or dipping, whereupon this is then heated in a hydrogen furnace and sintered on. Depending on the requirement this process can then be repeated several times. I1AJi-: χ τ λ NSi' κ r cjie:I 1 AJi-: χ τ λ NSi 'κ r cjie: ι. Verfahren zur Herstellung einer auf die Wärme zuführende Unterlage aufgebrachten, das Lot aufnehmenden porigen Schicht an Lötkolben nach Patent 684 612, dadurch gekennzeichnet, daß mehrere dünne Schichten übereinander auf die Unterlage aufgebracht werden.ι. Process for the production of a solder-absorbing porous layer applied to the heat-supplying base on soldering iron according to Patent 684 61 2, characterized in that several thin layers are applied to the base one on top of the other. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß jede Schicht für sich als breiige Masse auf die Unterlage aufgetragen, für sich getrocknet und für sich aufgesintert wird.2. The method according to claim 1, characterized in that each layer Applied to the base as a pulpy mass, dried and is sintered on for itself. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die einzelnen Schichten vorzugsweise in Stärken von 0,75 bis ι mm aufgebracht werden.3. The method according to claim 1, characterized in that the individual layers are preferably applied in thicknesses of 0.75 to ι mm. J<i.|i:Hsi>i<irCKKKi;lJ <i. | I: Hsi> i <i r CKKKi; l
DES125139D 1936-06-25 1936-12-01 Process for the production of a porous layer on soldering iron that is applied to the heat supply and absorbs the solder Expired DE705122C (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DES123147D DE666292C (en) 1936-06-25 1936-06-25 Soldering iron with a soldering fin or tip made of porous metal
DES123593D DE684612C (en) 1936-06-25 1936-07-28 Soldering iron with a soldering fin or soldering tip made of porous metal attached to a body to be heated
DES124888D DE708588C (en) 1936-07-28 1936-11-11 Soldering iron with a soldering fin or soldering tip attached to a body to be heated in the form of a firmly adhering layer of non-scaling porous metal
DES124916D DE705120C (en) 1936-06-25 1936-11-13 Soldering iron with a soldering fin or soldering tip attached to a body to be heated in the form of a firmly adhering layer of porous, non-scaling metal
DES124982D DE705121C (en) 1936-06-25 1936-11-18 Soldering iron with a soldering fin or soldering tip made of porous metal attached to a body to be heated
DES125139D DE705122C (en) 1936-07-28 1936-12-01 Process for the production of a porous layer on soldering iron that is applied to the heat supply and absorbs the solder
DES125138D DE731270C (en) 1936-07-28 1936-12-01 Soldering iron with a soldering fin or tip made of porous metal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES123593D DE684612C (en) 1936-06-25 1936-07-28 Soldering iron with a soldering fin or soldering tip made of porous metal attached to a body to be heated
DES125139D DE705122C (en) 1936-07-28 1936-12-01 Process for the production of a porous layer on soldering iron that is applied to the heat supply and absorbs the solder

Publications (1)

Publication Number Publication Date
DE705122C true DE705122C (en) 1941-04-18

Family

ID=32509629

Family Applications (1)

Application Number Title Priority Date Filing Date
DES125139D Expired DE705122C (en) 1936-06-25 1936-12-01 Process for the production of a porous layer on soldering iron that is applied to the heat supply and absorbs the solder

Country Status (1)

Country Link
DE (1) DE705122C (en)

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