CH256280A - Process for the vacuum-tight welding of copper and iron parts by electrical resistance welding. - Google Patents

Process for the vacuum-tight welding of copper and iron parts by electrical resistance welding.

Info

Publication number
CH256280A
CH256280A CH256280DA CH256280A CH 256280 A CH256280 A CH 256280A CH 256280D A CH256280D A CH 256280DA CH 256280 A CH256280 A CH 256280A
Authority
CH
Switzerland
Prior art keywords
welding
coating
vacuum
copper
tight
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Albiswerk Zuerich
Original Assignee
Siemens Ag Albis
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 Siemens Ag Albis filed Critical Siemens Ag Albis
Publication of CH256280A publication Critical patent/CH256280A/en

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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
    • B23K11/20—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Description

  

  Verfahren     zum    vakuumdichten Verschweissen von Kupfer- mit     Eisenteilen     durch elektrische Widerstandsschweissung.    Die bisher übliche Art des.     Verschwei-          ssens    von Kupfer- mit Eisenteilen durch di  rekte Verbindung in der     elektrischen    Wider  standsschweissmaschine genügt den Anforde  rungen an eine zuverlässige vakuumdichte  Verschweissung in der Massenfabrikation  nicht.    Versuche haben nun ergeben, dass es mög  lich ist, einwandfreie vakuumdichte Ver  schweissungen zu erhalten, wenn man gemäss  der vorliegenden Erfindung vor dem Ver  schweissen den Kupferteil an der Schweiss  stelle mit einem andern Metall überzieht und  dann die elektrische Schweissung vollzieht.

    Als Überzugsmaterial haben sich besonders  Eisen     und    Nickel bewährt. Der Überzug       selbst    kann beispielsweise galvanisch oder  durch das Metallspritzverfahren aufgebracht  werden. In verschiedenen Anwendungsfällen  ist es vorteilhaft, den Überzug vor dem Ver  schweissen noch im Hochvakuum oder in einer  Schutzgasatmosphäre bei hoher Temperatur  auf dem Kupferteil festzusintern.  



  Im nachfolgenden und an Hand der Zeich  nung wird ein Ausführungsbeispiel des Ver  fahrens beschrieben.  



  Der mit dem Eisenteil 1 zu verschweissende  Kupferteil 2 ist bei der Schweissstelle 3 bei  spielsweise verstählt und im Hochvakuum  gesintert.     Beim    Schweissen werden die  Schweissstücke 1 und 2 derart und so lange  zwischen den stromführenden Elektroden 4  und 5 der Widerstandsschweissmaschine zu-



  Process for the vacuum-tight welding of copper and iron parts by electrical resistance welding. The previously common type of welding of copper and iron parts by direct connection in the electrical resistance welding machine does not meet the requirements for a reliable vacuum-tight welding in mass production. Tests have now shown that it is possible, please include to obtain perfect vacuum-tight welds if, according to the present invention, before welding, the copper part is coated with another metal at the welding point and then the electrical welding is carried out.

    Iron and nickel have proven particularly useful as coating materials. The coating itself can be applied, for example, by electroplating or by metal spraying. In various applications, it is advantageous to sinter the coating onto the copper part in a high vacuum or in a protective gas atmosphere at high temperature before welding.



  In the following and with reference to the drawing, an embodiment of the method is described.



  The copper part 2 to be welded to the iron part 1 is for example steeled at the welding point 3 and sintered in a high vacuum. When welding, the weldments 1 and 2 are fed to the resistance welding machine between the current-carrying electrodes 4 and 5 for so long.

Claims (1)

sammengepresst, bis erfahrungsgemäss die va kuumdichte Schweissung vollzogen ist. PATENTANSPRUCH: Verfahren zum vakuumdichten Ver schweissen von Kupfer- mit Eisenteilen durch elektrische Widerstandsschweissung, dadurch gekennzeichnet, dass der Kupferteil vor der Schweissung an der Schweissstelle mit einem Überzug aus anderem Metall versehen und dann mit dem Eisenteil verschweisst wird. UNTERANSPRÜCHE: 1. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass der Überzug aus Eisen hergestellt wird. 2. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass der Überzug aus Nickel hergestellt wird. 3. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass der Überzug gal vanisch hergestellt wird. 4. pressed together until experience has shown that the vacuum-tight weld has been completed. PATENT CLAIM: Process for the vacuum-tight welding of copper and iron parts by electrical resistance welding, characterized in that the copper part is provided with a coating of other metal at the welding point before the welding and then welded to the iron part. SUBCLAIMS: 1. Method according to claim, characterized in that the coating is made of iron. 2. The method according to claim, characterized in that the coating is made of nickel. 3. The method according to claim, characterized in that the coating is made galvanically. 4th Verfahren nach Patentanspruch, da durch gekennzeichnet, dass der Überzug im Metallspritzverfahren hergestellt wird. 5. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass der Überzug ge sintert wird. 6. Verfahren nach Patentanspruch und Unteranspruch 5, dadurch gekennzeichnet, dass der Überzug im Vakuum gesintert wird. 7. Verfahren nach Patentanspruch und Unteranspruch 5, dadurch gekennzeichnet, dass der Überzug in Schutzgasatmosphäre ge sintert wird. Method according to claim, characterized in that the coating is produced using a metal spraying process. 5. The method according to claim, characterized in that the coating is sintered ge. 6. The method according to claim and dependent claim 5, characterized in that the coating is sintered in a vacuum. 7. The method according to claim and dependent claim 5, characterized in that the coating is sintered ge in a protective gas atmosphere.
CH256280D 1946-04-09 1946-04-09 Process for the vacuum-tight welding of copper and iron parts by electrical resistance welding. CH256280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH256280T 1946-04-09

Publications (1)

Publication Number Publication Date
CH256280A true CH256280A (en) 1948-08-15

Family

ID=4471592

Family Applications (1)

Application Number Title Priority Date Filing Date
CH256280D CH256280A (en) 1946-04-09 1946-04-09 Process for the vacuum-tight welding of copper and iron parts by electrical resistance welding.

Country Status (1)

Country Link
CH (1) CH256280A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072762B (en) * 1960-01-07 Jurid Werke G.m.b.H., Glinde über Hamburg-Bergedorf Application of point welding to the attachment of molded articles to support beams
US8070614B2 (en) 2006-08-23 2011-12-06 Neumayer Tekfor Holding Gmbh Connecting arrangement between a shaft journal and a joint part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072762B (en) * 1960-01-07 Jurid Werke G.m.b.H., Glinde über Hamburg-Bergedorf Application of point welding to the attachment of molded articles to support beams
US8070614B2 (en) 2006-08-23 2011-12-06 Neumayer Tekfor Holding Gmbh Connecting arrangement between a shaft journal and a joint part

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