DE696978C - Process for electrical resistance projection welding - Google Patents
Process for electrical resistance projection weldingInfo
- Publication number
- DE696978C DE696978C DE1932A0067361 DEA0067361D DE696978C DE 696978 C DE696978 C DE 696978C DE 1932A0067361 DE1932A0067361 DE 1932A0067361 DE A0067361 D DEA0067361 D DE A0067361D DE 696978 C DE696978 C DE 696978C
- Authority
- DE
- Germany
- Prior art keywords
- electrical resistance
- projection welding
- welding
- resistance projection
- deformation
- 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
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
- B23K11/14—Projection welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zur elektrischen Widerstandsbuckel'-schweißung. Es ist bereits bekannt, dickere Bleche, flache Schmiedestücke o. dgl, mit ähnlichen Konstruktionsteilen ' mit Hilfe der elektrischen Widerstandsbuckelschweißung zu befestigen. Bei dieser bekannten Buckelschweißung wird so vorgegangen, daß eines oder beide der zu verschweißenden Teile vor dem Verschweißen mit Ausbeulungen versehen werden, mit denen die zu verbindenden Teile zu Beginn des Schweißvorganges aneinander zu liegen kommen. Diese Ausbeulungen! bilden Übergangsstellen für den Schweißstrom. Die Ausbeulungen werden in der Schweißmaschine zunächst unter geringem Elektrodendruck vorgewärmt und nach Erzielung genügender Schweißhitze unter Verschweißen mit erhöhtem Druck flächenglatt gedrückt. Diese Befestigungsart hat aber nicht durchweg befriedigt, da vielfach nach längerem Gebrauch Anrisse in der. geschweißten Naht aufgetreten sind.The invention relates to a method for electrical resistance projection welding. It is already known to use thicker sheets, flat forgings or the like similar construction parts' with the help of electrical resistance projection welding attach. In this known projection welding, the procedure is that one or both of the parts to be welded are provided with bulges before welding with which the parts to be joined together at the beginning of the welding process come to rest. These bulges! form transition points for the welding current. The bulges are first preheated in the welding machine under low electrode pressure and after they have been reached Sufficient welding heat pressed flat with increased pressure while welding. But this type of attachment has not entirely satisfied, as there are often cracks in the after prolonged use. welded Seam occurred.
Nach dem erfmdungsgiemäßen Verfahren zur elektrischen Widerstandsbuckelschweißung sollen nun die Buckel aus dem Werkstück nur so weit herausgedrückt werden, daß der Verformungsgrad, d. h. das Verhältnis der Bogenlänge des Buckels zu dessen Durch-According to the method according to the invention for electrical resistance projection welding should now be pushed out of the workpiece only so far that the Degree of deformation, d. H. the ratio of the arc length of the hump to its diameter
30 messer, nicht mehr als 5 o/o beträgt und vorzugsweise
etwas unter S 0/0 liegt. Es hat sich
'■') Von dem Patentsucher ist als der Erfinder angegeben worden: 30 knives, not more than 5 o / o and preferably slightly below S 0/0. It has
'■') The patent seeker stated as the inventor:
Karl Köhler in Berlin-Reinickendorf.Karl Köhler in Berlin-Reinickendorf.
nämlich herausgestellt, daß, falls1 ein Verformungsgrad von 5 o/o nicht überschritten wird, die mittels Buckelschweißung hergestellte Naht gegen mechanische Beanspruchungen am widerstandsfähigsten ist. Es wird nämlich hierdurch die Bildung von Rekristallisationszonen durch die Schweißwärme verhindert, die bekanntlich eine geringere Widerstandsfähigkeit gegen Ermüdungen besitzen. Im Vergleich zu höheren Verformungsgraden ergeben sich dann wesentlich herabgesetzte Schweißzeiten. Dias Verfahren hat infolgedessen, bei Massenherstellung angewendet, den Vorteil, daß durch Anwendung desselben eine beachtliche Verbesserung der Wirtschaftlichkeit neben ,einer höheren Zuverlässigkeit der geschweißten Verbindung im Vergleich zum bekannten Buckelschweißverfahren erreicht wird. Besonders vorteilhaft wird das erfindungsgemäße Verfahren zum Verbinden der zur Befestigung von Schienen dienenden Rippen- oder Hakenplatten mit eisernen Schellen benutzt.namely been found that, if 1, a degree of deformation of 5 o / o is not exceeded, the seam produced by means of projection welding to mechanical stresses is the most resistant. This prevents the formation of recrystallization zones due to the welding heat, which are known to have a lower resistance to fatigue. In comparison to higher degrees of deformation, the welding times are then significantly reduced. As a result, when used in mass production, the method has the advantage that, by using it, a considerable improvement in economic efficiency is achieved in addition to a higher reliability of the welded connection in comparison with the known projection welding method. The method according to the invention is particularly advantageously used for connecting the rib or hook plates used for fastening rails with iron clamps.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1932A0067361 DE696978C (en) | 1932-10-09 | 1932-10-09 | Process for electrical resistance projection welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1932A0067361 DE696978C (en) | 1932-10-09 | 1932-10-09 | Process for electrical resistance projection welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE696978C true DE696978C (en) | 1940-10-03 |
Family
ID=6944411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1932A0067361 Expired DE696978C (en) | 1932-10-09 | 1932-10-09 | Process for electrical resistance projection welding |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE696978C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975137C (en) * | 1941-06-26 | 1961-08-31 | Aeg | Process for the production of a spacer that is attached to the sheet metal of electrical machines by welding |
-
1932
- 1932-10-09 DE DE1932A0067361 patent/DE696978C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975137C (en) * | 1941-06-26 | 1961-08-31 | Aeg | Process for the production of a spacer that is attached to the sheet metal of electrical machines by welding |
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