DE2135667A1 - Electron beam welding - wth prevention of seam rupture - Google Patents

Electron beam welding - wth prevention of seam rupture

Info

Publication number
DE2135667A1
DE2135667A1 DE19712135667 DE2135667A DE2135667A1 DE 2135667 A1 DE2135667 A1 DE 2135667A1 DE 19712135667 DE19712135667 DE 19712135667 DE 2135667 A DE2135667 A DE 2135667A DE 2135667 A1 DE2135667 A1 DE 2135667A1
Authority
DE
Germany
Prior art keywords
electron beam
beam welding
wth
prevention
transformation
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.)
Pending
Application number
DE19712135667
Other languages
German (de)
Inventor
Karl Dr Ing Schreck
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DE19712135667 priority Critical patent/DE2135667A1/en
Publication of DE2135667A1 publication Critical patent/DE2135667A1/en
Pending 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
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/0033—Preliminary treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The rupture of electron beam welded thick-walled material which can be hardened by martensitic transformation, is prevented by pre-heating the material to be welded to 300-600 degrees C. This temp. is sufficient to depress the martensitic transformation and region of intermediate transformation.

Description

Verfahren zum Herstellen von WerkstUcken mittels Elektronenstrahlschweißung Die Erfindung bezieht sich au; ein Verfahren zum Herstellen von Werkstilcken aus dickwandigen, umwandlungshärtenden Bauteilen mittels Elektronenstrahlschwe ißung. Process for the production of workpieces by means of electron beam welding The invention relates to au; a method for the production of Werkstilcken thick-walled, transformation-hardening components by means of electron beam welding.

Es ist bekannt (DT-OS 1 565 614), Kurbelwellen für Hubkolben-Brennkraftmsechinen aus einzelnen Teilen mittels Elektronenstrahlschweißung herzustellen. Das Elektronenstrahlsohweißverfahren ist für die Herstellung vön Werkstücken besonders geeignet, die wegen ihrer verwickelten Form zweckmäßigerweise aus einzelnen Bauteilen zusammengesetzt werden und aufgrund ihrer Belastung hohe Anforderungen an die Güte der Schweißnaht stellen. In solchen Fällen erlaubt das Elektronenstrahlschweißverfahren, daß die Bauteile fertig bearbeitet und wärmebehandelt werden, bevor sie zusammengefügt werden.It is known (DT-OS 1 565 614), crankshafts for reciprocating internal combustion engines produced from individual parts by means of electron beam welding. The electron beam welding process is particularly suitable for the production of workpieces, which because of their intricate Form expediently assembled from individual components and due to Their load place high demands on the quality of the weld seam. In such In some cases, the electron beam welding process allows the components to be finished and heat treated before they are joined together.

Beim ELektronenstrahlschweißen dickwandiger Bauteile, bei denen während oder nach dem Schweißen eine Umwandlungshärtung infolge Martensitbildung entsteht, kann es im Bereich der Schweißnaht zu Rißbildungen kommen.When electron beam welding thick-walled components where during or transformation hardening after welding due to martensite formation occurs, cracks can form in the area of the weld seam.

Der Erfindung liegt die Aufgabe zugrunde, die erwähnten Rißbildungen zu vermeiden. Sie wird erfindungsgemäß bei einem Verfahren der eingangs beschriebenen Art durch Vorwärmung der Bauteile auf eine Temperatur gelöst, die die Martensitbildung und den unteren Bereich der Zwischenstufenumwandlung unterdrücken.The invention is based on the object of the crack formations mentioned to avoid. According to the invention, in a method it is described at the outset Kind of solved by preheating the components to a temperature that the martensite formation and suppress the lower range of the interstage conversion.

Durch das Vorwärmen der zu verschweißenden Teile erfolgt eine Trennung zwischen Schrumpf- und Umwandlungsspannungen, wodurch die Rißbildung vermieden wird. Dabei wird zweckmäßigerweise in Abhängigkeit von der Legierung eine Temperatur swischen 3000 und 60000 gewählt.The parts to be welded are preheated to separate them between shrinkage and transformation stresses, which prevents cracking. A temperature is expediently swiped depending on the alloy 3000 and 60000 elected.

Claims (2)

P a t e n t a n s p r ü c h e :P a t e n t a n s p r ü c h e: 1. Verfahren zum Herstellen von Werkstücken aus dickwandigen, umwandlungshärtenden Bauteilen mittels Elektronenstrahlschweißung, gekennzeichnet durch eine Vorwärmung der Bauteile auf eine Temperatur, die die Martensitbildung und den unteren Bereich der Zwischenstufenumwandlung unterdrücken.1. Process for the production of workpieces from thick-walled, transformation-hardening Components by means of electron beam welding, characterized by preheating of the components to a temperature that promotes martensite formation and the lower range suppress the interstage conversion. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Temperatur zwischen 3000 und 60000 liegt.2. The method according to claim 1, characterized in that the temperature is between 3,000 and 60,000.
DE19712135667 1971-07-16 1971-07-16 Electron beam welding - wth prevention of seam rupture Pending DE2135667A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712135667 DE2135667A1 (en) 1971-07-16 1971-07-16 Electron beam welding - wth prevention of seam rupture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712135667 DE2135667A1 (en) 1971-07-16 1971-07-16 Electron beam welding - wth prevention of seam rupture

Publications (1)

Publication Number Publication Date
DE2135667A1 true DE2135667A1 (en) 1973-01-25

Family

ID=5813941

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712135667 Pending DE2135667A1 (en) 1971-07-16 1971-07-16 Electron beam welding - wth prevention of seam rupture

Country Status (1)

Country Link
DE (1) DE2135667A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045986A1 (en) * 1980-08-13 1982-02-17 BBC Aktiengesellschaft Brown, Boveri & Cie. Method for the crack-free energy-beam welding of high-temperature resistant moulding parts
FR2719611A1 (en) * 1994-05-09 1995-11-10 Technip Geoproduction Assembling strut section of oil platform support leg
FR2719615A1 (en) * 1994-05-09 1995-11-10 Technip Geoproduction Assembling support leg strut sections of oil platform
EP0693593A1 (en) * 1994-07-19 1996-01-24 Technip Geoproduction Method for assembling very long parts of sheet metal girders for the legs of an oilplatform
WO1998010884A1 (en) * 1996-09-13 1998-03-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for beam welding of hardenable steels by means of short-time heat treatment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045986A1 (en) * 1980-08-13 1982-02-17 BBC Aktiengesellschaft Brown, Boveri & Cie. Method for the crack-free energy-beam welding of high-temperature resistant moulding parts
FR2719611A1 (en) * 1994-05-09 1995-11-10 Technip Geoproduction Assembling strut section of oil platform support leg
FR2719615A1 (en) * 1994-05-09 1995-11-10 Technip Geoproduction Assembling support leg strut sections of oil platform
EP0693593A1 (en) * 1994-07-19 1996-01-24 Technip Geoproduction Method for assembling very long parts of sheet metal girders for the legs of an oilplatform
US5607259A (en) * 1994-07-19 1997-03-04 Technip Geoproduction Process for assembling long sections of booms of support legs of an oil platform
WO1998010884A1 (en) * 1996-09-13 1998-03-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for beam welding of hardenable steels by means of short-time heat treatment
US6365866B1 (en) 1996-09-13 2002-04-02 Fraunhofer-Gesellschaft zur Föderung der angewandten Forschung e.V. Method for beam welding of hardenable steels by means of short-time heat treatment

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