EP 0934132 B1 20020626 - DIFFUSION WELDING PROCESS AND DEVICE FOR JOINING SHEET METAL PARTS
Title (en)
DIFFUSION WELDING PROCESS AND DEVICE FOR JOINING SHEET METAL PARTS
Title (de)
DURCHSETZFÜGEVERFAHREN UND -VORRICHTUNG ZUM VERBINDEN VON BLECHTEILEN
Title (fr)
PROCEDE ET DISPOSITIF DE SOUDAGE PAR DIFFUSION UTILES POUR JOINDRE DES PIECES EN TOLES METALLIQUES
Publication
Application
Priority
- DE 19714129 A 19970405
- EP 9801970 W 19980403
Abstract (en)
[origin: WO9845065A1] In a diffusion welding process for joining superimposed sheet metal parts by welding, part of the material of the metal sheets is locally upset by means of a stamp and a die perpendicularly to the plane of the metal sheets, causing the material of the sheet metal parts to yield and diffusion welding the sheet metal parts at a weld. In order to achieve a sufficiently solid weld even when the parts to be joined are made of materials with a particular tendency to hardening at low temperatures or pre-hardened materials, the parts of the metal sheet surrounding the weld are pressed onto the die during welding with a force which is sufficient to prevent the material from yielding against the active direction of the stamp.
IPC 1-7
IPC 8 full level
B21D 39/03 (2006.01)
CPC (source: EP)
B21D 39/031 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL PT SE
DOCDB simple family (publication)
WO 9845065 A1 19981015; AT E219708 T1 20020715; CA 2257251 A1 19981015; CN 1222872 A 19990714; DE 19714129 A1 19981015; DE 59804575 D1 20020801; DK 0934132 T3 20020930; EP 0934132 A1 19990811; EP 0934132 B1 20020626; ES 2179494 T3 20030116; JP 2000511470 A 20000905; PT 934132 E 20021129; RU 99100054 A 20001127
DOCDB simple family (application)
EP 9801970 W 19980403; AT 98922642 T 19980403; CA 2257251 A 19980403; CN 98800441 A 19980403; DE 19714129 A 19970405; DE 59804575 T 19980403; DK 98922642 T 19980403; EP 98922642 A 19980403; ES 98922642 T 19980403; JP 54236398 A 19980403; PT 98922642 T 19980403; RU 99100054 A 19990105