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Verfahren zum Herstellen von roehrenfoermigen Rohlingen aus Fein- oder Feinstblech

Process for the production of tube-shaped blanks made of lattens (thin sheet) and extra lattens
 
: Buechler, A.; Krause, V.; Ollier, B.

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Frontpage ()

DE 1993-4339661 A: 19931122
DE 1993-4339661 A: 19931122
DE 4339661 C2: 19960926
B23K0026
Deutsch
Patent, Elektronische Publikation
Fraunhofer ILT ()

Abstract
A process is known for the production of tube-shaped blanks made of lattens (thin sheet) or extra lattens, in particular for the production of cylindrical can blanks or can body blanks, by which two longitudinal edges of a preshaped sheet are aligned with each other and positioned in relation to a focusing area of a laser arrangement and finally these aligned longitudinal edges are welded together by applying laser radiation to form a longitudinal seam. In order to specify a process for the production of tube-shaped blanks made of lattens or extra lattens in order to avoid the disadvantages of resistance forge welding, and on the other hand to permit welding speeds of over 100 m/min with regard to laser welding processes, the welding operation is performed using an elongated diode laser beam in the focusing region, the length of the beam corresponding to a multiple of its width in the focusing region and said welding operation being performed from the outside and/or inside.

: http://publica.fraunhofer.de/dokumente/PX-38883.html