Linde Aktiengesellschaft

Gkss-forschungszentrum Geesthacht Gmbh

Linde Gmbh

Helmholtz-zentrum Geesthacht Zentrum Fur Material Und Kustenforschung Gmbh

Georg Wimmer

Reinhold Hölzl

Manfred Schönberger

Herbert Aigner

Jorge Fernandez Dos Santos

Christoph Seeholzer

Arne Roos

Juergen Scholz

Richard Wimmer

Karlmann Kanzler

Jürgen Scholz

Christian Michael Herwerth

Kati Schatz

Rolf Dahmen

The present invention relates to a method for connecting tubes () of a shell and tube heat exchanger () to a tube bottom () of the shell and tube heat exchanger (), wherein the tubes () and the tube bottom () are each made of aluminum or an aluminum alloy, and wherein the tubes () are connected to the tube bottom () by means of laser welding in a bonded manner.

Method for connecting tubes of a shell and tube heat exchanger to a tube bottom of the shell and tube heat exchanger

A method for producing a plate heat exchanger and the plate heat exchanger, particularly a soldered aluminium plate heat exchanger. In the method, a heat exchanger block is provided having a plurality of partition plates and edge strips arranged between the partition plates. A connection device is provided to be mounted on the heat exchanger block. A planar region for securing the connection device to the heat exchanger block is provided with at least one welded weld bead by means of a first weld. The connection device is welded onto the weld bead by means of a second weld. The welding method used for the first weld is a friction stir welding method.

Method for producing a plate heat exchanger using two welds, and a corresponding plate heat exchanger

The invention relates to a method for the joining of tube plates () and tubes () in a tube bundle heat transfer device with the help of a rotating friction tool. Here, the friction tool is rotatingly moved into the open end of a tube () surrounded by the tube plate () in the axial direction of said tube and pressed against the face of the tube () in the manner that the tube end () and the region of the tube plate () surrounding the tube end are plasticized and merge into a weld joint.

Method for joining tube plates and tubes as well as friction tool to carry out the method

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Tuessling, Germany

Georg Wimmer