Nexans

Kabelmetal Electro Gesellschaft MIT Beschrankter Haftung

Dieter Muller

Gerhard B Ziemek

Christian Frohne

Wolfram Klebl

Friedrich Schatz

Ernst Hoffmann

Douglas W Rowell

In a process for the continuous production of longitudinally seam-welded and corrugated metal tubes ( ), a metal band drawn off from a supply reel is formed into an open-seam tube, welded at its longitudinal edges, and the welded smooth tube ( ) corrugated. A withdrawal apparatus driven by an electric motor engages the smooth tube. The smooth tube ( ) is corrugated by means of a corrugation plate ( ) located in a corrugation head ( ) which can be driven rotationally. The corrugation head ( ) is driven directly by a hollow shaft motor ( ).

Process for the continuous production of longitudinally seam-welded and corrugated metal tubes

For the manufacture of heat exchanger tubes having a metal strip (tangential surface) welded to the surface of the tube, the metal strip is fastened to the surface of the tube by through-welding with welding current of alternating value.

Method and apparatus for manufacturing heat exchanger tubes

Growing community of inventors

Wedemark, Germany

Dieter Muller