Mannesmann Aktiengesellschaft

Ulrich Menne

Ingo Von Hagen

Lothar Parschat

Fritz P Pleschiutschnigg

Michael Vonderbank

Tarek El Gammal

Peter Lorenz Hamacher

Dieter Stalleicken

Uwe Schmidt

Ulrich Hoffmann

Bernhard Vogelsang

An apparatus and a process for making semi-finished products in the form of ti metal bars having a width-gauge ratio of over 60 and a maximum sheet metal gauge tolerance of 2%. A metal profile is fed continuously and upwardly through a pool of melt material having the same composition as the metal profile so as to form a coated metal profile. The metal profile is fed at a rate which would result in a coated metal profile having a thickness of at least three times that of the uncoated metal profile. The coated metal profile is subjected to a smoothing pass between a pair of smoothing rolls when the mean temperature in the crystallized layer of the coated metal profile meets a given condition. The smoothing rolls are adjustably disposed inside a housing at a distance of 0.5 to 5 m from the melt pool surface.

Device for making semi-finished products

Process for making semi-finished products

An air hardening steel which is killed during casting used as material for manufacturing structural tubes for structural elements which are subjected to high mechanical loads, particularly for door reinforcements in the manufacture of automobiles. The steel is composed of in percent by weight:

Hot rolled and air hardened steel for manufacturing structural tubes and

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Hattingen, Germany

Ulrich Menne