Mannesmann Aktiengesellschaft

Hans Butz

Lothar Parschat

Gerd Diederich

Peter Wahls

Fritz-Peter Pleschiutschnigg

Hans Schrewe

Hans Gruner

Fritz P Pleschiutschnigg

Dietmar Lohse

Hans-Juergen Ehrenberg

Ulrich Siegers

Georg Hofmann

Engelbert Weins

Hans-Dieter Funderich

The invention is directed to an immersion casting pipe for feeding molten steel from a casting vessel into a mold having wide side walls and narrow side walls for the production of flat products. The immersion casting pipe has a pipe piece which adjoins the casting vessel and expands in cross section in the direction of the narrow side walls of the mold. The pipe piece is provided with a central base member at the lower end which allows for outlet openings for the melt. For the purpose of developing an immersion outlet which allows higher slab withdrawal speed of up to 6 m/min with slabs measuring 50 to 100 mm in thickness and 600 mm to 2000 mm in width, the inner wall of the portion of the immersion casting pipe which widens in cross section forms flow channels in conjunction with the opposite wall parts of the base member. The axes of the flow channels enclose an angle .alpha. between 10.degree. and 22.degree., where the smaller angle corresponds to a distance of approximately 600 mm between the narrow side walls of the mold and the larger angle corresponds to a distance of 2000 mm or more between the narrow side walls of the mold. The distance between the wide side walls of the mold is 50 to 100 mm.

Immersion casting pipe for thin slabs

Casting spout for metallurgical vessels

The roll has an inner axial flow space extending into conical flow spaces with wider ends facing away from each other. Cooling water is fed to and discharged from central axial bores in the roll, there being radial distributor and collecting ducts leading from these central bores to the widest diameter portions of the conical flow spaces.

Withdrawal roll in continuous casting machine

Continuously cast ingots are spray-cooled by a fanned-out flow of water which has been accellerated by pressurized air with an original nozzle direction parallel to the surface of the ingot and transversely to the direction of ingot withdrawal. The arrangement avoids cooling impediment on account of the Leiden frost phenomenon.

Spray cooling of continuously cast ingots

Growing community of inventors

Duisburg, Germany

Hans Butz