Didier-werke Ag

Zircoa, Inc.

Dider Werke Ag

Didier-weke Ag

Raimund Bruckner

Hans Rothfuss

Daniel Grimm

Ernst Luhrsen

Ullrich Hintzen

Steve Lee

Manfred Winkelmann

Peter Keutgen

Jose Gimpera

Rudiger Grau

Herbert Metzger

Josef Seeger

Karl-Heinz Spitzer

Albert Ott

Seyed Masoud Hashemi

Axel Eschner

Andreas Schuler

Manfred Oberbach

Wilhelm Langenfeld

Jurgen Plath

Martin Wiesel

Hans Leistner

Dieter Stusser

Manfred Berndt

Ulrich Nebe

Bernhard Schiefer

Ralph Searle

Ibrahim Mentesh

Edward Levadnuk

Rolf Waltenspuhl

Andreas Donner

Rick Ardell

Ceramic composite structure and process for the production thereof

A refractory guide member and a method for heating the refractory guide member by use of an inductor, where at least one collateral electromagnetic field located in a region spaced apart from the inductor is generated by the inductor. The mold part is made of an electrically conductive layer with several insulating interrupting slots for the controlled deflection of eddy currents from a main field generated by the inductor into a region spaced apart from the inductor.

Method for the inductive heating of a refractory mold part as well as

In a method of operating an inductor of a tapping device of a melt vessel, the inductor couples inductively during a working phase with an electrically conductive shaped component and is cooled by means of a fluid. The inductor is electrically decoupled and cooled by means of a fluid in another working phase.

Method of operating an inductor

Inductor in a fusion tank

Assembly of tapping device and inductor therefor

A method and an apparatus for inductively heating a refractory shaped member provided with an internal space, particularly for a metallurgical vessel, enable as rapid, uniform heating of the shaped member as possible. An inner inductor is introduced into the internal space, the shaped member is heated from the interior by such inductor, and the inductor then is removed from the internal space.

Method and apparatus for inductively heating a refractory shaped member

Process for the inductive heating of a fireproof molding and a suitable

Regulation and closure apparatus for a metallurgical vessel

Closure and regulation apparatus for a metallurgical vessel

An immersion nozzle includes an immersion zone inserted into a long-thin mold cavity of a mold. A discharge channel extends through the nozzle for discharging molten metal into the mold cavity. The discharge channel includes an inlet region, an outlet region including a portion passing through the immersion zone, and a pool-forming chamber between the inlet region and the outlet region at a location adjacent the immersion zone. The portion of the outlet region of the discharge channel that extends through the immersion zone is widened and has a configuration to approximate the cross-sectional configuration of the mold cavity. The outlet region has, extending from the chamber in a direction of material flow, a configure approximately corresponding to the configuration of the portion of the outlet region through the immersion zone.

Assembly of mold and immersion nozzle with improved discharge channel

A method of casting molten material into a strip-shaped product having substantially intended final dimensions that first supplies molten material into the interior of a vessel having a casting nozzle connected thereto. The nozzle is formed of a refractory ceramic material and has a passage extending therethrough from an inlet opening connected directly to the interior of the vessel to an outlet opening. The nozzle is oriented relative to the vessel so that the outlet opening is positioned at a location higher than the inlet opening. Molten material passes from the vessel interior directly through the inlet opening and into the passage until an upper level of molten material in the passage is the same as an upper level of molten material in the vessel interior and below the outlet opening. Solidification of the molten material is commenced in the passage, thereby forming solidifying material. The solidifying material is moved through the passage in a direction toward the outlet opening, during which the material further solidifies. The thus further solidified material is discharged from the outlet opening by imparting to the nozzle, and thereby to the material, ultrasonic vibrations including at least one vibration component in the direction toward the outlet opening.

Method and device for the casting of molten material to nearly final

A process for heating a ceramic shaped part by providing a ceramic shaped part which at ambient temperature has a homogeneously distributed carbon skeleton, and heating the shaped part inductively.

Process for inductive heating of ceramic shaped parts

An annular space is formed between the opening of a refractory lining in a metallurgical vessel and a shaped element to be joined to the refractory lining in the opening. A joint packing is provided to be packed in the annular space. The joint packing is an annular, deformable, prefabricated packing adapted to the volume or the shape of the annular space. The joint packing is fixable in position in either the opening of the refractory lining or on the shaped piece when the joint arrangement is assembled. Preferably, the joint packing comprises a packing compound provided in a sleeve.

Refractory joint packing for an annular gap in a metallurgical vessel

A regulating device for regulating the flow of molten metal from metallurgical vessel includes an inner tubular part which is fixed to the metallurgical vessel and defines at least one through-hole, and a movable outer tubular part rotatably and/or slidably mounted to the metallurgical vessel and extending around the tubular inner part. The tubular outer part terminates at a bottom edge constituted by a contiguous land extending around the tubular inner part. The tubular outer part can be slid and/or rotated between open and closed positions at which the through-hole of the tubular inner part is opened and closed, respectively. To prevent plugs of molten metal from hardening in the at least one through-hole of the tubular inner part, the bottom edge of the tubular outer part is designed so that a portion of the land thereof passes across the at least one through-hole when the tubular outer part is moved between the open and closed position. More specifically, at the closed position, a portion of the land constituting the bottom edge is located to one side of the through-hole with respect to the longitudinal axis of the tubular inner part while, at the open position a portion of the land constituting the bottom edge is located to the other side of the through-hole with respect to the longitudinal axis of the tubular inner part.

Regulating device for regulating the flow of molten metal from a

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Engenhahn, Germany

Raimund Bruckner