Sms Schloemann-siemag Aktiengesellschaft

Sms Siemag Aktiengesellschaft

Sms Schloemann-siemag Aktiengesellshaft

Manfred Albedyhl

Meinert Meyer

Ingo Schuster

Fritz-Peter Pleschiutschnigg

Wolfgang Rohde

Michael Minnerop

Peter Heinrich

Friedrich Wilhelm Hollmann

Hartmut Hille

Alexander Svagr

Klaus K&uuml;ppers

Bruno B&ouml;hmer

Egon Sippel

Hermann Bahr

Karl Otto Schmidt

Ursula Kallenborn-Weber

Volker Hille

Berthold Schulze

Egon Foermer

A method for producing hot-rolled strip from austenitic stainless steels. In a first step, a cast product is subjected to a rolling operation in a rolling mill with a finishing train, and, in a second step, a heat treatment is carried out to prevent susceptibility to corrosion, especially intergranular corrosion due to chromium carbide precipitation. To establish the final rolling temperature (T), a run-in temperature (T) of the cast product into the finishing train of the rolling mill that is above 1,150&#xb0; C., and preferably above 1,200&#xb0; C., is established by a multistage heating process, especially a two-stage heating process, which comprises a preheating stage and an intensive heating stage, and the heat treatment is carried out by directly utilizing the rolling heat.

Method and installation for producing hot-rolled strip from austenitic stainless steels

An installation for producing hot-rolled strip from austenitic stainless steels; including a continuous casting machine and a rolling mill with a temperature adjustment system and a cooling system for cooling the rolling stock. The temperature adjustment system includes an installation having a furnace for preheating the cast slab to =1,150&#xb0; C. and an installation for intensive heating including an inductive heating zone for adjustment of the run-in temperature of the cast slab into the finishing train of the rolling mill to above 1,150&#xb0; C., for establishing a final rolling temperature to carry out the heat treatment by direct exploitation of the rolling heat. The cooling system includes a device for quenching the rolling stock to below 600&#xb0; C. The temperature adjustment system includes only a first descaling system between the preheating installation and the intensive heating installation.

Method and installation for producing a hot rolled strip from austenitic rust-resistant steels

A method of cooling on a cooling bed hot-rolled steel sections from rolling heat, wherein the sections, particularly rails, have section parts of different masses arranged at a distance from each other over the cross-section of the section, and an apparatus for carrying out the method. Initially, the heat quantities to be proportionally removed from the different section parts in dependence on their mass and temperature and the quantity of cooling medium required for this removal are determined and computed by using measuring equipment together with a computing unit by means of a computer program. Subsequently, cooling of the different section parts or their masses is carried out in a controlled manner in such a way that the section parts reach with as little time delay as possible the transformation line A /A during the decomposition of the gamma-mixed crystal into ferrite and/or pearlite while releasing the transformation heat.

Method and apparatus for cooling hot-rolled sections

The invention relates to a pig casting machine comprising at least one endless conveyor belt ( ), on which pig casting molds ( ) are fixed, for conveying pig casting molds from a casting station ( ) to a pig removal station and vice versa, wherein each pig casting mold is filled with molten metal as it passes through the casting station with the mold cavity facing upwards, in addition to a device for cooling the pig casting molds before, during and/or after casting, wherein the pig casting molds are embodied having a thin wall. According to the invention, in order to increase output and to be able to cast heavy metals in such a pig casting machine, the pig casting molds ( ) are designed to receive molten metal at a melting temperature above 1,000&deg; C.

Pig casting machine

A universal roll stand includes two vertical housings each being composed of a single piece, upper and lower transverse girders arranged above and below the vertical housings and lateral support projections for receiving vertical rolls. Tie rods are guided by the vertical housings and the transverse girders. Crossheads are insertable into recesses of the lateral support projections. A rigid universal stand is formed by connecting and screwing together the two vertical housings through the crossheads and the upper and lower transverse girders with the tie rods.

Multipart roll stand

A production plant for producing hot-rolled flat products includes a rolling train composed of a plurality of roll stands, a run-out table with devices for cooling the hot strip, and subsequently arranged coiling machines for coiling the strip. A compact deformation stage in the form of a rolling train with one to four roll stands is arranged following the reeling unit of a conventionally constructed hot-rolled wide strip train. This rolling train is specifically constructed for the deformation in the ferritic range.

Hot strip production plant for ferritic rolling and method of producing

A method for cooling of profiled rolled material hot rolled in roll stands, especially rails on a cooling bed by natural convection or by forced air cooling, which includes conveying the rails across the cooling bed with the rail heads oriented downwards. The apparatus for effecting the method includes a cooling bed having support elements which support the rails in a suspended state with the rail heads oriented downwards.

Method of and arrangement for cooling of hot rolled sections in

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Mettmann, Germany

Manfred Albedyhl