Sms Meer Gmbh

Sms Group Gmbh

Thomas Nerzak

Thomas Daube

Meinert Meyer

Guido Sonnenschein

Uwe Plociennik

Hermann-Josef Klingen

Klaus Küeppers

Siegmund Bulert

Detlef Breunung

Friedhelm Schellscheidt

Hermann Josef Klingen

Frank Theobald

Mario Radschun

Eduard Stecklein

Klaus Küppers

Joerg Himmel

Annette Jobst

Jörg Himmel

In a method for the online determination of at least one rolling parameter when rolling a rolling material rolled along a rolling line in a rolling mill including at least two rolls on a roll stand, the rolling material is guided past or through at least one measuring device during the rolling, which interacts with a rolling material variable of the rolling material, the rolling material variable being changeable along the length of the rolling material, and outputs a measurement signal, wherein: (i) the measurement signal is transferred into the frequency space, and the rolling parameter is determined from the measurement signal transferred into the frequency space, and/or (ii) a frequency inherent in the change of the rolling material variable is determined from the measurement signal, and the rolling parameter is determined on the basis of the determined frequency.

Method for the online determination of at least one rolling parameter, and rolling mill with a device for the online determination of at least one rolling parameter

A measuring device that is able to function even in rough environments, for example under great heat or in environments in which water or steam is found, as is the case in rolling mills, among other environments, has a housing, a central measuring device that passes through the housing in a straight line, and a measuring coil that is disposed in the housing and encloses the measuring opening. The device has a coil carrier that is disposed in the housing radially outside of the measuring coil and carries the measuring coil.

Measuring device

The invention relates to a roll stand () as a constituent part of a roll stand group () in a high-speed wire mill, having at least one roll pair or roll ring pair () and a drive shaft () which is connected to a motor (), characterized in that each roll stand () of this roll stand group () is assigned a motor () and a drive shaft (), and the motor (), the drive shaft () and the at least one roll pair or roll ring pair () are arranged linearly with respect to one another.

Wire roll stand with individual drive

An elongated workpiece is treated, e.g. rolled, in a production system where treatment devices move the workpiece longitudinally in a horizontal travel direction and at a generally constant travel speed along a horizontal longitudinal path and a control computer is connected to the treatment devices. Straightness of the workpiece is measured by gripping the workpiece at a pair of longitudinally spaced supports, applying tension to a longitudinally extending horizontal portion of the workpiece between the supports, and continuously moving the workpiece in the travel direction at the travel speed with a lower surface of the portion substantially unsupported. At least periodically a vertical spacing is measured between the portion and a straight longitudinal reference line extending in the direction between the supports parallel to the workpiece at the supports. The vertical-spacing measurement are fed to the computer for use controlling the devices.

Measuring straightness of an elongated rolled workpiece

A system for cooling a hot rail of rail steel to a fine perlitic or ferritic or perlitic/ferritic structure has a plurality of separate cooling modules with independently adjustable cooling parameters. The rail is guided downstream through the modules of the cooling stretch and through intermediate zones between the modules so as to cool the surface of the rail in each of the modules and to subject the rail to destressing or stress relief between the modules. Sensors in each of the intermediate zones detect the actual surface temperature of the rail in the respective zones, and a controller connected to the modules and to the sensors varies the cooling parameters of the cooling modules in dependence on the detected temperatures in the respective upstream zones to ensure a defined temperature in the rail that lies above a critical temperature at which bainitic structure components are formed.

System for cooling shape-rolled rails

In order to obtain a fine-lamellar perlite structure in the edge region of the heads of rails (), especially hot-rolled rails for carriageways or railways, by specific thermal treatment during cooling from the rolling heat without the formation of bainite, precooling () occurs in order to achieve a core temperature of approximately 750-850&#xb0; C., and the temperature of the more intensively cooled edge region is raised by intermediate heating () to at least said core temperature and finally cooled ().

Method and system for thermal treatment of rails

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Gelsenkirchen, Germany

Thomas Nerzak