Sms Demag Ag

Sms Schloemann-siemag Aktiengesellschaft

Sms Siemag Aktiengesellschaft

Rüdiger Holz

Andreas Ritter

Jürgen Seidel

Klaus Klamma

Konrad Schunn

Lothar Zwingmann

Holger Pulst

Arnulf Wurm

Klaus-Dieter Haberkamm

The invention relates to a method for the optimization of shift strategies, as a function of the strip width, for best possible usage of the advantages of CVC/CVCtechnology in operation of strip-edge oriented shifts in 4-/6-roller stands, comprising a pair of working rollers and a pair of support rollers for a 4-roller stand and, in addition, a pair of intermediate rollers for a 6-roller stand, whereby at least the working rollers and the intermediate rollers cooperate with devices for axial shifting, characterized in that selection of the shift position (VP), for the shifting working/intermediate rollers, is made as a function of strip width. The working/intermediate rollers are then positioned in various positions (P), relative to the strip edge and, within differing strip width ranges (B), the shift position (VP) of each roller is given by an incremental linear progressive function.

Optimised shift strategy as a function of strip width

A method for the strip-edge-oriented shifting of the intermediate rolls (') in a six-roll rolling mill comprising respectively a pair of workrolls (&#x2032;), intermediate rolls (&#x2032;) and backup rolls (&#x2032;), whereby at least the intermediate rolls (&#x2032;) and workrolls (&#x2032;) have devices for axial shifting cooperating with them and each intermediate roll (&#x2032;) has a barrel elongated by the amount of the CVC-shifting stroke and a one sided setback (x) in the region of the strip edge. The method is characterized in that the upper intermediate roll () is shifted in the direction of the drive side AS) and the lower intermediate roll (&#x2032;) is shifted in the direction of the service side (BS)&#x2014;or conversely&#x2014;relative to the neutral shift position (S=0 mm) symmetrically to the rolling mill center (y&#x2014;y) be respectively the same amount in the direction of their (x&#x2014;x).

Strip-edge-based displacement of intermediate rolls in six-high rolling stand

A device for influencing the profile of strip rolled in at least one roll stand includes adjusting units, bending units and possibly displacement units for the stand and spray beams adjacent the rolls of the stand for spraying cooling agent and/or lubricating agent onto the rolls, if necessary, in a controlled manner; the device further includes a regulating unit. Additional spray beams are provided adjacent the two end portions of the body of each roll, wherein the effective range of each additional spray beam extends from the respective end of the body of the roll into the area of the strip edge facing this end of the body of the roll.

Device for influencing the profile of rolled strip

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Neunkirchen, Germany

Rüdiger Holz