Transverse multi-section crossed work roller plate shape regulating and controlling method of steel strip rolling mill and regulating and control device thereof

Abstract

The invention relates to a transverse multi-section crossed work roller plate shape regulating and controlling method of a steel strip rolling mill and a regulating and control device thereof. The regulating and controlling method is characterized in that upper and lower work roller inlets and outlets are provided with 3 to 5 roller bending force exerting points in the axial direction of the rolling roller; inlet and outlet active roller bending force Fi and passive roller bending force Fd are in asymmetric malposition distribution; the active roller bending force Fi and the passive roller bending force F are in asymmetric malposition distribution; the roller bending direction is vertical to a rolling roller and is parallel to the rolling plane, or the included angle of the roller bending direction and the rolling plane is smaller than 10 degrees; and a transverse multi-section crossed work roller plate shape regulating and controlling device consists of a lining roller, a cylinder head, a lining roller frame, a roller bending cylinder block, a push-pull cylinder, a support frame and a protecting plate. The invention has the advantages that the design is reasonable, the structure is compact, the simple plate shape can be regulated and controlled, the complicated plate shape can also be regulated and controlled, simultaneously, a work roller is transversely provided with a side support, the transverse bending of the roll roller can be effectively avoided on the basis of reducing the roller diameter, and the plate shape regulation and control becomes very convenient.

Description

technical field [0001] The invention belongs to strip steel rolling mill equipment, and in particular relates to a method for adjusting and controlling plate shape of a strip rolling mill with transverse multi-segment crossing work rolls and a regulating device thereof, which are suitable for a thin strip rolling production line. Background technique [0002] As we all know, with the progress and development of rolling methods, many methods for adjusting the shape of the strip have been produced in the field of thin strip production. Such as the CVC method of changing the shape of the roll gap through the roll shape curve, the HC and UC method of changing the shape of the roll gap by bending rolls and shifting rolls, the PC method of changing the shape of the roll gap through roll crossing, and changing the roll gap by segmental cooling The precise segmental cooling method of the slit shape, etc. Most of these methods change the shape of the roll gap perpendicular to the di...

AI Technical Summary

Problems solved by technology

Most of these methods change the shape of the roll gap perpendicular to the direction of the strip, and the bending force is mostly along the direction of the rolling force. Only the PC technology is a method of changing the shape of the roll gap through the transverse crossing of the rolls, and then controlling the shape of the strip. However, the PC method can only change the overall convexity of the strip, and is powerless to the local convexity and local shape of the strip.

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