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Optimised shift strategy as a function of strip width and rolling machine using the method

A technology of moving strategy and bandwidth, applied in the direction of metal rolling stand, metal rolling mill stand, metal rolling, etc., can solve problems such as unfavorable load distribution, and achieve the effect of reducing deformation

Active Publication Date: 2010-05-26
SMS DEMAG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, of course, the axial movement of the rollers has a negative effect on the load distribution in the corresponding contact joint

Method used

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  • Optimised shift strategy as a function of strip width and rolling machine using the method
  • Optimised shift strategy as a function of strip width and rolling machine using the method
  • Optimised shift strategy as a function of strip width and rolling machine using the method

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Experimental program
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Effect test

Embodiment Construction

[0032] figure 1 Schematic representation of the appearance and geometrical arrangement of a one-sided backgrinding zone d in the barrel edge region of the work rolls / intermediate rolls 10, 11, a single-sided backgrinding zone d is described in detail in DE 100 37 004 A1 The anti-wear zone, as it is used here, is shown in a drawing.

[0033] The length l of the one-sided grinding zone d is divided into two adjacent regions a and b in the region of the barrel edges of the work rolls / intermediate rolls 10 , 11 . In the first part a of the interior, at point d 0 Starting at , the anti-wear amount y(x) follows the circle equation (l-x) 2 +y 2 = R 2 , R is the radius of the roll. Using the marked coordinates x and y for part a, an anti-wear amount y(x) is obtained as:

[0034] Part a:=(R 2 -(R-d) 2 ) 1 / 2 y(x)=R-(R 2 -(l-x) 2 ) 1 / 2

[0035] If a minimum necessary diameter reduction 2d is achieved, which depends on the external boundary conditions (rolling force and res...

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PUM

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Abstract

The invention relates to a method for the optimisation of shift strategies, as a function of the strip width, for best possible usage of the advantages of CVC / CVC<plus >technology 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, characterised 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.

Description

technical field [0001] The invention relates to a method for optimizing the movement strategy as a function of the bandwidth for optimum utilization of the CVC / CVC when working with edge-oriented movements in 4- / 6-roll rolling stands + Advantages of the process, said roll stands each include a pair of work rolls and backup rolls, and in a 6-roll stand there is an additional pair of intermediate rolls, wherein at least the work rolls and the intermediate rolls are connected to the The devices work together and each of the work rolls / intermediate rolls has a roll body with an extended CVC-travel stroke, with one-sided counter-grinding zones in the edge region of the roll body. Background technique [0002] The quality requirements for cold-rolled strip in terms of plate thickness tolerance, achievable final thickness, strip profile, strip flatness and surface etc. have been increasing in the past. The diversity of products in the cold-rolled sheet market has also resulted in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B13/14B21B37/40
CPCB21B13/142B21B37/40B21B13/14B21B37/28
Inventor A·里特R·霍尔茨
Owner SMS DEMAG AG