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Method for determining a rolling-material velocity

A technology of rolling speed and rolling stock, which is applied in the field of measuring the rolling stock speed on the discharge side of the rolling mill stand, and can solve the problems of insufficient measurement results and interference.

Active Publication Date: 2014-06-18
PRIMETALS TECH GERMANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

proposed that these known measurement methods only provide insufficient measurement results and are subject to corresponding disturbances

Method used

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  • Method for determining a rolling-material velocity
  • Method for determining a rolling-material velocity
  • Method for determining a rolling-material velocity

Examples

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Embodiment Construction

[0043] figure 1 A detail of the rolling mill 2 is shown, namely the rolling stand 4 , in which a rolling stock 6 is rolled by means of rolls 8 . Rolled piece 6 is based on the thickness h of the incoming rolled piece 0 and the rolling speed v on the feed side 0 is transferred to the rolling mill stand 4. After the rolling process is completed, the rolling piece 6 moves at the actual rolling piece speed v on the discharge side 1 and the thickness of the outgoing rolled piece h 1 Leave mill stand 4. During the rolling process, the roll 8 runs at a rolling speed v W rotate. Rolling piece speed v on the discharge side W cannot be detected with sufficient reliability. Therefore, the rolling speed is modeled as the rolling speed v W The product v' with the actual forward slide s 1 . should also pass the base value s G and correction value s K The sum adjusts this forward slip more precisely.

[0044] The rolling stand 4 is equipped with a mass flow controller 10 which ...

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PUM

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Abstract

In a method for determining an outlet-side rolling-material velocity (v1) from a roll velocity (vw) and a forward slip (s') associated therewith in a roll stand (4) having a mass flow controller (10) that processes the rolling-material velocity (v1), the forward slip (s') is calculated from a base value (sG) and a correction value (sK), and the correction value (sK) is determined using a measured value (M) determined during the rolling process.

Description

technical field [0001] The invention relates to a method for determining the velocity of a rolling stock on the discharge side in a rolling stand. Background technique [0002] Hot rolling means, for example, that hot ingots or billets are produced into plates or strips in several passes. Usually, when passing through each pass, the rolling stock is rolled to the target thickness specified in the pass plan (Stichplan). The rolling mill involved here can be a reversing rolling mill or a continuous rolling mill. [0003] In order to obtain the desired target thickness on the rolling mill stand, the rolling gap of the stand must be properly set. This setting can be effected by an adjustment system, which generally adjusts the upper rolling assembly relative to the pass line of the rolling mill. The adjustment system operates with hydraulic-pneumatic or electro-mechanical screws or a combination of both. [0004] Initially, the target value for the rolling gap is given by th...

Claims

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Application Information

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IPC IPC(8): B21B37/46
CPCB21B38/00B21B37/46B21B2275/06
Inventor 汉斯-约阿希姆·费尔克尔
Owner PRIMETALS TECH GERMANY