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A Method of Improving the Width Accuracy of Strip Head and Tail during Hot Continuous Rolling Production

A technology for hot continuous rolling and strip steel, applied in the field of steel processing, can solve the problems of increasing the length, increasing the loss rate of the strip cutting head, and reducing the quality index of the finished product width.

Active Publication Date: 2016-06-01
CHENGDU ARITIME INTELLIGENT CONTROL
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Problems solved by technology

Since the repeated rolling of the strip by the roughing mill will increase the length and size of the strip head and tail in short of the width, this situation will increase the loss rate of the cut end of the strip and reduce the yield of the finished product. Width Quality Index

Method used

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  • A Method of Improving the Width Accuracy of Strip Head and Tail during Hot Continuous Rolling Production
  • A Method of Improving the Width Accuracy of Strip Head and Tail during Hot Continuous Rolling Production
  • A Method of Improving the Width Accuracy of Strip Head and Tail during Hot Continuous Rolling Production

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Embodiment Construction

[0013] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings.

[0014] refer to figure 1 , figure 2 , figure 1 Shown is a flow chart of an embodiment 100 of the method for improving the width accuracy of the head and tail of the strip during hot continuous rolling production of the present invention, figure 2 Shown is the hot rolling production process diagram. Embodiment 100 includes steps 101 to 103 as follows.

[0015] In step 101, four tracking points are marked on the head and tail of the steel strip 4 and the preset value of the roll gap of the vertical roller mill 2 corresponding to the tracking points.

[0016] In one embodiment of the present invention, the preset value Y of the vertical roll mill 2 roll gap Y of the tracking points S...

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Abstract

The invention discloses a hot-rolling strip steel head and tail width accuracy improving method. The method includes marking four tacking points at the strip steel head and tail and vertical rolling mill roll gap preset values corresponding to the tracking points; calculating the time for the tracking points reaching the vertical rolling mill; controlling the preset values of the roll gas values of the vertical rolling mill in the time points. The different portions of the strip steel head and tail reaching the vertical rolling mill are controlled, the roll gap values of the vertical rolling mill are different, and length of the width shortage portions of the strip steel head and tail and shortage size are reduced.

Description

technical field [0001] The invention relates to the technical field of iron and steel processing, in particular to a method for improving the width accuracy of the strip head and tail during hot continuous rolling production. Background technique [0002] In the strip hot rolling production, in order to ensure that the specifications of the delivered strip meet the requirements, it is necessary to cut off the head and tail of the strip that do not meet the size requirements. Since the repeated rolling of the strip by the roughing mill will increase the length and the size of the short section of the strip head and tail, this situation will increase the loss rate of the cut end of the strip and reduce the yield of the finished product. The width quality indicator. Contents of the invention [0003] The purpose of the present invention is to provide a method for improving the width accuracy of the strip head and tail during hot continuous rolling production, which can reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/72
Inventor 杨聪
Owner CHENGDU ARITIME INTELLIGENT CONTROL
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