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A method for measuring and aligning the width of rough-rolled slabs in hot rolling mills

A technology for slab and rough rolling, applied in the field of computer control of steel rolling, can solve problems such as inability to solve, and achieve the effects of avoiding malfunction, enhancing equipment performance, ensuring rolling quality and equipment safety

Inactive Publication Date: 2011-12-21
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the technical solutions of these two patent documents are not aimed at the above problems, so they cannot solve the problem of checking the slab through detection

Method used

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  • A method for measuring and aligning the width of rough-rolled slabs in hot rolling mills
  • A method for measuring and aligning the width of rough-rolled slabs in hot rolling mills
  • A method for measuring and aligning the width of rough-rolled slabs in hot rolling mills

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Embodiment 1

[0021] In this embodiment, the existing steel rolling mill with computer-controlled left and right guide plates is transformed and implemented. Pressure sensors with signal lines input to the computer are respectively installed on the inner sides of the left and right guide plates, and the computer controls the side guide plates according to the modified steps. , the specific control process is as follows figure 1 shown.

[0022] In actual operation, there are 2 steel coils, the steel coil IDs are 82376030100 and 82436030600 respectively, the steel types are both SPHC, and the original width of the slab delivered by the original incoming material is 1250mm. The actual measured width is about 1242.5mm, and the finished product width is required to be 1250mm. The actual temperature of the slab out of the furnace is 1160°C and 1174°C, and the original thermal width data of the slab predicted by the model are 1271.6mm and 1272.0mm. 82436030600 adopts the method of the present inv...

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Abstract

The invention relates to a method for measuring and aligning the width of a rough-rolled slab in a hot-rolling plant, and belongs to the technical field of rolling computer control. The main steps of the method are: 1. Control the left and right guide plates to reach the waiting position; 2. Control the left and right guide plates to move synchronously toward the rolling center line until they touch the slab; 3. When the left and right guide plates When the contact pressure between the guide plate on the right and the slab reaches a predetermined value, record the distance between them at this time; 4. Use the recorded distance value as the actual width measurement value of the slab for on-line control of the rolling position including the vertical roller; 5. , to control the left and right guide plates to return to the guide position. Adopting the method of the present invention not only enables the side guide plates that originally only functioned as guides to “slap” the slab to ensure its centering, but also can be used as a “detection” device to accurately measure the actual width of the slab to avoid data errors resulting in Therefore, the performance of the equipment is significantly enhanced with almost no increase in equipment investment.

Description

technical field [0001] The invention relates to a method for measuring and aligning the width of a rough-rolled slab in a hot-rolling plant, and belongs to the technical field of rolling computer control. Background technique [0002] Before the slab in the hot rolling mill is ready to enter the roughing mill for rolling, it needs to go through the following process: the slab is taken off the line from the continuous casting to the feeding roller table for verification, and the model (ie, the standard control program) issues the slab number and steel coil number Wait for a series of data to confirm the identity of the slab. Then the slab is pushed into the furnace by the steel pusher for heating and tracking in the furnace, and finally the hot slab is drawn out by the steel puller and placed on the discharge roller table for rolling. During this process, various reasons such as input errors and thermal deformation will cause the extracted slab to be inconsistent with the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/00B21B38/00B21B39/14
Inventor 谢向群张奇迅盛磊
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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