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Cold-rolled thin strip steel shape control method

A technology of shape control and thin strip steel, applied in the direction of contour control, metal rolling, metal rolling, etc., can solve the problem of poor control effect of thin strip steel, achieve the elimination of uneven plastic elongation strain difference, and efficient regulation , The effect of ensuring the quality of strip steel

Active Publication Date: 2019-03-05
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is used to solve the problem that the existing flatness control method is not effective for thin strip steel control

Method used

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  • Cold-rolled thin strip steel shape control method
  • Cold-rolled thin strip steel shape control method
  • Cold-rolled thin strip steel shape control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0066] Taking a cold rolling mill as an example, the process of the present invention to control the shape of the strip through post tension will be introduced in detail below. In this embodiment, the induction heating coil is selected as the post tension control device.

[0067] 1. Above the strip near the load roll gap at the entrance of the rolling mill, 2 rows of induction heating coils are arranged along the width direction of the strip. In order to ensure that the heating area of ​​the induction heating coil can evenly cover the entire width of the strip, 2 rows of induction heating coils staggered, such as figure 2 shown;

[0068] 2. The shape detector at the exit of the rolling mill detects the shape of the strip in real time. If there is no shape defect in the strip at the exit of the rolling mill, that is, when the elongation is evenly distributed in the width direction, all the induction heating coils are turned off, such as figure 2 shown.

[0069] 3. When the...

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Abstract

The invention relates to a cold-rolled thin strip steel shape control method. The cold-rolled thin strip steel shape control method comprises the steps that (1) strip steel is divided into n sectionsin the width direction, and each section is provided with a back strain adjusting controlling device; (2) if it is detected that a shape defect exists, the back strain adjusting controlling device inthe corresponding position is started; and if no shape defects exists, all the back strain adjusting controlling devices are stopped. According to the cold-rolled thin strip steel shape control method, based on the relation between back strain and extension strain, by adjusting distribution of the back strain of the strip steel in real time, the uneven plastic extension strain difference, generated in the width direction, of the strip steel is eliminated, and the shape defect is overcome. The problem that through an existing shape control mode, the thin strip steel control effect is poor is solved.

Description

technical field [0001] The invention relates to the technical field of strip cold rolling, in particular to shape control of cold-rolled thin strip steel, and in particular to a shape control method of cold-rolled thin strip steel. Background technique [0002] The technology originates from on-site production practice, and especially relates to a method suitable for controlling the strip shape by tension after the cold rolling process of thin strip steel. The retrieval keywords of the present invention include: cold rolling, tension, and shape control. Searching the above keywords, it can be found that in the field of cold rolling, there is no similar patent at home and abroad, which shows the innovation of this patent. [0003] In recent years, with the expansion of cold-rolled sheet and strip products to extremely thin gauges and higher strength levels, improving the quality of the plate shape and controlling the shape of the product has become an increasingly difficult ...

Claims

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Application Information

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IPC IPC(8): B21B37/28B21B37/48B21B38/02
CPCB21B37/28B21B37/48B21B38/02
Inventor 吴首民顾廷权韦晓朱亚军叶倩
Owner BAOSHAN IRON & STEEL CO LTD
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