A method and device for periodic roll shifting in hot continuous rolling
A technology of hot continuous rolling and roll shifting, which is applied in the direction of profile control, etc., and can solve problems such as poor profile of the transverse section of the strip
Active Publication Date: 2019-09-03
SHOUGANG CORPORATION
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Problems solved by technology
[0003] At present, the commonly used periodic roll shifting method is the multi-position equal-stroke and equal-step strategy. However, using the above-mentioned roll shifting method for rolling schedules with frequent width changes is likely to cause poor cross-sectional profiles of the strip.
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[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0033] Embodiments of the present invention provide a method for periodic roll shifting in hot continuous rolling, such as figure 1 As shown, the method includes:
[0034]Step 101: Obtain a rolling plan sheet containing the width data of several strips to be shifted.
[0035] Step 102: Determine the strip with the widest width in the rolling plan as the target strip.
[0036] Step 103: Set the roll shifting value of the target st...
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The invention relates to the technical field of hot continuous rolling, in particular to a hot continuous rolling cycle roll shifting method and device. The method comprises the following steps that arolling plan list comprising width data of strip steel with a plurality of rollers to be subjected to roll shifting is acquired; the strip steel with the widest width in the rolling plan list is determined as the target strip steel; a roll shifting value of the target strip steel is set as the maximum value of the roll shifting, moreover, a roll shifting value of a first piece of strip steel before the target strip steel is obtained according to a first formula, a roll shifting value of a first piece of strip steel after the target strip steel is obtained according to a second formula, and roll shifting values of other pieces of strip steel in the rolling plan list are correspondingly obtained according to a third formula, wherein the first formula, the second formula and the third formula are correspondingly specified in the specification; and roll shifting is carried out on each piece of strip steel by utilizing the roll shifting values corresponding to the pieces of strip steel inthe rolling plan list. According to the hot continuous rolling cycle roll shifting method and device, rolling abrasion can be effectively homogenized, the abrasion width can be improved, and the transverse section contour of the hot continuous rolling strip steel can be improved.
Description
technical field [0001] The invention relates to the technical field of hot continuous rolling, in particular to a method and device for periodic roll shifting of hot continuous rolling. Background technique [0002] The hot rolling production line is mainly used to produce hot-rolled steel products such as automobile cold-rolled plate, pipeline steel, welded bottle steel, cold-rolled base material and hot-rolled commodity coil. With the continuation of the rolling process, the thermal expansion and wear of the work rolls gradually accumulate, which has a certain impact on the transverse section profile of the strip, especially at the end stand. Hot-rolled products with poor cross-sectional profile will inevitably affect downstream processing and even affect normal production. The effective means to solve the above problems is to periodically shift the rolls of the hot-rolled final stand. [0003] At present, the commonly used periodic roll shifting method is the strategy of...
Claims
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IPC IPC(8): B21B37/40
Inventor 王策刘子英董立杰王凤琴张长利李飞李旭东张喜榜郭薇龚波靳振伟谈霖马闻宇
Owner SHOUGANG CORPORATION