Apparatus and method of changing rolling target thickness of rolling machine during rolling
A technology of target thickness and rolling process, applied in the direction of rolling mill control device, metal rolling, metal rolling, etc., can solve problems such as large thickness error, poor thickness quality, difficult operation, etc.
Inactive Publication Date: 2017-06-13
POHANG IRON & STEEL CO LTD
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[0003] When changing the target thickness, if the thickness control is not correct, it will not only cause the instability of the whole board and make the operation difficult, but also cause a large thickness error after the change, so there will be a section with poor thickness quality
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[0021] Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings in order for those skilled in the art to which the present invention has ordinary knowledge to easily carry out the present invention. However, in the process of describing the preferred embodiments of the present invention in detail, if it is judged that the specific description of related common knowledge or structures will obscure the gist of the present invention, the description will be omitted. In addition, the same symbols are used throughout the drawings for parts having similar functions and actions.
[0022] In addition, throughout the specification, when it is stated that a certain part is "connected" to another part, it includes not only "direct connection" but also "indirect connection" with another element interposed therebetween. In addition, "comprising" a certain constituent element does not mean excluding other constituent elements, but means that...
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According to one embodiment of the invention, an apparatus and method of changing rolling target thickness of a rolling machine during rolling are provided. The apparatus comprises a target thickness setting part providing to-be-changed target thickness of each rolling machine during the rolling, a control part according to moving speed of a steel plate between rolling machine, calculating target thickness change amount according to the to-be-changed target thickness when a traced thickness change area enters a target thickness of a relative rolling machine after thickness of a steel plate moving between rolling machines are traced, and calculating roller interval adjusting amount of upper rollers and lower rollers of each rolling machine according to the target thickness change amount of the rolling machine and the access side thickness change amount, and a driving part adjusting an interval of upper rollers and lower rollers of each rolling machine according to the roller interval adjusting amount.
Description
technical field [0001] The invention relates to a device and method for changing the rolling target thickness of a rolling mill during the rolling process. Background technique [0002] Continuous steel rolling refers to the process of continuously producing multiple coils after inserting a slab. It is different from the ordinary operation method of producing a coil after rolling a slab. Since products of various thicknesses need to be continuously produced, it is necessary to A technique for changing the target thickness during rolling. [0003] When changing the target thickness, if the control of the thickness is not correct, it will not only cause the instability of the whole board and make the operation difficult, but also cause a large thickness error after the change, so there will be a section with poor thickness quality. [0004] Prior art literature: [0005] patent documents [0006] Patent Document 1: Japanese Laid-Open Patent No. 2014-104491 (Title of Inventi...
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IPC IPC(8): B21B37/20
CPCB21B37/20B21B2261/04
Inventor 潘星俊李德万
Owner POHANG IRON & STEEL CO LTD