Finish rolling threading leveling control method based on deviation detection between racks
A control method and inter-stand technology, applied in the direction of rolling force/roll gap control, etc., can solve the problem of less research on the deviation problem of the finishing rolling unit, and achieve the effect of ensuring real-time and accuracy
Active Publication Date: 2022-07-08
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0003] There are many related automatic control methods at home and abroad, mainly for the asymmetry control of the roughing mill, and less research on the deviation problem of the finishing mill
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[0065] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.
[0066] The invention provides a leveling control method for finishing rolling and stripping based on deviation detection between stands.
[0067] This method uses the feedforward + feedback control model to calculate the dynamic adjustment value of the roll gap of each stand of finishing rolling, and realizes the rapid correction of the deviation of the strip head. This method uses different controls for F1 stands and F2 to F7 stands Strategy, the F1 frame obtains the data from the intermediate billet measuring instrument and combines the vertical roller parameters to control the F1 frame through the roll gap leveling after the vertical roller bites the steel; Collected by the high-frequency camera installed on the top of the rack, th...
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The invention provides a finish rolling threading leveling control method based on deviation detection between racks, and belongs to the technical field of finish rolling automatic control. According to the method, different control strategies are adopted for a rack F1 and racks F2-F7, the rack F1 obtains data through an intermediate billet measuring instrument, and the data are combined with parameters of a vertical roll to conduct threading roll gap leveling control on the rack F1 after the vertical roll bites steel; f2-F7 inlet deviation and F2-F6 outlet deviation are directly collected through a high-frequency camera installed above the rack, F7 rack outlet deviation is obtained through an outlet multifunctional instrument, according to inlet deviation information collected by the rack, a strip penetrating roll gap leveling value of the rack is calculated, and after strip steel penetrates through the rack, the leveling value of the strip penetrating roll gap of the rack is calculated according to the camera above the next rack. And the outlet deviation value of the rack is acquired, and secondary adjustment is quickly performed on the rack, so that feedforward and feedback adjustment of each finish rolling rack is realized. The method is suitable for strip steel deviation control of a hot rolling and finishing mill group provided with a detection device between racks.
Description
technical field [0001] The invention relates to the technical field of automatic control of finishing rolling, in particular to a leveling control method for finishing rolling through strips based on deviation detection between stands. Background technique [0002] The strip running speed in the finishing mill is fast. When rolling thin-gauge products, the most important factor that directly or indirectly affects the rolling stability is the strip deviation. The deviation of the strip will cause fluctuations in the wedge index of the strip. During the thin-gauge rolling process, it is easy to produce waves between the stands, which will affect the quality of the strip. The surface of the steel is scratched, resulting in defects such as edge damage, resulting in a reduction in the yield and product degradation, and at the same time, it will cause damage to equipment such as rolls and guides. At present, there is no effective monitoring method for the deviation of the strip in...
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IPC IPC(8): B21B37/58
CPCB21B37/58Y02P70/10
Inventor 何海楠周杰徐冬彭功状王晓晨杨荃闫书宗丁吉杰
Owner UNIV OF SCI & TECH BEIJING