Method for controlling swinging of medium and thick plate rolling steel plate roller way
A technology for rolling steel plate and roller table, which is applied in the field of swing control of steel plate roller table for medium and heavy plate rolling, and can solve the problems of long waiting time and affecting the quality of steel plate.
Inactive Publication Date: 2012-07-25
LAIWU IRON & STEEL GRP
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Problems solved by technology
Due to the relatively long waiting time, the steel plate always swings in a fixed area. Every time it stops moving and changes direction, the contact with the roller table is the same position. If the number of swings increases, the bottom surface of the steel plate will form a line. Black roll marks, which affect the quality of the steel plate
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] The equipment composition of the control system is still the same as the traditional control method, and the steel plate swings near the HMD during the heating process. The initial judgment condition for forward swing is: the rough rolled intermediate steel plate is transported from the RX roller table to the FE1 roller table, and when the tail of the steel plate reaches the starting point of FE1, which is the starting point S of the swing, a swing proce...
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An embodiment of the invention discloses a method for controlling swinging of a medium and thick plate rolling steel plate roller way. The method includes that the roller way swings according to a plurality of preset swinging circulations, the forward times in the preset swinging circulations are different, and the rearward times in the preset swinging circulations are also different. From the scheme, the forward swinging times in the preset circulations in the method are different, and the rearward swinging times are also different. After the method for controlling black mark prevention and distance-variable swinging of steel plates is adopted, the steel plates only stop at the same position after circulating multiple times, namely, the steel plates fundamentally stop at different positions in a swinging process, and accordingly black marks at bottoms of the steel plates are avoided effectively.
Description
technical field [0001] The invention relates to the technical field of steelmaking, and more specifically, relates to a method for controlling the oscillation of a rolling table of a medium-thick plate rolling steel plate. Background technique [0002] In order to obtain better slab quality in the rolling process of medium and heavy plates, a temperature-controlled rolling strategy is usually adopted. During temperature-controlled rolling, it is necessary to wait for the temperature to drop to the required temperature before starting rolling. In order to prevent the high-temperature slab from damaging the roller table and the local temperature drop at the contact position between the slab and the roller table during the temperature-waiting process, the slab reciprocating swing is usually adopted. Control Method. For the rolling line of two rolling mills, after the rough rolling, the forming rolling should be carried out in the finishing mill, wherein, the control of the thi...
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Inventor 吴晓峰桑森吴召明王芳杜伟胡猛张元华侯炜丁梦怡刘爱强赵亮王朋刘轩
Owner LAIWU IRON & STEEL GRP