Control method for steel plate swing in front of straightening machine
A control method and straightening machine technology, applied in rolling mill control devices, metal rolling, manufacturing tools, etc., can solve problems such as abnormal cooling signals of steel plates, and achieve the effect of ensuring correctness and avoiding abnormalities
Active Publication Date: 2018-09-04
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0010] Aiming at the problem of abnormal cooling signal of the steel plate caused by the swing of the steel plate in front of the straightening machine in the prior art, the purpose of the present invention is to provide a control method for the swing of the steel plate in front of the straightening machine
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[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] refer to Figure 4 According to the existing control logic, the present invention designs a new steel plate swing position tracking control logic under the condition of satisfying the production process, so as to ensure the correctness of the steel plate position tracking and avoid the occurrence of the above problems. Such as Figure 4 Shown, the present invention can be summarized as following each steps:
[0027] S1, the rolling line PLC tracks the steel plate position at the exit of the rolling mill;
[0028] S2, judging whether the cooling PLC system has received steel plate cooling information from the host computer. If not, proceed to the next non-cooling process production according to the position tracking function of the rolling line PLC; if so, enter S3.
[0029] S3, the cooling PLC function starts;
[0...
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The invention discloses a swing control method for a steel plate in front of a straightening machine. The swing control method comprises the following steps of a step 1, tracking the position, at an outlet of a rolling mill, of the steel plate by a rolling line PLC (Programmable Logic Controller); a step 2, judging whether steel plate cooling information, which is issued by a superior computer, is received by a cooling PLC system or not; a step 3, starting the function of the cooling PLC; a step 4, tracking the position of the steel plate by the rolling line PLC; a step 5, conveying the steel plate to be in front of a pre-straightening machine; a step 6, judging whether an instruction of swinging in front of the pre-straightening machine is issued or not by a rolling mill PLC; a step 7, swinging the steel plate; a step 8, judging whether the swing of the steel plate is finished or not; a step 9, pre-straightening the steel plate; a step 10, cooling the steel plate; and a step 11, straightening the steel plate. By using the swing control method for the steel plate in front of the straightening machine, which is provided by the invention, in the condition that a production technique is met, the position tracking accuracy of the steel plate can be ensured; and the abnormality generation of a steel plate cooling signal is avoided.
Description
technical field [0001] The invention relates to an automatic control method for a wide and thick plate rolling area, and more specifically, relates to a control method for swinging a steel plate in front of a straightening machine. Background technique [0002] In the production line of steel rolling mills, the close coordination and coordination of logistics between the upper and lower processes in actual production is an important link to improve the rhythm of rolling production and increase production capacity. [0003] Such as figure 1 As shown, the entire thick plate production line is divided into a rolling line and a finishing area. The main equipment in the rolling line area includes a walking heating furnace 1, a descaling box 2, a roughing mill 3, a finishing mill 4, and an accelerator with direct quenching function. Cooling device 5, strong pre-straightening machine 6 with roll bending device, hot straightening machine 7, etc. [0004] In order to further increa...
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IPC IPC(8): B21D1/00B21D1/02B21B37/00
CPCB21B37/00B21B37/005B21D1/00B21D1/02
Inventor 王红李建功沈大良
Owner BAOSHAN IRON & STEEL CO LTD