A profile hot rolling finishing mill rolling piece position tracking device and tracking method

Abstract

The invention discloses a rolled piece position tracking device for a sectional material hot rolling finishing mill. The rolled piece position tracking device comprises a machine frame, a tracking region, a zero current sampling section, a tension adjustment section, a hot metal detector, a frequency converter, a man-machine interface local area network, a high-performance controller, a man-machine interface server and a local control panel, wherein the zero current sampling section and the tension adjustment section are arranged in the tracking region, and a rolled piece position tracking control module is arranged in the high-performance controller. A rolled piece position tracking method for a sectional material hot rolling finishing mill comprises the following steps that 1, the rolled piece position tracking control module is started; 2, the position of a rolled piece in the tracking region is calculated and is compared with the position values of the tension adjustment section and the zero current sampling section; 3, the rolled piece position tracking control module finishes the tracking procedure of the current tracking region according to cascade signals and steel occluding current change signals. The rolled piece position tracking device and the rolled piece position tracking method have the characteristics that the rolled piece tracking precision is high, the manual intervention is little, the yield of hot rolling sectional materials is high, the failure rate is low, and the labor cost is low. The rolled piece position tracking device and the rolled piece position tracking method can be widely applied to the technical field of sectional material hot rolling automation control.

Description

technical field [0001] The invention relates to the technical field of automatic control of profile hot rolling, in particular to a position tracking device and tracking method for a rolling piece of a profile hot rolling finishing mill. Background technique [0002] Hot rolling is a necessary process in the profile production chain of modern steel mills. In the hot rolling production process, the rolling in the finishing rolling area has an important impact on the formation of finished profiles. In the modern continuous rolling method, in order to maximize To fully ensure the dimensional accuracy of the finished rolled piece, it is necessary to make the tension generated between the continuous rolling stands reach the required value set by the process, which is usually zero or a small value. At present, the following four methods are mainly used at home and abroad to realize the tension control between the racks: (1) the mechanical collar method; (2) the direct detection me...

AI Technical Summary

Problems solved by technology

Therefore, the detection of the hot metal detector 4 is susceptible to interference, which can easily cause misjudgment of the tracking signal, make the tracking signal wrong, and cause the data calculation of the entire rolled piece 15 to be invalid, thereby failing to ensure the tracking accuracy of the rolled piece 15, and affecting to the normal operation of the tension adjustment system

At this time, the tension adjustment can only be terminated, and the operator can manually adjust it to ensure the rolling progress, which will inevitably affect the finished profile size and yield

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