Regulation method and device for double-roll thin-strip continuous casting machine fixing roll

Abstract

The invention discloses a regulation method and device for a double-roll thin-strip continuous casting machine fixing roll. The regulation method comprises the following steps of: a) a hydraulic cylinder is arranged corresponding to a casting roll continuous casting machine rack on a fixed side, the head part of the hydraulic cylinder is connected with a casting roll bearing pedestal, tensioning mechanisms are respectively arranged above and below the hydraulic cylinder, each tensioning mechanism comprises a draw bar, a spring, a gland and regulation nuts, a stop dog is arranged below the other side of the bearing pedestal, a pressure sensor is arranged between the stop dog and the bearing pedestal, and a cast rolling force sensor is arranged on the front end of the hydraulic cylinder; b) before the casting operation, the hydraulic cylinder on the fixed side pushes the casting roll bearing pedestal to press the stop dog; c) the pressure of the draw bars and the springs is regulated by the regulation nuts, the bearing pedestal, the cast rolling force sensor and the hydraulic cylinder are pressed together until the numerical value of the pressure sensor between the stop dog and the bearing pedestal is zero, and the pressure numerical value detected by the cast rolling force sensor is more than the sum of pressuring pressure FN and the maximum friction force f of the bearing pedestal on a guide rail; and after a casting center line is calibrated, the casting state is waited to start. According to the regulation method and device for the double-roll thin-strip continuous casting machine fixing roll, which are disclosed by the invention, the casting center line positioning precision is guaranteed, the cast rolling force detection degree is improved, and stable casting is realized.

Description

technical field [0001] The invention relates to thin strip continuous casting equipment, in particular to a method and device for adjusting fixed rolls of a twin-roll thin strip continuous casting machine. Background technique [0002] The typical process flow of twin-roll thin strip continuous casting is as follows: figure 1 As shown, the molten steel in the ladle 1 is poured directly through the nozzle 2, the tundish 3 and the flow distributor 4 in a room surrounded by two relatively rotating casting rolls 5a, 5b capable of rapid cooling and side sealing devices 6a, 6b. In the melting pool 7, 8 is a secondary cooling device. The molten steel solidifies on the circumferential surface of the casting rolls, and then forms a solidified shell and gradually grows, and then forms a 1-5mm thick metal thin film at the smallest gap (nip point) between the two casting rolls. The strip 11, the strip 11 enters the airtight chamber 10, is guided by the guide plate 9, is sent to the rol...

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