Automatic adjustment method and system of speed synchronism of casting machine and rolling machine

Abstract

An automatic adjustment method of speed synchronism of a casting machine and a rolling machine is characterized in that a weight sensor is installed on an upper approach bridge support between the casting machine and the rolling machine, the sensor is electrically communicated with programmable logic controller (PLC) automatic control system, the PLC automatic control system comprises a proportion integration differentiation (PID) closed-loop controller for adjusting speed of the rolling machine, the PID closed-loop controller produce a coefficient fro automatically correct the speed of the rolling machine, and a standard mid value when normal speed of the casting machine and the rolling machine synchronizes is set in the PLC automatic control system. The automatic adjustment method enables metal second flowing speed during continuous casting and rolling to be unchanged, automatically enables metal second flowing speed of the casting machine speed and the rolling machine speed to be synchronous, greatly improves product quality and achieves automatic control and adjustment of production speed.

Description

technical field [0001] The invention relates to an automatic adjustment method and system for speed synchronization of a casting machine and a rolling mill, belonging to the technology of continuous casting and rolling production lines of non-ferrous smelting. [0002] The term "standard median value" is a standard value, or an intermediate value between a standard value and an actual value, which is generated using theoretical calculation and experience. Background technique [0003] In the continuous casting and rolling production process, the metal second flow rate from the continuous casting machine to the rolling mill should be constant in theory (the law of constant rolling volume), and the billet exit speed of the continuous casting machine is the constant casting and rolling mill A basic parameter of . During the casting process, due to the influence of various factors, the speed of the slab will fluctuate slightly, and the position of the edge-removing knife of the...

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Problems solved by technology

[0005] However, in the prior art, the detection is carried out by the position of the oil cylinder, but the temperature of the slab is high, which is prone to large errors; while the position of the oil cylinder is driven by the position of the pinch roller to press down and arch The detection position is single, which cannot fully reflect the real situation of the casting slab on the upper approach bridge; the position detection of the oil cylinder through the roller adds more hardware equipment, and increases the difficulty of safe operation and maintenance.

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