On-line width adjustment system for mold of slab continuous casting machine

Abstract

On-line mold width adjustment system of slab continuous casting machine, including mold width adjustment controller, mold frame, four push rods driving two narrow copper plates, locking devices installed on each push rod, The frame of the crystallizer is equipped with displacement sensors, and the measuring rod ends of each displacement sensor are fixedly connected with the upper box and the lower box of the two narrow-side water tanks on the crystallizer respectively. It is connected with the signal of the width adjustment controller of the crystallizer. The width adjustment controller calculates the taper and width of the narrow side water tank through the signal detected by the displacement sensor, controls the deceleration motor to drive the push rod to run, and controls the crystallization under the condition of maintaining the taper of the narrow side copper plate. On-line width adjustment by the device, using the locking device to fix the position of the narrow-side copper plate, to realize the continuous adjustment of the width of the cast slab during the casting process of the slab continuous caster, improve the production efficiency of the continuous caster, reduce energy consumption, and make the production line Continuous production operations are smoother.

Description

technical field [0001] The invention relates to an online width adjustment system for a slab continuous casting machine crystallizer, which is an auxiliary matching device for the slab continuous casting machine crystallizer in the production of cast steel slabs. Background technique [0002] The crystallizer of the slab continuous casting machine is wide at the top and narrow at the bottom. It is a trapezoidal funnel composed of two wide-side copper plates and two narrow-side copper plates. The distance between the two wide-side copper plates is generally fixed, while the narrow-side copper plates The distance between them is variable, and there is a taper between the two narrow-side copper plates. A cooling water tank is installed on the back of the copper plate. Four push rods are connected, and the two narrow-side water tanks are equipped with a mechanically driven crystallizer width adjustment device. The mechanical width adjustment device is driven by a motor to rotate...

AI Technical Summary

Problems solved by technology

The existing mechanical width adjustment device is affected by the manufacturing accuracy of the transmission parts, the material of the transmission parts and the mechanical wear. The taper of the copper plate will change (called "running cone" in the industry), and there will be a gap between the shell of the cast slab and the narrow copper plate of the crystallizer, and such a cast slab will have pores and cracks during rolling, " "Running cone" is serious and may cause steel leakage, causing the continuous casting machine to stop pouring and stop production

[0004] Due to the problem of "running cone" in the crystallizer, at the current technical stage, the only way to change the width of the continuous casting billet section is to replace the crystallizer, which wastes energy and affects the production efficiency of the continuous casting machine

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