Offline rapid arc-aligning method for movable segment of arc-shaped billet continuous casting machine

Abstract

The invention discloses an offline rapid arc-aligning method for a movable segment of an arc-shaped billet continuous casting machine. The method comprises the following steps: fixing the inner arc side of the movable segment upwards on an arc-aligning table; measuring the heights from the upper surfaces of outer arc rolls of roll frames at the two ends to a measuring table respectively , and adjusting the heights to specified ranges; measuring the distance between a left side roll or a right side roll of the roll frames at the two ends and a central line respectively, and adjusting the distance to a specified range; placing an arc-aligning sample plate on the outer arc rolls by taking the outer arc rolls of the roll frames at the two ends as supporting points, measuring the amount of clearance between the outer arc roll on each roll frame in the middle and the arc-aligning sample plate by using a feeler gauge, and adjusting the amount of clearance to a specified range; attaching one side face of the arc-aligning sample plate to the side rolls on one side of the roll frames at the two ends in a way of being tangential to two roll surfaces, measuring the amount of clearance between the side roll on each roll frame in the middle and the arc-aligning sample plate by using the feeler gauge, and adjusting the amount of clearance to a specified range; measuring the roll interval between two adjacent inner arc rolls, and adjusting the roll interval to a specified range; measuring the roll interval between two adjacent side rolls, and adjusting the roll interval to a specified range. The offline rapid arc-aligning method has the characteristics of high arc-aligning accuracy and rapidness and convenience in arc alignment.

Description

technical field [0001] The invention belongs to the technical field of metallurgical rolling, and in particular relates to an off-line rapid arc alignment method for a movable section of an arc-shaped billet continuous casting machine with high arc alignment accuracy and fast and convenient arc alignment. Background technique [0002] For continuous casting machines, especially the arc accuracy of the entire quarter arc of the arc-shaped billet continuous casting machine has a great influence on the shape and quality of the billet. If the error is too large, it will affect the Internal cracking occurs due to additional deformation of the billet shell. At the same time, inaccurate arc alignment is also one of the important reasons for steel breakout. Therefore, the arc accuracy must be strictly controlled. Especially in the current continuous casting and rolling, the "one pot to the bottom" process is adopted, which makes it particularly important to grasp the rhythm and tim...

AI Technical Summary

Problems solved by technology

However, the existing off-line detection and adjustment of the arc alignment accuracy of the active section not only relies too much on the complex and huge centering station, but also the operation is complicated and cumbersome, not only the initial investment cost is high, but also the arc alignment speed is slow, and the comprehensive arc alignment accuracy can only reach ≤0.5 mm, it is difficult to meet the requirements of high quality, high reliability and low cost rolling

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