A high-speed short-side width adjustment method for continuous casting of slab continuous casting machine mold

Abstract

The invention relates to a non-stopped pouring high-speed short-edge width regulating method of a slab continuous casting machine crystallizer, belonging to the field of metal casting. The method comprises the following steps of: driving a short edge copper plate at one side of a crystallizer to move, wherein a poured steel type, molten steel overheating degree and casting speed are guaranteed tobe constant; acquiring an initial conical degree value, an initial pouring half width value, a target conical degree value and a target pouring half width value of the short edge copper plate of the crystallizer; and realizing thermal width adjustment on a casting in a moving state by adopting the swinging track of the discrete variable rotating radius short edge copper plate and utilizing a dynamic change rule of amount of contraction of a cross section during the period that the cross section is changed at a certain casting speed. By applying the method provided by the invention, high-speedshort edge width adjustment can be carried out under the condition that the slab continuous casting machine does not stop pouring, specification switching is carried out under the condition that the capacity of the casting machine is not influenced, the production capabilities changeable in specification and flexibly switchable of the casting machine can be fully played; and the probability that defects such as breakout owning to switching, overhigh cutting amount of transition billet and the like are caused is reduced while the slab specification switching efficiency is improved.

Description

technical field [0001] The invention belongs to the field of metal casting, and in particular relates to a method for adjusting or controlling the width of casting slabs poured into a crystallizer of a slab continuous casting machine. Background technique [0002] When the traditional slab continuous casting machine is in actual casting production, in order to produce slabs of different widths, the final casting must be forced, and the static width of the crystallizer must be adjusted to achieve the purpose of casting slabs of different widths. [0003] The crystallizer is a continuous casting equipment that accepts the molten steel injected from the tundish and solidifies it into a solid slab shell according to the specified cross-sectional shape. It is the most critical part of the continuous casting machine. Casting machine capacity plays a decisive role. [0004] Regarding the specific structure and composition of the crystallizer, you can refer to the Chinese utility m...

AI Technical Summary

Problems solved by technology

[0017] The technical problem to be solved by the present invention is to provide a method for high-speed short-side width adjustment of the slab continuous casting machine crystallizer without stopping casting, which enables the slab continuous casting machine to perform high-speed short-side width adjustment without stopping casting , realize the specification switching of the casting machine without affecting the production capacity, which is helpful to give full play to the production capacity of the casting machine with variable specifications and flexible switching, while improving the efficiency of slab specification switching, and reducing breakouts and transitions due to switching Probability of occurrence of defects such as excessive blank cutting

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