Continuous casting machine sector section for deep pressing of continuous casting blank solidification tail end and deep pressing method of continuous casting machine sector section

Abstract

The invention provides a continuous casting machine sector section for deep pressing of the continuous casting blank solidification tail end and a deep pressing method of the continuous casting machine sector section. The continuous casting machine sector section comprises an upper frame, a lower frame, an upper driving roll, a lower driving roll, a left driven roll set, a right driven roll set, a pressing device and a clamping cylinder, wherein the upper frame, the lower frame, the upper driving roll, the lower driving roll, the left driven roll set, the right driven roll set, the pressing device and the clamping cylinder are arranged on the sector section; the clamping cylinder is used for clamping the upper frame and the lower frame to be kept in a certain set gap; the upper driving roll is connected with the pressing device and connected to the upper frame through a bearing base, the lower driving roll is connected to the lower frame through a bearing base, the left driven roll set and the right driven roll set are located on the two sides of the driving rolls respectively, the left driven roll set is used for clamping a casting blank before pressing, the right driven roll set is used for clamping the casting blank after pressing, and the radio of the diameter of each driving roll to the diameter of each driven roll is 1.1:1 to 2:1. According to the continuous casting machine sector section for deep pressing of the continuous casting solidification tail end and the deep pressing method of the continuous casting machine sector section, the deformation permeability is improved, deformation achieved through the continuous casting machine sector section is equivalent to that achieved by one rolling pass of a twin rolling mill with the large rolling diameter, and the improvement in loosening and segregating of a central zone of the casting blank is facilitated.

Description

technical field [0001] The invention relates to the technical field of slab casting, in particular to a segment of a continuous casting machine for large-reduction at the solidification end of a continuous casting slab and a large-reduction method thereof. Background technique [0002] The large reduction technology at the solidification end of the continuous casting slab is to install a reduction roller at the solidification end of the continuous casting slab on the continuous casting production line. 5~20mm), followed by normal rolling production. This technology can significantly improve the central quality of continuous casting slabs (improving low-magnification structure, shrinkage cavity, porosity, segregation, etc.), and can produce high-quality special slabs with a thickness greater than 100mm at a lower compression ratio (1.5-2.5). Thick plate products. [0003] When the large reduction is carried out at the solidification end of the continuous casting slab, if th...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a segment of continuous casting machine with large reduction at the solidification end of continuous casting slab and its large reduction method, so as to solve the problem of using the original continuous casting machine system to implement solidification in the segment in the prior art. When the end is greatly reduced, the strength and rigidity of the continuous casting machine segment and the driving roller will be seriously insufficient, and the bearing capacity of the clamping cylinder will be insufficient, making it difficult to implement a large reduction at the solidification end, and prone to cracks in the middle of the slab.

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