Memorial archway type tension leveler and small billet continuous casting machine applying same for reduction

Abstract

The invention discloses a memorial archway type tension leveler. The memorial archway type tension leveler comprises a memorial archway type frame, at least two sets of tension-straightening rollers and lifting driving mechanisms, wherein the memorial archway type frame comprises a base, an upper framework and a plurality of rows of stand column frames, each set of tension-straightening rollers are located between two adjacent rows of stand column frames, and comprise one upper tension-straightening roller and one lower tension-straightening roller, the lifting driving mechanisms are installedon the upper framework, the number of the lifting driving mechanisms is the same as the number of the sets of the tension-straightening rollers, displacement sensors are installed on the upper portions of the lifting driving mechanism, the lower portions of the lifting driving mechanisms are connected with upper tension-straightening roller lifting frames, the upper tension-straightening rollersare rotationally arranged in the upper tension-straightening roller lifting frames, the lower tension-straightening rollers are rotationally installed on the stand column frames, sliding rails are arranged on one sides, facing the tension-straightening rollers, of the stand column frames, and the lifting driving mechanisms drive the upper tension-straightening roller lifting frames to slide up anddown in the sliding rails. The memorial archway type structure is simple and compact, is good in framework rigidity and has a stable guiding function, the reduction amount is controlled accurately, and the quality of a casting blank is guaranteed. The invention further discloses a small square billet continuous casting machine applying the memorial archway type tension leveler for reduction.

Description

technical field [0001] The invention relates to the technical field of continuous casting, in particular to an archway-type drawing and straightening machine and a billet continuous casting machine for pressing by using the same. Background technique [0002] For billet continuous casting machines that produce billets with a cross-sectional size of less than 200mm×200mm, when producing high-quality alloy steel and other steels that have strict requirements on internal quality and compression ratio, it is necessary to strictly control the internal quality of the continuous casting billet, especially It is an index to control the porosity and segregation of the slab center. The dynamic reduction technology is to apply a certain amount of reduction near the solidification end to compensate for the solidification shrinkage of the slab and prevent the enrichment of segregation elements at the solidification end, thereby reducing the central porosity and segregation. The prerequi...

AI Technical Summary

Problems solved by technology

However, for a specific steel type, casting speed, superheat and other conditions, and because the billet section is small, the length of the liquid phase zone that can be used for dynamic reduction is short, so it is necessary to arrange more reduction rollers within a limited range.

In the prior art, the distance between the tensioning and straightening rollers is large, which cannot meet the parameter requirements of billet casting blank reduction

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