Co-stand-column integral small-roller-space dynamic pressing-down tension leveler

Abstract

The invention discloses a co-stand-column integral small-roller-space dynamic pressing-down tension leveler. The tension leveler is a co-stand-column tension leveler with the smallest roller space of 550 mm. The tension leveler is suitable for a continuous casting machine with the basic arc radius R equal to 6 m to 12 m and the number of roller pairs is 2 to 10. The center of each pair of upper roller and lower roller is arranged on a normal of a straightening curve, every two adjacent rollers share one set of supporting stand columns, the upper rollers vertically move respectively along sliding ways on the two sides of each stand column, and hydraulic cylinders internally provided with displacement sensors can precisely control the rolling reduction of the upper rollers and dynamically adjust the roller gaps. Hydraulic cylinder supports of every two adjacent hydraulic cylinders share one set of supporting stand columns, and finally two pairs of upper rollers and lower rollers can be throwing rollers, slight pressing-down rollers and degerming rollers. The tension leveler is compact in structure and small in roller space, more pressing-down rollers can be arranged in the short liquid phase area, the multi-point pressing-down requirement of the process can be met, in the process that the tension leveler transits to the horizontal segment from the arc-shaped segment in a straightening mode, the dynamic pressing-down function of the tension leveler can be achieved, and dummy bar conveying, dummy ingot falling and throwing straightening tasks can be completed.

Description

technical field [0001] The invention relates to a co-column integrated small roller spacing dynamic compression pull-down leveler, in particular to a billet continuous casting machine with a multi-point dynamic compression pull-down leveler, which belongs to the technical field of metallurgical machinery in the metallurgical industry. Background technique [0002] In the slab continuous casting process, there are generally defects such as center segregation and center porosity inside the slab. Affected by the composition and solidification characteristics of the slab, the center segregation and center porosity defects of the high carbon equivalent steel slab are more serious, and the dynamic The reduction technology controls the internal density and homogeneity of the slab by compensating the solidification shrinkage in the center of the slab through online reduction, so as to improve the internal quality of the slab and improve the production efficiency of continuous casting...

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) For different sections of cast slabs, the center line of the upper and lower rolls cannot be perpendicular to the straightening curve, which cannot be applied to the working condition of light reduction; Only one upper roller can be arranged in the straight zone, and another upper roller can be arranged on the horizontal section, which cannot meet the requirements of multi-point timely pressing;

However, the shortcomings of this type of machine are: the independent frame takes up a lot of space, and the roller spacing between the upper rollers is relatively large, which also cannot meet the requirements for the small roller spacing of the billet stretching and leveling machine with dynamic pressing.

[0006] The device described in the utility model patent "A Billet Continuous Casting Light Compression Pulling Machine" (Application No.: CN201320290601.1) includes 6 billet drawing units, one stripping unit and two free rollers. The first point is that there is no billet stripping device in the billet drawing unit; the device described in the utility model patent "A Continuous Casting Billet Pulling and Straightening Machine Device with Light Reduction Function" (application number: CN02289305.9) is a small-diameter close-packed roller fixed On the same frame, its shortcoming is that each upper roller cannot be individually controlled, and the center of the upper and lower rollers cannot always be on the normal line of the straightening curve; the new patent "has equal frame multi-point continuous progressive straightening technology The Tension Straightening Unit" (application number: CN200920030967.9) is that each group of straightening rollers is fixed in a frame, and there are two columns between each two groups of straightening rollers. The disadvantage is that the columns take up a lot of space. Unable to meet the requirements of the small roller spacing of the billet stretching and leveling machine with dynamic reduction; the invention patent "Five-roller Double Frame Progressive Straightening and Straightening Machine" (application number: CN01112954.9) also cannot meet the requirement of dynamic reduction Requirements for the spacing between the small rollers of the billet tension leveling machine

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