Compact type six-roller rolling mill and work method

Abstract

The invention relates to a compact type six-roller rolling mill and a work method. The compact type six-roller rolling mill comprises a work roller and intermediate roller bending cylinder block, spraying beam and oil stopping guide plate parts, an upper bearing roller assembly, an upper intermediate roller assembly, an upper work roller assembly, a lower work roller assembly, a lower intermediateroller assembly, a lower bearing roller assembly and a rack. According to the compact type six-roller rolling mill and the work method, plate shape condition means such as intermediate roller positive and negative roller bending, work roller smooth transition positive and negative roller bending and intermediate roller channeling are achieved; the inner structure of the rack is compact, the spraying beam and oil stopping guide plate parts are arranged in the small space strip inlet and outlet direction, the outlet strip surface residual oil is reduced, and residual oil sprayed to the outlet strip surface from the empty space between the intermediate roller diameter part and a work roller during intermediate roller channeling can be greatly reduced.

Description

technical field [0001] The invention relates to a six-high rolling mill in the field of cold rolling, in particular to a compact six-high rolling mill and a working method. Background technique [0002] In the production process of special steel strips, due to the variety of product materials, such as high-nickel, low-nickel alloys, soft magnetic alloys, spring steel, etc., there are both high-hardness materials and soft materials; due to the range of product thickness variation wide, the thickest incoming material is 5mm, and the thinnest product can be produced at 0.2mm. The production process arrangement is flexible, and the requirements for product precision and intrinsic performance of materials are relatively high. Due to the need to produce thin gauge hard stock, small diameter work rolls must be used. The difficulty of this type of rolling mill is that the small-diameter work rolls bring about small bearing housings and small rack space, and at the same time, funct...

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Problems solved by technology

These two parts should be arranged at the entrance and exit of the stand at the same time, and the upper intermediate roll and upper work roll of the conventional six-high rolling mill have their own roll changing tracks, and these devices cannot all be arranged in the narrow space of the small-diameter six-high rolling mill inside, and the bearing seat cannot interfere with the spray beam and the oil deflecting guide plate when changing the roll

Therefore, the conventional small-diameter six-high rolling mill usually sprays inside the rolling mill and removes oil outside the rolling mill. However, the adhesion of oil and the surface tension of the oil film are very strong, and once the oil drops on the strip, it is difficult to remove

[0005] Third, the intermediate rolls of traditional six-high mills need roll shifting, so that the effective overlapping width of the upper and lower intermediate rolls can be adjusted with the strip width to eliminate harmful contact areas. Therefore, the roll surface width of the intermediate rolls is basically the same as that of the work rolls and backup rolls. One problem brought about is that when the intermediate roll shifts, the roll neck of the intermediate roll and the roll surface of the work roll form a gap, causing the rolling oil to be sprayed directly from the strip inlet of the rolling mill to the strip exit of the rolling mill, resulting in the left a large amount of residual oil

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