A down-drive Y-type four-high strip mill

Abstract

A lower-drive type Y-shaped four-roller plate and strip rolling mill comprises a machine frame, a pressing-down assembly, a roller system assembly, a back-up roller balance assembly, an upper work roller balance assembly and a different-speed-ratio control assembly. The roller system assembly is arranged in a Y-shaped manner. The diameter of an upper work roller is smaller than that of a lower work roller, so that different-diameter rolling is formed. Each back-up roller bearing seat is in an integrated type. Upper work roller bearing seats, springs, pull rods, nuts and guide rods form the upper work roller balance assembly. The different-speed-ratio control assembly is composed of sleeves, arc-surfaced friction sheets and hydraulic cylinders. The ratio between the linear speed of the upper work roller and the linear speed of the lower work roller is not 1, so that different-speed rolling is formed. The lower-drive type Y-shaped four-roller plate and strip rolling mill can effectively lower the rolling force, reduce roller elastic flattening and flexural deflection, improve the plate and strip rolling quality and widen the plate and strip rolling range; and meanwhile, the lower-drive type Y-shaped four-roller plate and strip rolling mill can reduce the flexural deflection in the rolling process, greatly widens the range of the plates and strips which can be rolled and has the potential to roll extremely-thin plates and strips. The lower-drive type Y-shaped four-roller plate and strip rolling mill is simple in structure, convenient to adjust and maintain and low in manufacturing cost.

Description

technical field [0001] The invention relates to a processing equipment for cold-rolled strips. Background technique [0002] Improving the quality of strip production, reducing the cost of strip production, and improving the production efficiency of strip are the eternal pursuits in the production process of cold-rolled strip. In order to obtain a high-quality, low-cost, and high-efficiency cold-rolled strip production process, scholars and experts at home and abroad have designed and manufactured various forms of rolling mills to find a more excellent cold-rolled strip production process. Among them, four-high rolling mill, six-high HC (High Crown, high-performance roll crown) rolling mill, HCW (work roll moving HC) rolling mill, twelve-high rolling mill and twenty-high rolling mill have been used in the cold rolling strip process. In order to enable the rolling mill to obtain the function of adjusting the shape of the strip, various roll shape adjustment methods such as h...

AI Technical Summary

Problems solved by technology

This patent introduces the application of electromagnetic flatness control technology in rolling mill equipment, but does not give a specific scheme for realizing electromagnetic flatness control, nor does it propose the structural form and implementation method of Y-shaped rolling mill, and does not have different speeds Regulatory components

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