An ultra-thin strip rolling mill and its rolling method using back-up roll transmission

Abstract

An ultrathin strip rolling mill adopting support roller transmission and a rolling method of the ultrathin strip rolling mill belong to the technical field of plate and strip rolling. A main transmission motor of the ultrathin strip rolling mill directly drives a support roller by a coupler; the support rollers are driven by first opening gear banks; work rollers and the support rollers are driven by a second opening gear bank and a third opening gear bank; tension motors are positioned at front and rear sides of the rolling mill; a rolled piece penetrates through roller seams and is connected with a reel; the rolling method comprises the steps of preparing two types of first opening gear banks, wherein multiple sets of first type of gear banks are arranged, all sets of the first type of gear banks are different in gear ratio and are used for asynchronous rolling, and the second type of gear banks are same in tooth number and are used for synchronous rolling; selecting one type of gear banks for mounting according to process needs, and applying a rolling force by a pressing device, applying a tension by the tension motors, and starting the main transmission motor, thus finishing the first rolling process rolling. The proper first opening gear banks can be replaced and mounted by multiple times according to the process needs, and the next rolling process rolling is performed till the rolled piece achieves a target thickness.

Description

Technical field [0001] The invention belongs to the technical field of plate and strip rolling, and particularly relates to an ultra-thin strip rolling mill adopting support roller transmission and a rolling method thereof. Background technique [0002] Ultra-thin strips of metals, alloys and metal-based composite materials are widely used in microelectronics, micro-manufacturing, instrumentation and other industries, and the demand is increasing. At this stage, the ultra-thin strips of metals, alloys and metal matrix composites are mostly obtained by rolling, and the rolling mills used are mostly multi-roll mills. The transmission system of traditional multi-roll mills has complex structure, high production, operation and maintenance costs, and most of them are synchronous rolling mills. Due to the influence of the minimum rollable thickness of synchronous rolling, the rolling capacity of the rolling mill is limited; in addition, traditional multi-roll mills work Roll diameters...

AI Technical Summary

Problems solved by technology

The transmission system structure of traditional multi-roll mills is complex, the production, operation and maintenance costs are high, and most of them are synchronous rolling mills. Due to the influence of the minimum rollable thickness of synchronous rolling, the thinning capacity of the rolling mills is limited; in addition, the traditional multi-roll mills work The diameter of the roll is generally small, and torsional vibration is prone to occur during rolling, thereby affecting product quality. It is difficult to roll extremely thin metal strips that are difficult to deform, and the rolling efficiency is low

[0003] When an asynchronous rolling mill driven by work rolls is used to produce extremely thin strips, the diameter of the work rolls will be limited due to the strength of the pinion in the transmission gear set and the strength of the head of the slow roll, so the roll diameter cannot be too small, so that It affects the thinning ability of the rolling mill; due to the small rigidity of the transmission system, it is also prone to torsional vibration, which affects product quality; in addition, the limited diameter of the working rolls of the rolling mill will lead to a small center distance between the gear sets between the working rolls and The gear modulus is small, which leads to strict requirements on the thickness of the rolled piece during rolling; at the same time, due to the small center distance of the gear set between the work rolls, the diameter of the pitch circle of the gear is limited, and the number of teeth is small, resulting in The variable speed ratio change step is larger, and the types of different speed ratios that can be obtained are less

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