Technological rolling lubricating system of finish rolling mill for hot-rolled strip steel

Abstract

The invention discloses a technological rolling lubricating system of a finish rolling mill for hot-rolled strip steel. The lubricating system comprises a water supply device, an oil supply device and a metering pump station. The oil supply device is connected with oil inlets of the metering pump station by working oil pumps on the oil supply device, the water supply device is connected to a water inlet of an oil and water mixing control unit, the metering pump station is connected to an oil inlet of the oil and water mixing control unit, and the oil and water mixing control unit is connected with a lubricating header. The technological rolling lubricating system has the advantages that the stability of the shape of a roller can be improved, and the service life of the roller can be effectively prolonged; stressed conditions of the surface of the roller can be relieved, accordingly, the roller replacement frequency can be reduced, and the operation time of the roller can be prolonged; rolling force can be reduced, so that electric energy can be saved; the quality of the surface of the strip steel can be improved, so that the pickling ability can be improved after the strip steel is subjected to hot rolling; after rolling oil is applied, a friction coefficient of the inside of a deformation zone is reduced, so that the rolling pressure can be decreased.

Description

technical field [0001] The invention relates to the field of hot-rolled steel strip rolling, in particular to a rolling lubrication system for hot-rolled strip finishing mills. Background technique [0002] In the hot-rolled strip production process, water-cooled rolls are used for hot rolling. Especially in the front section of the finishing mill, due to the low speed and heavy load, the work rolls are prone to cracks, resulting in serious surface wear and even peeling and peeling, resulting in frequent roll changes. This not only affects the working time but also affects the quality of the product surface. Generally speaking, under hot rolling conditions, the work rolls are prone to generate Fe on the surface of the work rolls due to the action of high temperature and water vapor. 2 o 3 Or iron oxide scales with higher hardness such as FeO, these oxide scales grow faster on the one hand, and are quite unstable on the other hand. The continuous generation and peeling of...

AI Technical Summary

Problems solved by technology

The continuous generation and peeling of iron oxide scale causes severe wear of the roll and rough surface of the product. The rough surface of the product leads to a large surface friction coefficient, which increases the force on the surface of the roll and increases the consumption of the roll; the friction coefficient large, resulting in increased rolling force and increased power consumption; the instability of the roll shape makes it difficult to control the shape and size, resulting in a decrease in the surface quality of the product; a large friction coefficient makes the rolling pressure greater

Images