Lubrication system for hot rolling of vertical roller mill plate blank

Abstract

The invention discloses a lubrication system for hot rolling of a vertical roller mill plate blank. The lubrication system comprises an oil supply part, a water supply part, a mixing control part, a spraying collecting pipe device, a gas source supply part and an oil supplementation device, wherein the mixing control part is connected with the spraying collecting pipe device; a centrifugal water pump of the water supply part pumps water into a mixer of the mixing control part; a metering pump of the oil supply part pumps oil in an oil storage tank to the mixer of the mixing control part; the oil supplementation device is used for supplementing lubricating oil to the oil storage tank; the gas source supply part supplies gas sources for the spraying collecting pipe device. Oil and water are mixed into mechanical mixing liquid according to a certain ratio, the mechanical mixing liquid is uniformly sprayed to a vertical roll surface through a nozzle so as to achieve the effect of lubrication; an oil supply system and a water supply system are respectively supercharged, filtered and metered and are mixed through a control valve stand containing the mixer to obtain oil-water mechanical mixing liquid, and the oil-water mechanical mixing liquid is sprayed to the vertical roll surface for lubrication through a spraying pipeline.

Description

technical field [0001] The invention relates to a lubricating system, in particular to a lubricating system for hot rolling of slab blanks in vertical roller mills. Background technique [0002] The vertical roller mill in the rough rolling area is used to control the width of the slab. During rolling, the contact area is small and the surface of the vertical roller is prone to cracks, which will lead to aggravated wear on the surface of the vertical roller, and even peeling off of the roller surface, which will affect the strip steel. The poor edge quality also makes frequent roll changes, which affects the working time and product surface quality. Under normal rolling conditions, due to the action of high temperature and water vapor, the vertical rolls are prone to form oxide layers with high hardness such as Fe2O3 or FeO on the surface. These oxide layers grow quickly on the one hand, and are quite unstable on the other hand. The continuous formation and peeling of the o...

AI Technical Summary

Problems solved by technology

[0002] The vertical roller mill in the rough rolling area is used to control the width of the slab. During rolling, the contact area is small and the surface of the vertical roller is prone to cracks, which will lead to aggravated wear on the surface of the vertical roller, and even peeling off of the roller surface, which will affect the strip steel. The edge quality also makes frequent roll changes, which affects the working time and product surface quality

Under normal rolling conditions, due to the action of high temperature and water vapor, the vertical rolls are prone to form oxide layers with high hardness such as Fe2O3 or FeO on the surface. These oxide layers grow quickly on the one hand, and are quite unstable on the other hand.

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