Sweeping and descaling device for rough rolling of band steel with wind and water

Abstract

The invention discloses a strip steel rough-rolling water-air purging de-scaling device, an air purging de-scaling device is mounted on a strip steel rough-rolling balance beam at one side of a rolling mill from which a steel billet enters into, a spout of the air purging de-scaling device is arranged in parallel to a roller of the rolling mill and is provided with a plurality of nozzles that aredistributed uniformly in an axial direction of the roller, the nozzles spray the steel billet in a lower back direction, water purging devices are mounted on roller channel skeleton guard plates at two sides of a rough-rolling free roller device, the nozzle of the water purging device on the left roller channel skeleton guard plate sprays the steel billet in a right back direction while the nozzle of the water purging device on the right roller channel skeleton guard plate sprays the steel billet in a left back direction. The invention is a strip steel rough-rolling water-air purging de-scaling device which uses no high-pressure water, and is low in cost and good in de-scaling effect.

Description

technical field [0001] The invention relates to a device for removing oxide scale in a steel rolling process, in particular to a wind-water purging and descaling device for rough rolling of strip steel. Background technique [0002] in the strip rolling process. When the steel billet is initially descaled, the surface is rapidly oxidized to form a thin iron oxide scale. After being rolled by the rough vertical roller, part of the iron oxide scale is separated from the billet and floated on the surface of the billet, and then pressed into the strip after being rolled by the rough rolling roll. The surface of the finished steel product causes: 1. The surface of the strip steel has redness, peeling, peeling of the iron oxide scale, etc., which seriously affects the product quality and product image of the strip steel; 2. The iron oxide scale on the surface of the rolled piece produces a large friction This shortens the service life of the roll, affects the service life of the ...

AI Technical Summary

Problems solved by technology

After the steel billet comes out of the furnace and undergoes initial descaling, the surface is rapidly oxidized to form a thin oxide scale. After rough rolling with vertical rolls, part of the oxide scale separates from the billet and floats on the surface of the billet. After rough rolling with flat rolls, it is pressed into the strip. The surface of the finished steel product causes: 1. The surface of the strip steel has redness, peeling, and peeling of the iron oxide scale, which seriously affects the product quality and product image of the strip steel; 2. Due to the large friction caused by the iron oxide scale on the surface of the rolled piece The force shortens the service life of the roll, affects the service life of the roll, and increases the rolling cost

At present, general descaling devices use high-pressure water to descale, and the cost is relatively high

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