Mechanical descaling method

Abstract

The invention discloses a mechanical descaling method, which is characterized in that in a mud pool filled with grinding mud, a plurality of brush rolls are arranged in an up-and-down staggered mode, the brush rolls are completely soaked in the grinding mud, and the surface of each brush roll is provided with bristles; a metal strip passes through the brush rolls which are arranged in an up-and-down staggered mode, by using the tensioning actions of front and rear tension roll sets, a certain tensioning action is generated between the metal strip and each brush roll, namely, a certain contact pressure is generated; the metal strip moves under the pulling actions of the front and rear tension roll sets, and the brush rolls rotate in the opposite direction so that relative motion is generated between the surface of each brush roll and the surface of the metal strip, the bristles carry a lot of grinding mud, and during relative sliding between the bristles and the surface of the metal strip, mud slides relative to the surface of the metal strip for realizing grinding effect, thereby achieving an effect of surface brushing. In the invention, through fully using the rotary brushing action of the brush rolls and the grinding action of the grinding mud, the grinding mud is driven by the bristles closely arranged on the brush rolls so as to remove and grind matters attached to the surface of the metal strip.

Description

Technical field [0001] The invention relates to the technical field of metal surface cleaning, in particular to a mechanical descaling method, which effectively improves the surface quality and post-treatment efficiency of metal products. Background technique [0002] In the process of hot rolling or heat treatment of metal materials such as steel and alloys, a dense covering composed of metal oxides will be formed on the surface, commonly known as "scale". The presence of this scale will affect further processing. : On the one hand, the surface cracks of the material are not easy to be found in advance, so that the finished product has quality problems; on the other hand, it is easy to press the scales into the metal surface, causing surface quality problems; in addition, the existence of hard oxides will cause Accelerate the wear of rolls or drawing machines. Therefore, the process of removing scales on the surface of the metal strip before entering the cold rolling mill is ca...

AI Technical Summary

Problems solved by technology

For example, the foreign 3M company has designed a brush roller with bristles, each of which has a plurality of hard particles adhered to the surface, such as SiC particles, brown corundum, etc. However, the hard particles adhered to the surface of the bristles are easy to fall off, which directly affects the stability of the use effect of the brush roller; at the same time, China Anhui Qianshan Brush Roll Factory processes a variety of hard particles for brushing the surface scales of metal strips. Brush rollers, whose bristles are usually made of wear-resistant rigid materials, etc., because this type of brush rollers are directly brushed with steel wires, the roughness of the board surface after brushing is large, and the uniformity of removal is difficult to guarantee

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