APPARATUS AND METHOD FOR IMPARTING SELECTED TOPOGRAPHIES TO ALUMINIUM SHEET METAL AND APPLICATIONS THERE FOR Russian patent published in 2018 - IPC B21B1/22 

FIELD: metal rolling.

SUBSTANCE: invention relates to the field of rolling an aluminium sheet and manufacturing therefrom a container for crushed material. Method comprises forming, from an aluminium sheet, at least one surface in contact with the crushed material, forming an interior space. Increase in the homogeneity of the sheet surface is ensured by that the aluminium sheet is subjected to forming, the static friction coefficient of which, when in contact with the crushed material, is 0.62-0.79, obtained by rolling a working roll, the surface of which is covered 50-100% with depressions without faces, with a central region recessed relative to the average height of said surface, and a projecting smooth peripheral projection having a higher height at its apex than the average height of said surface.

EFFECT: slippery sheet material can be used to make tanks, bins, pipelines and guide structures to facilitate the storage and movement of the flow of granular material.

20 cl, 21 dwg