Abstract

Process for rolling aluminum foils includes: providing first and second laminates each having two aluminum foils overlapped one to another between which a lubricant is interposed; lubricating one face of one laminate between the first and second laminate; coupling the first laminate with the second laminate obtaining a double laminate. The lubricated face is a contact face between the first and second laminate; or it is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of winding the double laminate obtaining a wound double laminate having n coils; partially separating the wound double laminate by unwinding, by one coil, both the aluminum foils of one of the first and second laminate, obtaining an at least partially wound double laminate having an end portion constituted by a respective portion of both the aluminum foils of only one of the first and second laminate.

IPC Classes  ?

• B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets
• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
• B21B 47/04 - Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal for separating layers after rolling
• B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences

Abstract

Process for rolling aluminium foils, comprising the steps of: a)-b) providing a first and a second laminate (1, 2) each comprising two aluminium foils overlapped one to another between which a lubricant is interposed; c) lubricating one face of one laminate between the first and second laminate; d) coupling the first laminate with the second laminate obtaining a double laminate, wherein - d' ) the lubricated face is a contact face between the first and second laminate; or wherein d' ' ) the lubricated face is a non-contact face between the first and second laminate, in this case being provided the intermediate steps of - - d' ' ' ) winding the double laminate obtaining a wound double laminate (13) comprising n coils; <±'''') partially separating the wound double laminate (13) by unwinding, by one coil, both the aluminium foils of one of the first and second laminate, obtaining an at least partially wound double laminate (18) comprising an end portion (19) constituted by a respective portion of both the aluminium foils of only one of the first and second laminate; - - d' ' ' ' ' ) unwinding the at least partially wound double laminate (18) obtaining a double laminate; e) rolling the double laminate; f) separating the double laminate obtaining two aluminium foils (4, 5) each have both faces opaque, and two aluminium foils (6, 7) each have an opaque face and a bright face.

IPC Classes  ?

• B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets
• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning

Abstract

The invention relates to an aluminium foils rolling process, comprising the steps of: a) providing a first aluminium foil (1) and a second aluminium foil (2) each having a respective first face (3, 4) and a respective second face (5, 6); b) lubricating one face between the first face (3, 4) and the second face (5, 6) of an aluminium foil between the first aluminium foil (1) and the second aluminium foil (2), thereby obtaining a first lubricated face; c) coupling the first aluminium foil with the second aluminium foil, so that the first lubricated face is a contact face between the first aluminium foil and the second aluminium foil, thereby obtaining a coupled foil (9) having two outer faces; d) rolling the coupled foil (9) with reduction of the thickness of the coupled foil; e) lubricating one face between the two outer faces of the coupled foil, thereby obtaining a coupled foil having a second lubricated face (11); f) winding the coupled foil having a second lubricated face (11), obtaining a wound coupled foil (12) comprising n turns; g) partially separating the wound coupled foil by unwinding one of the first aluminium foil and the second aluminium foil, of one turn, thereby obtaining a wound coupled foil (13) comprising an end portion (14) constituted by a respective portion of only one of the first aluminium foil and the second aluminium foil; h) unwinding the wound coupled foil (13) thereby obtaining a coupled foil wherein the second lubricated face is a contact face between the first aluminium foil and the second aluminium foil; i) rolling the coupled foil wherein the second lubricated face is a contact face between the first aluminium foil and the second aluminium foil thereby obtaining a coupled foil (15) with reduced thickness; 1) separating the couple foil (15) with reduced thickness thereby obtaining a first aluminium foil with a first reduced thickness and a second aluminium foil with a second reduced thickness.

IPC Classes  ?

• B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets
• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning