US 7,950,124 B2 · Method for producing metal strips

Abstract

The invention relates to a method for joining cathode metal sheets to form crude strips that can be coiled and rolled and for the production of metal strips of a constant thickness from crude strips that have been produced from cathode metal sheets of varying thicknesses. The aim of the invention is to produce metal strips of a high purity that are devoid of non-metallic inclusions. The method can be used whenever highly pure and/or inclusion-free metal in strip or foil form is required in large quantities. The application of said method is only limited by the fact that the metal is deposited electrolytically on cathodes, and if permanent cathodes are used, must be separated from said cathodes without fragmentation. This is possible with the following metals: lead, zinc, tin, copper, nickel, cobalt, cadmium, iron and gold.

Claims16

Dependent claims

A method of making highly pure and substantially inclusion-free metal strips from whole generally rectangular cathode sheets produced by aqueous electrolysis of at least one metal, the method comprising the steps of sequentially:

sorting the sheets by thickness and ordering them in a row by thickness or, when the sheets are of substantially the same width and length, sorting the sheets by weight and ordering them in a row generally according to weight;
fusion-welding the sheets together in the row at leading and trailing edges of the sheets;
feeding the row of fusion-welded sheets through a roll stand and thereby leveling the sheets into a continuous uniform strip.

Dependencies are inferred from the claim text.

Method for producing metal strips

Life of this patent

Method for producing metal strips

Life of this patent

Abstract

Claims16