METHOD FOR CONTINUOUSLY PRODUCING AN ELECTRICAL CONDUCTOR MADE OF COPPER-PLATED AND TIN-PLATED ALUMINIUM, AND CONDUCTOR SO PRODUCED

摘要

A method for continously producing an electrical conductor made of an at least partially aluminium-based central core coated by continuous electroplating with at least one metal layer, including core surface pre-treatment, characterised in that it comprises the steps of (a) electrochemically copper-plating the core in an aqueous bath held at a temperature of 20-60 DEG C and containing KCN, CuCN, K2CO3 and KNaC4H4O6 with a current strength of 1-10 A/dm<2>; (b) rinsing at room temperature; (c) electrochemically tin-plating the core in an aqueous bath held at a temperature of 20-60 DEG C and essentially containing tin dissolved in methane sulphonic acid as well as optional additives, with a current strength of 1-100 A/dm<2>; and (d) rinsing in water at 60 DEG C.