A Technical Version of Achieving a Brass Coated Surface on Steel Wires

Abstract

The paper presents in detail the technological flow for achieving, nowadays, for a brass coating on steel wires, as well as a proposed technological procedure (and patented by the patent 0011467) to get the same type of surface on the steel wires. It is noted that steel wires which have been finally brass coated are the constituent elements of motor vehicle tires, so the: "grip force" achieved by this coating and the rubber mass are particularly important.The current technological procedure for the construction of a brass coated surface on the steel wires involves a first phase of copper deposition (in fact in two steps: the first step consists in an electrodeposition followed by the second step: chemical deposition of copper). In the second phase the electrodeposition of Zn is achieved. Finally, the two previous depositions have been diffused (through a process called thermo-diffusion). The thermo-diffusion is achieved by direct electrical heating, but provides a product "with problems" for the subsequent wiredrawing process.We propose replacing it with a simpler technological procedure involving the achieving of the brass coating layer on steel wires through a single electrodeposition technique followed, by a final wiredrawing process [1].