A method for electroplating and mechanically honing surfaces of a light-ay workpiece is provided comprising placing the workpiece within a honing machine having honing stones and an electrolytic circuit including an electrolyte, applying to said workpiece a first coating by electrolytic deposition within said electrolyte with the honing stones disengaged from said surfaces, and effecting simultaneous honing and electrolytic deposition of a second coating by means of said electrolyte. In this manner the deposition of the necessary basic coating is combined with the procedural step of the simultaneous electroplating and mechanical honing in such a way that the basic coating is deposited in the hone-forming machine itself and with the same electrolytic fluid, so that there is no need for a preliminary plating in an additional unit that is separate from the hone-forming machine.

Method of electroplating and honing light-alloy workpieces

The disclosure provides a method comprising inducing a first current between a source of a countercharge and a first electrode, the first current being through an electrolyte. In some instances, the first current is not present. A second current, in the form of waveform, is induced across the first electrode, the second current being transverse to the first current, and the second current inducing a relativistic charge across the first electrode. Metal from the electrolyte is deposited on the substrate or corroded from the substrate, among other things. The methods, as well as associated apparatus, improve deposition, bonding, corrosion, and other effects.

Electrochemical methods, devices and compositions

not available for EP0017139Abstract of corresponding document: US4274925A method for electroplating and mechanically honing surfaces of a light-alloy workpiece is provided comprising placing the workpiece within a honing machine having honing stones and an electrolytic circuit including an electrolyte, applying to said workpiece a first coating by electrolytic deposition within said electrolyte with the honing stones disengaged from said surfaces, and effecting simultaneous honing and electrolytic deposition of a second coating by means of said electrolyte. In this manner the deposition of the necessary basic coating is combined with the procedural step of the simultaneous electroplating and mechanical honing in such a way that the basic coating is deposited in the hone-forming machine itself and with the same electrolytic fluid, so that there is no need for a preliminary plating in an additional unit that is separate from the hone-forming machine.

Process for the simultaneous electroplating and mechanical honing of surfaces of a workpiece made of light metal

A conductive workpiece is simultaneously machined and electroplated by using a rotatable maching tool against the surface of the workpiece being electroplated and by delivering the electroplating solution thereto under high current density. The electroplating solution comprises an aqueous solution containing one of bronze, cobalt and chromium.

Biora J

Papers

Method of simultaneously electroplating and machining a metal surface