Abstract: The automatic plant for the continuous electroplating treatment of metal bars according to this invention comprises, in succession, an automatic introduction unit for bars to be treated, a degreasing and cleaning unit for the bars, an electrolytic treatment unit having one or more successive cells and associated devices for electrical contact with the bars in movement, a handling device for the bars, a final polishing or burnishing unit for the bars and an extraction and storage unit for the treated bars, wherein the automatic introduction unit for the bars possesses means for reciprocal electrical and mechanical connection in alignment of the bars successively introduced and the extraction unit possesses means for separating the successive bars and for storing them side by side, the handling device for the bars carrying out an axial movement of them simultaneously with rotation of the bars on themselves.

Abstract: The cell for continuous electrolytic deposition treatment of bars or the like according to the invention comprises a closed vessel containing at least one tubular anode through which a bar for electrolytic processing can be conveyed in the axial direction, the bar being inserted into the vessel and leaving the vessel through respective inlet and outlet mouthpieces equipped with sealing means, means being present for supplying a flow of electrolytic bath to the anode or anodes and transferring the bath from the anode to the vessel, producing a flow of the bath inside the anode and parallel to the bar to be processed, dielectric spacing means also being present between the bar inlet mouthpiece and the end of the adjacent anode and adapted to define a zone of controlled chemical attack before electroplating begins.

Abstract: A sealing device with flexible seals, for chromium-plating of bars and the like, in which each seal has a central aperture for the passage of the bars, defined by flexible fins delimited by slits directed substantially in a radial direction, starting from the inner edge of the central aperture; each seal moreover is composed of two sheets of soft plastic material welded together and enclosing steel springs to stiffen the fins. The sealing device preferably comprises a combination of at least two coupled seals, in which the sealing fins of one of the seals overlap corresponding slits between adjacent fins in the other seal.

Abstract: A method for removing the hydrogen in the continuous chromium-plating process of large bars or long-shaped pieces and the like; according to the invention, the chromium-plating bath is made to recycle under pressure by feeding it into the space inside the chromium-plating anode and directing the jets of chromium-plating fluid towards the surfaces of the pieces during the passage inside the anode itself. This invention concerns moreover, a double-tank apparatus with a double sealing system at both ends and with a system for recycling the chromium-plating fluid, from the outer tank to the inner one, inside the anode.

Abstract: Method and apparatus for continuous chromium electroplating of bars; bars are mechanically and electrically connected in an uninterrupted row, which is rotated and advanced along a straight path through an anode immersed within an electroplating bath. The bar surfaces, in the course section crossing the electroplating anode, are brushed clean by means of a stationary brushing device, acting on rotations bars.

Abstract: A method and apparatus for electroplating elongated metal pieces, such as bars, pipes, cylinders, according to which an electroplating bath is provided between an electrode and the surface opposite thereto of the piece to be plated; the electrode and associated electroplating bath are moved along the surface of the piece to be plated, while replenishing the electroplating liquid.