| 摘要 |
PCT No. PCT/CH94/00031 Sec. 371 Date Sep. 28, 1995 Sec. 102(e) Date Sep. 28, 1995 PCT Filed Feb. 15, 1994 PCT Pub. No. WO95/21952 PCT Pub. Date Aug. 17, 1995A process and apparatus for electrolytically surface-coating special metal workpieces in which the electrolyte is conveyed in a controlled circuit in and around the electrolysis region in that most of it is conveyed at a high flow rate, at a higher inlet pressure, through the space between a cathodically connected workpiece and an anode and a smaller proportion of it is conveyed at a lower flow rate upwards to the rear of the anode away from the cathode. After leaving the electrolysis region the electrolyte is taken into a separate overflow tank and/or in the feed back system. The device for implementing said process is an electrolysis tank, inlet lines or apertures for the electrolyte at the base of the chamber between the cathodically connected workpiece and the anode or below and behind the anode, at least one overflow tank connected on or beneath the electrolysis container into which the electrolyte is fed after passing through the electrolysis region and a feed back device for the electrolyte with a filter.
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