Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1991-11-01
1992-08-11
Tufariello, T. M.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
C25D 1700
Patent
active
051376113
ABSTRACT:
Apparatus for horizontally plating one surface of conductive sheet with a metal or metal alloy. The apparatus includes an electrolyte holding tank, a horizontally disposed enclosed electrolyte conduit having extended inlet and outlet portions, a variable speed pump for passing electrolyte from the holding tank through the conduit and a rectifier for supplying electrical current. The holding tank includes means for dissipation of entrapped gas bubbles generated during metal deposition or caused by aeration. The conduit has a horizontal opening including an insoluble anode within the opening for defining a plating cell. The anode is positioned parallel to the axis of the conduit and in alignment with the opening. The plating cell includes means for supporting the sheet above the opening. The inlet and outlet portions of the conduit are positioned in-line with the plating cell. The inlet portion has a cross sectional area greater than the cross sectional area of the plating cell and is positioned sufficiently upstream of the plating cell so that electrolyte is stabilized when flowing between the anode and the sheet. Only the bottom surface of the sheet is exposed to electrolyte flowing through the conduit.
REFERENCES:
Influence of Electrolyte on the Electrodeposition of Zinc-Alloy, Trans. ISIJ, vol. 26, 1986, pp. 53-60, Tetsuaki Tsuda.
The Interaction Between Electrogalvanized Zinc Deposit Structure and the Forming Properties of Steel Sheet, Plating and Surface Finishing, vol. 76, No. 3, Mar. 1987, pp. 62-70, J. H. Lindsay et al.
High Current Density Electroplating of Zinc Nickel and Zinc-Iron Alloys, Plating and Surface Finishing, vol. 76, No. 3, Jul. 1986, pp. 68-73, A. Weymeersch et al.
Heitzenrater Julie A.
Parrella Larry E.
Roberts Timothy R.
Ward Donald H.
Armco Inc.
Bunyard R. J.
Fillnow L. A.
Johnson R. H.
Tufariello T. M.
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