Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-03-15
1979-05-29
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041296, C25F 300, C25F 314, C25F 316
Patent
active
041566378
ABSTRACT:
An apparatus and method for electro-chemical treating or electro-polishing the interior surfaces of a domed end, including an access port extending therefrom, of a large cylindrical vessel. For electro-polishing, the apparatus includes a cathode rod unit which is fastened to a mounting flange on the access nozzle such that the cathode thereof extends through the length of the nozzle in spaced relation to its interior surface. The cathode rod is insulated from the nozzle by a dielectric mounting disc positioned on the rod perpendicularly thereto. The external end of the cathode rod unit includes an electrical terminal to which direct current may be applied during electro-polishing. The external electrical terminal mounting lessens the amount of apparatus required to be inside the vessel during electro-polishing. The method for electro-polishing utilizes the cathode rod unit by mounting one of the same in each nozzle in one domed end before it is welded to a vessel body. The domed end is then stood upright and filled with an electro-polishing bath. An additional curved cathode is positioned in spatial relation to the dished interior surface of the domed end, and adapted for rotation to sweep across the entire dished surface. A direct electric current is passed between both cathodes and the vessel acting as an anode through the electro-polishing bath. Since both the cathodes can be charged at the same time, as well as separately, the entire interior surfaces of the domed end may be polished together.
REFERENCES:
patent: 3682799 (1972-08-01), Jumer
patent: 3919061 (1975-11-01), Jumer
patent: 4001094 (1977-01-01), Jumer
LandOfFree
Method for electro-processing large vessels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for electro-processing large vessels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for electro-processing large vessels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-230065