Apparatus for electropolishing tubes

Details Apparatus for electropolishing tubes Apparatus for electropolishing tubes

1981-04-29

1983-01-18

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204225, 204237, 204272, 204275, C25F 700, C25D 1700

Patent

active

043691013

ABSTRACT:
Tubes, especially nuclear fuel element jacket tubes, in many cases must be polished internally as well as externally. Previously there was not a satisfactory process for doing this. An electropolishing process for the inner surface of tubes for achieving uniform polishing is desirable. This is accomplished with apparatus in which a metal lance is inserted into the tube being treated. Insulating spacers at the point of the lance and rearwardly thereof from a cathode therebetween spaced uniformly from the inner surface of the tube. Electrolyte flows through such space and preferably is supplied from the interior of the lance.

REFERENCES:
patent: 2764540 (1956-09-01), Farin et al.
patent: 2859157 (1958-11-01), Curtiss, Jr.
patent: 3202598 (1965-08-01), Covington et al.
patent: 3506557 (1970-04-01), Wentzell
patent: 3533926 (1970-10-01), Zubak et al.
patent: 3720595 (1973-03-01), Kohler
patent: 3974042 (1976-08-01), Angelini

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