Tube inner surface electropolishing device

Details Tube inner surface electropolishing device Tube inner surface electropolishing device

1997-05-22

1999-09-28

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204225, 204272, 204280, C25F 700

Patent

active

059581956

ABSTRACT:
The tube inner surface electropolishing device includes an electrolyte delivery system to cause electrolyte to flow through the tube whose inner surface must be electropolished. An electrical cable having an electrode engaged to its distal end is slowly moved through the tube while an electrical current from a power supply passes through the electrode and the tube wall and the electrolyte flowing therebetween. Several electrode embodiments are disclosed including electrodes that include a chain of elements having alternating insulator and electrode elements, an electrode including a quantity of metallic wool enclosed in a permeable insulating member, and a flexible insulating member formed from a cylindrical tubular section which is axially compressible to produce a series of projecting flexible arms, so that any one section can be compressed to enter a smaller opening than the tube to be polished.

REFERENCES:
patent: 2764540 (1956-09-01), Farin et al.
patent: 4369101 (1983-01-01), Wolff et al.
patent: 4645581 (1987-02-01), Voggenthaler et al.
patent: 4772367 (1988-09-01), Menzel et al.
patent: 4826582 (1989-05-01), Lavalerie et al.
patent: 5507923 (1996-04-01), Stouse et al.

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