Alloy pipes and methods of making same

Details Alloy pipes and methods of making same Alloy pipes and methods of making same

2005-08-02

2005-08-02

Valentine, Donald R (Department: 1742)

Electrolysis: processes, compositions used therein, and methods

Electrolytic erosion of a workpiece for shape or surface...

Gap maintenance or defined tool-workpiece gap

C205S674000, C205S685000, C205S686000, C204S22400M, C204S225000

Reexamination Certificate

active

06923900

ABSTRACT:
A profiled tube (50b) comprising a high carbon content alloy (greater than 0.3%), superalloy or other high creep strength material, has a fluted bore with internal fins (52b) and intervening valleys or troughs (56b). Such a tube is made by centrifugal casting and subsequent electrochemical machining by drawing of an electrode (104) along the tube while at the same time passing electrolyte along the tube and around the electrode and also applying an electrical current between the tube and electrode, so that material of the tube passes into solution in the electrolyte.The electrode (104) has the same profile as the end-profile required in the tube (80) but has an inclined working face (124). An electrode rod (92) drives the electrode from one end mounting means (82) to another (84), each of which support the tube (80) and supply/exhaust electrolytic solution. The electrolyte is preferably sodium nitrate, although an acid based system is feasible.

REFERENCES:
patent: 3533926 (1970-10-01), Zubak et al.
patent: 3769194 (1973-10-01), Haggerty
patent: 3954421 (1976-05-01), Heuschkel
patent: 4026779 (1977-05-01), Shaw
patent: 4444589 (1984-04-01), Sugitani et al.
patent: 4690737 (1987-09-01), Vishnitsky
patent: 4826582 (1989-05-01), Lavalerie et al.
patent: 4827074 (1989-05-01), Suwa et al.
patent: 5004529 (1991-04-01), Vishnitsky
patent: 5409675 (1995-04-01), Narayanan
patent: 0 607 894 (1994-07-01), None
patent: 0 812 926 (1997-12-01), None
patent: 0 889 146 (1999-01-01), None
patent: 2 687 946 (1993-09-01), None
patent: 954348 (1964-04-01), None
patent: 969796 (1964-09-01), None
patent: 1 170 644 (1969-11-01), None
patent: 1 281 117 (1972-07-01), None
patent: 2 064 400 (1981-06-01), None
patent: 2 086 291 (1982-05-01), None
patent: 2 100 284 (1982-12-01), None
patent: 2 174 945 (1986-11-01), None
patent: 1 357 161 (1987-12-01), None
patent: 1 516 263 (1989-10-01), None
patent: 1696197 (1991-07-01), None
patent: 1790638 (1993-01-01), None
patent: WO 98/56872 (1998-12-01), None
“Faraday's Law in the Factory” by John A. Cox, Anocut Engineering Company, Chicago, IL.
“The ECM Process”, Anocut Engineering Company, Chicago, IL.
“Electrochemical Machining: a space-age way to refine forged, extruded and cast shapes”, Anocut Engineering Company, Chicago, IL, Feb.-Mar. 1969.
WPI Abstract Accession No. 85-252041 and JP600165343 (Kubota) Aug. 2, 1984 see abstract.
WPI Abstract Accession No: 82-82187E and JP570134536 (Mitsubishi) Feb. 16, 1981 see abstract.
WPI Abstract Accession No. 77-53033Y and JP520070924 (Kubota) Jun. 13, 1977 see abstract.

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