Hot isostatic bonding process for repairing shafts

Details Hot isostatic bonding process for repairing shafts Hot isostatic bonding process for repairing shafts

1990-08-31

1993-06-01

Seidel, Richard K.

Metal fusion bonding

Process

Repairing, restoring, or renewing product for reuse

228186, 2940213, B23K 3100, B23P 600

Patent

active

052152430

ABSTRACT:
A method for repairing drive shafts such that the corrosion stress cracking resistance is increased. More specifically, the drive shaft is removed from the facility in which it is being utilized. After removal, the region of the shaft experiencing cracking is identified and machined to produce a groove having a flat bottom and outwardly tapered edges. Filler material to restore all material removed by machining and provide some excess material is placed in the groove and HIP bonded to the shaft. The excess material is removed from the surface of the shaft to restore the shaft to its original dimension. Due to the filler material having a lower coefficient of thermal expansion than the shaft the repair area is subject to compressive surface stresses.

REFERENCES:
patent: 3004336 (1961-10-01), Timuska
patent: 3039182 (1962-06-01), Harman
patent: 3103066 (1963-09-01), Harman
patent: 4454977 (1984-06-01), Aldinger et al.
patent: 4787549 (1988-11-01), Matay et al.
patent: 4896814 (1990-01-01), Allain et al.

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