Method of repairing or protecting an end of a metal tube in a he

Details Method of repairing or protecting an end of a metal tube in a he Method of repairing or protecting an end of a metal tube in a he

1989-06-15

1990-10-02

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Plural layers discontinuously bonded

29523, 29507, 2940216, 2940219, 138 97, F16L 5516, F28F 1102

Patent

active

049606506

ABSTRACT:
To repair a corroded region of the end of a heat exchanger tube, a sleeve is inserted, then expanded into the tube both in the area of the tube sheet and beyond the corroded area, then local welds are made in each of the expanded regions. Thereafter, the end of the sleeve is expanded against the tube in a region inside the tube sheet and above the local weld.

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F. C. DCJs, "Sleeving Saves Nuclear Steam Generator Tubes", Power Engineering, Dec. 1981, vol. 85, No. 12, pp. 73-75.
Metals Handbook, 9th Ed., vol. 4, "Heat Treating", 1983, pp. 3-5, 451-452, 458.varies.459.
Metals Handbook, 9th Ed., vol. 6, "Welding, Brazing and Soldering", 1983, pp. 339-341, 856-859, 862, 889-895.

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