Process for improving resistance of metal bodies to stress corro

Details Process for improving resistance of metal bodies to stress corro Process for improving resistance of metal bodies to stress corro

1988-02-16

1989-06-27

McDowell, Robert

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148135, 376305, 376900, C21D 914, C21D 908

Patent

active

048426555

ABSTRACT:
A process for improving resistance of pressure vessel shells, tubesheets, tubes, pipes, pipe fittings and machine parts to stress corrosion cracking comprising heating at least those portions of such bodies subject to danger by stress corrosion cracking to a critical elevated themperature level, cooling at least the surface portions of the metal body subject to stress corrosion cracking and then permitting such treated portions of the metal body to come to ambient temperature.

REFERENCES:
patent: 3770256 (1973-11-01), Godin et al.
patent: 4512820 (1985-04-01), Mori et al.
patent: 4659398 (1987-04-01), Heller et al.
patent: 4699671 (1987-10-01), Jacobs et al.
patent: 4702880 (1987-10-01), Porowski et al.

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