Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Failure avoidance: Stress corrosion cracking causes titanium plate heat exchanger failure
Plate-and-frame exchangers usually contain cold-formed corrugations. The resulting residual stress may induce stress corrosion if the appropriate environmental conditions exist in either fluid stream. In a titanium plate, a hole was formed as a result of stress corrosion cracking at cold-formed corrugations. Cracking was caused by stress corrosion that initiated at surfaces exposed to sour water containing dissolved chlorides at 250 degree F (121 degree C), with a pH below neutral. A material upgrade is in order to avoid stress corrosion failure in the exchangers. Titanium Grade 12 (UNS R53400) has far more stable passivity in brine at depressed pH and elevated temperatures than unalloyed titanium, making it a candidate for a plate material in this heat exchangers.
Failure avoidance: Stress corrosion cracking causes titanium plate heat exchanger failure
Plate-and-frame exchangers usually contain cold-formed corrugations. The resulting residual stress may induce stress corrosion if the appropriate environmental conditions exist in either fluid stream. In a titanium plate, a hole was formed as a result of stress corrosion cracking at cold-formed corrugations. Cracking was caused by stress corrosion that initiated at surfaces exposed to sour water containing dissolved chlorides at 250 degree F (121 degree C), with a pH below neutral. A material upgrade is in order to avoid stress corrosion failure in the exchangers. Titanium Grade 12 (UNS R53400) has far more stable passivity in brine at depressed pH and elevated temperatures than unalloyed titanium, making it a candidate for a plate material in this heat exchangers.
Failure avoidance: Stress corrosion cracking causes titanium plate heat exchanger failure
Turissini, R.L. (Autor:in) / Bruno, T.V. (Autor:in) / Dahlberg, E.P. (Autor:in) / Setterlund, R.B. (Autor:in)
Materials Performance ; 37 ; 61-63
1998
3 Seiten, 3 Quellen
Aufsatz (Zeitschrift)
Englisch
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