NF ISO 7120

Petroleum products and lubricants — Petroleum oils and other fluids — Determination of rust-preventing characteristics in the presence of water

Le présent document spécifie une méthode permettant d''évaluer les huiles de pétrole et autres fluides pour indiquer leur aptitude à empêcher le rouillage des parties ferreuses en cas de mélange d''eau avec l''huile ou le fluide. Cette méthode s''applique aux huiles minérales inhibées, et en particulier aux huiles pour turbines à vapeur, aux huiles de graissage par circulation et aux huiles hydrauliques et fluides non hydrocarbonés, qui comprennent les fluides plus denses que l''eau. Dans de nombreux cas, comme par exemple dans les engrenages d''une turbine à vapeur, de l''eau peut se mélanger au lubrifiant, ce qui peut conduire au rouillage des pièces et éléments ferreux. Cet essai permet de savoir dans quelle mesure des huiles minérales inhibées peuvent aider à empêcher ce type de rouillage.

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