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US 5,490,886 AGranted
Methods for quenching metal
AssigneeFMC Corporation
InventorDouglas G. Placek
Life of this patent
Estimating the term…
Abstract
A method for quenching hot metals especially iron steel or copper with a quenching fluid comprising a major proportion of an organic phosphate ester. The preferred esters are trialkyl phosphates and tri(alkyl phenyl) phosphates. The quenched article may exhibit improved anti-wear properties.
Claims11
A method for quenching a hot metal, at least the surface of which is formed from iron, steel or copper or an alloy of iron, steel or copper, which comprises contacting the metal with a quenching fluid comprising a major proportion of an organic phosphate ester.
Dependencies are inferred from the claim text.