Quenching oil compositions

C - Chemistry – Metallurgy – 21 – D

Patent

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Details

C21D 1/58 (2006.01) C07C 47/57 (2006.01) C07C 47/575 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2470323

Quenching oil compositions comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40~C ranging from about 4 to about 45 mm2sec-1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about 100%; and (2) an alkali metal salt of saligenin derivative and optionally, further comprising at least one of (3) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; (4) at least one member selected from the group consisting of metal salts of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids; and (5) at least one member selected from the group consisting of hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts, and methods of heat treating metals comprising employing said quenching oils.

L'invention concerne des compositions d'huile de trempe, qui comprennent: 1) une huile présentant une viscosité cinématique (mesurée selon la norme ASTM D-445) qui, à 40 ·C, est comprise entre environ 4 et 45 mm2sec-1 (environ 40 à 210 secondes universelles Saybolt (SUS)), et une teneur saturée comprise entre environ 80 et 100 %; et 2) un sel de métal alcalin d'un dérivé de saligénine et, éventuellement, un élément parmi: 3) une polyoléfine aliphatique dont le Mn est compris entre environ 300 et 10.000; 4) au moins un élément sélectionné dans le groupe constitué par des sels métalliques de phénols substitués par hydrocarbyle, des acides salicyliques, des acides carboxyliques, et des acides sulfoniques; et 5) au moins un élément sélectionné dans le groupe constitué par des esters succiniques substitués par hydrocarbyle, des amides, des esters-amides, des imides, des sels d'amine, des esters d'acides, des sels d'acide-amides et d'ester-amine, des sels d'amide-amine et des sels d'acide-amine. L'invention concerne des méthodes de thermotraitement du métal mettant en oeuvre lesdites huiles de trempe.

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