HEAT TREATING OIL COMPOSITION

A heat-treatment oil composition contains (A) a first base oil with a kinematic viscosity at 40 degrees C in a range of 5 mm 2 /s to 60 mm 2 /s in an amount of 50 mass% to 95 mass% of a total amount of the composition, (B) a second base oil with a kinematic viscosity at 40 degrees C of 300 mm 2 /s o...

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Bibliographische Detailangaben
Hauptverfasser:	KOBESSHO, Masahiro, TAKASAKI, Norihiro, YAMADA, Masahiro, NOGUCHI, Kenro, ICHITANI, Katsumi, KATO, Masayuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY FUELS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	A heat-treatment oil composition contains (A) a first base oil with a kinematic viscosity at 40 degrees C in a range of 5 mm 2 /s to 60 mm 2 /s in an amount of 50 mass% to 95 mass% of a total amount of the composition, (B) a second base oil with a kinematic viscosity at 40 degrees C of 300 mm 2 /s or more in an amount of 5 mass% to 50 mass%, and (C) an alpha-olefin copolymer. The heat-treatment oil composition according to the invention can reduce distortion unevenness and hardness unevenness accompanying mass-quenching.