PURPOSE: The titled lubricant for steel stock providing the same effect as that of phosphate treatment, comprising phosphoric acid, a nitrate, a lubricating component such as a mineral oil, etc., a basic substance such as an alkali metallic hydroxide, etc., and water as essential components.
CONSTITUTION: The aimed lubricant comprising (A) phosphoric acid, (B) a nitrate (e.g., zinc nitrate, etc.,), (C) one or more lubricating components selected from a mineral oil (having preferably 1.0W1,000mm2/s kinetic viscosity at 40°C), fats and oils (e.g., beef tallow, colza oil, etc.,) and a synthetic lubricant oil (e.g., recinoleic acid condensate, etc.,), (D) one or more basic substances selected from an alkali metallic hydroxide (e.g., NaOH, etc.,), an alkali metallic carbonate, an amine (e.g., monoethylamine, etc.,) and an imine (e.g., aziridine, etc.,) and (E) water as essential components.
ISHIKAWA TAKATOSHI
SAITO KAZUHIRO
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