Nippon Steel Corporation

The Nisshin Oil Mills, Ltd.

Keiichi Tanikawa

Yuzo Higaki

Hiroyuki Goto

Susumu Otsuka

Tadashi Tanaka

Akiyoshi Inubushi

Takao Saito

Masahiro Fujii

Isao Manabe

Tatsuro Obi

Yuji Fujioka

Higaki Yuzo

Tatsurou Obi

Chiaki Maeda

Hideo Kanno

Herein disclosed is a lubricating oil comprising at least one member selected from the group consisting of esterified products obtained by reacting: (A) a compound selected from the group consisting of alcohols represented by the following general formula (I), alcohols represented by the following general formula (II) and hydrogenated derivatives thereof; with (B) a fatty acid having not less than 6 carbon atoms or a mixture of the fatty acid with a rosin selected from the group consisting of rosin, hydrogenated rosins, disproportionated rosins and polymerized rosins: ##STR1## in the general formulas (I) and (II), X.sub.1 and X.sub.2 each independently represents a hydrogen atom or a methyl group and n is an integer ranging from 0 to 10. The lubricating oil is used as rolling mill oils, hydraulic oils cutting-grinding oils, lubricating oils for metal plastic working and those for internal combustion engines.

Lubricating oil

A cold rolling mill lubricant for steel sheets, contains a monoester oil represented by general formula (A):

Cold rolling mill lubricant

Lubricating oils for rolling of steel plates, which are composed of synthetic ester compounds obtainable from tri- or higher-valent alcohols having tertiary nitrogen such as isocyanuric derivatives or ethylene oxide addition products of ethylenediamine and fatty acids, possess well-balanced rolling lubricating properties and mill cleanability at a high level.

Cold-rolling oils for steel plates

A lubricating oil exhibiting superior specific features particularly for metal plastic processing is provided, which lubricating oil comprises at least one member selected from the group consisting of compounds expressed by the formulas I, II, III, IV or V: ##STR1## wherein R.sub.1 is alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl or phenyl and R.sub.2 and R.sub.3 each are CH.sub.2 OCOR.sub.1, CH.sub.2 OH or H wherein R.sub.1 is above; ##STR2## wherein R'.sub.1 and R'.sub.2 each are alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl or phenyl, n is an integer of 1-3 and X is alkyl, alkenyl or phenyl.

Cooling water containing an .alpha.-amino acid suitable for cooling steel strips during their continuous annealing and after their overageing treatment. As the .alpha.-amino acid, aliphatic amino acids, aromatic amino acids, heterocyclic amino acids and their hydrochlorides and acetates are used.

Aqueous solution for cooling cold-rolled steel strip in a continuous

Method for antirust treatment of steel stocks

A method for surface treatment of an electrolytic tin plate, comprising treating a tin-plated steel sheet with an aqueous solution containing at least one selected from the group consisting of pyrazole derivatives and colloidal substances, drying and reflowing the tin-plated steel sheet.

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Kanagawa, Japan

Keiichi Tanikawa