ROLLING OIL SUPPLYING METHOD FOR COLD ROLLING

Title:

ROLLING OIL SUPPLYING METHOD FOR COLD ROLLING

Document Type and Number:

WIPO Patent Application WO/2001/066277

Kind Code:

A1

Abstract:

A rolling oil supplying method by a circulation system for cold rolling, which involves a first rolling oil supply system for supplying by a circulation system an emulsion rolling oil to rolling rolls and steel sheets under rolling and a second rolling oil supply system for supplying an emulsion rolling oil only to the front and rear surfaces of steel sheets under rolling, and which comprises a step of supplying from the second rolling oil supply system an emulsion rolling oil to which a surfactant the same in kind and oil resisting concentration as the surfactant of the first rolling oil supply system is added and which is conditioned to have an emulsion average grain size larger than that of the first rolling oil supply system, preferably at least 20 $g(m)m, and a step of merging an emulsion, not deposited on steel sheets under rolling, of the second rolling oil supply system into an emulsion of the first rolling oil supply system, whereby a low-cost, stable lubricity capable of preventing chattering and heat scratches even during a fast rolling can be obtained.

Inventors:

NISHIURA NOBUO (JP)
SODANI YASUHIRO (JP)
KIMURA YUKIO (JP)
SAKURAI YOSHIOMI (JP)
SAKAI HIROYOSHI (JP)
TOMOZUNE SHIGEHIRO (JP)

Application Number:

PCT/JP2000/001431

Publication Date:

September 13, 2001

Filing Date:

March 09, 2000

Export Citation:

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Assignee:

NIPPON KOKAN KK (JP)
NISHIURA NOBUO (JP)
SODANI YASUHIRO (JP)
KIMURA YUKIO (JP)
SAKURAI YOSHIOMI (JP)
SAKAI HIROYOSHI (JP)
TOMOZUNE SHIGEHIRO (JP)

International Classes:

B21B27/10; B21B45/02; B21B1/28; B21B37/00; (IPC1-7): B21B45/02; B21B27/10

Foreign References:

JPH0237911A	1990-02-07
JPS61253101A	1986-11-11
JPH07214121A	1995-08-15
JPS61111713A	1986-05-29
JPS5779016A	1982-05-18
JPS5641010A	1981-04-17

Other References: