Arcelor France

Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Arcelormittal France

Yoshiki Takahama

Shigeru Ogawa

Toshiyuki Shiraishi

Guy Hauret

Luc Vanel

Maxime Laugier

Pascal Masson

The present invention provides a method for supplying lubricant to various kinds of steel sheets with different qualities in cold rolling without any restrictions, such as lubricant supplying apparatus or lubrication conditions. This method comprises storing two or more kinds of lubricant such as A and B, having different compositions, selecting one lubricant or a mixture lubricant of the above A and B in accordance with the friction coefficient between the steel sheet to be cold rolled and a work-rolls, and supplying an emulsion comprising a mixture of the lubricant A and/or B and heated water.

Method of supplying lubrication oil in cold rolling

A method of supplying lubricating oil in cold-rolling by emulsion lubrication, characterized by comprising:

Method of supplying lubricating oil in cold-rolling

The present invention provides a method of supplying lubrication oil in cold rolling for stable rolling without heat scratches or slip and achieving high productivity and improvement of the unit consumption of lubrication oil, that is, a method of supplying lubrication oil in cold rolling by supplying a predetermined kind of emulsion lubrication oil comprised of a mixture of rolling oil and water at the rolling stand inlet from nozzles, the method characterized by measuring or estimating the pressure in the lubrication nozzle pipe (lubrication nozzle pressure), controlling the lubrication nozzle pressure of the rolling stand where lubrication is susceptible to become excessive with the predetermined emulsion lubrication oil to 0.5 MPa or more, and, while doing so, supplying the lubrication oil to the roll bite inlet of the stand by direct injection.

Growing community of inventors

Futtsu, Japan

Yoshiki Takahama