Cold-rolled lubricating oil for steel plate

Abstract

Provided is a lubricating oil capable of giving such a cold rolling oil as to improve productivity by making a cold rolling speed still higher, when a steel sheet is subjected to cold rolling at a high speed, to make resistance to deposition of the oil around a mill and treatment of waste water excellent, and to solve problems of cleaning deficiencies, etc., in a cleaning process. This lubricating oil for the cold rolling oil for the steel sheet contains (a) oils which contain 12-14C fatty acids in an amount of >=50 wt% in fatty acids composing oils and (b) compound esters.

Description

technical field [0001] The present invention relates to cold rolling oil for steel plate and lubricating oil used therein. Background technique [0002] As the rolling oil supply system for steel plate cold rolling, there are two types of circulating rolling oil supply system and direct rolling oil supply system. The so-called circulating rolling oil supply system is to supply a large amount of oil to the steel plate and roll. The rolling oil emulsion is used to recycle the used rolling oil emulsion to remove the wear iron powder and use it for a long time. The so-called direct rolling oil supply system is to supply a small amount of rolling oil emulsion to the rolled steel plate. At the same time, a large amount of water is supplied to the rolls, and the used rolling oil emulsion is not recycled but treated as waste water. [0003] In the past, when direct supply cold rolling (hereinafter referred to as direct cold rolling), palm oil or tallow or rolling oil added with oil...

AI Technical Summary

Problems solved by technology

[0011] The task of the present invention is to provide a kind of cold-rolling oil and lubricating oil used therein. In the occasion of carrying out high-speed cold-rolling of steel plate, there is no problem such as the cost of rolling oil increases and the stability of lubrication is low, so that the previous rolling It becomes possible to increase productivity through high-speed rolling, which cannot be achieved with oil, and at the same time, it can prevent oil and scum from accumulating around the rolling mill, and the waste water treatment and lubricity are excellent, and it can solve the problems of poor washing in the washing process, etc.

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