A method for improving oil cleanliness by adding a small amount of water to rolling oil

Abstract

The invention provides a method adding a trace amount of water into rolling oil to increase oil cleanliness. The method is characterized in that 100-1000ppm deionized water is added into the rolling oil used in plate and strip cold rolling through an atomization manner to allow the water to be evenly dispersed in the rolling oil, standing is performed for more than 1 hour, the polarity effect of water molecules allows tiny trace impurities in the rolling oil to accumulate and be separated out, the impurities settles to the bottom, and accordingly the rolling oil is purified, and the cleanliness of the oil is increased; or the rolling oil added with the water is filtered by a plate filter in a circulating manner to clean the rolling oil; the method is especially suitable for being used to remove the impurities below 2 micrometers; the impurities cannot accumulate and settle when the water content is lower than 100ppm, the water may accumulate to form water drops which can corrode an aluminum plate when the water content is higher than 1000ppm, and accordingly the appropriate water content range is 100-1000ppm.

Description

technical field [0001] The invention belongs to the field of purification of rolling oil, and in particular relates to a method for improving the cleanliness of the oil by adding a small amount of water to the rolling oil. The method is also applicable to occasions where mineral oil is used as a lubricant in other metal processing. Background technique [0002] The general rolling oil for cold rolling of existing aluminum strips is lubricated and cooled by mineral oil base oil and (alcohol, ester, acid) additives. During the rolling process, aluminum powder will fall off, rolls will be worn, and some other impurities will be mixed in. As a result, the rolling oil becomes dirty, the cleanliness is reduced, and it needs to be filtered before it can be used again. The improvement of the cleanliness of rolling oil is generally obtained by filtering, that is, using non-woven fabric-diatomaceous earth-clay as the medium, under sealing and a certain degree of vacuum, the rolling oi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the poor cleanliness and lack of ability to remove impurity particles less than 2 μm in the rolling oil of the existing aluminum cold rolling mill, and to provide a method for improving the filtering effect and effectively filtering the impurity particles less than 2 μm. The following steps are implemented:

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