Cold rolling mill lubricant and method of manufacturing steel sheets.

摘要

57 A cold rolling mill lubricant for steel sheets, contains a monoester oil represented by general formula (A):
<Chemistry id="chema01" num="0001"><Image id="ia01" he="8" wi="31" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>(wherein R<Sup>1</Sup> is an alkyl, alkenyl, hydroxyalkyl, or hydroxyalkenyl group having 7 or more carbon atoms, R<Sup>2 </Sup>is an alkylene group, R<Sup>3</Sup> is an alkyl or phenyl group, and n is an integer of 1 to 5), and/or a diester oil represented by general formula (B):
<Chemistry id="chema02" num="0002"><Image id="ia02" he="14" wi="37" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>(wherein each R<Sup>4</Sup> or R<Sup>6</Sup> is independently an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group having 5 or more carbon atoms, R<Sup>5</Sup> is an alkylene group having 2 to 4 carbon atoms, and m is an integer of 1 or more).

A method of manufacturing cold rolling milled steel sheets is also provided.