Title: Method in mechanical working of aluminium and aluminium alloys in presence of cooling lubricant and concentrate of cooling lubriant
Application Number: 87103471 Application Date: 1987.05.13
Publication Number: 1016196 Publication Date: 1988.02.03
Approval Pub. Date: 1991.08.14 Granted Pub. Date: 1991.08.14
International Classifi-cation: C10M173/00
Applicant(s) Name: Berol Suisse SA Address:
Inventor(s) Name: Elina Sandberg;Rolf Skold
Attorney & Agent: WU DAJIAN QUAN JING
Abstract:
    Mechanical working of aluminium or aluminium alloys is carried out in the presence of a water-based cooling lubricant, which has the form of a stable solution and contains as lubricating and corrosion inhibiting agents a combination of (a) a carboxyl compound having a hydrophobic group of 7-22 carbon atoms and (b) a tertiary alkyl alkanol amine having a molecular weight of less than 300 and (c) alkyl compound containing at most 6 carbon atom having molecular weight of less than 400. The amounts of the carboxyl compound and the tertiary alkyl alkanol amine are chosen so that a base/acid equivalent ratio between the alkanol amine and the carboxyl compound is less than 1.0. A concentrate, which after dilution with water, may be used as a cooling lubricant is also disclosed.
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