Lubricated metal workpiece and method

Details Lubricated metal workpiece and method Lubricated metal workpiece and method

C - Chemistry, Metallurgy

10

M

C10M 105/38 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2186848

A lubricant is provided which has a hardness in the range 0.1 - 10 N/mm at all temperatures in the range 15 - 40 °C. The lubricant consists of at least one full ester of a glycol with a fatty acid, e.g. ethylene glycol dilaurate, optionally mixed with a minor amount of a fatty acid such as stearic acid, and/or a minor amount of a partial ester of a glycol with a fatty acid. The lubricant is useful in the production of press-formed components, and particularly in techniques for converting aluminium sheet to adhesively bonded aluminium structures.

L'invention décrit un lubrifiant d'une dureté comprise entre 0,1 et 10 N/mm à toutes les températures comprises entre 15 et 40 ~C. Le lubrifiant est formé d'au moins un ester complet d'un glycol avec un acide gras, p. ex. le dilaurate d'éthylène glycol, éventuellement mélangé à une faible quantité d'acide gras tel que l'acide stéarique, et/ou à une faible quantité d'un ester partiel d'un glycol avec un acide gras. Ledit lubrifiant est utile pour la production de pièces moulées sous pression, et notamment dans les techniques de transformation des tôles d'aluminium en structures d'aluminium fixées par collage.

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