Aqueous one step type lubricating agent for efficient cold...

C - Chemistry – Metallurgy – 10 – M

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C10M 173/00 (2006.01) C10M 105/24 (2006.01) C10M 125/00 (2006.01) C10M 143/00 (2006.01) C10M 159/06 (2006.01) C10M 173/02 (2006.01)

Patent

CA 2419732

An aqueous one step type lubricating agent for efficient cold forging, characterized in that it comprises (A) a water-soluble inorganic salt, (B) a wax and (C) a metal salt of a fatty acid in a form dissolved or dispersed in water, wherein weight ratios of solid contents are 0.60 to 0.70 for (B)/(A) and 0.1 to 0.3 for (C)/(A). The water-soluble inorganic salt can be selected from among a sulfate, a silicate, a borate, a molybdate and a tungstate. As the wax, use can be made of a synthetic wax being dispersible in water and having a melting point of 70 to 150~C. As the metal salt of a fatty acid, use can be made of a reaction product of a saturated fatty acid having 12 to 26 carbon atoms with at least one metal selected among zinc, calcium, barium, aluminum and magnesium.

L'invention concerne un agent lubrifiant aqueux de type à un stade permettant un forgeage à froid, caractérisé en ce qu'il contient (A) un sel inorganique hydrosoluble, (B) une cire et (C) un sel métallique d'un acide gras sous une forme dissoute ou dispersée dans de l'eau. Les rapports en poids des teneurs en matières sèches étant de 0,60 à 0,70 pour (B)/(A) et de 0,1 à 0,3 pour (C)/(A). Le sel inorganique hydrosoluble peut être choisi dans le groupe comprenant un sulfate, un silicate, un borate, un molybdate et un tungstate. Pour ce qui est de la cire, on peut utiliser une cire synthétique dispersible à l'eau et présentant un point de fusion compris entre 70 et 150 ·C. En ce qui concerne le sel d'un acide gras, on peut utiliser un produit de réaction d'un acide gras saturé comprenant de 12 à 26 atomes de carbone avec au moins un métal choisi dans le groupe comprenant le zinc, le calcium, le baryum, l'aluminium et le magnésium.

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