Lubricants suitable for hydroforming and other metal...

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 159/06 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2512682

The present invention discloses a hydroforming process for metal parts that uses liquid-film and solid-film lubricants. The lubricants used in the invention are particularly useful for die-side lubrication. The process includes a step in which a ductile metal part is over-coated with either the liquid-film or solid~film lubricant. The liquid lubricants preferably include an oil and a optionally a surfactant. The solid lubricants preferably include a hard wax and optionally a surfactant.

L'invention concerne un procédé d'hydroformage pour des parties métalliques faisant appel à des films lubrifiants liquides et solides. Les lubrifiants utilisés dans l'invention sont particulièrement utiles pour une lubrification côté poinçon. Le procédé comprend un étape dans laquelle une partie en métal ductile est recouverte soit d'un film lubrifiant liquide ou d'un film lubrifiant solide. Les lubrifiants liquides comprennent de préférence une huile et éventuellement un surfactant. Les lubrifiants solides comprennent de préférence de la cire dure et éventuellement un surfactant.

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