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Frequently asked questions - General information about our products

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  • In mechanics, it’s the moment exerted to tighten a threaded assembly. It’s a force applied at the end of a moment arm of length L, that is expressed in Newton-metres (N.m.).
    Tightening torque = force (F) x distance (L). In a prestressed assembly, the screw is subjected to tension and the assembled pieces to compression. The tightening torque values specified in our documentation must be respected.
  • Cataphoresis, also known as electro-phoresis depositing (cationic electro-depositing), is a surface treatment that electro-chemically deposits an epoxy type base on a metal surface. The piece is immersed in a bath of water-soluble paint. The paint is electro-deposited by a DC current and is uniformly bonded on the piece, including in recesses and on sharp edges.
  • Salt spray resistance with no rust is 250 h on sharp edges and 500 h on plane surfaces.
  • Cataphoresis does not resist UV radiation. A paint finish should therefore be applied for any outdoor exposure. Cataphoresis is therefore frequently used, like a primer, to enhance corrosion resistance properties, or it may be used alone for non-visible parts (under vehicles, inside mechanisms and various machines, etc.).
  • No, the protective coat prevents the paint from bonding to the surface.
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