Silicon-based anticorrosive agent

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 5/10 (2006.01) B05D 7/14 (2006.01) C09D 1/02 (2006.01) C09D 5/08 (2006.01)

Patent

CA 2636668

The invention relates to an anticorrosive agent comprising zinc dust, and a second component, an organic binder and a VOC-free or VOC-compatible solvent. In order to allow the metal workpieces to be coated in a reliable and energy- saving manner at constant quality, the binder comprises silicon dioxide and alkali silicate in a molar ratio of at least 4:1. The invention also relates to a device for mixing and metering solid and liquid components of an anticorrosive agent. Said device comprises means for metering the quantities of the respective components of the anticorrosive agent, a solution tank and a mixing device. An application system for applying the anticorrosive agent to a workpiece comprises a solution tank, feeding means, at least one pressure reducer connected to the solution tank and at least one spraying device connected to the solution tank.

L'invention concerne un agent anti-corrosion qui contient un premier composant présentant de la poussière de zinc et un deuxième composant, ainsi qu'un liant inorganique et un solvant sans composé organique volatil (VOC) ou conforme à la réglementation en matière de VOC. Pour une enduction de pièces d'usinage métalliques fiable, économe en énergie et de qualité constante, le liant comporte du dioxyde de silicium et du silicate alcalin dans un rapport molaire d'au moins 4:1. L'invention concerne également un dispositif pour mélanger et doser des composants solides et liquides d'un agent anti-corrosion, ce dispositif comportant des moyens pour mesurer les quantités de chaque composant de l'agent anti-corrosion, un bac de préparation et un dispositif de mélange. L'invention porte aussi sur une installation d'application destinée à l'application d'un agent anti-corrosion sur une pièce d'usinage, cette installation comprenant un bac de préparation, des moyens de transport, au moins un réducteur de pression relié au bac de préparation et au moins un dispositif de pulvérisation relié au bac de préparation.

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