C - Chemistry – Metallurgy – 23 – D
Patent
C - Chemistry, Metallurgy
23
D
C23D 5/00 (2006.01)
Patent
CA 2157008
Method of manufacture of a metal part (1) coated with several layers (4, 5, 6) of mineral materials, said method allowing some oxidation of the metal part's surface. The invention also concerns a hollow revolving part manufactured according to the above-mentioned method. The manufacture of the hollow revolving part comprises the following stages wherein a liquid casting is subjected to: a treatment using magnesium, an inoculation process and a centrifugal operation during which the first layer (4) of the coating (2) is applied to the metal part. The metal part of the invention is for use in the transport of aggressive fluids.
L'invention se rapporte à un procédé de fabrication d'une pièce métallique revêtue de plusieurs couches de matériaux minéraux, procédé tolérant une certain oxydation de surface de la pièce métallique. Elle se rapporte également à une pièce creuse de révolution fabriquée selon le procédé ci- dessus. La fabrication de ladite pièce creuse de révolution comprend les étapes suivantes effectuées sur une fonte liquide; un traitement au magnésium, une inoculation, une opération de centrifugation au cours de laquelle on réalise la première couche dudit revêtement. Utilisation pour le transport de fluides agressifs.
Ebalard Stephane
Genelot Pierre
Perrin Didier
Rey Simone
Marks & Clerk
Pont-A-Mousson S.a.
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