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-----

Pitting




2005

On rencontre des problèmes de percements sur des installations d'eau sanitaire sur un réseau essentiellement à base de cuivre. Quelles sont les solutions pour palier au problème ?
NB : installation réalisée en cuivre écroui (environ 5 ans)
- brasure au phosphore
On pense que c'est un phénomène (PITTING).
Dans l'attente de votre réponse, d'avance merci SARL THIRION PLOMBERIE CHAUFFAGISTE - SUIPPES - FRANCE



2005

Bon soir !

Google Auto Translation ---

One primarily encounters problems of borings [ with the internal bore ? ] on installations of domestic water on a network containing copper.

Which are the solutions for stage with the problem?

NB: installation made out of hard-drawn copper (approximately 5 years) - brazing with phosphorus.

One thinks that it is a phenomenon (PITTING). In waiting of your answer, in advance thank you


Have you used H3PO4 as the flux for brazing -- ?

Sometimes Hard Drawn copper contains inclusions which usually cause elongated corrosion areas in line with the "draw-marks" on the tube. But not pits.

Is the areas in question all copper to copper ?

Copper to Brass or Copper to Iron

Google Auto Translation ---

Avez-vous employé H3PO4 comme flux pour souder --?

Le cuivre parfois dur dessiné contient les inclusions qui causent habituellement des secteurs ovales de corrosion en conformité avec les "dessiner-marques" sur le tube. Mais pas puits.

Les secteurs en question est-ils tout le cuivre à cuivrer? Cuivre au laiton ou cuivre à repasser

Mel Platt
Mel Platt
geriatic mel - Maidenhead, U.K.




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