No passwords, No popups, No AI, No cost:
we earn from your affiliate purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
ted_yosem
Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


  pub
  The authoritative public forum
  for Metal Finishing since 1989

-----

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.




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"