copper backing
copper backing
(OP)
Hi
I work in spiral gas pipe production. We use copper backing for internal welding but we have a copper polution problem. Are there any persons who know good grade of copper with good abrasive resistance?
I work in spiral gas pipe production. We use copper backing for internal welding but we have a copper polution problem. Are there any persons who know good grade of copper with good abrasive resistance?





RE: copper backing
RE: copper backing
RE: copper backing
RE: copper backing
we used copper bar with 99.9% Cu amd .0001% Be with HB=71.8 and have that problem. On the other hand we can not use copper grade with high hardness because of our equipment limitation.I wana know how many amount of beryylium should be needed for good result?
RE: copper backing
These are water cooled, right?
Another option would be Be-Ni. Very expensive, good heat transfer and good electrical conductivity. Not as good as Cu but better than any other options.
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Plymouth Tube
RE: copper backing
Aluminium Bronze nickel or berrylium copper?
RE: copper backing
RE: copper backing
RE: copper backing
As I said before we are producing spiral steel pipe by submerged arc welding and used copper backing for ID welding. we have copper taint on the OD surface for six month. At first we think these copper taints comes from the copper backing but copper density is more than iron so how copper can comes up and set at the surface of outer weld? Morover we use wire with copper coating. Is it possible that these copper taints comes from these copper coating when this coating flaking?
RE: copper backing
RE: copper backing
These copper apear when we remove slag from outer weld.