What weld Process is suitable
What weld Process is suitable
(OP)
Hello All
The user's specification indicates that weld shall not be anodic with respect to the base material.
The material in question is API 5L X 65.
Welding is done with SAW and GMAW combination.
What flux (If SAW is used) will result in Cathodic Weld.
If GMAW is used fully, whether changing the gas composotion result in change in Cathodicity/Anodicity? If so what is the recommended Gas composition.
Suppose the potential measured of the pipe base material is "- 0.5" and the potential of the weld is "-0.4" (I persume it is the potential that will be determined as the measure of Anodicity or Cathodicity), is the Weld Anodic with respect to Pipe.
The user's specification indicates that weld shall not be anodic with respect to the base material.
The material in question is API 5L X 65.
Welding is done with SAW and GMAW combination.
What flux (If SAW is used) will result in Cathodic Weld.
If GMAW is used fully, whether changing the gas composotion result in change in Cathodicity/Anodicity? If so what is the recommended Gas composition.
Suppose the potential measured of the pipe base material is "- 0.5" and the potential of the weld is "-0.4" (I persume it is the potential that will be determined as the measure of Anodicity or Cathodicity), is the Weld Anodic with respect to Pipe.





RE: What weld Process is suitable
RE: What weld Process is suitable
Otherwise it does not appear to be a meaningful requirement.
Fluxes for SAW are not designed to control anodic condition.
http://www.welding-advisers.com/
RE: What weld Process is suitable
Vainala
RE: What weld Process is suitable
Your post makes perfect sense, I'm wondering if there also may be a concern over hardness?
RE: What weld Process is suitable
RE: What weld Process is suitable
RE: What weld Process is suitable
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/