Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
(OP)
if anybody weld 2205 by FCAW compare with GMAW.
Any advice.
Thanks
Any advice.
Thanks
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
|
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
UNS S32205 has become the de facto standard for 2205 base metal, and it means freedom from nitrogen-bearing shielding gases that were necessary with S31803.
My very broad experience is that the higher you go up the CRA ladder, the more cost incentive there is to use GMAW, while FCAW seems to grow more challenged technically (though more user-friendly).
Hope this helps.
"Everyone is entitled to their own opinions, but they are not entitled to their own facts."
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
I also would rather see GMAW used. FCAW welds may look nice but I have seen more than a few issues.
I would suggest including ASTM A923 in your qualifications, it is a test for secondary phases. This is usually only a problem when inter-pass temps are too high.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
A few additional resources may help you in correct evaluations of the above processes for welding DSS. Both FCAW and GMAW are proven processes for DSS, with pros and cons.
For FCAW: Pros,very adaptable process for all welding positions. The Cons- when it comes to impact properties, FCAW welds are grossly inferior than GMAW and many other process, due to excess oxygen in the weld metal. Also the presence of CO2 in the shielding gas may impair corrosion resistance.
Please go tough the explanation of clause 4.4 of API Technical Report 938 C and the following docs from TWI UK for guidance.
https://www.twi-global.com/technical-knowledge/job...
https://www.twi-global.com/technical-knowledge/job...
Vis a Vis the following document from Metrode explains the nice features about this process:- http://www.nickelalloys.com.br/Metrode%20CD%202011...
By and large GTAW & GMAW are vastly superior proceses for welding any DSS grades. However FCAW also has it's share also for welding of DSS.
Thanks
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
stan
RE: Welding 2205 , 3/4 " Thickness, GMAW OR FCAW
Others may have had success with GMAW but beware of the potential for non - fusion.