Acceptable Welding Methods (section VIII)
Acceptable Welding Methods (section VIII)
(OP)
In general what welding types are acceptable for ASME section VIII?
I need to join some aluminum and am considering a "new" type of welding; friction stir welding. I have searched section VIII and the web and cannot find whether this is kosher with the code.
Can some one help?
I need to join some aluminum and am considering a "new" type of welding; friction stir welding. I have searched section VIII and the web and cannot find whether this is kosher with the code.
Can some one help?





RE: Acceptable Welding Methods (section VIII)
Get your copy of ASME B&PV Code, Section VIII, Div 1 and review Part UW-9 and specifically, UW-27 (b). Inertia and continuous drive friction welding processes are permitted.
RE: Acceptable Welding Methods (section VIII)
RE: Acceptable Welding Methods (section VIII)
RE: Acceptable Welding Methods (section VIII)
What do you think it would take to add FSW to that list? There are some pretty rare/extreme welding types on that list, including explosive welding, one would think FSW would be acceptable as well.
RE: Acceptable Welding Methods (section VIII)
RE: Acceptable Welding Methods (section VIII)
I need to compile some research info and get all my ducks in a row so I can present a strong case.
Any recommendations or information on this code case submission process would be greatly appreciated.
RE: Acceptable Welding Methods (section VIII)
Once the FSW procedure can be qualified you need to focus on mechanical testing of FSW samples comparing mechanical property test results with inertia and continuous drive friction weld results. I would perform RT and elevated temperature tensile testing for materials of consideration.
Still interested?
RE: Acceptable Welding Methods (section VIII)
In my previous job I worked as a researcher at a laboratory that focused on friction stir welding. I know it is a mechanically sound process given the correct range of parameters.
I have access to the right equipment to make this happen. So, it may be a ways down the road (a few years?), but expect to hear more about this at some point.
Any other advice is greatly appreciated.
RE: Acceptable Welding Methods (section VIII)
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Acceptable Welding Methods (section VIII)
https://e-reports-ext.llnl.gov/pdf/348540.pdf
RE: Acceptable Welding Methods (section VIII)
RE: Acceptable Welding Methods (section VIII)
Second, just because Section IX addresses a new welding process doe not mean that Section VIII will permit it. This is why a Code Case would be more efficient and allow FSW to be endorsed by IX and VIII Standards committees.
RE: Acceptable Welding Methods (section VIII)
RE: Acceptable Welding Methods (section VIII)
RE: Acceptable Welding Methods (section VIII)
As I said and as mentioned in the item description it will still be up to other code book sections to adopt this particular welding process. However, just the fact that they have an approved Code Case is a huge start. The Code Case mentioned above was generated for FSW of 5052 aluminum alloy expansion joint bellows. Although limited in scope it is a start.
You would still need to generate a new Code Case specific to fabrication of vessel welds.
RE: Acceptable Welding Methods (section VIII)
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