It is also the fastest "freezing electrode on the market today. This allows the welder to have the greatest control over the weld puddle - a useful attribute when welding open roots
cheers,
stk
Time for an RFI including a bold font "WTF is this" as well..?? LOL
Not once in 37 yrs (23 as a CWI), have I ever seen that particular symbol...I'm sure it means something to the guy that drafted it..but nothing the the rest of the planet would know.
Stk
Interesting subject...aside from the snowball fights.! lol I'm pretty much done with winter...in the oil sands its just too damned long and cold. The novelty wears off around mid October.
So here is my question on this: How Does D1.1 workaround the joining of HSS materials. if only 1 F number...
Good day all.
I am working as a CSA level II (CWI) Welding inspector on a SAGD site in N. Alberta.
I have noticed in the various areas of our plant a number of instances of: eg 1-2" 150# A105N RFWN Flg coupled to a similar sized flange of A182 Gr 316/316L RFWN flg. The gasket used is a fairly...
What Stan said...
A WPS is a written set of instructions given to a welder for joing set types of materials. These materials are grouped in Sect IX of the ASME BPVC in P No's. They did so to reduce the number of welding procedures an organization would have to have and proove.
A PQR is...
If he changes his employer I agree he doesn't automatically "renew" his qualifications, but he doesnt lose them either. They are date based and for 2 years. However most shops and sites will have him do a shop test upon arrival to ensure he is capable of making the welds he is qualified for and...
"..Non-pressure retaining fillet welds.." No interpretation needed.? A Fillet weld that does not retain or hold Pressure...such as welded structural internals...trays and the like.
As Fizza notes, and I am assuming you are in a vessel shop, then I would also assume the majority of your WPS's...
If you look at QW 461.9
Qualification in 3G Plate Qualifies him:
Pipe over 24"OD F & V only
Pipe less than 24" to 2.875" OD F only
I would look at QW461 for limits on the above positions
..and as a subset this also qualifies him for Fillet welds in F,H & V only.
rgds,
stk
..the other advantage of bridge tacking is that one does not require a Certified B Pressure welder to make said tacks. In Alberta we have Journeyman welders, and then B Pressure Welders . Typically a B welder will earn from $7.50-10/hr more than a journeyman and as such is employed to make...
It would seem to me that any heat treatment done after forming which was performed at a hihger termperature than any previous heat treatment pre forming, would in fact negate said previous heat treatment.
So the only test specdimens required would be of material Normalized prior to forming...
Your best bet would normally be Sect IX. However after looking (2010 version), I do not see that UNS Number.? Are you sure you have the right #.?
Other than that, I would try using the chemistry of the base material to a consumable that matches by comparing to known alloys in the P number...
DekDee:
I am fully aware of essential variables and how they relate to procedure and performance qualification...but AGAin, my question stands - how can you add P8 qualification if a performance test was done using F3/F4 filler metals.? My belief is that you cannot. Yet I see this all the time...
stan..I appreciate the response. There are definitely differences between 7018 and a 308L-15 but not that much../.;but thats not my main question
It does not make sense to me when a guy is qualified P1-P8, P15 with F3/F4 yet not all of those base materials can be welded with F4 electrodes...
Tack welding: If the said tack welds are to be left in place then those tacks must be performed by a Qualified Pressure welder. That makes sense as the tacks become part of the pressure weld...right.?
In my part of the world, tacks right in the root are pretty much "verboten" and we use "bridge...
weldstan is Right. It looks to me that your WPS would need changing to weld at 10C.
As it stands, if your WPS states a minimum preheat of 23c, then you cannot weld at 10C..it must be pre-heated to 23C. (which is kinda of a weird number for preheat if I may say so...but I think I understand why)...
A guy tests out using F3/F4 on SA106B 6" Sch 80 coupon.
He gets a ticket that says he is qualified in base materials P1 - P11, P15E and in many places in Ab, that is governed by whether the company he works for actually has Qualified-Registered Procedures with ABSA for those base materials. So...
The world is awash with those that simply can't handle change... Well, you stick with your pencil sonny.!
My question stands and is applicable to any of the mechanical forums.
Im looking at BlueBeam Revu...anyone do a comparison with Adobe XI..?
