If you are you welding heavier stuff regularly then maybe pulsemig would be the better choice? But if you have to stay with TIG and are struggling to get root fusion on 15mm, then thicker will be even tougher.
Different gas mix is a must for thicker stuff and if you do the 15mm with pure argon...
Ah ok, so the 15mm is to get a better range, but will the company actually be doing any Ali fillets above 20mm?
What gas mix are you using, argon / helium?
As Brad says, gas flow is high so turn it down but check the flow at the torch, not what it says on the regulator.
Did you have any more...
15mm plate is pretty thick, what’s the reason for doing a test on that thickness? Are you doing a procedure test or a welder qualification test? If it’s the latter then 5/6mm thick would be more than ample (depending on the standard that you are testing to).
All good answers below, maybe also...
You are right it is mostly a paperwork thing, but the welding coordinator should be overseeing the work and making sure it’s right, just doesn’t work out that way.
It’s the same with NDT though, I’ve been to places and found defects, marked up all the defects for repair but then when I go back...
It depends what it says in the ‘range of qualification’ on your weld procedure record. I can’t remember when it changed but ISO 15614-1 never used to give a range CO2 content.
What was the reason for switching s?
There are now means to report it and if done it will now be dealt with.
It’s self policing for all the bigger firms as they don’t even get a look in on tenders if they haven’t got it now.
For the smaller firms up to now it’s been a case of nothing will happen to them u less something goes...
Thanks for the recommendation Matthew :thumbup: Hope you are getting on ok with it all?!
CfA are decent for smaller firms for sure, there is also Alcumus, but they are short on auditors at the moment so have been getting long lead times.
You need to have a chat with a welding engineer and get a weld procedure for it.
Without knowing the grade of material there could be (and probably is) a need for some pre heat at least.
Would also need to carry out NDT on the first one as it’s a new procedure.
A welder being ‘coded’ doesn’t...
Best bet if your not sure is to just set up a quick sample, put a 20mm fillet on and see how many runs it takes.
Pre heat will depend on material CEV and EN1011 / client spec. What’s the thickness?
300 amps with 1mm wire is pushing it anyway, what’s on your as run WPQR?
Engineer / designer would give the spec that it’s made to (EN1090 for example) which then gives the acceptance requirements and also the weld size. The manufacturer then follows their weld procedures in terms of settings etc, but as for the amount of runs it’s really just down to the welder.
If...
What does your RWC say? Are we talking carbon steel S355? EN1011 gives guidance on pre heat temps etc.
Also, depending on procedure you should be aloud to change wire diameter as long as it doesn’t take you outside the specified heat input range of the WPQR, just need to write a new WPS.
Too much weld is unacceptable to all the specs I know of when dealing with structural and bridges etc. Excess amounts are specified along with all other weld imperfections.
The A & B is the test area and EN287 (now superseded by ISO 9606) / ASME are the standards the plate would have been inspected to for acceptance / rejection. This would have been for a welder qualification test sample.
If your employers customers are not asking for any kind of qualification, then there is probably no need for it to be honest. You could do a basic BS 4872 qualification which is for qualifying welders without a procedure, that would at least show competence in case anyone does ever ask. But if...