Trimix on carbon steel?

Tue, 31 Aug 2021 10:08:13 GMT

go to see Welding Machine for Trimix on carbon steel?

Just took a weld test (got the job, although at a lower than advertised rate), and they use trimix on everything. The lead man showed me their product and it looks like they are spray arcing?Sent from my SM-G955U using Tapatalk
Replyrobably not tradional tri mix with helium. Most likely the stargon mixture, argon, co2 and oxygen.
Reply:Originally Posted by M J DProbably not tradional tri mix with helium. Most likely the stargon mixture, argon, co2 and oxygen.
Reply:If the shielding gas mix contains oxygen it will definitely make the arc seem 'hotter' and the weld puddle more fluid.Benson's Mobile Welding - Dayton, OH metro area - AWS Certified Welding Inspector
Reply:Originally Posted by A_DAB_will_doIf the shielding gas mix contains oxygen it will definitely make the arc seem 'hotter' and the weld puddle more fluid.
Reply:Argon based tri mix works very well in short arc and will spray although it takes a little higher voltage than with 95/5 for example.
Reply:Originally Posted by neuralsnafuMight explain what i saw on their completed projects. I probably should have upped the amperage a bit to wet everything out. I was running 19.5v and 3 on the wire feed..Sent from my SM-G955U using Tapatalk
Reply:Originally Posted by HT2-4956If you don't mind me asking...what type and size wire are they running?
Reply:Originally Posted by neuralsnafuLooked to be .045 solid wire. Brand unknown.Sent from my SM-G955U using Tapatalk
Reply:Originally Posted by HT2-4956By "type" I meant....hardwire, dual shield or metal core?
Reply:Originally Posted by neuralsnafuIt was hardwire. In what appeared to be the .045 variety...Sent from my SM-G955U using Tapatalk
Reply:Originally Posted by HT2-4956While I'm happy for you that you got the job I gotta say you don't seem to know the kinds of things I'd expect some who took a particular weld test would know.   If I go some where to take a weld test I usually put some effort into finding out as much as I can about things like type and size of wire and the exact shielding gas composition a head of time.   With that information I can look up and find some recommended settings to make things go quicker and smoother and increase my chances of passing the test.
Reply:Originally Posted by neuralsnafuHonestly, I asked the questions. But this was through a temp agency (temp to hire position). The recruiter supposedly called and asked, called me back and said t plate test, mig, flux and metalcore. Visual pass or fail. Had the same thing yesterday, visual test for mig and flux core. Turns out it was dualshield visual up hill, then you get the 1" plate test, 22* bevels, no gap, grind root and weld 1 pass, still waiting on the bend out on that. Called the lady and told her what the test was, apparently she tells everyone that test is mig and flux, up hill..The last 2 days have taught me that recuiters dont know squat about welding. Ive spent the last few weeks running 030 wire, with 75/25. I went to school at Tws (ugghh), and did well with solid wire and dualshield. I still prefer stick welding...Sent from my SM-G955U using Tapatalk
Reply:Originally Posted by HT2-4956Ah, a temp agency.  That makes it a little more understandable for me.While the weld beads in that picture look pretty nice that some pretty excessive amount of spatter.   The only reason I can think of that a company would go to the extra expense of running a trimix shielding gas would be so they could get a nice smooth spray transfer that wouldn't leave that kind of spatter on something.   That looks like some thing that was welded with 100% CO2 shielding gas.
Reply:Well that explains that.   So far it sounds to me like your new job is going to give you the chance to become a serious "wire monkey'.   If you're going to be running any metal core wire you might find this thread helpful.http://weldingweb.com/vbb/showthread.php...ore&highlight=
Replyon't care what kind of steel product they make......Some " welding salesman " convinced the company man whose job it is to purchase gas a big line of B.S. ....... Only use I've found beneficial for a tri-mix is S.S. .......( bead comes out nice and shiny like a stick weld) other than that , it's a waste of money.$$$$$$$$
Reply:Originally Posted by SmoothOperatorDon't care what kind of steel product they make......Some " welding salesman " convinced the company man whose job it is to purchase gas a big line of B.S. ....... Only use I've found beneficial for a tri-mix is S.S. .......( bead comes out nice and shiny like a stick weld) other than that , it's a waste of money.$$$$$$$$
Reply:So all tri mix is the same?
Reply:This is a pretty good primer on different shielding gas blends for different applications.   It's put out by Praxair so you have discount for all the marketing hype of their supposed "magical" proprietary blends but there's still some good basic technical info in it.http://www.awssection.org/uploads/lo...Gas_Manual.pdf
Reply:So i figured id post an update at 1 week in.We use esab spoolarc 86 in .035. I still haven't asked why they use the oxygen, but it seems to run close to 75/25.These are my best two welds from today, naturally they get ground off... ohh well. 1 week in, and still enjoying every minute of hood time... the grinding blows though.Settings btw 18.5v @ 250ish ipm ( if i did the math right)Sent from my SM-G955U using Tapatalk
Reply:The oxygen adds fluidity to the puddle.
Reply:Originally Posted by neuralsnafuSo i figured id post an update at 1 week in.We use esab spoolarc 86 in .035. I still haven't asked why they use the oxygen, but it seems to run close to 75/25.These are my best two welds from today, naturally they get ground off... ohh well. 1 week in, and still enjoying every minute of hood time... the grinding blows though.Settings btw 18.5v @ 250ish ipm ( if i did the math right)Sent from my SM-G955U using Tapatalk
Reply:Originally Posted by HT2-4956Looks like it's welding pretty nice to me.   Have you found out exactly what the composition of the "Tri-mix" that they're using at this place is yet?
Reply:i used trumix in steel its nice...flst welds if you wanna spray get it past 23 volts and youll start....you wanna short circuit keep it.under 22 and its a nice clean short arc weldSent from my LGLS992 using Tapatalk