Tig 3/8 to 16 ga 316...amps?
Tue, 31 Aug 2021 15:52:00 GMT
did some of the above today.No pedal, red 3/32, 15CFM, 1/16" 316 filler.and 85 amps, some lap welds and some fillets all 3/8" to 16 gu.I got the job done, but i'm wondering if the amps were a bit on the low side as it was hard to get a good flow going. I didnt' like to go higher becuase of the 16 gauge.Now im home and thinking about it i wonder if i could turn it up a bit and hold of the thin stuf and more on the thicker,which i was doing anyway?what amps would you all recomend?Sorry no pics, forgot my phoneG
Reply:Just try it and see what works best for you. 85 amps isn't much for 3/8".David Real world weldin. When I grow up I want to be a tig weldor.
Reply:I agree with DavidR, 85amps is a bit lean for 3/8" which, to me, would explain your difficulty in getting a flow going. Yes, you will need to hold the arc off of the thinner material and more so with more amps.BTW, that would be 15CFH (cubic feet per hour) which would be good for about 150amps if you were to use the 1cfm per 10amps 'rule of thumb'.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:Originally Posted by gordfraserdid some of the above today.No pedal, red 3/32, 15CFM, 1/16" 316 filler.and 85 amps, some lap welds and some fillets all 3/8" to 16 gu.I got the job done, but i'm wondering if the amps were a bit on the low side as it was hard to get a good flow going. I didnt' like to go higher becuase of the 16 gauge.Now im home and thinking about it i wonder if i could turn it up a bit and hold of the thin stuf and more on the thicker,which i was doing anyway?what amps would you all recomend?Sorry no pics, forgot my phone
Reply:Sorry Dave, but im back home now and thinking to much. Thought id get armed with some info before the morning.Sorry that is per hour duanb. got all mucking fuddled.william, thanks for the startup tip. sorta makes sense now you say it.you said"You are going to get some more warping the slower you go"does this mean that im better with more heat going faster rather than less heat going slower.Thanks guy'sG
Reply:Originally Posted by gordfraserSorry Dave, but im back home now and thinking to much. Thought id get armed with some info before the morning.Sorry that is per hour duanb. got all mucking fuddled.william, thanks for the startup tip. sorta makes sense now you say it.you said"You are going to get some more warping the slower you go"does this mean that im better with more heat going faster rather than less heat going slower.Thanks guy's
Reply:i actually work with welding those two different sizes (3/16 and 16 gauge) at work all the time...granted i use a pedal, but my technique is to get the puddle started on the 3/16 and pull it down to the sheet metal, that way you minimize the amount of heat on the sheet metal, but you still are getting a puddle across both pieces...and sincei use a pedal i can only estimate, but i run my machine at 135 amps regardless, since its almost all sheet metal i work with, and when doing the above mentioned task, the pedal is usually at about three quarters of the travel, so i would say bump the heat up to about 95 or 100 amps...but remember that is a lot for 16 gauge so keep most of the heat on the 3/16! good luck, and be sure to inform us how it all turns out!
Reply:Thanks folk.i twisted it up to 110A this morning and finished the last 2 welds and things went a lot smoother, and faster, and cooler.wish id done it soonerG
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