I am trying to weld 16 gauge mild steel to 5/8" mild steel square tubing, and can't seem to find the proper settings and/or techniques to make it work. I'm using a Maxstar 200 TIG machine, argon gas (11cfm), 3/32 rod, 1/16 tungsten with cup size 4, and have tried everything in the range of 90 - 120A with only ugly results. I think I should be using thinner rod, but it's all that I have available -- is there any way to make this work? Thanks for any help.
90-120 is a little high for that thin of material. You'll burn right through it. i usually stay around 45-60a when working with 16GA. now obviously its not going to penetrate the 5/8" very much so you'll have to find a happy medium. Just make sure you have both surfaces good and clean before starting.
dirtmidget33
- dirtmidget33
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Really need smaller filler rod too, will make it easier for to get a better looking weld. That 3/32 gonna freeze the puddle quick.
Last edited by dirtmidget33 on Thu Apr 16, 2015 11:29 am, edited 1 time in total.
why use standard nozzles after gas lens where invented. Kinda of like starting fires by rubbing sticks together.
exnailpounder
- exnailpounder
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You need to concentrate the heat on the thick metal and kinda wash the puddle onto the thinner metal. Welding thick to thin is a challenge. Some pics of what your welding would help. 120 amps won't make a dent in 5/8" steel. You need enough amps to start a puddle in the thick metal . Try using some MIG wire for filler if you have any.
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
- TRACKRANGER
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What is the wall thickness of the 5/8" square tubing?
EWM Phonenix 355 Pulse MIG set mainly for Aluminum, CIGWeld 300Amp AC/DC TIG, TRANSMIG S3C 300 Amp MIG, etc, etc