Tweet
bobcat 225 and tig alum
need to tig an aluminum oxygen cylinder base back on to cylinder what setting to use with weldcraft tig torch and argon gas.i know i have to scratch start on a piece of copper, it is 3/16 thick aluminum. machine is bobcat 225NT 
-
-
you need a high-frequency arc starter and stabilizer
like the miller HD-251 to weld aluminum with the bobcat
they run around $1000.00 -
Why copper?2- XMT's 350 cc/cv
1- Blue star 185
1- BOBCAT 250
1- TRAILBLAZER 302
1- MILLER DVI
2- PASSPORT PLUS
1- DYNASTY 200 DX
1- DYNASTY 280 DX
1- MAXSTAR 150 STL
1- HF-251 BOX
1- S-74D
1- S-75DXA
2- 12-RC SUITCASES
1- 8-VS SUITCASE
2- 30 A SPOOLGUNSComment
-
I hope you're only making something decorative. There's NO welding allowed on any high pressure cylinder. Not even during manufacturing.RETIRED desk jockey.
Hobby weldor with a little training.
Craftsman O/A---Flat, Vert, Ovhd, Horz.
Miller Syncrowave 250.
sigpicComment
-
conversion to cold smoker
it is to be part of a cold smoker no pressureOriginally posted by Craig in Denver View PostComment
-
-
Thats a new one for me.I think you were misinformed.However you will need high frequency a/c in order to tig aluminum.2- XMT's 350 cc/cv
1- Blue star 185
1- BOBCAT 250
1- TRAILBLAZER 302
1- MILLER DVI
2- PASSPORT PLUS
1- DYNASTY 200 DX
1- DYNASTY 280 DX
1- MAXSTAR 150 STL
1- HF-251 BOX
1- S-74D
1- S-75DXA
2- 12-RC SUITCASES
1- 8-VS SUITCASE
2- 30 A SPOOLGUNSComment
-
alum welding
You can use Heilum to weld alum But it's not as clean.Rent a bottle for a month will it be cheaper.Comment
-
You can DC tig aluminum......why wouldn't it work with the Bobcat?Originally posted by fabricator View PostComment
-
I do not doubt one bit that there is a place for the copper thing...I have heard it as well but it is not used for aluminum. Trust me I did about 10 years on a 225NT Bobcat with an old Linde Freekbox and a #26V torch with a valve and pure argon. That is the minimum you will get by with unless you can score lab grade helium for using DC EN.Originally posted by retiredIW View Post
You should just find someone with a spoolgun or hire a pro to tig it for just welding one item.
Bring your stuff and come on down to my shop and I'll do 'er for free
I like to shoot the bull with old welders
www.facebook.com/outbackaluminumwelding
Miller Dynasty 700...OH YEA BABY!!
MM 350P...PULSE SPRAYIN' MONSTER
Miller Dynasty 280 with AC independent expansion card
Miller Dynasty 200 DX "Blue Lightning"
Miller Bobcat 225 NT (what I began my present Biz with!)
Miller 30-A Spoolgun
Miller WC-115-A
Miller Spectrum 300
Miller 225 Thunderbolt (my first machine bought new 1980)
Miller Digital Elite Titanium 9400
Comment
-
The copper sheet was used for starting an arc in DC Tig welding. Does not contaminate the tungsten as even steel will. Generally used on machines without a lift-arc feature.
As has been mentioned, Hi Freq is required for AC Tig welding. Without it (except for the inverters) the arc will extinguish as it passes thru 0 when switching from DC+ to DC-.Syncrowave 250 DX Tigrunner
Dynasty 200 DX
Miller XMT 304 w/714D Feeder & Optima Control
Miller MM 251 w/Q300 & 30A SG
Hobart HH187
Dialarc 250 AC/DC
Hypertherm PM 600 & 1250
Wilton 7"x12" bandsaw
PC Dry Cut Saw, Dewalt Chop Saw
Milwaukee 8" Metal Cut Saw, Milwaukee Portaband.
Thermco and Smith (2) Gas Mixers
More grinders than handsComment
-
ALum
I welded it with a XMT 304 at work with Helium.We didn't have a hight Feak.Which I do at my shop.I got a Syncrowave 250 DX with a watercooled rig.Miller 252,Miller 140 and 2 other machines/ 675 plasma.Fixing to get Trailblazer 302.My coworker is the one who shown me You could use helium.I tried it I really didn't like the way it welded it wasn't as clean like my new Syncrowave 250 DX LOLComment
-
I hope after 7 months he figgured it out.2- XMT's 350 cc/cv
1- Blue star 185
1- BOBCAT 250
1- TRAILBLAZER 302
1- MILLER DVI
2- PASSPORT PLUS
1- DYNASTY 200 DX
1- DYNASTY 280 DX
1- MAXSTAR 150 STL
1- HF-251 BOX
1- S-74D
1- S-75DXA
2- 12-RC SUITCASES
1- 8-VS SUITCASE
2- 30 A SPOOLGUNSComment
Comment