can you mig weld DOM tube........

2badfjs · 05-11-05, 03:55 PM

or do you have to tig it???

woody · 05-11-05, 04:04 PM

My cage is Mig'd...and well tested....go for it!

2badfjs · 05-11-05, 04:34 PM

again woody

Texican · 05-11-05, 06:30 PM

your thinkin' chrome moly which has to be TIG'd
Butch

flintknapper · 05-11-05, 08:04 PM

DOM will "mig" just fine. "tig" will make a stronger weld, but may not be necessary for your application. If a "roll cage" is what you have in mind be sure to "gusset" it generously....and you'll be O.K.

2badfjs · 05-12-05, 08:08 AM

very much

fj40Matt · 05-12-05, 08:48 AM

Quote:

Originally Posted by flintknapper

DOM will "mig" just fine. "tig" will make a stronger weld, but may not be necessary for your application.

why?

So long as both have proper penetration wouldn't their strength be equal? Wouldn't the advantages of TIG simply be heat control and visual appearance? I would think an experienced weldor (i.e. not me

) could create an equally strong MIG weld.

Not trying to argue, just interested in more details.

flintknapper · 05-12-05, 03:47 PM

Quote:

Originally Posted by fj40Matt

why?

So long as both have proper penetration wouldn't their strength be equal? Wouldn't the advantages of TIG simply be heat control and visual appearance? I would think an experienced weldor (i.e. not me

) could create an equally strong MIG weld.

Not trying to argue, just interested in more details.

Google "TIG & "MIG" for your answer.

poldo · 06-06-05, 08:08 PM

Quote:

Originally Posted by fj40Matt

why?

So long as both have proper penetration wouldn't their strength be equal? Wouldn't the advantages of TIG simply be heat control and visual appearance? I would think an experienced weldor (i.e. not me

) could create an equally strong MIG weld.

Not trying to argue, just interested in more details.

Tig is always stronger but this doesn't mean MIG isn't strong enough...yes you can MIG weld DOM tubing , Ducati and other high end Bike manufacturers
use MIG on some frames and TIG on others mostly for appearance reasons ..

Mike S · 06-06-05, 08:23 PM

Jim, I can't MIG weld DOM tubing - or much of anything, in fact. You probably can, tho.'

M

2badfjs · 06-07-05, 08:30 AM

Quote:

Originally Posted by Mike S

Jim, I can't MIG weld DOM tubing - or much of anything, in fact. You probably can, tho.'

M

i always thought DOM was a tig only thing,but in fact i was getting crome moly mixed up with DOM.

thanx all!!!!

71-CRUISER · 06-09-05, 07:47 AM

Wht cant you MIG Cromoly?

2badfjs · 06-09-05, 12:56 PM

Quote:

Originally Posted by 71-CRUISER

Wht cant you MIG Cromoly?

thats just what i've heard

honk · 06-09-05, 06:57 PM

Tig done right is much less likely to result in a contamination of the joint welded. It's cleaner in other words.

I'm not positive about this but I think the reason for the chrome-moly restriction comes from the requirements of some racing association's equipment rules specifying chrome moly tubing Tig welded for roll cages as well as tubular chassis. You CAN make chrome moly stick together using Mig, stick, or even carbon arc as far as I know, but they may not give you a strong part.

Planet_X · 06-09-05, 09:26 PM

4130 can me migged just fine and doubt heat treat will be an issue due to material thickness (thinness).

good ole e70s-3 or e80s-2 for more strength

whats the e70s-3 good for 70,000 lbs yeild ? Any welding process is going to weaken the parent metals, destructive testing is about the only way to ensure your weld procedures are the right ones.

Tigs cool and all , but it is not inherently superior to any other welding process, just another option.

Some of these 'rules' are brought over as Honk stated from racing affiliations and their rules...this tig vs. mig thing comes up alot. But something not mentioned much is their restrictions on the NUMBER of bends on any given tube...

Different environments differing requirements for what is good enough I guess

flintknapper · 06-10-05, 03:17 AM

4130 can be sucessfully Migged or Tigged as has been mentioned. In fact (if you know what you're doing) you can O/A with an E70S-6, but most people cant get the flame right.

For anything critical (racing cages) I would "Tig" because it allows the best control of heat, penetration, less contamination, changes physical properties of the parent metal less.

4130 can be migged well enough also, but the chance of building up material without deep penetration is greater. This is where the skill of welder comes into play.

Either way if you Mig or Tig....make sure your material is very, very, clean.

Planet_X · 06-10-05, 08:00 AM

4130 can be migged well enough also, but the chance of building up material without deep penetration is greater. This is where the skill of welder comes into play.

I sniped your quote flintknapper.

When one is welding on stuff .120 wall and thinner, and the biggest reason to use 4130 is to go thinner wall to save weight yet retain strength, lack of penetration wont be the issue. Melt through will be.

flintknapper · 06-10-05, 08:40 AM

Quote:

Originally Posted by Planet_X

4130 can be migged well enough also, but the chance of building up material without deep penetration is greater. This is where the skill of welder comes into play.

I sniped your quote flintknapper.

When one is welding on stuff .120 wall and thinner, and the biggest reason to use 4130 is to go thinner wall to save weight yet retain strength, lack of penetration wont be the issue. Melt through will be.

A good argument for "Tig" here. Overpentration (melt through) is not desireable either. With "Tig" you can back off on your foot pedal or hand control. Mig...you'd have to back down on amperage, or ...(hit it, let cool a second, hit it, let cool......) not ideal.

Proper fittment of joints is critical as well....especially "saddles".

05-11-05, 03:55 PM	#1
2badfjs 80s muncher Join Date: Jan 2005 Location: colorful colorado Posts: 5,043	can you mig weld DOM tube........ or do you have to tig it??? __________________ SOLID ROCK OFF-ROAD http://www.solidrockoff-road.com/ 1991-92 80 series sliders available, WITH CAT PROTECTION! It's how YOU want it, i'm just here to build it for you. SLIDERS FOR 40s' 60s' and 80s' plus a little bit more

05-11-05, 04:04 PM	#2
woody Admin Join Date: Jan 2002 Location: Appleton, WI TLCA# 1548 Posts: 7,612 Blog Entries: 1	My cage is Mig'd...and well tested....go for it! __________________ Brian 'woody' Swearingen

05-11-05, 04:34 PM	#3
2badfjs 80s muncher Join Date: Jan 2005 Location: colorful colorado Posts: 5,043	grassyass again woody __________________ SOLID ROCK OFF-ROAD http://www.solidrockoff-road.com/ 1991-92 80 series sliders available, WITH CAT PROTECTION! It's how YOU want it, i'm just here to build it for you. SLIDERS FOR 40s' 60s' and 80s' plus a little bit more

05-11-05, 06:30 PM	#4
Texican Wise One Join Date: Dec 2002 Location: Bonham Tx. Posts: 2,874	your thinkin' chrome moly which has to be TIG'd Butch __________________ _______________ Conflict is inevitable..... Combat is optional.... Lone Star Land Cruisers REAL TEXAS MUSIC

05-11-05, 08:04 PM	#5
flintknapper IH8MUD Lifer Join Date: May 2004 Location: Deep East Texas Posts: 1,961	DOM will "mig" just fine. "tig" will make a stronger weld, but may not be necessary for your application. If a "roll cage" is what you have in mind be sure to "gusset" it generously....and you'll be O.K. __________________ Flintknapper: '97 Land Cruiser, Moonglow Pearl Chocolate Lab (Kota), I miss you. ΜOΛΩΝ ΛΑΒΕ (come and take them)

05-12-05, 08:08 AM	#6
2badfjs 80s muncher Join Date: Jan 2005 Location: colorful colorado Posts: 5,043	thank you all very much __________________ SOLID ROCK OFF-ROAD http://www.solidrockoff-road.com/ 1991-92 80 series sliders available, WITH CAT PROTECTION! It's how YOU want it, i'm just here to build it for you. SLIDERS FOR 40s' 60s' and 80s' plus a little bit more

06-06-05, 08:23 PM	#10
Mike S IH8MUD Lifer - No Appeal Join Date: Aug 2003 Posts: 2,497	Jim, I can't MIG weld DOM tubing - or much of anything, in fact. You probably can, tho.' M __________________ '96 FZJ80, locked, Hanna sliders, ARB bumper, Kaymar rear with spare carrier, 45 gallon Longranger aux fuel tank, OBA, Hella 4000's, OME lift, 285/75/R16 Revos & AutoHome Maggiolina rooftop tent, etc. Custom Cruiser trailer with OverLand tent www.AutoHomeUS.com TLCA Member #14874

06-09-05, 07:47 AM	#12
71-CRUISER IH8MUD Addict Join Date: May 2004 Location: Atlanta, GA TLCA# 14378 Posts: 703	Wht cant you MIG Cromoly? __________________ Michael Harness co-owner www.AtlantaCustomCreations.com TLCA #14378 03 Tundra 4x4 71 FJ-40 EFI 5.0, NP435, SOA, 38.5s SXs, Disked/Longed/Aussie/4X4 Labs front, welded rear, MetalTech, Saginaw etc.....

06-09-05, 06:57 PM	#14
honk IH8MUD Lifer Join Date: Nov 2004 Location: NW Posts: 2,630	Tig done right is much less likely to result in a contamination of the joint welded. It's cleaner in other words. I'm not positive about this but I think the reason for the chrome-moly restriction comes from the requirements of some racing association's equipment rules specifying chrome moly tubing Tig welded for roll cages as well as tubular chassis. You CAN make chrome moly stick together using Mig, stick, or even carbon arc as far as I know, but they may not give you a strong part. __________________ Specialization is for insects '77 BJ40 FST;'77 FJ40; '65 FJ40;

06-09-05, 09:26 PM	#15
Planet_X IH8MUD Junior Join Date: Feb 2002 Posts: 189	4130 can me migged just fine and doubt heat treat will be an issue due to material thickness (thinness). good ole e70s-3 or e80s-2 for more strength whats the e70s-3 good for 70,000 lbs yeild ? Any welding process is going to weaken the parent metals, destructive testing is about the only way to ensure your weld procedures are the right ones. Tigs cool and all , but it is not inherently superior to any other welding process, just another option. Some of these 'rules' are brought over as Honk stated from racing affiliations and their rules...this tig vs. mig thing comes up alot. But something not mentioned much is their restrictions on the NUMBER of bends on any given tube... Different environments differing requirements for what is good enough I guess __________________ Late 75 fj-40

06-10-05, 03:17 AM	#16
flintknapper IH8MUD Lifer Join Date: May 2004 Location: Deep East Texas Posts: 1,961	4130 can be sucessfully Migged or Tigged as has been mentioned. In fact (if you know what you're doing) you can O/A with an E70S-6, but most people cant get the flame right. For anything critical (racing cages) I would "Tig" because it allows the best control of heat, penetration, less contamination, changes physical properties of the parent metal less. 4130 can be migged well enough also, but the chance of building up material without deep penetration is greater. This is where the skill of welder comes into play. Either way if you Mig or Tig....make sure your material is very, very, clean. __________________ Flintknapper: '97 Land Cruiser, Moonglow Pearl Chocolate Lab (Kota), I miss you. ΜOΛΩΝ ΛΑΒΕ (come and take them)

06-10-05, 08:00 AM	#17
Planet_X IH8MUD Junior Join Date: Feb 2002 Posts: 189	4130 can be migged well enough also, but the chance of building up material without deep penetration is greater. This is where the skill of welder comes into play. I sniped your quote flintknapper. When one is welding on stuff .120 wall and thinner, and the biggest reason to use 4130 is to go thinner wall to save weight yet retain strength, lack of penetration wont be the issue. Melt through will be. __________________ Late 75 fj-40

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