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Hobart 140 - I've never use gas with it

 
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steve1040
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PostPosted: Thu Mar 12 15 9:25 am    Post subject: Hobart 140 - I've never use gas with it Reply with quote

I have a Hobart 140 that I've used for the last couple of years.

I've never thought about using gas and wouldn't know where to start learning how to use the welder with gas.

I looked at Hobarts 101 training but couldn't find anything.

Can you guys recommend any good reading material?

What are the pros/cons of using gas in my welding.

Thanks
Steve
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Maniac
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PostPosted: Thu Mar 12 15 4:30 pm    Post subject: Reply with quote

with gas a much cleaner weld...less spatter .
If you are welding outside you do have to be careful that the gas is not blown away or your welds will look terrible and be weak.

http://www.millerwelds.com/resources/tech_tips/MIG_tips/

http://www.millerwelds.com/resources/articles/Proper-welding-wire-selection/
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gandrfab
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PostPosted: Thu Mar 12 15 8:53 pm    Post subject: Reply with quote

If you do go gas, get on owner bottle or 2.
Renting them is a scam if you are not burning a bottle every few days.
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Bkndsdl
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PostPosted: Fri Mar 13 15 3:03 am    Post subject: Re: Hobart 140 - I've never use gas with it Reply with quote

steve1040 wrote:
I have a Hobart 140 that I've used for the last couple of years.

I've never thought about using gas and wouldn't know where to start learning how to use the welder with gas.

I looked at Hobarts 101 training but couldn't find anything.

Can you guys recommend any good reading material?

What are the pros/cons of using gas in my welding.

Thanks
Steve


Steve, I have the same welder. I absolutely love it. I have used both flux core and gas with it.

To go with gas, you really need to know what you want to weld. With this small 110, going with a gas setup means you will be limited in what you can weld with it. This machine, in GMAW (Gas Metal Arc Welding, which is what you'll be doing) mode, will be good for sheetmetal up to 1/8". It isn't going to give you what you want if you're welding any thicker. Plus, with fluxcore it's almost pull the trigger and you are welding proficiently; with GMAW (Or sometimes referrred to as short arc), you will definitely have to work the puddle to produce the weld you want, and the joint design and in particular cleanliness has to be right as well.

I prefer .035" flux core wire with this machine for welding 1/8" on up, and sheet metal up to 1/8" I use C25 gas, which is 75% argon 25% C02, and .023 wire. If you had a 220 machine, I'd say weld everything with GMAW; it's that much cleaner. You can get different gas like straight C02 and get much better penetration but you will generate a lot more spatter that way, basically negating the benefits.

Here's one book I just found on Amazon; just do a search for GMAW.

Wreckless may have some info for you, I think he uses nothing but GMAW.

http://www.amazon.com/Gas-Metal-Arc-Welding-Handbook/dp/1590708660

Just my .02.
Hope this helps!
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steve1040
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PostPosted: Fri Mar 13 15 3:40 am    Post subject: Re: Hobart 140 - I've never use gas with it Reply with quote

Bkndsdl wrote:
steve1040 wrote:
I have a Hobart 140 that I've used for the last couple of years.

I've never thought about using gas and wouldn't know where to start learning how to use the welder with gas.

I looked at Hobarts 101 training but couldn't find anything.

Can you guys recommend any good reading material?

What are the pros/cons of using gas in my welding.

Thanks
Steve


Steve, I have the same welder. I absolutely love it. I have used both flux core and gas with it.

To go with gas, you really need to know what you want to weld. With this small 110, going with a gas setup means you will be limited in what you can weld with it. This machine, in GMAW (Gas Metal Arc Welding, which is what you'll be doing) mode, will be good for sheetmetal up to 1/8". It isn't going to give you what you want if you're welding any thicker. Plus, with fluxcore it's almost pull the trigger and you are welding proficiently; with GMAW (Or sometimes referrred to as short arc), you will definitely have to work the puddle to produce the weld you want, and the joint design and in particular cleanliness has to be right as well.

I prefer .035" flux core wire with this machine for welding 1/8" on up, and sheet metal up to 1/8" I use C25 gas, which is 75% argon 25% C02, and .023 wire. If you had a 220 machine, I'd say weld everything with GMAW; it's that much cleaner. You can get different gas like straight C02 and get much better penetration but you will generate a lot more spatter that way, basically negating the benefits.

Here's one book I just found on Amazon; just do a search for GMAW.

Wreckless may have some info for you, I think he uses nothing but GMAW.

http://www.amazon.com/Gas-Metal-Arc-Welding-Handbook/dp/1590708660

Just my .02.
Hope this helps!


Thanks
Bkndsdl

Maybe I'll stick with flux core - I don't do much with sheet - I use .035 also
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Wreckless
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Joined: 15 May 2009
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PostPosted: Fri Mar 13 15 10:47 pm    Post subject: Re: Hobart 140 - I've never use gas with it Reply with quote

Bkndsdl wrote:
steve1040 wrote:
I have a Hobart 140 that I've used for the last couple of years.

I've never thought about using gas and wouldn't know where to start learning how to use the welder with gas.

I looked at Hobarts 101 training but couldn't find anything.

Can you guys recommend any good reading material?

What are the pros/cons of using gas in my welding.

Thanks
Steve


Wreckless may have some info for you, I think he uses nothing but GMAW.

Just my .02.
Hope this helps!

Nope, I have nothing to add. I think you have this one covered just fine. Very Happy I tried a 110V mig albeit an el cheapo HF unit. I had to give up figuring I just wasn't cut out for this style of welding, the welds I was producing just plain sucked. I went back old school stick until I tried out a 220V rig, 75/25 mix shield. I was producing welds as good as any other hack out there in no time. I seldom reach for the stick anymore, only when the need arises, mostly repair work where I just cannot get the metal clean enough. Otherwise, for new fab work, I love my 220v mig. Stay with what you know on the 110v unit, seems to be working well for you.
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TrailerBuilder
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PostPosted: Sat Mar 14 15 8:05 am    Post subject: Reply with quote

I run my Miller 250 exclusive for everything I build. But I do have a Miller 135 that is a 110 machine. I use it a lot when I get the call to fix something out in the hay field, or lately, Ive been doing some gates and front walls on boat docks. I also have used it to do some tractor and blade/bucket repair work for my dad and uncle in Arkansas because they got a hold of one too many rocks. I have ran both gas and flux, depending on what Im welding. But, I have had no problems welding 1/4" steel with either. I have welded 1/2 plate before for a sawmill close by. I beveled everything and it did take a bit of time to weld everything up solid, but to this day, that piece of 1/2 plate takes a major amount of abuse and the weld has shown no signs of ever coming loose. My point is, don't under estimate these little 110 machines...the good ones...Miller and Hobart. If a person knows what they are doing and how to weld, they can be very handy to have in the shop.
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