Re: Welding Questions: help me be better.
[Re: Stanton]
#928057
02/14/11 10:43 AM
02/14/11 10:43 AM
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Joined: Aug 2003
Posts: 4,481 Mesa, AZ
Pat_Whalen
super gas
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super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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purge the gas line
A very good point that many occasional welders forget. Turn on the gas at the regulator, turn on your welder then hit the trigger for a couple seconds. Snip the excess wire off and you're good to go.
Although a lot of people don't do it, try to get in the habit of snipping off the little ball on the end of the wire before starting each weld. This is actually contaminated metal that will contaminate your weld. Yes, its a nuisance.
If you're not interested in wasting wire (not that it's much to purge the lines), pop open the side of the welder and lift up the drive roller, squeeze the trigger on the gun for a couple seconds and replaced the drive roller. But as mentioned, it is important to have gas at the gun the second you start welding.
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Re: Welding Questions: help me be better.
[Re: kilroy]
#928058
02/14/11 10:50 AM
02/14/11 10:50 AM
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Joined: Jan 2003
Posts: 75,326 A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,326
A gulag near you.
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Welding inverted , overhead , you need to use a FLUX core wire , no gas , that's why you are having problems with that weld , that type Hobart is a marginal machine at best, we have one at work , it bites.
so no welding with gun below weld on gas?
Just curious what would be a good one at $450-500 range on 120v? My old man has a 220v bigger brother to mine and you can tell it MUCH hotter but I like the portableness and the fact I only have 120v in garage.
You want to find a machine that has a VARIABLE adjustment for BOTH the wire speed and the Voltage/Current. I have a 120v Lincoln that I got when the 120v machines first came on the market, it's head and shoulders above that Hobart. It has variable adjustments on both and it comes in handy especially when you are dealing with metal that is a little thin after you have ground off the rust. I bought it in the early 90's and it was over $500 then , it wasn't too long after that the POS big box store units came out with the 4 position volt/ current switch so they would meet the cheapy price point.
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Re: Welding Questions: help me be better.
[Re: kilroy]
#928060
02/14/11 02:41 PM
02/14/11 02:41 PM
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Joined: Oct 2005
Posts: 9,098 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 9,098
Ontario, Canada
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Lighten up Francis , with that Hobart welder he has he should to switch to a FLUX CORE wire for overhead stuff , not that the extra current is going to help when welding thinner metals ...
John, John, John, the flux in the wire does nothing other than provide a sheilding gas when it burns off under the heat. In other words it does EXACTLY what the sheilding gas does.
The ONLY advantages to a flux core wire in a small gauge wire is that: a) it saves the hobbyist from having to rent a bottle and buy a flowmeter. b) it will provide better sheilding if welding outdoors.
Otherwise there is no advantage to fluxcore.
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Re: Welding Questions: help me be better.
[Re: Pat_Whalen]
#928065
02/14/11 08:04 PM
02/14/11 08:04 PM
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Joined: Apr 2005
Posts: 12,271 Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
Quote:
Quote:
purge the gas line
A very good point that many occasional welders forget. Turn on the gas at the regulator, turn on your welder then hit the trigger for a couple seconds. Snip the excess wire off and you're good to go.
Although a lot of people don't do it, try to get in the habit of snipping off the little ball on the end of the wire before starting each weld. This is actually contaminated metal that will contaminate your weld. Yes, its a nuisance.
If you're not interested in wasting wire (not that it's much to purge the lines), pop open the side of the welder and lift up the drive roller, squeeze the trigger on the gun for a couple seconds and replaced the drive roller. But as mentioned, it is important to have gas at the gun the second you start welding.
Or turn the wire speed setting to Zero... if you have that capability.
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Re: Welding Questions: help me be better.
[Re: RobX4406]
#928066
02/14/11 08:18 PM
02/14/11 08:18 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
Or turn the wire speed setting to Zero... if you have that capability.
I just hit the off switch on the welder. On mine gas still flows when I hit the trigger.
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Re: Welding Questions: help me be better.
[Re: kilroy]
#928073
02/15/11 10:31 AM
02/15/11 10:31 AM
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Joined: Nov 2003
Posts: 5,048 Atlanta Indiana
Dave Watt
master
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master
Joined: Nov 2003
Posts: 5,048
Atlanta Indiana
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Quote:
Ok been an amateur welder for about 3years now. Im using a hobart 140 (120v) with 75/25 gas set at 20cfh and .023 wire.
The main question is: once in while when I start my weld the wire starts to melt back on itself and not place itself on the metal. It leaves glowing little ball of material on the wire and you have to start again. This is VERY annoying and often causes a bad next weld. What is causing this? Unclean metal? Ground to far from weld? (maybe an amateur )
Another thing would it be advantageous to switch to 0.030 wire for panel work?
Enlighten me so I can be a good amateur!
Kilroy, my Lincoln welder likes a little more gas when doing bodywork type welding, usually set it at 25cfh, 20 just doesn't seem to do as well. .023" wire is great for bodywork. The intermittant problem you have could be wire speed being a little slow, or if your cable is not stretched out properly, the welding wire will bind inside causing a molten ball of wire at the tip.
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Re: Welding Questions: help me be better.
[Re: Stanton]
#928075
02/15/11 11:07 PM
02/15/11 11:07 PM
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Joined: Dec 2006
Posts: 82 Elwood Ne.
64B Body
member
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member
Joined: Dec 2006
Posts: 82
Elwood Ne.
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Quote:
Quote:
Lighten up Francis , with that Hobart welder he has he should to switch to a FLUX CORE wire for overhead stuff , not that the extra current is going to help when welding thinner metals ...
John, John, John, the flux in the wire does nothing other than provide a sheilding gas when it burns off under the heat. In other words it does EXACTLY what the sheilding gas does.
The ONLY advantages to a flux core wire in a small gauge wire is that: a) it saves the hobbyist from having to rent a bottle and buy a flowmeter. b) it will provide better sheilding if welding outdoors.
Otherwise there is no advantage to fluxcore.
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