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I have a century 140 welder It does seem to have any power. I'm using .023 wire with co2 gas and with the welder turn up as high as it goes the weld just beads up without any penetration and I was only welding 14 ga material.

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That doesn't sound right. Double check your ground and the tip the wire feeds through -- if it is damaged/worn/burnt it will not transfer full power to the wire. After that, it would be time to check the connections from the transformer to the leads for dirt/loose connections.

Posted on Nov 29, 2009

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The tip of my Lincoln 140 welder develops a droplet of steel quite quickly on it. I have the 25 to 30 cfm of argon flowing. I believe I have the right voltage and feed. ???


reset you wire feed speed and the voltage for the thickness of metal being welded
it indicates that the voltage is far too high -probably to compensate for the high wire feed speed
gas is wasted at that flow rate
set up welding screens around the job to stop breezes interfering with the gas at the tip
the gas at the tip should be flowing only strong enough to maintain a gas bubble around the arc
That is the purpose of the gas is only to displace oxygen and so give a good weld

Feb 25, 2017 | Lincoln Welding Tools

1 Answer

I have a lincoln sp-100 welder and despite having a good ground the weld quality is just not there. Any help is appreciated


Hi,
Let's troubleshoot this one:
1) Make sure you have the right polarity for the wire you are using: Innershield wire (no gas) ground clamp must be on the + side. Solid Wire (gas use) ground clamp to negative side.
2) If gas is used: Mild steel welding requires Argon/CO2 mix 75/25 or 90/10. Using pure CO2 you will create a lot of sparks and a lot of fumes. Stainless Steel welding requires a Trimix gas of Argon/Helium and CO2. Aluminum Welding requires pure argon. Any use of gas requires a steady gas flow of no more than 25 SCFH. If you use more than that or less you will find porosity on the welding.
3) Your work piece must be cleaned before welding (no grease, dirt or paint).
4) Check your machine welding chart for wire speed and voltage.
If you still experience problems with welding quality, check you input power voltage, make sure it doesn't fluctuate.
Goooooood Luck.

Aug 30, 2011 | Lincoln Mig Welder Trigger Switch Magnum...

1 Answer

I HAVE A HANDLER 140 I PURCHASED NEW RECENTLY, THE WELDER FEEDS WELL BUT THE WELD WIRE ONCE APPLIED IS NOTHING BUT **** AND FALLS OFF THE METAL WHEN STRUCK WITH A HAMMER. i AM USING SOLID WIRE AND THE...


Newer welders as hobart and miller are set up from factory to use innershield wire therefore polarity is set up as inverse. Check inside your machine and check that ground cable is on negative side. Your gas must be mix argon/CO2 or pure CO2 (not recommended).
Other potential problem is wire not being a mild steel one. Check you have gas flow out of your nozzle.
That's all I can think of.

Jan 26, 2011 | Hobart Handler 140 Mig Welder

1 Answer

Currently welding with fluxcore wire in my hobart 140, do I have to buy another mig gun to weld solid wire and using argon/co2 gas mixture?


you need ar/co2 95 5 change contact tip to what ever size wire you r going 2 use .035 .045 whatever

Dec 10, 2010 | Hobart Welding Tools

3 Answers

What gas do i use for welding mild steel .I have argon and co 2 canisters


Can use argon/co2 mix or CO2 the wire usually has the gas named on the lable

Aug 26, 2010 | Clarke Power Products Clarke 130EN...

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Hobart 140 voltage drop when welding in all setting using 30 wire and uni mix gas will start out welding good then will not ?????


Check your input line voltage. 115 volt Mig welders / plasma cutters need stable voltage / current. Test to see if the voltage drops to below 100 volts when welding. If so, find a more stable power supply.

Mar 05, 2010 | Hobart Welders 500505 Handler 140 MIG &...

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Welder work OK with flux wire, cannot get penatration in MIG mode


Are you using combination argon/co2 gas? You need a flow regulator and should have it set for about 10cfm. Note that this is different than a pressure regulator. The problem you note is a result of inadequate or improper gas.

Mar 10, 2009 | Campbell Hausfeld WG2060 Mig/Flux Versa -...

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Mig Question


MIG stands for Metal Inert Gas welding, many times called Wire-feed.. Also referred as GMAW (Gas Metal Arc Welding). The "Metal" refers to the wire which is what is used to start the arc. It is shielded by inert gas and the feeding wire also acts as the filler rod. A semi-automatic process, it is fairly easy to learn and use.

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