Frequently Asked Questions (FAQs)
1. Can any MIG welder use a spool gun?
No, not all MIG welders can use a spool gun. Spool guns must be compatible with the specific welding machine being used. There is no universal spool gun standard, so it is important to ensure compatibility between the spool gun and the welder.
2. Why use a MIG spool gun?
A MIG spool gun is used when welding with soft aluminum wire to eliminate potential problems. Spool guns only need to feed the wire a short distance before it reaches the weld puddle, avoiding issues that can arise when pushing soft aluminum wire through a regular gun over long distances.
3. Can you flux-core weld with a spool gun?
Yes, some MIG welders, like the MIG180 180-Amp MIG Welder With Spool Gun, offer the capability to run flux-core wire without shielding gas using the same equipment as MIG welding.
4. Do you need gas to weld aluminum with a spool gun?
Yes, when welding aluminum with a spool gun, pure argon gas is required. The commonly used argon and CO2 gas mixture for welding steel is not suitable for aluminum welding.
5. Can you weld stainless steel to steel with a MIG welder?
Yes, it is possible to weld stainless steel to steel using a MIG welder. Proper machine setup, including using a Teflon wire liner for good wire feed and preventing contamination, is recommended for welding stainless steel.
6. Can you weld aluminum and stainless steel with a MIG welder?
Pulsed MIG welding is well-suited for welding aluminum and stainless steel. The controlled heat of the pulsed MIG process helps reduce distortion and burn-through. It also provides good weld puddle control and higher deposition rates.
7. What is the advantage of a spool gun?
Using a spool gun eliminates issues like wire kinking and birdnesting, which are common when welding aluminum. This saves time and material, as there is no need to constantly fix wire problems in the torch.
8. Can any MIG welder run flux core?
Most MIG welders are designed to be compatible with flux core wire, although not all may explicitly mention it. With some adjustments to the machine, a MIG welder can usually weld with flux core wire.
9. What happens if you weld aluminum with flux core?
Welding aluminum with flux core can result in poor weld quality and excessive spatter. Aluminum fluxes used for welding are corrosive and hygroscopic, absorbing water from the air, which negatively affects the weld.
