The goal is to move swiftly and confidently, dragging the bead slightly behind the gun. An excessively high flow rate can create turbulence, pulling atmospheric air into the weld zone and causing porosity.
Optimizing Heat Input for Mig Welding Thin Metal Control
Furthermore, flow rate is just as important as the mixture itself. If the voltage is too high, the arc will become too wide and hot, leading to burn-through.
018-inch wire is highly recommended. Voltage primarily controls the arc length, while wire feed speed determines the amount of current and heat being deposited.
Optimizing Heat Input for Mig Welding Thin Metal Control
A pure CO2 mixture, common for thicker steel, is generally too aggressive and will cause spatter and instability on thin gauge metal. 035-inch wire is standard for general purpose fabrication, it often delivers too much current for delicate work.
More About Mig welding thin metal settings
Looking at Mig welding thin metal settings from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Mig welding thin metal settings can make the topic easier to follow by connecting earlier points with a few simple takeaways.
