The correct MIG welding settings for various sizes of steel thickness in millimeters will depend on several factors, including the type of welding machine being used, the wire diameter, and the welding position. However, here are some general guidelines for selecting the appropriate amperage and voltage settings for MIG welding different steel thicknesses:
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1-2 mm thickness: For mild steel of this thickness, a voltage of 16-18 volts and an amperage of 100-140 amps are recommended.
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2-3 mm thickness: For mild steel of this thickness, a voltage of 18-20 volts and an amperage of 140-180 amps are recommended.
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3-6 mm thickness: For mild steel of this thickness, a voltage of 20-24 volts and an amperage of 180-220 amps are recommended.
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6-12 mm thickness: For mild steel of this thickness, a voltage of 24-28 volts and an amperage of 220-300 amps are recommended.
It's important to note that these are general guidelines, and the specific settings may vary depending on the welding machine, wire type and diameter, and other factors. It's always important to refer to the manufacturer's guidelines for the specific welding machine being used.
In MIG welding, the voltage setting determines the heat input, or how hot the weld puddle gets, while the amperage setting controls the amount of wire being deposited into the weld. In general, a higher voltage setting will result in a hotter weld, while a higher amperage setting will result in a larger weld bead.
The correct amperage and voltage settings are important for achieving a high-quality weld. If the settings are too low, the weld may be weak or incomplete. If the settings are too high, the weld may be too hot and may result in distortion or burn-through.
In summary, the correct MIG welding settings for various sizes of steel thickness in millimeters depend on several factors, including the welding machine, wire type and diameter, and welding position. The amperage and voltage settings are responsible for controlling the heat input and amount of wire being deposited, respectively. It's important to refer to the manufacturer's guidelines for the specific welding machine being used to ensure the correct settings are used for the specific application.