How to Weld Steel With a MIG Welder
Steel is one of the most common metals for welding projects, given its durability and relatively low cost. Metal inert gas (MIG) welding is a process in which an electric current is passed through a consumable wire electrode into steel sheet metal to create sufficient heat to weld the steel. MIG welding also requires the use of an inert gas, such as carbon-dioxide, to shield the weld from contamination by airborne contaminants that can weaken the welding joint.
Instructions
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Arrange the steel sheet metal in the configuration in which you want to weld it and clamp the pieces in place.
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Clean the steel of any rust, paint or dirt with the wire brush. This will prevent any foreign matter from weakening the weld.
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3
Load the spool of steel MIG wire into your MIG welding machine according to the manufacturer's instructions.
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Hold the MIG welding torch 1/8 inch from the steel plates and depress the MIG trigger to start the electric arc welding process.
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Move the welding torch in a slow circular motion to melt the sheet metal and fuse the plates together.
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Continue the welding process until you reach the edge of the metal plates.
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Allow the steel to completely cool before handling.
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Tips & Warnings
Always wear welder's gloves and a welder's mask while welding.
Do not weld near combustible materials.
Always weld in a well-ventilated area.
References
- Photo Credit Jupiterimages/Photos.com/Getty Images
