How to Arc Weld

Arc welding is a process of fusion used to join two metals. Intense heat from an electric arc formed between the work and an electrode produces a pool of molten metal along the joint. As the metal cools, it solidifies, fusing an extremely strong bond between the two pieces of metal.

Difficulty: Moderately Challenging

Instructions

1. Set up your arc-welding circuit. To complete the circuit, and to produce the necessary arc, you'll need to have an AC or DC welder as your power source. Connect this source to the work piece by way of the work cable and to the insulated electrode cable, which provides electrical contact with the welding electrode.

2. Remove rust, grease, paint and old welds from your work piece with a wire brush and acetone before beginning a new weld. Brush, wipe and repeat until you have a clean surface to work with.

3. Select the proper electrode for the job you're doing. You can simply use an electrode to carry the electrical current between it and the work. Alternately, you can select one with an outer coating of flux, which helps to create the arc while providing a protective shield to prevent gas and slag from contaminating the weld. The flux-coated electrode provides a better bead, and therefore a stronger weld.

Tips & Warnings

• Always wear suggested safety gear when welding. This includes leather gloves and apron, appropriate welding helmet and rubber soled shoes. Make sure that anyone within 20 feet of you also wears protective equipment when you're welding.
• Avoid welding when it's raining to prevent electrical shock. Keep your welding equipment dry.
• The welding arc produces a temperature of 6500 degrees Fahrenheit at the tip. Use extreme caution when welding to protect yourself and others around you.