TIPS FOR ARC WELDING | ARC TIG WELDING |

Posted on | November 16, 2010 | No Comments

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Tips for Arc Welding

Arc welding can be a tricky and difficult task. Arc welding refers to welding that uses a live current of electricity to produce welds. The electricity streams in an arc from an electrode down to a work piece. GMAW welding (gas metal arc welding, or MIG welding) and GTAW welding (gas tungsten arc welding, or TIG welding) are two different types of arc welding. Most methods of welding will use shielding gases to improve weld quality. Aside from using proper shielding gases, there are a number of other steps that welders can take to improve their welding technique.

Shielding Gas

1. Employing the proper shielding gas is a critical step in producing high-quality welds. Shielding gases stream down onto a work piece, surrounding the arc of electricity as it is drawn down to the work piece. This process greatly increases stability of the arc, making precision welding much easier. Shielding gases allow for the creation of smoother welds and help prevent contaminates from compromising welds.

2. Argon gas is the most widely used shielding gas in most methods of welding. A shielding gas consisting of argon and carbon dioxide is ideal for working on thicker-gauged steel. While working on thinner steel, a combination of 75 percent argon, 25 percent carbon dioxide shielding gas is ideal. Argon with helium shielding gases work well while welding on aluminium. An argon, helium and carbon dioxide combination will work well on stainless steel.

Proper Ground

1. Having a welding system properly grounded is a critical step in ensuring streams of electricity will be steady and go uninterrupted. An improperly grounded system can make it more difficult to provide a starting voltage to the welding system. While copper is one of the more efficient electric conductors, most modern-day grounding clamps are made out of plated steel. These steel grounding clamps have a small amount of copper at the contact point. Employing an all-copper grounding clamp makes it easier to create a starting voltage.

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