Bill Giese

Contributing Writer
Bernard
449 W. Corning Road
Beecher, IL 60401
Rotary bevel head

Troubleshooting welding conductivity

June 17, 2008

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When MIG welding, are you experiencing an erratic, sputtering arc; a gradual need to increase voltage at the power source; discoloration of copper cable strands or the liner; increased contact tip burnbacks; or inconsistent weld appearance? If so, your problem could be poor conductivity caused by electrical resistance.

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GMAW

Tips for troubleshooting GMAW consumables

June 17, 2008

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Being able to quickly and accurately identify the source of GMAW consumable problems will save you both money and frustration.

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GMAW welder

The tipping point

September 11, 2007

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Incorrect contact tip recess can cause excessive spatter, burn-through and warping, insufficient penetration, and porosity. Welders who become familiar with correct tip recess can avoid these problems as well as unnecessary equipment upgrades yet still improve GMAW quality.

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Bernard Welder Image

Great welds need the right gas

August 22, 2007

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Using an inappropriate gas mixture and consumables for a particular GMAW application can cause porosity and excessive spatter, factors that diminish weld quality. Which gases work best with which materials? Why is nozzle selection important? This article addresses these and other questions about GMAW gas and consumables.

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GMAW guns: More than a commodity

September 12, 2006

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Many welders think of GMAW guns as just a commodity. However, all of the parts in a GMAW gun have a direct impact on the time it takes to make a weld and its quality.

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Elements of success:

January 10, 2006

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Torches, cables, and cooling are three integral components in gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW) equipment, and two cooling methods – air and water – are used in their cooling systems. Although GMAW and GTAW are different processes, the advantages and disadvantages of water- and air-cooled systems are the same. For that reason, you should consider similar factors when choosing a GMAW or GTAW system.

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How to choose the consumables you use - Part I

June 14, 2005

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Editor's Note: This article, which covers consumables for gas metal arc welding, is the first installment of a two-part article. Part II discusses gas tungsten arc welding consumables.

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