Rob Koltz

Application Engineer
ESAB Welding & Cutting Products
411 S. Ebenezer Rd.
Florence, South Carolina 29501
USA


Phone: 636-485-2253
www.esabna.com

Consumables Corner: Reducing weld cleanup in pulsed GMAW

June 20, 2014

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Q: Our company manufactures the main structures used to build fitness equipment. These structures are mild steel tubing of various shapes and sizes and in relatively thin material, typically 10 to 16 gauge. We are using 90 percent argon/10 percent CO2 shielding gas with a 0.035-in.-dia. ER70S-3...

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Consumables Corner: Eliminating porosity in submerged-arc welding

June 19, 2014

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Q: Our shop manufactures bridge and structural steel components. Most of the material is A36 or A572 and welded with E70X-X class electrodes using FCAW with 75 percent Ar/25 percent CO2 shielding gas (bottle-supplied) and SAW. We're having issues with porosity in our SAW process. We find that once...

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Consumables Corner: Examining the root cause of distortion

June 11, 2014

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Q: We manufacture hydraulic cylinders. Ever since we changed our shielding gas blend, we’ve noticed a higher level of distortion. Before the change we used a 95/5 blend, but now we use 92/8, which we have documented using a 0.045-in.-dia. filler metal. Would the 92/8 blend run hotter and cause...

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Consumables Corner: Defining current density

June 5, 2014

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Q: Our company manufactures cylindrical structures, including tanks and smokestacks made from A36 or A572 material. The material is burned to size on a plasma table and mechanically beveled. Process limitations cause gaps in the joints during fit-up. We use a 0.045-in.-dia. solid wire with a 75...

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