Application Engineer
Rob Koltz
ESAB Welding & Cutting Products
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- From The Welder
Improving results in flat-position submerged arc welding
The Consumables Corner team helps a shop that’s struggling with submerged arc welding quality when welding in the flat position.
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- From The Welder
Selecting shielding gas for GMAW and FCAW
The Consumables Corner team reminds readers of some basic principles when choosing a shielding gas for GMAW and FCAW applications.
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- From The Welder
Weld cracking when joining stainless and carbon steel
The Consumables Corner duo address a question regarding the discovery of weld cracking in horizontal fillet welds—something that wasn’t happening in flat groove welds.
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- From The Welder
Consumables Corner: Roadmap to success for a welding supervisor
The Certified Welding Supervisor certification and material will help welders learn more about deposition rates, efficiencies, and output.
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- From The Welder
Consumables Corner: Troubleshooting lack of fusion and porosity in submerged arc welding applications
The Consumables Corner duo address a reader’s struggles with lack of fusion and porosity on complete joint penetration welds, a common issue with submerged arc welding.
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- From The Welder
Understanding the relationship between deposition rate, deposition efficiency, and production output
The Consumables Corner duo clarify deposition rate, deposition efficiency, and production output, as well as provide some real-world examples of the terms.
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- From The Welder
Diagnosing porosity issues in vertical-up gas metal arc welding-pulse (GMAW-P)
The Consumables Corner team addresses a shop’s porosity issues in vertical-up welding using gas metal arc welding-pulse.
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- From The Welder
Consumables Corner: Preheat and interpass temperature defined, Part II
In Part II, the Consumables Corner duo continue the discussion on preheat and interpass temperature—specifically, the reasoning for preheat and interpass control and their effects.
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- From The Welder
Consumables Corner: Preheat and interpass temperatures defined in welding, Part I
Consumables Corner columnists David Meyer and Rob Koltz define preheat and interpass temperatures and explain the confusion surrounding how and when to measure the two.
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- From The Welder
Consumables Corner: Welding process and fillet size limits
The Consumables Corner duo discuss what to consider with large welds, most notably the number of passes required.
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- From The Welder
Consumables Corner: Why a shop using GMAW with C25 shielding gas experienced porosity
A foreman at a metal fabrication and welding shop wonders why using a GMAW filler metal with C25 shielding gas led to porosity.
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- From The Welder
Consumables Corner: The secret behind those preset weld parameters on your power source
Consumables Corner columnist Rob Koltz and Dave Meyer explain what variables matter in setting weld parameters and how equipment manufacturers determine preset parameters for their power sources.
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- From The Welder
Consumables Corner: Welding duplex stainless steels
Consumables Corner columnists Rob Koltz and Dave Meyer discuss duplex stainless steel and shed light on what to consider when welding them.
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- From The Welder
Consumables Corner: Why are welders experiencing amperage variation on machines doing the same work?
The Consumables Corner team explains why the same welding parameters sometimes result in different amperages during wire feed welding processes.
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- From The Welder
Consumables Corner: Why defects happen with one-sided submerged arc welding
One-sided submerged arc welding is a unique process that has equally unique weld defects. Find out what variables make or break this process.
- Podcasting
In this episode of The Fabricator Podcast, Caleb Chamberlain, co-founder and CEO of OSH Cut, discusses his company’s...
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