All posts by Alicia Garcia

The Hopefuls: CWI Exam First Timers and the Updated Pre-Seminar

This week’s blog is part 1 in a 3-part series covering how the updated CWI Pre-Seminar can benefit specific groups of people. Today we’ll focus on those we call “Hopefuls.” These are people who have decided to take the CWI exam for the first time. If you’re unfamiliar with the CWI Pre-Seminar, or aren’t up … Continue reading The Hopefuls: CWI Exam First Timers and the Updated Pre-Seminar

Selection and Properties of Shielding Gases Used for Welding

M.C. Balmforth (The Materials and Engineering Group, LLC) dives into some of the more technical aspects of shielding gas properties and selection for GTAW. In this presentation, Mr. Balmforth discusses a handful of important arc/plasma properties (thermal conductivity, electrical conductivity, and current), and clears up some common misconceptions regarding what variables determine heat transfer to … Continue reading Selection and Properties of Shielding Gases Used for Welding

The Role of Oxygen in Arc Stabilization of Aluminum GMA Welds

Jesse Martinez, on behalf of his colleagues (Dr. P. Burhardt, Dr. C.E. Cross, and A.N. Duffield) at Los Alamos National Laboratory, discusses the results of an experiment that explored the relationship between oxygen and welding arc stability. This experiment was conducted in response to issues the research team encountered with GMA welds on aluminum in … Continue reading The Role of Oxygen in Arc Stabilization of Aluminum GMA Welds

You Spoke, We Listened: Everything You Need to Know About the NEW CWI Pre-Seminar

If you’re reading this, it’s a safe bet that the American Welding Society’s Certified Welding Inspector (CWI) program has impacted your career in one way or another. As welders, your handiwork has been inspected, and (hopefully) accepted, by a CWI on countless occasions. Some of you may have been mentored, or even introduced to the … Continue reading You Spoke, We Listened: Everything You Need to Know About the NEW CWI Pre-Seminar

Challenges, Solutions, and Advancements in Automated Weld Grounding

Bob Bosworth (Elite Welding Solutions, Inc.) presents a comprehensive look at grounding for automated welding. Mr. Bosworth discusses electricity basics, the challenges associated with automated weld grounding, essentials for welding ground – deployment, and engineering and design-based best practices and solutions. The presentation also includes some recent technological advancements, and a Q&A session.

Stress Relaxation Cracking Testing and PWHT of Superalloys for Power Plant Construction

David C. Tung (The Ohio State University) presents his research on various superalloys (Super 304H, Inconel 740, Haynes 282, etc.) that are used in power plant construction. Because high-efficiency/low-emission power generation relies on the ability of these metals to withstand remarkably intense conditions, Mr. Tung’s lecture focuses specifically on Post-weld heat treatment and stress relaxation … Continue reading Stress Relaxation Cracking Testing and PWHT of Superalloys for Power Plant Construction