Regis Geisler
Articles by Regis Geisler
Push or Drag Angle with GMAW to Reduce Porosity – The Answer Is: It Depends
Lesson Learned: This analysis shows how one must be careful of getting locked into welding a certain way only because that’s the way it has always been done.
Solid Wire vs. Metal Core Wire, Revisited
In terms of welding costs, the choice between solid wire and metal core wire is not a simple one. Here’s why it all boils down to perspective.
Choosing a Butt Weld Joint Preparation
Which joint configurations provide the best economy? Here is an examination of the “pro-versus-con” arguments that must be weighed out in order to make an informed decision when choosing between U-groove and V-groove joint preparations and small bevel versus large bevel configurations.
Using 95/5 Shielding Gas During Low-Alloy Filler Rod Conformance Testing
In filler metal qualification tests where argon/oxygen shielding gas mixtures are used, Regis Geisler of Lincoln Electric explains why and how to leave some wiggle room in contracts to make adjustments as the situation warrants, instead of stipulating how welding will take place with a particular blend.
Focus on Proper Weld Size When Developing WPS Parameter Ranges
The fabricator and the erector must determine the most appropriate range of travel speeds for a particular application, rather than relying blindly on published product certs. However, following the methodology presented here by Regis Geisler of Lincoln Electric provides another possible blueprint on how this may be achieved.
How to Determine the Diffusible Hydrogen of Mild Steel Weld Filler Material
To avoid hydrogen-induced cracking, the hydrogen level in the welding filler material must be restricted to a certain maximum level. What exactly is the method for measuring the hydrogen content of a carbon steel weld filler material?
Requesting the Appropriate Level of Weld Testing for Special Order Filler Materials
Welding filler metal certification, documentation and accountability is frequently a step of the nuclear pressure vessel fabrication and military shipbuilding process. Regis Geisler of Lincoln Electric explains how to select the appropriate weld testing requirements to verify quality and attest that the products being supplied meet the constituents of the required specification.
Trail Gas-Shielding Save the Day… Again
Trail gas shielding devices have been shown time-and-again to have a dramatic effect on weld surface mottling. Here’s why.
What Is Commercial Grade Dedication and When is it Required for Nuclear Grade Welding Consumables?
Regis Geisler of Lincoln Electric explains how a supplier of nuclear-grade welding consumables can know whether or not they are in compliance with Title 10 and the requirements of the Nuclear Regulatory Commission.
Fillet Welds Using Stainless Steel Shielded Metal Arc Electrodes
In developing this welding procedure, here’s how to look for the “keyhole” that is visible behind the arc and making sure that arc does not ride on top of the puddle.
Estimating Total Welding Costs
Keeping your welding costs low goes far beyond buying the lowest priced wire available. You must analyze how welding processes that increase deposition rate and increase productivity will reduce the largest component of welding costs – your labor and overhead. Here’s how to do it.
Never Underestimate the Importance of Weld Bead Shape
Many weld failures occur due to lack of fusion when proper attention is not given to this characteristic. Regis Geisler of Lincoln Electric shares a remedy that may help fabricators avoid such problems.
Modified “5-55” Vertical-Up Welding Technique Improves Bead Quality and Weld Shape
When welding with an E71T-8 electrode in structural steel fabrication and erection, here is a technique that combines the two competing priorities of being able to pause long enough at the toes to flatten out the weld and bring slag to the surface, and having a small enough weave angle in order to avoid “perforations” and inconsistent leg size.
Relevance of Drop-Weight Testing in the Determination of the Reference Nil-Ductility Temperature
The drop-weight test has become commonplace in the testing of ferritic steel and weld metal used in several types of components in nuclear reactor pressure vessels. But Regis Geisler of Lincoln Electric questions whether this method is now obsolete and whether there is another predictive tool that should be used to determine the RTNDT of weld deposits.
TIPS FOR OVERLAYING JOURNALS AND CASTER ROLLS
Although the ultimate hardfacing deposit selected will vary based on the intended application, Regis Geisler of Lincoln Electric explains the welding and fabrication techniques to follow for rebuilding caster rolls, crankshafts, roll pins, extrusion rolls, crusher rolls, or other types of journals made of low alloy steel.
CORROSION OF PIPE WELDS MADE WITH METAL-CORE WIRE
Regis Geisler of Lincoln Electric analyzes the recent occurrence of this situation at a fabrication site, then recommends some remedies for mitigating the effects.
LESSONS LEARNED IN GTAW QUALIFICATION TESTING
To emphasize the importance of the effects of welding heat input and cooling rate on weld mechanical properties, Regis Geisler of Lincoln Electric analyzes another application where a one percent nickel electrode was successfully implemented in a welding application.
USING 1 PERCENT NICKEL ELECTRODES FOR HIGHLY RESTRAINED WELDS, HIGHLY HARDENABLE STEELS
Circumstances exist in which the selection of low-hydrogen, mild steel electrodes such as ER70S-6 solid wire or E7018 stick electrode is not enough to prevent weld cracking. Regis Geisler of Lincoln Electric explores the reasons for this and offer possible alternatives to these filler materials.
FABRICATING RECOMMENDATIONS IN THE WELDING OF TWO-SIDED GROOVE WELDS
Regis Geisler of Lincoln Electric explores some real-world considerations and practices to improve quality and productivity during the welding of two-sided butt joints that are frequently used in pressure vessels and wind tower construction.
