The term “weld pool” designates the molten puddle of metal liquified by the welding arc. It can be formed from the surface metal of the workpiece, filler metal introduced to the arc, or a combination of the two. In each case, the weld pool is subject to dynamics that are…
Serving as a cornerstone for the fabrication and construction of metal structures, welding requires precision, skill, and attention to detail to create strong and durable weld joints. One small incident while welding can cause massive rework and potentially fatal injuries. Fortunately, there are safety procedures and devices that are put…
Autogenous orbital GTAW, or gas tungsten arc welding, is a highly specialized process that uses an automated welding system to join two pieces of metal without the need for filler metal. The process offers a high level of control and is popular in industries that need the highest quality and…
In welding, precision and efficiency are key factors that influence the quality and durability of the output. Among the different welding techniques, welders prefer gas tungsten arc welding (GTAW) and plasma arc welding (GTAW-P or PAW) to ensure accuracy and control in the fusion process. The similarities between the two…
The welding of pipe and tube is one of the most challenging types of welding. The need to move an electrode around the entire circumference of a pipe or tube complicates manual welding, as the welder needs to shift positions multiple times to complete the weld. This makes it extremely…
Tungsten inclusion is a welding defect found in gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding. This welding process uses a non-consumable tungsten electrode to generate an arc—and a tungsten inclusion occurs when some of the material from this electrode is deposited into the molten…
Welding obviously involves quite a lot of heat, and for every stick, flux-core, MIG, or TIG, there is a corresponding arc welding heat-affected zone on either side of the metal. This is an area where the metal has experienced a change in its material properties due to the high temperatures…
The core of gas tungsten arc welding (GTAW) is obviously the tungsten. A great deal of attention is paid to the different tungsten electrode types. Even something as seemingly minor as the tungsten grind angle can have an outsized impact on the final weld. However, the torch which holds the…
The most common way of certifying welds and welders is destructive testing. Perform a weld to specific parameters, clamp it into a hydraulic press, and apply stress until something gives way. If the weld survives past the required stress point before breaking, then it, the materials, the way it was…
Tungsten inert gas (TIG) welding, otherwise known as gas tungsten arc welding (GTAW), is known for producing a clean and precise weld, and tungsten electrodes play a central role in it. From providing excellent thermal conductivity to ensuring precision arc control, using tungsten electrodes adds to the various benefits of…
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