If you look at any of the structural welding codes you’ll notice that contact-tip-to-work-distance (CTTWD) is a variable which must be listed in welding procedure specifications (WPSs). However, it is not an essential variable, meaning that changes to CTTWD of any amount do not require requalification. This can seem puzzling to some, especially those […]
This question can be answered very quickly. Gas Metal Arc Welding (GMAW) and Submerged Arc Welding (SAW) can have 98-99% deposition efficiency. However, the question is a bit more complicated since when we talk about efficiency we don’t just care about deposition efficiency (how much of the electrode becomes weld metal). What we care about […]
GMAW (mig welding) uses shielding gas to protect the weld puddle from the atmosphere while in a molten state. This is general knowledge, but many in our industry believe this is the only function of the shielding gas. Shielding gases can affect welding in many different ways and an evaluation of your current choice of […]
The GMAW process is a commonly used arc welding process. As all other processes, it has its advantages and limitations. The gas metal arc welding process, most commonly known as MIG, is one of the most used joining processes in the world today. The process had its beginnings over 60 years ago, but it is […]
