What is weld purge?

Weld purge refers to the process of removing oxygen and other contaminants from the area surrounding a welding joint in order to prevent weld defects and ensure high-quality welds. This is typically achieved through the use of specialized equipment, such as purge chambers or gas purging systems, which allow for the controlled introduction of an inert gas (such as argon) into the welding area. By replacing the surrounding air with an inert gas, welders are able to create an oxygen-free environment that prevents the formation of harmful compounds, such as oxides, which can weaken the weld and cause defects. This is particularly important in materials that are prone to oxidation, such as stainless steel or titanium. The importance of weld purge cannot be overstated, as it is essential in maintaining the integrity of welded components in a variety of industries, including aerospace, automotive, and medical device manufacturing.