Understanding Wet Welding Methods
Underwater welding is conducted under elevated water pressures. It can be classified into two categories: wet welding and hyperbaric welding. Wet welding occurs in the water itself, while hyperbaric welding is conducted in a constructed pressure enclosure in a dry environment. Let us dive into how wet welding works (pun intended). Wet welding is a process carried out using a waterproof stick electrode, as there’s no physical barrier between the welding arc and water. The welding power supply is located on the surface level with connections made to the divers or welders using cables and hoses. Science of wet welding For underwater wet welding, alternating current (AC) isn’t used due to electrical safety standards and difficulty maintaining an arc underwater. For this reason, direct current (DC) is employed using positive polarity where electrolysis runs from the stinger, through the electrode, and onto the workpiece. Applications of wet welding Wet welding has some critical a...