Underwater welding refers to the process of joining metals beneath the surface of water, such as in oceans, lakes, or other bodies of water. It is commonly used in marine construction, offshore oil and gas platforms, and repairing underwater structures.
There are two primary methods of underwater welding: wet welding and dry welding.
Wet Welding: In wet welding, the welder works directly in the water using electrodes designed for underwater use. This method is simpler and more commonly used for underwater repairs but is limited to shallower depths.
Dry Welding: Dry welding involves creating a sealed chamber or habitat around the welding area to keep it dry. Welders work in a hyperbaric environment within the chamber. This method allows for welding at greater depths and is used for more complex and critical welding tasks.
Underwater welding techniques are applied to weld marine structures that are either fully or partially submerged. This method is commonly used on ships, dams, oil rigs, pipelines, bridges, and other marine infrastructures. Additionally, underwater welding practices find applications in diverse areas, including nuclear power stations, rivers, canals, and more.
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