Dry welding and wet welding

By Mr. Rohitkumar G. Rathod

© www.EMechatronix.com



Underwater Welding :

DRY WELDING WET WELDING


Options:




Electrode design

These copper coated carbon/graphite electrodes are especially made for the Arcwater process. Arcwater

electrodes that are

Packing

Creating Habitat, cover over the weld spot.

Two Possibilities…


Wet Welding


Wet Welding




Cheapest and Fastest method.

Tensile strength is high.

Ease of access the weld spot.

No habitat, no construction, no waste of time.

Advantages of Wet Welding


Rapid quenching decreases impact strength, Ductility.

Hydrogen enbrittlement.

Poor visibility in water.

Higher energy density of Hydrogen. Higher efficiency

Disadvantages of Wet Welding


Dry Welding/ Hyperbaric Welding



Dry Welding/ Hyperbaric Welding




Welder/Diver Safety.

Good quality welds.

Surface monitoring.

Nondestructive testing.

Advantages of Dry Welding


Higher cost of process, training, etc.

Large qty of costly and complex equipments.

More deep, More energy requirement.

Cant weld if weld spot is at unreachable place.

Disadvantages of Dry Welding


Technology

Dry welding and wet welding