Dry welding and wet welding
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The document discusses two methods for underwater welding: wet welding and dry welding. Wet welding involves welding directly in water and has advantages such as being the cheapest and fastest method, but disadvantages such as poor visibility and risk of hydrogen embrittlement. Dry welding involves welding in a pressurized chamber and has advantages like better weld quality and worker safety, but higher costs associated with the complex equipment required. The document compares the pros and cons of each welding method.
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Dry welding and wet welding
- 1. By Mr. Rohitkumar G. Rathod © www.EMechatronix.com
- 4. Underwater Welding : DRY WELDING WET WELDING © www.EMechatronix.com
- 8. Two Possibilities… Electrode design These copper coated Packing carbon/graphite electrodes Creating Habitat, cover over are especially made for the the weld spot. Arcwater process. Arcwater electrodes that are © www.EMechatronix.com
- 13. Advantages of Wet Welding Cheapest and Fastest method. Tensile strength is high. Ease of access the weld spot. No habitat, no construction, no waste of time. © www.EMechatronix.com
- 14. Disadvantages of Wet Welding Rapid quenching decreases impact strength, Ductility. Hydrogen enbrittlement. Poor visibility in water. Higher energy density of Hydrogen. Higher efficiency © www.EMechatronix.com
- 15. Dry Welding/ Hyperbaric Welding © www.EMechatronix.com
- 17. Dry Welding/ Hyperbaric Welding © www.EMechatronix.com
- 20. Advantages of Dry Welding Welder/Diver Safety. Good quality welds. Surface monitoring. Nondestructive testing. © www.EMechatronix.com
- 21. Disadvantages 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. © www.EMechatronix.com