Investigations on local shielding systems for underwater applications
- Technical Univ. of Clausthal (Germany)
The underwater application of welding techniques is steadily gaining importance in an increasing number of fields. High weld quality, economy, and flexibility are especially vital for such purposes. At present, only dry techniques ensure satisfaction of requirements on welds subject to very severe loads. However, the application of these methods is time-consuming and expensive because of the necessary chamber construction. Consequently, the development of welding in a wet environment has continued. Especially inert gas methods with additional water shielding are promising for the future. Despite numerous investigations, however, reliable information on the hydrodynamic behavior of these shielding systems is still lacking. This might be a major reason for the fact that these systems have hitherto not received much attention in practice, since malfunctions occasionally still occur during real applications. Hence, the present article is concerned with fundamental research and model considerations. Moreover, comparisons with investigations on real shielding systems are performed, and results on variations with nozzle and flow arrangements are discussed.
- OSTI ID:
- 433616
- Report Number(s):
- CONF-940409--; ISBN 1-880653-10-9
- Country of Publication:
- United States
- Language:
- English
Similar Records
Underwater wet welding of steel
Underwater plasma-MIG arc welding: Shielding technique and pressure reduction by a centrifugal pump