Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2002.10a
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- Pages.355-360
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- 2002
ELECTROSLAG STRIP OVERLAY OF PIPE, FITTINGS, AND PRESSURE VESSELS
Abstract
ElectroSlag Strip Overlaying (ESSO) process has been around since 1970. ESSO process had limited acceptance due to a few problems associated with the use of this process in its very early stage. Limited knowledge and, most significantly, poor quality of the equipment and welding flux gave the ESSO process a bad name. However, this process is well accepted today and used in North America, Europe and Japan. The ESSO process provides low dilution overlays at high deposition rates, excellent and consistent deposit chemistry with excellent surface quality, and virtually no defects. Capitan has taken this process one step further through extensive research and development of the process itself as well as the equipment. The improvement brought to the process warranted the issuance in May 2000 of an US patent. This study demonstrates the feasibility of this process with immediate positive production results. The main achievements of this work are as follows:
Keywords
- ESSO - ElectroSlag Strip Overlay;
- SAWSO - Submerged Arc Weld Strip Overlay;
- SAWO - Submerged Arc Weld;
- Overlay;
- TDR - True Deposition Rate;
- Trailing Flux for ESSO