Ceramic Weld Backing Evaluation
Abstract
Representative ceramic weld backing systems were evaluated with representative FCAW and SAW processes to determine their efficacy to produce second side weld contours not requiring subsequent back welding or preparation for inspection. Weldments were prepared and evaluated for soundness, toughness, bead shape, ceramic attaching methods and ceramic neutrality. Significant weldment soundness problems were identified for certain FCPW processes in certain positions. Changes in welding technique appear promising for control of these problems (though at some expense in bead shape) but further development in certain instances is required. Relatively minor bead shape problems were identified and corrected for FCAW. More significant bead shape problems were identified for submerged arc particularly in tandem applications. No other problems of potential significance were identified. Promising joint designs, parameters and techniques were identified for welding over ceramic backing. Recommendations for future development are made.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1980
- Accession Number
- ADA452172
Entities
People
- D. J. St. Pierre
- R. E. Cantrell