Shipbuilding (Page 2)

Shipyards typically use submerged arc welding (SAW), flux cored arc welding (FCAW) or gas metal arc welding (GMAW) to fabricate butt joints in thick steel plate. But there are drawbacks to these traditional welding methods, such as the necessity for weld joint preparation. In addition, multiple welds are often required to fill the joint. Now,...

EWI has recently developed a new method for joining thick steel plate by combining the hybrid laser arc welding and the submerged arc welding processes. The new approach is an improvement over earlier methods on many fronts, and further research is planned to test different materials and thicknesses. This project is discussed in Co-processing of...

Combining aluminum and steel construction in vehicle manufacturing can offer great lightweighting and strength advantages. The formation of brittle intermetallic compounds (IMCs) in the joints between the materials, however, are known to impair performance.  Prediction of such intermetallic formation is often difficult to assess due to the rapid thermal cycles involved. A new technique for...