The National Shipbuilding Research Program. 1992 Ship Production Symposium Proceedings. Paper No. 7C-1: Aluminum Steel Construction in a New 36M (120 Ft) Patrol Boat
2006
Moore, Scott S. | Banker, John G.
Construction of the U.S. Coast Guard Cutter Leopold, the lead ship of the 36 m (120 ft) Heritage Class, is discussed. A new Structural Critical Aluminum-Steel Transition (SCAST) product, Duratemp II" was selected for the welding transitions between the aluminum deck house and steel deck. The explosion bonded material's higher strength and toughness permitted use of lighter, narrower transition joints (1 cm (0.375") wide x 2 cm (0.75") thick) than are permissible with traditional materials. The unique heat resistance of the material permitted cutting and welding of the small section joints without overheating. The need for corner butt joints was reduced due to the product's reliable bendability. Welding procedures and Quality Assurance procedures are discussed in detail. fabricability, and proven corrosion resistance. This was the first shipboard installation to use this material. The USCG, in cooperation with the manufacturer, chose a 1 cm (0.375") wide x 2 cm (0.75") thick transition joint for use in joining the pilot and deck-house to the steel deck. Fabrication of traditional Aluminum/Steel transition joint materials using bars of this small of a cross-section is generally considered unreliable. Traditional aluminum/steel transition joint products can be significantly degraded if the bond zone is heated above 260 degrees C (500 degrees F) during welding.
Afficher plus [+] Moins [-]Presented at the Ship Production Symposium Proceedings (1992) Held 2-4 Sep 1992 in New Orleans, LA.
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