An Economic and Technical Study on the Feasibility of Using Advanced Joining Techniques in Constructing Critical Naval Marine Structures

摘要

A design analysis of a submarine's pressure hull components, fabricated from HY-130 steel, is performed in order to determine the welding requirements for fabrication. The amount of welding required is expressed in both linear feet and weight of weld metal deposited. Data on experimental welding of HY-130 is presented. The experiments consisted of single and double pass laser welding of restrained butt welds in one inch thick plates. Penetration capabilities obtainable with 12 KW of laser beam power were determined. Temperature distributions, longitudinal strains, and transverse strains experienced during laser welding of the HY-130 plates are presented in graphical and tabular form. An economic analysis, comparing shielded metal arc, gas metal arc, laser, and electron beam welding processes, for fabricating the HY-130 pressure hull is performed. The economic factors considered were labor and overhead costs, filler metal costs, sheilding gas costs, and electrical power consumption. (Author)