MULTIPASS, AUTOGENOUS ELECTRON BEAM WELDING

A method has been developed to make narrow, deep-penetrating electron beam welds without the problems associated with root spiking. The process uses the base metal for filler metal, supplementing it with a boss on the weld joint, which is dimensioned to suit the particular weld. The weld boss is machined subsequent to welding. This development was the result of extensive work to minimise the problems of variation in penetration, root spiking and cold shuts, which can occur in single-pass electron beam welds. Weld joint geometries and welding procedures are detailed for partial and full penetration welds. These include welds in uranium of 0.335in (8.5mm) (8 passes) to 0.830in (21.1mm) (22 passes) and 0.310in (7.9mm) (3 passes) aluminium alloy 5083. For the work in aluminium alloy 5083, multipass autogenous electron beam welds are compared with gas metal arc welds and wire-fed electron beam welds. The areas of comparison include part distortion, porosity, depletion of magnesium, and mechanical properties.

• Supplemental Notes:
  • Welding J., 67 (1988), p. 187s (Sept.) [9 pp., 14 ref., 8 tab., 8 fig., 14 phot.]
• Authors:
  • Murphy, J L
  • Mustaleski, T M
  • Watson, L C
• Publication Date: 1988

Language

• English

Subject/Index Terms

• TRT Terms: Electron beam welding
• Subject Areas: Construction; Marine Transportation;

Filing Info

• Accession Number: 00694205
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM