Explosive Forming High Strength Steel (HY-130) Large Hemispherical Heads.
Final rept. Jun 70-Jun 74,
NAVAL ORDNANCE STATION LOUISVILLE KY
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This report describes a program to explosively form large high strength steel HY-130 hemispherical heads from welded preforms. Since the finished product ranged from 20 to 50 feet in diameter, subscale preform models were used to determine the parameters necessary to form the larger sized heads. Early in the program it was determined that the greatest problem area lies in weld seam formability. Additional investigation was proposed and funded to conduct testing along these lines two subscale hemi-head preforms were manufactured and explosively formed. The weld seam failures precluded continuance along the welded preform concept. Also reported is the in-depth study of pre- and post-forming properties of the HY-130 steel alloy. Author
- Fabrication Metallurgy