ESTABLISH MANUFACTURING METHODS TO UTILIZE EXPLOSIVES AS HIGH ENERGY SOURCE TO SPOT WELD METALS.
Abstract
The formation of spot welds with explosive charges as high energy sources has been investigated, and methods of producing welds have been determined. Materials welded include aluminum alloy 2024-T3, Type 347 stainless steel, 17-7 precipitation hardening steel, titanium alloys 6Al-4V and 8Al-1 Mo-IV, in thicknesses ranging from 0.010-in. foil to 0.500-in. plate. Both similar metal and dissimilar metal welds have been successfully produced. Explosives for application to the welding process included RDX, PETN, HMX, TNT, Dynamite, Tetryl, Detasheet, and some specially formulated explosives. The most success was obtained with a specially formulated mixture of ammonium perchlorate and nitroguanidine, which was capable of detonating in diameters as small as 0.150 in. Conventional electrical resistance welds were fabricated for comparison. Tests showed that explosively formed welds were somewhat lower in strength than resistance welds, but the explosive welds in many cases showed superior axial and flexural fatigue lives. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1968
- Accession Number
- AD0838138
Entities
People
- Edward W. Larocca
Organizations
- Aerojet Rocketdyne Holdings