Tool and process for miniature explosive joining of tubes

Metal fusion bonding – Process – Using explosive energy

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Details

228 25, 228109, B23K 2008

Patent

active

047082801

ABSTRACT:
The invention is a tool and process to be used in explosive joining of tubes. The tool consists of an initiator 81, a tool form 82 and a ribbon explosive 25. The assembled tool 80 is a compact, storable and safe device suitable for explosive joining of small, lightweight tubes down to 0.20 inch in diameter. The invention is inserted into a tube 51 to be welded which tube has itself been inserted into either another tube 52 or a tube plate. A shim or standoff between the two surfaces to be welded is necessary. Initiation of the explosive inside the tube results in a high velocity, angular collision between the mating surfaces. This collision creates surface melts and collision bonding wherein electron-sharing linkups are formed.

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