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Explosive Welding

Explosive Welding -
History
During the First World War it was observed that fragments of the steel shells of bombs occasionally stuck to metallic objects in the vicinity of the explosion. This, had it been realized, was an example of explosive welding.
Explosive welding was perhaps first noted by Carl in 1944. It is nearly 24 years since Pearson in the USA probably first recognised the potential usefulness of explosive welding, though Philipchuck is credited with its first public recognition as a potential industrial process in 1957.
Since then, considerable work has been reported in many countries, notably the USA, the USSR, West Germany, Czechoslovakia, Japan and the UK.

Definition
Explosive welding is a solid phase (state) welding process wherein coalescence is effected by high velocity movement produced by a controlled detonation.

Basically, explosive welding involves a high velocity (oblique) impact between (flyer) a plate propelled by an explosive charge and a (second) stationary plate when two plates are to be explosively welded.

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