Introduction to Explosive Welding

Amit Joshi

(B.E Mechanical, A.M.I.Prod.E)

Dept. of Metallurgical Engineering & Material Science,

Indian Institute of Technology - Bomby.

Introduction

Explosive welding
is a solid state welding process, which uses a controlled explosive detonation
to force two metals together at high pressure. The resultant composite system
is joined with a durable, metallurgical bond.

Explosive welding under high velocity
impact was probably first recognized by Garl in 1944. Explosive welding was
first recognized as a possibility in 1957 in the United
States when it was observed by Philipchuck
that metal sheets being explosively formed occasionally stuck to the metal
dies. Between that and now the process has been developed fully with large
applications in the manufacturing industry.

It has been found to be possible
to weld together combinations of metals, which are impossible, by other means.

The Process

This is a solid state joining process.
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According to the Vatican translation, the new paragraph 2267, “The death penalty,” now reads:

2267. Recourse to the death penalty on the part of legitimate authority, following a fair trial, was long considered an appropriate response to the gravity of certain crimes and an acceptable, albeit extreme, means of safeguarding the common good.

Today, however, there is an increasing awareness that the dignity of the person is not lost even after the commission of very serious crimes. In addition, a new understanding has emerged of the significance of penal sanctions imposed by the state. Lastly, more effective systems of detention have been developed, which ensure the due protection of citizens but, at the same