AN EXPERIMENTAL INVESTIGATION ON THE EFFECT OF H D RATIO ON DYNAMIC FORM - CLADDING OF DOMES/

Explosive 'form-cladding' is a solid state welding process, accomplish ed alongwith the plastic deformation of two sheet metals in a single d etonation of a chemical explosive. The advantageous features include ( i) the significant decrease in the total cycle time (ii) the 'form-cla dding' of dissimilar metals (iii) the 'form-cladding' of heat treated and cold worked metals together, without changes in their mechanical p roperties (iv) the absence of 'heat affected zones' in the resultant ' form-clads'. Though the influencing parameters of explosive forming an d explosive cladding significantly affect explosive 'form-cladding', t he influence of h/D (depth of the die/Diameter of the die) ratio is un expIored. The effect of h/D ratio on the form-clads' is reported. The energy released by a nitroglycerine explosive, with 2500 m/s detonatio n velocity, was utilized to perform contact, open air 'form-cladding' explosions.