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Metallurgical Engineering Welding Metallurgy Difficulty: Medium

Match the welding processes in Group 1 with the principal mechanism in Group 2 . Group 1 Group 2 P. Seam welding 1. Ionisation and plasma Q. Explosive welding 2. Exothermic reaction R. Gas welding 3. Interfacial deformation S. TIG welding 4. Interfacial resistance heating 5. Interfacial diffusion of atoms

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