INFLUENCE OF VIBRATORY WELD CONDITIONING ON HARDNESS OF LAP WELDED JOINTS

Vibratory welding or Vibratory Stress Relieve welding is a promising technology and a new approach to welding in eliminating the draw backs encountered by the conventional welding like residual stress because of the electrical energy input which induces vibrations by altering the input parameters voltage, current, amplitude, frequency. It is also a better alternative to the heat treatments available to increase the strength, with no special tools and less cost during time of welding itself. The very advantages of vibratory welding are that it gives effective penetration of the molten metal to each corner of the joint that is chosen. The present experiment is intended to analyze the effects of hardness in the direction of longitudinal to the work piece on the lap welded mild steel plates of IS 2062 grade-B. The experimental study on vibratory welding process proposes to let the vibrations are introduced to alter the mechanical properties like hardness of parent metal with in vicinity of weld bead that is heat effected zone of the specimen.