ANALYSIS OF BONDING MECHANISM AND CHARACTERSTICS OF ULTRASONIC WELDING SYSTEM

Abstract

In ultrasonic welding, high frequency vibrations are combined with pressure to join two materials together quickly and securely. Ultrasonic welding can join dissimilar metals in a split second , ultrasonic welding eases problematic assembly and this cost effective technique may be key to mass producing fuel efficient. In this work effect of various parameters on weld strength have been studied .welding of .5 mm aluminum plates were successfully welded by 20 khz ultrasonic welding system . One dimensional vibration system for ultrasonic lap spot welding of metal plate of aluminum have studied .The relationships between weld strength and the variables of weld energy, duration of weld cycle, have studied Experiment on S.E.M.(scanning electro micrograph ) was carried out to determine the mechanism of aluminum- aluminum and aluminum –copper plate bonding. These experiment, including effect of amplitude and pattern of bond formation. Key words: Ultrasonic welding, SEM, 20 khz weld...