21-12-2012, 05:07 PM
Solid-State Welding Processes
Solid-State Welding Processes.pdf (Size: 1.09 MB / Downloads: 46)
Cold Welding
• Pressure is applied to the
workpieces through dies or
rolls
• Preferably both work pieces
should be ductile
• The work pieces should
cleaned thoroughly
• Can not join dissimilar metals
Ultrasonic Welding
• Surfaces of the two
components are
subjected to a static
forces and oscillating
shearing force
• Produces a strong,
solid-state bond
• Versatile and reliable
for joining metals
Inertia Friction Welding
• Modification of Friction Welding
• Energy is supplied by a fly wheel
• The parts are pressed together by a normal force
• As friction at the interface increases, the fly wheel slows down
• The weld is completed when the flywheel stops
Resistance Welding
• Developed in the early 1900’s
• A process in which the heat required for welding is produced
by means of electrical resistance across the two components
• RW does not requiring the following:
– Consumable electrodes
– Shield gases
– Flux