Friction welding
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Friction welding is a solid-state welding and bonding process that generates heat through mechanical friction between workpieces in relative motion to one another. The process is used with the additio
Historical photo of a double spindle machine for rotary friction welding
Rotary friction welding
Friction stir welding
Picture shows weld zones in friction welding.
Forge welding
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Forge welding, also called fire welding, is a solid-state welding process that joins two pieces of metal by heating them to a high temperature and then hammering them together. It may also consist of
Friction welding
…addition of a lateral force called "upset" to plastically displace and fuse the materials. Friction welding is a solid-state welding technique similar to forge welding. Instead of a fusion welding process, friction welding is used with metals and thermoplastics in a wide variety of aviation and automotive applications…
Sponge iron traditionally used to forge the Japanese blade nihonto.
A mechanized trip hammer.