Using pyrotechnic metal to join two metal pieces together
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A thermite weld in progress
Exothermic welding, also known as exothermic bonding, thermite welding (TW),[1] and thermit welding,[1] is a welding process that employs molten metal to permanently join the conductors. The process employs an exothermic reaction of a thermite composition to heat the metal, and requires no external source of heat or current. The chemical reaction that produces the heat is an aluminothermic reaction between aluminium powder and a metal oxide.
^ abMessler, Robert (2004). Joining of materials and structures : from pragmatic process to enabling technology. Elsevier. p. 296. ISBN 978-0-7506-7757-8.
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