Thermite Welding On A Swedish Railroad

Posted on Jul 29 2013 - 7:35am by gchoe

Thermite is a pyrotechnic composition of metal powder, as the fuel, and metal oxide.  It takes a bit of heat to set it off, but once it gets going it undergoes an exothermic oxidation-reduction reaction.  Long story short, it gets hot enough to weld railroad ties together.

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