Question

write a short note on thermite process

Answer 1

It is a main process used for welding. It demonstrates about the exothermic reaction between Aluminium and Iron (ll) oxide. This reaction is also known as Goldschmidt process. This reaction is often used to join railway tracks.

Fe2O3 + 2 Al → 2 Fe + Al2O3

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Answer 2

Thermite process is very useful for the welding of broken metal parts. When Aluminum powder reacts with iron oxide or chromium oxide, a large amount of heat is released and about a temperature of 3500oC is attained which is enough to weld broken metallic parts.