In Thermit welding, aluminium and iron
oxide are in ratio of :
1 : 3
1 : 2
1 : 1
2 : 1
1 : 3
The thermit mixture consist of aluminum an iron oxide in the ratio of about 1:3 by weight.
Reaction process in thermit welding :
Fe
(iron)– used for filler rod
Al2o3(Aluminum oxide)– used as slage
3 MJ/Mole (heat)– used for the melting of the parent metal
Hence,
the correct option is (A).
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