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Exothermic Welding

Safety Equipment & General Tool Kit

The Earthcor exothermic welding process - simple & effective


Exothermic welding makes strong and low resistant electrical connections of various metals like; copper to copper, copper to steel and steel to steel. Without an external heat or power source.


The weld metal powder, consisting of powdered aluminium and copper oxide. The powder is poured into a graphite mould (as shown right) followed by the ignition powder. Nothing more than a spark is required to ignite the powder. The heat from the resultant exothermic reaction produces moulten copper and aluminium oxide slag. In a matter of seconds the molten copper melts the metal disc and flows down the tap hole and over the conductors in the weld chamber, melting them and welding them into a solid mass.



NB. A number of codes on this page have changed. Please consult the latest catalogue for the new codes.

Cable to Cable / Rod to Rod

Flat Copper Bar to Earth Rod

Cable or Rod to Earth Rod

Copper Bar to Bar Connections

Copper Bar to Cable or Rod Connection

Re-Bar Connections

Studs to Steel - Vertical or Horizontal

Cable or Rod to Steel - Vertical or Horizontal

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