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.
Benefits
A greater current capacity than the conductors
Lower electrical resistance than a mechanical joint
Will not corrode - lasting indefinitely
Lends itself to field work since it requires no external heat source
Time saving (entire process takes only a few seconds)
No special skills required, only minimal training
Superior to all known mechanical or pressure connectors
