An exothermic reaction is a chemical or physical reaction that releases heat. It gives net energy to its surroundings. That is, the energy needed to initiate the reaction is less than the energy released.
Exothermic Welding called often aluminothermic welding is a welding process for permanently joining materials that employs the exothermic reaction. This method was invented in 20 th century for connecting grounding conductors on molecular level.
The main components used in the exothermic welding process are cooper oxide and aluminum.
The reaction takes place in a graphite mold in which the elements to be welded have previously been introduced and at the required load.
This results in a durable, compact and homogeneous bonding between the elements.
The key advantages of the process are:
Connections are unaffected by corrosive products to same degree as copper.
The conductivity of the welding connection is equal to or greater than two joined conductors.
The connection is resistant to overloads or surges.
No maintenance of the connection is required.
Connections done once for entire lifetime of the installation.