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Exothermic welding introduction
During exthermic welding process operation, the reaction chamber and welding cavity temperature reached about 2500 °C and 1200 °C .The material of the mould is graphite. The life of each mold design on average of 50 times, but the correct use and maintenance would extend the mould's life. Previous empirical data, the correct use and maintenance of die life can be extended to 100 times.
Exothermic welding Feature
1.The operation is safe and there is no need for professional skill or special protection, so it is quite easy with equipped tools.
2.It's don't need other energy , convenient carrying, high operating efficiency.
3.The connector uses metallic copper of high purity which has strong resistance of corrosion.
4.The standard welding flux for grounding system
This is how it works
The Mold (1) features a Crucible (2), a Tap Hole (3) and a Weld Cavity (4).The Conductors (5) and (6) to be joined, are located in the Weld Cavity as shown, and the Mold is closed. A steel Retaining Disc (7)is located in the bottom of the crucible, to retain the Weld Powder (8) and Starting Power (9) which are poured in on the top.
The process of exothermic welding
Ignited with a spark gun, the starting powder sets off an exothermic reaction in the weld powder, reducing it to molten copper alloy. This instantaneously melts the retaining disc, and flows down the tap hole, to the weld cavity, where it partially melts the conductors, before cooling to leave a fusion weld of great mechanical and electrical integrity.
APPLICATIONS:
The LED exothermic welding system is used for in making electrical connections of copper to copper, copper to steel or copper to cast iron or copper to brass/bronze for grounding and cathodic applications.
CAD graphite welding mold