Features: *The process is absolutely safe therefore requires no special protection. *Requires the operator of no professional

Introduction:                                                                                            

Exothermic Welding is also called "thermit welding "or"aluminothermic welding". Exothermic is a chemical term used to describe a reaction that produces heat. For exothermic welding, it is the reaction of one metallic oxide such as copper oxide by another reductant metal, usually aluminum- yielding molten super-heated copper and aluminum oxide slag. The process of exothermic welding is a method of making electrical connections of copper to copper or copper to steel in which no outside source of heat or power is required. 

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.

Lgnited 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.

Process:                                                                                                     

Typical connections:                                                                               

exothermic welding clamp