Earthing Components
Copper Bonded Earth Rods
Copper Bonded Pipes
Galvanized Earth Rods
Carbolite Earthing Compound
Carbomaxx Earthing Compound
Grounding Accessories
TopbasWeld
Exothermic Welding
TopbasWeld Exothermic Welding is a simple, cost efficient, self-contained process of forming high quality permanent electrical connections. This process requires no external power or heat source making it completely portable. It uses a high temperature reaction of powdered copper oxide and aluminum, within a mold, to form permanent connections. In this process connections are made by pouring superheated molten copper alloy on and around the conductors to be joined. The reaction takes place very rapidly, therefore the total amount of heat applied to the conductors or surfaces is considerably less than that of brazing or soldering.
This is important in applications such as welding to insulated cables or thin wall pipes which might react to high heat. The process use aluminum particles as reducing agent with copper oxide to produce the chemical composition. Exothermic welding is a bonding of high conductivity high copper content alloy and high corrosion resistance.
Welding Accessories
Mold Cleaning Brush
Cable Cleaning Brush
Flint Ignitor
Bus Bar Cleaning Brush
Mold Cleaners
Handle Clamps
Operation steps
TopbasWeld EXOTHERMIC WELDING
Locate the conductors (A)
to be joined in the weld cavity (B)
and close the mould (C).
Place the steel retaining disc in the
base of the crucible (D)
Pour in the weld powder (E)
followed by the starting powder (F).
Ignite starting powder with a spark gun.
The resulting exothermic reaction reduces the weld powder to molten copper alloy which melts the retaining disc and flows into the weld cavity where it partially melts the conductors (G)
The molten copper alloy cools to leave a fusion weld of great mechanical and electrical integrity.
