EXOTHERMIC WELDING: Apliweld®
The Apliweld® welding is based on the reduction of copper oxide by metallic aluminium through an exothermic reaction
The reaction reaches temperatures over 1000ºC thus achieving the fusion of the materials to be welded. The conductors are joined by the resulting product of the main reaction when it gets to the solid state. This reaction-fusion-solidification process takes just a few seconds.
The product is called Apliweld aluminothermic welding due to the chemical reaction but it is also known as exothermic welding because of its difference with other soldering processes, which are usually endothermic.
The reaction is produced by a starting reactant that provides enough energy to activate the welding reaction, which occurs quick and safely inside a graphite mould. The mould is specifically designed for each union, depending on the elements to be welded and the required joint type.
There are many advantages of using exothermic welding. The most important one being that the process produces not just a mechanical but a molecular joint between the conductors.
- Apliweld has a super ior electrical conductivity than the conductors themselves.
- Apliweld does not corrode oxide or degrade with time and is resistant to galvanic coupling.
- Apliweld is able to withstand repeated electrical discharges.
- Apliweld never increases its resistance.
- Apliweld has higher mechanical and squeezing resistance than the conductors themselves.
- Apliweld offers a permanent welding and a low resistance connection, essential for achieving longwearing and trustworthy results in earthings.
- Apliweld guarantees the most common connections not only between copper cables but also for welding tapes and metallic pieces made of brass, stainless steel, copper coated steel earth rods…
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Apliweld supplies the material needed to make 10 connections on each material box. Each box includes: - 10 packages of welding compound
- 10 packages of starting powder
- 10 Metallic disks.
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