The welding clamp is used in conjunction with the heat welding mold to securely hold the mold, preventing the metal from flowing out during the welding process.
The welding clamp is used in conjunction with the heat welding mold to securely hold the mold, preventing the metal from flowing out during the welding process. Additionally, the welding clamp is also used to grip, manipulate, and move the components of the welding mold (inserting and removing), helping to minimize risks for the operator.
– It can be used with most types of molds.
– It securely holds the mold.
– It is easy to grip and operate.
– It has high durability, heat resistance, and load-bearing capacity.
It is used in grounding systems for lightning protection.
What the thermal welding?
Thermal welding, also known as exothermic welding, is a method that uses an exothermic reaction in a welding mold to raise the temperature inside the mold to nearly 3000°C for welding materials such as copper, steel… It is commonly used for welding grounding rods, copper-clad steel rods, copper rods, iron rods with copper cables in lightning protection grounding systems, electrical safety grounding systems, or lightning rod connections. Thermal welding has a simple implementation method, provides strong welds, and is cost-effective. It is recommended for use in grounding systems by various international technical standards such as IEEC, IEC, NEC, ASME…
Thermal welding is a molecular-type welding method that utilizes the heat generated by an exothermic reaction of aluminum to melt the metal in a closed, heat-resistant mold. The reaction occurs as follows:
3CuO + 2Al -> 3Cu + Al2O3 + 2537°C
At this temperature, common metals such as iron, copper, aluminum, etc., all melt and blend together into a single mass, which is why it is called molecular welding. This type of welding allows for the joining of different types of metals without the requirement of the same material. Furthermore, due to its molecular nature, these welds have excellent electrical conductivity, making them highly effective for grounding systems.
- The weld provides good lightning conduction and does not increase resistance over time.
- The welding powder is highly flammable, allowing for quick and safe usage.
- The bond is permanent and has no junction points.
- It can be connected in any configuration (T-shape, U-shape, parallel, etc.).
- The weld is not susceptible to corrosion, oxidation, and remains aesthetically pleasing and durable.
- It saves costs for users. The process of thermal welding is simple and convenient. Prior to the construction, only the welding mold and appropriate welding powder for the grounding connections need to be prepared. No complex power source or wiring is required; only a flame is needed to ignite the welding powder, allowing for immediate thermal welding. The technicians performing the welding do not require highly advanced skills; they only need to use standardized and accurate welding equipment and molds to carry out the thermal welding process.