The main factor of the welding effect of the copper-clad steel ground rod is the cleanliness of the mold and the object to be welded. If the surface of the object to be welded is covered with dust, grease, oxides (rust) or other attachments, it must be completely removed and cleaned before it can be welded. Otherwise, the electrical and mechanical properties of the solder joint will be severely affected. Impact. However, the grounding system using copper-clad steel ground rods and bare copper stranded wires cannot meet the requirements if the problem of excessive contact resistance at the connection points cannot be effectively solved.
The connection between the copper-steel alloy grounding rod and other grounding bodies in the grounding network adopts exothermic welding, which can effectively reduce the contact resistance value at the welding point. In the grounding project of the refining and refining project, a common grounding device is used in the production device. Through the above application examples, it can be proved that the new grounding method and exothermic welding technology can completely replace the traditional grounding method, which has great promotion and application value. After repeated research and demonstration, it was finally decided to adopt a grounding system with copper-clad steel as the ground electrode and bare copper stranded wires as the ground wire. The connection between the ground wire and the ground electrode is made by exothermic welding. The basic operation procedure of this new type of ground connection is very simple, that is, working ground, protective ground, lightning protection ground, and anti-static ground are connected to the computer ground at the same time to form a common grounding network, so the grounding resistance must be less than 1Ω.
If conventional galvanized flat steel and angle steel are used for construction, in order to meet the grounding resistance requirements, an increase in the number of grounding electrodes must be adopted. Copper-clad steel ground rods are widely used and can be adapted to soil conditions with different humidity, temperature and pH values. Quick installation and minimally invasive operation greatly improve construction efficiency.
The exothermic welding mold is carefully designed and manufactured by professionals according to the different connection methods of the conductor. Under normal use, each mold can be used 50-100 times repeatedly. Each connection point is beautiful and neat.