The principle of high-frequency welding copper pipe is to use the heat generated by high-frequency current passing between the copper pipe and the welding material to heat and melt the welding material, thereby achieving the purpose of welding. The specific principles are as follows:
1. High-frequency current generation: convert low-frequency alternating current into high-frequency current through a transformer. High-frequency currents typically range in frequency from a few kilohertz to tens of megahertz.
2. Induction heating: high-frequency current passes through the cooling coil to generate an electromagnetic field. When the copper pipe enters the electromagnetic field, eddy currents will be generated by electromagnetic induction.
3. Eddy current heating: Eddy current will generate a large amount of heat inside the copper tube, causing the copper tube to heat up.
4. Melting of welding materials: During the heating process, the welding materials will also be heated and melted. The welding material is usually auxiliary welding rods at both ends of the copper pipe.
5. Welding: When the copper pipe and the welding material have reached a molten state, the welding material will be completely fused with the copper pipe to form a strong weld.
High-frequency welding copper pipes are fast and efficient, and are suitable for production occasions that require high welding speeds, such as pipeline manufacturing, HVAC industry, etc.