Butt welding machine actually uses the resistance to generate heat when the workpiece is in contact with the mouth, thereby heating the workpiece and melting the metal surface, and the weld is formed under the condition that the solid phase metal of the workpiece is plastically degenerated Grain, weld structure, and composition are close to the base metal, so it is relatively easy to obtain equal-strength isoplastic welded joints. In the process of flashing, it has the self-protection function of exhausting air and reducing metal oxidation, so that defects such as weld inclusions and incomplete penetration are less.
Advantages of Butt Welder
1.High welding efficiency. Because the workpiece is compacted with a double-force cylinder, its response speed is significantly faster than that of a hydraulic cylinder.
2.Automatic centering function. Ensure that the distance between the two ends of the pipe string and the two chip ends before welding is consistent, so as to ensure the same amount of burnt at both ends.
3.Easy operation and maintenance services. Since there is no hydraulic station, there are fewer product debugging points and failure points, and no oil leakage will occur.
4. Low requirements on the power grid. Only 250KVA power grid can be satisfied.
5. High welding accuracy. Programmable controller PLC and imported stepping are used to control the flashing process, and the firing amount and firing speed can be accurately set; the welding current is controlled by the microcomputer welding controller. The center distance error of the chip head after welding can be adjusted. Controlled within ± 0.2mm, which is convenient for subsequent component welding.
6. Energy saving. The radiator flash butt welding machine uses two 125KVA welding resistance transformers as the power source, pneumatic compaction, upsetting, and no hydraulic station. Compared to other other single-phase AC welding resistance transformers using two 315KVA And two welding machines with power of 18KVA hydraulic station, UN-250AB welding machine can save electricity by 78%
