One, working principle and features: 
 The radiator Flash two 125KVA power frequency solder transformer for power supply from both ends, pressed on the welder, discharge flash, upset, complete the docking of the two radiator titles intermediate oval tube. Burnt, the amount of the upset, the welding current by the PLC through the set through the LCD display. 
 Second, the main advantages: 
 1, energy-saving. Radiator flash butt welding machine used two 125KVA solder transformer for power, pneumatic compression, upsetting, hydraulic station. Compared to the other other two 315KVA single-phase AC solder transformer and two power for the 18KVA hydraulic station welder, UN-250AB welder can be saving up to 78%. 
 2, the requirements on the grid. Only 250KVA power grid can be met. 
 3, high precision welding. Programmable logic controller PLC and imported stepper motor to control the flash process to precisely set the burnt and melted speed of; microcomputer solder controller to control the welding current. After welding, the titles of the center distance error can be controlled to within ± 0.2mm to facilitate follow-up group piece welding. 
 4, automatic centering function. To ensure the welding before the string ends and the spacing of the two titles side, thus ensuring consistent at both ends burnt the amount. 
 5, the welding efficiency is high. Since the compression of the workpiece times the force of the cylinder, its speed of response was significantly faster than the hydraulic cylinder. 
 6, operation and maintenance services convenient. Hydraulic station, the debugging point, the point of failure is less, not oil spills and other phenomena.