How you can Restore the Leakage of Auto Radiator

After the long-term utilization of auto radiator, there may be break and damage, because the auto radiator is just not fixed tightly, or perhaps the there are actually harmful substances within the coolant which cause corrosion, or it can be broken from the blade with the fan. Most often, for that auto radiator with leakage, we are able to unload it kind the vehicle, locate the spot of leakage from the method of injecting h2o or air and mark it for additional repair.



Restore and Welding of Leakage at the Crack of Auto Radiator



one. Repair and Welding with the Crack at the Joint of H2o Tank & Outlet Pipe

The joint of lower drinking water tank and the outlet pipe is the spot where cracks happen most often. That's because the joint has gotten through long time vibration. During the welding, we are able to clean the crack with wire brush and weld it with a welding iron.



2. Restore and Welding of Cracks in the Water Tank

(1) Brazing

Before the brazing, the crack spot should be burnished with emery cloth or file to the original color with the metal. Light oxydizing flame ought to be applied during the welding so that the welding will be much firmer. Pay more attention to the angle of the welding nozzle in case that it could burn through.



part two Pasting

Before the welding, drill a Φ1.5 mm hole at the end from the crack. Then, discover a copper or iron sheet with the thickness of 0.8-1mm as pasting sheet. Clean the crack and the pasting sheet and apply zinc chloride solution on they both. Press the pasting sheet against the crack closely. Heat the pasting sheet with welding iron so that they can closely fixed together. Weld the rest part of the edges.



Repair and Welding of Leakage in the Pipe of Auto Radiator



Leakage in the pipe of aluminum radiator is extremely tough, so we really should deal with it in line with practical situation.



1. Direct Welding

Direct welding technique is usually applied when the corrosion of the pipe is just not serious and you will discover only some leakage holes. Before the welding, we should really het the radiating fins and seal them off with a welding torch, push aside the radiating fins with flat nose pliers and reveal the welding spot. Check the welding spots, clean them and apply fluxes on them. Weld the leakage holes with welding iron. Then rearrange the radiating fins.



2. Expanding the Pipe

During the welding, unload the upper and the lower drinking water tank. Expand the inner hole from the pipe with leakage for 0.3-0.4mm with special cleaning rod. Press the new pipe into the old an individual and weld the two ends. During the expanding in the pipe, make sure to remove the dirt and h2o scales inside the broken pipe, or else, there'll be a heat insulating layer between the new pipe and the old pipe which will affects the heat dissipation effect. Polish the outside with the new pipe. During the pressing, soap water is usually applied as lubricating solution. This method will not break the radiating fins and maintain the outlook of auto radiator.



Auto radiator, which has experienced restore and welding mentioned above, should really be examined by sealing test to ensure there exists no much more leakage.