How to Fix the Leakage of Auto Radiator

After the long-term use of auto radiator, there may be break and damage, because the auto radiator is not fastened tightly, or the there are actually damaging substances within the coolant which trigger corrosion, or it's broken by the blade with the enthusiast. More often than not, for that auto radiator with leakage, we can unload it kind the auto, discover the spot of leakage by the method of injecting water or air and mark it for additional fix.



Fix and Welding of Leakage in the Crack of Auto Radiator



one. Restore and Welding from the Crack at the Joint of Drinking water Tank & Outlet Pipe

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



2. Fix and Welding of Cracks in the Drinking water Tank

(1) Brazing

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



part two Pasting

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



Repair and Welding of Leakage in the Pipe of Auto Radiator



Leakage at the pipe of aluminum radiator is very tough, so we will need to deal with it in accordance with practical situation.



1. Direct Welding

Direct welding method is often applied when the corrosion from the pipe is not serious and you'll find only some leakage holes. Before the welding, we ought to 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 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 a single and weld the two ends. During the expanding from the pipe, make sure to remove the dirt and h2o scales in the broken pipe, on the other hand, 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 in the new pipe. During the pressing, soap drinking water is usually applied as lubricating solution. This approach will not break the radiating fins and maintain the outlook of auto radiator.



Auto radiator, which has gone through fix and welding mentioned above, should really be examined by sealing test to ensure there is no additional leakage.