How to Fix the Leakage of Auto Radiator

Following the long-term utilization of auto radiator, there may be break and harm, because the auto radiator just isn't mounted tightly, or even the you can find harmful substances in the coolant which trigger corrosion, or it truly is broken by the blade with the admirer. More often than not, for that auto radiator with leakage, we are able to unload it kind the auto, discover the spot of leakage from the strategy for injecting water or air and mark it for additional repair.



Fix and Welding of Leakage in the Crack of Auto Radiator



1. Repair and Welding in the Crack in the Joint of H2o Tank & Outlet Pipe

The joint of lower h2o tank and the outlet pipe is the spot where cracks happen most frequently. That's because the joint has gone through long time vibration. During the welding, we can clean the crack with wire brush and weld it with a welding iron.



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

(1) Brazing

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



section two Pasting

Before the welding, drill a Φ1.5 mm hole in the end with the crack. Then, come across a copper or iron sheet together with 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 fixed together. Weld the rest part of the edges.



Restore and Welding of Leakage at the Pipe of Auto Radiator



Leakage in the pipe of aluminum radiator is exceptionally tough, so we must deal with it as per practical situation.



1. Direct Welding

Direct welding technique is usually applied when the corrosion with the pipe isn't serious and you can find only some leakage holes. Before the welding, we will need 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 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 1 and weld the two ends. During the expanding from the pipe, make sure to remove the dirt and drinking water scales within 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 in the new pipe. During the pressing, soap drinking water may be applied as lubricating solution. This technique will not break the radiating fins and maintain the outlook of auto radiator.



Auto radiator, which has undergone restore and welding mentioned above, should be examined by sealing test to ensure there is no more leakage.