Welding A Brass Radiator

Both pieces to be joined and the filler all have similar melting points. I have an old international 444 tractor with a brass radiator.

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It is leaking along 3 of the seam between the top and bottom parts of the reservoir tank.

Welding a brass radiator. Welding repair alloy brass radiator. The mixture will set in 4 to 6 hours and be completely cured in 15 to 24 hours. Apply your mixed J-B WELD all over the leak area liberally with the wooden tool.

The flux will transfer the heat and given both sides. Repairs done to aluminum radiators dont usually last since the metal expands and contracts weakening it as it heats and cools. Super Alloy 1 contains cadmium.

Cut through the affected tubes close to the header plate leave enough tube so that you can get hold of it with a pair of long nosed pliers heat it genltly just enough to melt the solder holding the tube and pull the stub out. Co Cleveland Ohio 14439 Tel. Soldering would be good silver solder is better but requires more heat.

Step 5 Replace the radiator plug on the bottom of the radiator and refill the fluid to the appropriate level. A weld involves joining two similar materials using if needed a similar material as filler. What ever method you choose lay the rad horizontally on a bench fill the tank with water 1 below the bung level and solder away.

When cool apply paste flux to surface then clamp the part in place. The air-side of the tube-to-header joints are soldered to provide a dual bond that reinforces and seals the weld joint. The water will dissipate the heat from the rest of the rad.

Last step pressure test. Aluminum welding brazing and soldering are now quick and easy using a simple hand held torch and Super Alloy 1 and Super A. Because brass has zinc in it you must be careful not to breathe in the fumes when TIG welding.

However with the proper preparation and the right safety materials you can use this method successfully. Once comfortable tin the radiator and wipe off excess with dry rag. If you choose to weld the cracked area the metal is still weak and will likely get damaged again.

Zinc has a really low melting point. For example joining two sheets of mil. Combine that with the fact that brass is very thermally conductive and requires quite a bit of heat input to weld and you have an arc that tries to vaporize the zinc.

Click to buy this tool. Before welding the brass find out the zinc content of the material you are going to weld because zinc has a lower melting point than copper. This would not be a weld by definition.

The reason tig welding brass is difficult is because of the zinc. Laser welding can be used to weld thin brass radiator tubes that are superior to the thinnest conventional lock-seam or high-frequency welded tubes. Since the oxygen and acetylene are stored individually you have more control over the torchs flame.

Some do no recommended gas welding brass since the zinc tends to vaporize and cause fumes and porosity. Use an oxyacetylene torch in most instances to weld brass. CopperBrass Radiator Soldering - Product Guide Superior Flux and Mfg.

Copper-brass radiators are the ones that can be repaired effectively because of their solder construction. Boyax Radiator Brass Alloy Specialist. Apply heat to the bung while touching solder to the joint.

The extensive process and product RD resulted in the development of a copperbrass welded tube-to-header joint radiator core that also incorporates seam-welded tubes. There is no direct fit replacement radiator available for this tractor so the only option is to fix this one or modify a radiator.

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