How To Make Aluminium Soldering Flux

As the flux melts the rod is.

How to make aluminium soldering flux. It is mainly used to prevent oxidation of the base and filler materials. Flux is a low-melting alloy of metals through which two materials are soldered. Well get you started and dont miss the giveaway at the end of the video.

Cover the container and allow the mixture to sit for at least 8 to 12 hours. Place the rosin inside the jar if you cant wait for it to dissolve youd want to grind up the crystals to a fine dust this will vastly improve the time it takes to dissolve from hours to minutes. Use a drop of 3 in 1 brand oil and a hot iron.

Flux is a wonderful goo that makes soldering faster and easier. I dont know the exact chemistry of this method but it worked for me to solder aluminium wires but not thin foil. A flux for soldering aluminum and other nonferrous metals and iron to the same or different metals comprising 50-70 PERCENT EPOXIDE RESIN 15-30 PERCENT ROSIN 12-18 PERCENT TRIETHANOLAMINE AND 3-5 PERCENT OF A HEAVY METAL FLUOROBORATE OR BORON TRIFLUORIDE MONOETHYLAMINE AND OPTIONALLY AN AROMATIC AMINE OR AMIDE.

Typical compounds used are carboxylic acids eg. Add your solvent start with a small amount and keep adding until you are happy with the way your flux. The flux is relatively expensive.

An easy way to solder aluminum is to put some vegetable oil on the spot to be soldered get the spot hot with your iron then get the solderflux to melt in contact with the vegetable oil. Just a drop of the oil over the solder. The SIF Aluminium flux is used as a temperature indicator and can be applied via the rod or applied direct to the workpiece as a paste made by mixing the flux with water.

One well-known solution is to use a piece of polyvinylchloride tube as flux when soldering. They are used in both extractive metallurgy and metal joining. In previous videos we compared different types of commercial flux but did you know its possible to make a simple and effective flux at home.