Congratulations on your purchase of Alumifix Welding Rods.
Three Step Procedure:
The Alumifix Welding Rods are high-quality special Aluminum-alloy rods used to weld/braze primarily Aluminum and Aluminum alloys but can be used to braze any other non-magnetic metals except for stainless steel.
The procedure of usage consists of a few simple steps that have to be done properly in order to get a well-done weld. It follows a three-step process; Brushing, Heating and Applying.
The surface to be welded should be metallurgically clean, meaning it should be free of any free electrons and ions. Don’t panic, it’s easy to achieve, we’re getting close to it. Also, the aluminium forms an oxidation layer on its surface, thus protecting the lower layers of oxidation, and we don’t want this layer on the welded surface in order to get a good weld. Any layer of aluminium oxide must be removed. When you puncture through this layer, it breaks up into a powder and floats to the surface of the metal.
This is easily achievable by brushing with a stainless steel brush just before heating. Brush it vigorously, and start heating. It’s a good idea to also do a quick brush while heating and before applying the rod, as this will remove any newly formed oxidation layer and easily create a more rough surface, so the rod material can stick better to the surface of the welded part. The more you brush it when the required temperature is achieved, the better the connection (penetration) into the base metal will be. However, several strokes are usually enough to do the job.
Use a heat source to heat the base metal (we don’t apply the rod yet). You can use an LP gas torch, but MAPP Gas is a perfect choice. The more heat the torch can develop, the better and quicker the base metal can be heated. If you’re welding two pieces with different thickness, try to heat them equally by applying more flame to the thicker piece.
- When you feel the required temperature (896°F / 480°C) is developed on the base material, do a few strokes with the brush, keep the flame on the base metal, and test if the rod melts (if welding different thickness pieces, test with the thicker piece as it builds heat harder).
- The right temperature must be attained in order for the rods to melt. Thicker pieces take a longer time to get to the desired temperature. For heavier pieces, it is recommended that you use a fuel-oxygen torch using a large tip with a neutral flame to spread the heat evenly.
When the rod starts melting from the base metal, do a few more strokes with the stainless steel brush, and then apply the rod. When finished, remove the flame and let it cool down. It will harden in a matter of seconds, but let it cool down naturally (i.e. don’t immerse in water etc.) so the joint will stick well to the base metal.
That’s about it. If done properly, you have a sound joint, stronger than aluminium.
Following the above steps is vital to the success of your job using the welding rods. In the case that you do not achieve your desired result, rest assured that you will get the hang of it soon! It may take some practice to attain a great weld/braze although the end result will not only be fulfilling, but well worth it!
1. Please wear the required safety equipment while using the welding rods. We recommend using safety equipment including eye protection and gloves at all times during the operation.
2.When welding/brazing thicker (or larger) parts together, it’s a good idea to use another heat source to preheat the welding area. You can use a kitchen stove or another (standalone) torch that will constantly help to keep the heat to the area of interest.
3. Before brazing/welding for the first time, it’s a good idea to practice on a can or other scrap piece of aluminium, so you get the feeling of this brazing/welding method.
4. Always remember – metallurgically clean surface is the key to a well-done weld.
5. Being in control of the heat is important, but also can be tricky.