Simple Welding instructions
The Simple Welding Rods are high-quality welding rods sintered from a special mix of different metal powders.
They are used to weld/braze primarily Aluminum and Aluminum alloys, Zinc, Brass, and Copper. 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.
These steps must be done properly in order to get a good weld:
The surface to be welded should be metallurgical clean (free of oxidation layer, any free electrons, and ions).
Aluminum forms an oxidation layer on its surface, thus protecting the lower layers of oxidation.
We don’t want this layer on the welded surface in order to get a good weld.
Before heating the welding area - Brush it with a stainless steel brush (or sand with sandpaper) until shiny.
Use a heat source to heat the base metal (don’t apply the rod yet).
You can use an LP gas torch, but MAPP Gas is a better choice.
The more heat the gas can develop, the more efficiently the base metal can be heated.
Try to evenly heat the area where you're about to apply the rod.
For thick (and/or more massive parts) make sure you use MAPP Gas. Oxygen-acetylene (if available), is also a good choice of a heat source, especially if you work on thick and large parts.
If you’re welding two pieces with different thickness, try to heat them equally by applying more flame to the thicker piece.
Do a quick brush while heating (before applying the rod), 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, the better the connection (penetration in) to the base metal will be when the required temperature is achieved.
However, several strokes are usually enough to do the job.
When you feel the required temperature (728°F / 387°C) is developed on the base material, do a few strokes with the brush on the area you are about to weld.
Keep the flame on the base metal, and test if the rod melts (if welding different thickness pieces - test with the thicker piece since it is harder to build heat). When the rod starts melting from the heated base metal, do a few more strokes with the stainless steel brush, keep the flame close to the spot where you’re about to apply the rod (to maintain the temperature).
Apply the rod.
IMPORTANT: Do not put the rod directly under the flame.
The part may lose temperature in the following scenarios:
Too small and thin - keeping a direct flame on it can cause damage.
Too massive and thick - it dissipates the heat easily.
If the part is small and/or thin - keeping the flame on it will destroy it.
Try to find an ideal distance to keep the flame on the part. It usually is best to keep it further away. This will keep the temperature while not melting or damaging the part.
If the part is massive and/or thick - heat the part a bit longer after the rod starts melting. Keep the flame on the part but away from the direct spot which you are applying rod. This will stop it from cooling down too fast (and will keep enough heat while applying the rod).
When finished, remove the flame and let it cool down naturally.
It will harden in a matter of seconds.
IMPORTANT: Let it cool down naturally i.e. don’t immerse in water etc.
(Otherwise the joint won’t stick well to the base metal).
If done properly - you’ll have a sound joint, stronger than aluminum (base metal).
That’s about it!
Step 1: Brush the part you’re about to weld/braze with stainless steel brush or sandpaper to remove the oxidation layer.
Step 2: Use a heat source, to heat the base metal to at least 728°F (387°C).
Step 3: When hot enough, move the flame aside (but keep it on the part to maintain temperature), and apply the rod – the rod should melt on contact with the hot metal part.
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