What is Welding
is some mystery involved with the term "welding flux." Hopefully,
this article will give you a better understanding of what flux is, what its functions
are, and how to store flux and consumable stick and wire electrodes.
VS. Non Fusion:
When soldering copper or brass, a non-fusion process, the
area has to be cleaned first. The most common chemical used for this is muriatic
acid. After the joint or area to be soldered is cleaned the metal is evenly heated
and the "flux" is applied; it's usually brushed on. When the metal is
heated solder is added manually and the metals become joined. (The same process
holds true with "brazing." In brazing steel, the area is cleaned, the
metal is heated and the brazing rod is heated and dipped into the can of "flux"
and used that way.)
"welding" metals, fusing them together, requires more than just heating
the metals to be joined. When welding, the base metals along with the welding
rod or wire electrode need to be taken to high temperatures for fusion. This causes
chemical reactions that do not exist at low or moderate temperatures.
Rod, Gases And Heat:
The electrode, a coated rod or wire, the base metal
(s) and the heating action itself react chemically with the oxygen and nitrogen
in the air. During the process the metal must be protected from these reactions
so the strength and integrity of the welded joint can be assured. Therefore, the
stick or wire electrode and the flux it provides, cover the arc and the molten
pool with a protective shield of gas and vapor. "Shielding the arc"
is the term most often used.
welding rods and wire
electrodes the "flux" is applied in the factory. The flux has several
any low-hydrogen or wire electrodes, it is imperative to use proper storage procedures.
Welding rods and wire electrodes need to stay in their sealed container. Once
opened and the electrode is exposed to the air (even for a few hours in humid
conditions) they should be reconditioned and then stored in a rod oven until used.
(When in doubt always consult the manufacturer or suppliers recommendations.)
has a wide range of reconditioning and holding ovens, in all sizes, models, and
shapes. We also carry unheated storage containers and replacement parts for ovens.
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