You can arc weld & then the flux will be in the rod.
Use special flux cored electrode without purging dam.
yes
Flux is used to protect the weld from the atmosphere. Flux produces a gas shield over the liquid portion of the weld during the welding process as the electrode is used. The flux then forms a protective layer over the weld called slag. Flux also acts as a deoxidizer, pulling oxygen and nitrogen from the weld pool to the surface, preventing porosity. There are many other and much more technical reasons that involve chemistry of the weld metal, arc characteristics, and mechanical properties of the finished weld.
yes
Soldering without flux is possible, but using flux makes the process easier and helps create a stronger bond between the materials being soldered.
its called flux
The electrode flux coating in welding serves multiple purposes: it provides protection against contaminants, helps produce a stable arc, controls the weld pool shape, and forms a slag to protect the weld as it solidifies. The flux coating also contributes to the overall quality of the weld, improving its mechanical properties and appearance.
dfh
Yes .... but most welds will not be as good as those using flux. SMAW with bare electrodes produces poor results. GTAW and GMAW are done without flux when an inert gas is used to protect the puddle. Some Oxy-fuel welding can be done with out it. In most applications flux is used not only to protect the molten puddle but also add ingredients to the weld.
When you weld steel you need to make sure that oxygen in the air is kept away from the weld while it's being formed. Otherwise the iron in the weld burns in the oxygen and forms a poor weld. Electric welding rods are generally coated with a flux which forms a gaseous shield around the weld point and keeps away the air. Some welding processes (MIG for example - MIG stands for metal inert gas) do not use a flux coating but have an arrangement where argon or CO2 is passed to the weld point to keep the air away in a different way.
The arc welding process that deposits a layer of granular flux over the weld area is known as Submerged Arc Welding (SAW). In this method, the welding arc is submerged under a thick layer of granular flux, which protects the weld pool from atmospheric contamination and helps to stabilize the arc. The flux also contributes to the formation of a slag layer that can improve the quality of the weld. This process is commonly used for welding thick materials and in industrial applications due to its efficiency and effectiveness.
one of the method is manually dipping the filler rod in a canister of loose flux as the weld proceeds