![]() ![]() ![]() When the arc is initiated, the heat begins to melt the base metal and the electrode. Since flux is attached to the stick electrode or FCAW electrode filler wire, it is deposited at the same time as the filler metal. For stick electrodes, the filler metal rod is dipped into a molten flux which then solidifies. But many fluxes also include alloyed metal powder to help welds acquire certain mechanical properties such as hardness, tensile strength, etc.įluxes typically cover stick electrodes and are found at the core of the tubular flux-cored wire. Fluxing agents are used to help aid the flow.įluxes are made from a combination of organic and inorganic materials including but not limited to ammonium chloride, resin acids, zinc chloride, hydrochloric acid, and borax. The Merriam-Webster Dictionary defines flux as “a continuous flow.” Another definition states that it is a “substance used to promote fusion,” and “the rate of transfer of fluid, particles, or energy across a given surface.” So, it involves flow, and in this case, a transfer of filler metal across the arc into the molten weld pool. This is partly because fluxes have properties that aid structural welding, including producing stronger welds than MIG. But there are necessarily times when Stick or FCAW must be used. There are times when MIG will be an ideal choice because of its ease and cleanliness. So, what does flux do in welding? If you can have a good weld without flux, why use it at all? Not all welding processes work for every application. But why? Stick and Flux-cored welding utilize flux. Stick and FCAW processes produce a lot of smoke and dust. However, not all welding is clean like this. If you’ve ever messed around with a MIG welder, you know that it can produce sound and clean welds. 0 What Does Flux Do in Welding? Beginner’s Guide 2023 ![]()
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