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Flux-cored wires are available in self-shielded and gas-shielded varieties for welding base materials, including mild steel, low-alloy steel, stainless steel, and nickel alloys. This graphic details their operation.No single filler metal is suitable for every job. The mechanical and chemical properties of the base material, the required welding position, the available equipment, and the welding operator's skill set, among other considerations, all factor in making the best selection.When you are seeking to increase productivity through higher deposition rates, flux-cored wires often are a viable option. These wires are known for high performance and weld quality in industries ranging from general fabrication and manufacturing to construction, offshore, and shipbuilding.Flux-cored wires have unique welding characteristics and requirements, advantages, and limitations. Knowing these can help you determine whether they are the right choice.Olvass tovább
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There are two types of flux-cored wire electrodes: gas-shielded and self-shielded. As its name implies, the gas-shielded type of flux-cored wire requires an external shielding gas. The self-shielded variety does not.The flux coating on gas shielded flux-cored wires solidifies faster than the molten weld material. Consequently, a sort of shelf is created which holds the molten pool when welding overhead or vertically up. Gas-shielded flux wires work well when welding thicker metals. They also work well for welding out-of-position applications. Slag removal is easy with this type of wire. Self-shielding flux-cored wires do not require an external shielding gas. With this type of electrode, the weld pool is protected as gas is generated when the flux from the wire is burned. Because the self-shielding wire produces its own protective shield and doesn’t require an external gas tank, it is more easily carried about.Olvass tovább
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