Flux-covered welding wire and preparation method thereof
A coating and welding wire technology, which is applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of high degree of automation and the inability to simultaneously melt the "tube" shape of the end of the welding wire, etc., to achieve a high degree of automation and enhance the overall Effect of position weldability and no fill rate restriction
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[0032] A kind of coated welding wire, which consists of a coating and a welding core, and the coating is wrapped outside the welding core. The welding core is the metal core of the welding wire, and it mainly plays the role of conducting current and filling metal during welding. The metal core is a solid wire. Compared with the alloy composition of the coated wire, the metal core can be a solid wire with similar or the same alloy composition, or a solid wire with a different alloy composition. The medicine skin is a medicine skin that contains slag-forming and gas-forming substances. The coating is decomposed and melted in the welding process to form gas and slag, which play a role in protecting and improving process performance. The composition of the deposited metal alloy of the welding wire of the present invention is as follows:
[0033] Table 1 Alloy composition of welding wire deposited metal (mass percentage)
[0034]
[0035] Others are Fe and other unavo...
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