Flux-cored welding wire for downward vertically
A vertical downward and chemical feeding technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of vertical downward welding of thin plate corner joints, etc., and achieve easy control and forming of molten pools. Beautiful, high toughness effect
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[0019] According to the composition range of the flux core of the flux cored wire of the present invention, three batches of flux cored wires were produced, and the flux core composition is shown in Table 1. The seamed O-shaped Φ1.2mm flux-cored welding wire is made by the method of coiling the steel strip. Composition (weight %) of the steel strip: C 0.04%, Si 0.01%, Mn 0.30%, P 0.013%, S0.008. The powder filling rate is 16%.
[0020] Three batches of flux-cored wires were used for welding experiments, and Q235C steel plates were used to process them into 4×120×300mm test plates, and the surface was derusted. Adopt DC (one) polarity, 260A, 28V, welding speed 600mm / min, CO 2 , 201 / min, the rod is extended by 15mm, and the welding is carried out vertically and downward, and the welding process is observed. The results show that the weld is well formed, the slag is removed well, the welding process is stable and there is less spatter. Use the same welding specification to su...
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