Solid wire for gas-shielded arc welding, gas-shielded arc welding metal, welding joint, welding member, welding method, and method for manufacturing welding joint
A technology of arc welding and gas shielding, applied in arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of corrosion resistance and aesthetic reduction of welded parts, and achieve good shape effect
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Embodiment 1
[0138] The manufacturing method of the solid welding wire for welding is as follows. That is, an ingot is produced by a vacuum melting method, forged, rolled, drawn, and annealed to form a welding wire raw material wire, and copper plating is further performed on the welding wire raw material wire, and then cold drawn to produce a solid wire with a diameter of 1.2 mm. welding wire. The chemical components (components of the entire welding wire including the plating layer) of the obtained solid welding wires are shown in welding wire Nos. 1 to 28 in Table 1. In addition, in Table 1, the chemical components of the content not included in the scope of the claims are underlined.
[0139] Using each welding wire having the chemical composition shown in the welding wire Nos. 1 to 28 in Table 1, steel sheets with a thickness of 2.3 mm (without zinc coating) having the chemical composition shown in the steel sheets No. 1 and No. 2 in Table 3 were used. Galvanized bare steel sheet) a...
Embodiment 2
[0224] As the solid welding wire for welding, the same welding wire as that used in the above-mentioned Example 1 was used, that is, the welding wire (welding wire No. Welding, to have the chemical composition shown in the steel plate No.1~12 of Table 3 (wherein, the composition of the steel sheet shown in Table 3 shows the composition of the parent steel sheet before galvanizing) plate thickness is 2.3mm zinc Clad steel plate for lap fillet welding. Welding conditions are also shown in Table 4 in the same manner as in Example 1. In addition, the zinc-plated steel sheet used for welding is such that the amount of the plating unit area weight on one side is 45 g / m 2 Those that have implemented hot-dip galvanizing on both sides by the way.
[0225] The composition of the weld metal in the welded joint obtained by the arc welding experiment on the above-mentioned zinc-coated steel sheet was analyzed, the results are shown in Table 5, and the generation of slag and the generatio...
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