High-tenacity gas shielded welding wire for welding low-temperature steel and using method thereof
A technology of gas-shielded welding wire and high toughness, which is applied in the direction of welding/welding/cutting articles, welding media, welding equipment, etc. Ductile-brittle transition temperature, good low-temperature toughness, and the effect of improving low-temperature toughness
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[0021] Below in conjunction with experimental data and embodiment the present invention will be further described.
[0022] According to the chemical composition range of the welding wire of the present invention and the mass percentages used in the following examples, a vacuum induction furnace is used to smelt multi-furnace welding wire steel, and through forging, rolling, wire drawing, copper plating and shaft winding, it is processed into a wire with a diameter of 1.2mm. The chemical composition of the finished welding wire and the welding wire of each furnace is shown in Table 1.
[0023] The welding wire of each furnace adopts volume 80% Ar+20% CO 2 Under argon-enriched gas protection, the same part was welded by the same person by the same person, and the same mechanical properties were tested with the same equipment and conditions at the same time after welding. The mechanical properties of the deposited metal are shown in Table 2.
[0024] The chemical composition of...
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