High-strength steel stranded electrode and welding method thereof
A technology of stranded welding wire and high-strength steel, applied in welding medium, welding equipment, welding equipment and other directions, can solve the problems of strength and toughness matching and welding process performance that are difficult to meet the technical requirements of steel pipe welding for offshore drilling platforms, and achieve excellent technology. performance, reduced material waste, the effect of good welding manufacturability
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Embodiment 1
[0031] A high-strength steel stranded welding wire, its components include: carbon 0.06%, silicon 0.8%, manganese 1.4%, nickel 0.9%, titanium 0.1%, chromium 0.18%, copper 0.02%, aluminum 0.05%, phosphorus <0.010%, sulfur <0.005%, and the balance is iron.
[0032] The welding method of above-mentioned high-strength steel stranded welding wire, comprises the steps:
[0033] S1. Use mechanical methods to process the welding groove, use argon gas for welding protection during cutting, and polish the groove processing surface smoothly; wherein the welding groove angle is 40°, and the horizontal welding position adopts a symmetrical groove;
[0034] S2. Use the single pulse welding mode to weld the bottom weld bead, the welding current is 125A, the wire feeding speed is 5m / min, the back weld width is 7mm, the penetration depth on both sides of the root is 3mm, and the surface of the weld bead is cleaned; then use double pulse In the welding mode, two welds are welded in sequence, t...
Embodiment 2
[0037] A high-strength steel stranded welding wire, its components include: carbon 0.12%, silicon 0.4%, manganese 2.0%, nickel 0.5%, titanium 0.16%, chromium 0.14%, copper 0.04%, aluminum 0.02%, phosphorus <0.010%, sulfur <0.005%, and the balance is iron.
[0038] The welding method of above-mentioned high-strength steel stranded welding wire, comprises the steps:
[0039] S1. Use mechanical methods to process the welding groove, use argon gas for welding protection during cutting, and polish the groove processing surface smoothly; wherein the welding groove angle is 45°, and the horizontal welding position adopts a symmetrical groove;
[0040] S2. Use the single pulse welding mode to weld the bottom weld bead, the welding current is 115A, the wire feeding speed is 5m / min, the back weld width is 8mm, the penetration depth on both sides of the root is 2mm, and the surface of the weld bead is cleaned; then use double pulse In the welding mode, two welds are welded in sequence, ...
Embodiment 3
[0043]A high-strength steel stranded welding wire, its components include: carbon 0.08%, silicon 0.7%, manganese 1.6%, nickel 0.8%, titanium 0.11%, chromium 0.17%, copper 0.025%, aluminum 0.04%, phosphorus <0.010%, sulfur <0.005%, and the balance is iron.
[0044] The welding method of above-mentioned high-strength steel stranded welding wire, comprises the steps:
[0045] S1. Use mechanical methods to process the welding groove, use argon gas for welding protection during cutting, and polish the groove processing surface smoothly; wherein the welding groove angle is 41°, and the horizontal welding position adopts a symmetrical groove;
[0046] S2. Use the single pulse welding mode to weld the bottom weld bead, the welding current is 117A, the wire feeding speed is 5m / min, the width of the back weld is 7.2mm, and the penetration depth on both sides of the root is 2.9mm, and the surface of the weld bead is cleaned; then use In the double pulse welding mode, two welds are welde...
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