WELDING SOLUTION-FIXED STRUCTURE_T-K-Y JOINT
T-K-Y Joint is one of the most difficult welding applications in the offshore industry. It allows to access from one side only, so high welding skills of operators is required . T-K-Y requires out-of-position welding and full penetration. Flux cored wires solution has been widely applied here.
Benefit and Advantage：
Stationary Oil Platform
Stationary Oil Platform
T-K-Y Welding Solution
T-K-Y Welding Solution
| Base Metal: | API 2H50, API 2W 50 or 60, S355 |
| Type: | T-, K-, Y Joint |
| Feature: | High Fatigue Load |
| Welding Position: | Out of Position |
| Welding Position: | Smooth bead |
| Solutions: | PRIMACORE® LW-71H Plus, PRIMACORE® LW-81Ni1H, PRIMACORE® LW-81K2H |
| INNERSHIELD® NR 440Ni2 | |
| Equipments: | OPTIMARC® CV500P, FLEXTEC® 650X |
The Jack-up Rig is one of the main welding parts for the whole platform, which plays a decisive role in the platform serving life.The Jack-up rig base metal are high strength low alloy steels of Y.S. 100KSI grade with the thickness up to 200mm. It requires 100% NDT, minimum deformation and good mechanical properties at low temperature. LINCOLN ELECTRIC® has full range of high strength steel consumables, such as stick electrode, MIG & TIG wires, flux cored wires and submerged consumables.
Jack-up Drilling Platform Welding Solution - 1
Jack-up Drilling Platform Welding Solution - 1
Jack-up Drilling Platform Welding Solution - 2
Jack-up Drilling Platform Welding Solution - 2
Welding Requirements：
The Jack-up leg base materials are high strength low alloy steels up to Y.S. 100KSI grade, thickness can reach 200mm. 100% NDT, minimum deformation and good mechanical properties at low temperature. Manufacturing rules conform to AWS D1.1, ABS MODU or DNV OS-C401.
| Application: | Jack-up Drilling Platform High-strength Steel Pipe Rack Plate |
| Tower base metal: | EQ70,A514,S690 |
| Process: | SMAW Root/SMAW Fill,FCAW-GS Root/SAW Fill,SMAW Root/SAW Fill |
| Application Requirement: | AWS plate all-weld: Tensile strength≥770Mpa; Yield strength≥690Mpa; -40°C or -60 ℃ low-temperature impact energy (weld bead & heat-aected zone) ≥70J |
| Joint: |
Thickness: 100mm-180mm; Tensile (Traverse) ≥770Mpa; -40°C or -60 ℃ low-temperature impact energy (upper surface and base) ≥69J |
| Tower base metal: | EQ70,A514,S690 |
| Process: | SMAW Root/SMAW Fill,SMAW Root/FCAW-GS Fill |
| Application Requirement: | AWS all-weld plate: Tensile strength 770Mpa, Yield strength 690Mpa, -40°C or -60 ℃ low-temperature impact energy (weld bead & heat-aected zone) - 70J |
| Joint: |
Thickness:100mm-180mm, Tensile strength (lateral) ≥770Mpa, -40°C or -60 ℃ low-temperature impact energy (upper surface and base) ≥46J |
| Rack to Chord: | Root weld with stick electrode, MIG wire or FCAW, fill and gap weld with SAW. |
| Rack to Rack: | Root weld with stick electrode, fill & gap weld with FCAW or stick electrode. |
| Welding Procedure: |
LINCOLN ELECTRIC® Company get full experience on jack-up leg welding application and can propose the most reasonable procedures per customer’s base material, groove type, production condition, mechanical requirements etc. |
| Consumables | CONARC 80, CONARC 85, OUTERSHIELD® 690, LAC 690 |
| Equipment： |
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