Shipbuilding Welding & Cutting Solutions
Tackling Three Core Bottlenecks in Hull Construction
Focusing on three critical scenarios in shipbuilding — longitudinal stiffener welding on shell plates, circumferential seam welding during grand block assembly, and precision cutting of thick plates — we offer full-process upgrades to enhance welding efficiency and cutting precision, setting new industry benchmarks.
01｜Longitudinal Stiffener Welding System for Shell Plates
Application Scenario & Technical Challenges
Typical Conditions:
Continuous fillet welding between curved fore/aft shell plates and T-type stiffeners; cumulative weld length exceeds 25 km per vessel.
Industry Pain Points:
Manual welding shows weld penetration fluctuation of ±15%, leading to a >22% failure rate in IACS UR W11 fatigue tests.
Traditional welding speeds are limited to 0.4 m/min, consuming over 35% of total hull construction time.
Recommended Solution
AUTO MIG 36 (Primary Automated Option)
Cooling: Gas Cooled
Duty Cycle: 60% — 340A (CO₂), 300A (Mixed Gas)
Wire Size: 0.8–1.6 mm
MIG 24 (Handheld MIG Gun for narrow spaces and curved areas such as fore hull plates)
Cooling: Gas Cooled
Duty Cycle: 60% — 250A (CO₂), 220A (Mixed Gas)
Wire Size: 0.8–1.2 mm
02｜Circumferential Seam Welding System for Grand Block Assembly
Application Scenario and Failure Case
Application Scenario & Technical Challenges
Typical Conditions:
Welding of circumferential seams between cargo and engine room sections; plate thickness ranges from 40–60 mm (DH36/EH40 high-strength steels).
Industry Pain Points:
Accumulated heat from manual multi-pass welding causes excessive distortion (>5mm/m), with flame correction costs reaching ¥800 per meter.
Precise heat input control required (≤2.5 kJ/mm) to prevent welding-induced deformation.
Recommended Solution
Recommended Welding Guns
AUTO MIG 501D (Primary Automated Option)
Cooling: Water Cooled
Duty Cycle: 100% — 500A (CO₂), 450A (Mixed Gas)
Wire Size: 0.8–1.6 mm
MIG 36 (Heavy-Duty Handheld MIG Gun for local repairs)
Cooling: Gas Cooled
Duty Cycle: 60% — 340A (CO₂), 300A (Mixed Gas)
Wire Size: 0.8–1.6 mm
03｜High-Precision Plasma Cutting System for Marine-Grade Thick Plates
Application Scenario & Technical Challenges
Application Scenario & Technical Challenges
Typical Conditions:
Three-dimensional cutting of 20–50mm EH36 shell plates, requiring simultaneous bevel processing.
Industry Pain Points:
Traditional flame cutting produces a heat-affected zone (HAZ) of 6–8 mm, reducing cold bending performance by 40%.
Manual cutting inaccuracies lead to assembly gaps >3 mm between segments, increasing the risk of welding deformation.
Recommended Solution
PLASMA IPR400
Output: 400A High-Frequency Plasma
Duty Cycle: 100%
Gas Pressure: 5.5–6.0 Bar
Gas Flow: 90–110 L/min
Post-Flow: 60s
Optimal Cutting Capability: 50 mm @ 500 mm/min
Conclusion｜Building System-Level Welding Capability for Shipbuilding
By integrating high-performance welding guns with automated welding and cutting systems, we offer scalable solutions for large-vessel construction. Whether it’s kilometer-scale longitudinal welds or precision bevel cutting, we ensure excellence in strength, safety, and productivity — laying a solid foundation for modern shipbuilding.
For detailed technical specs or product samples, contact us to receive the full product manual. We look forward to being your reliable partner in shipbuilding welding and cutting.
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