Shipbuilding Welding Electrode
1. Application
Shipbuilding welding electrodes find application in various welding processes and tasks during the construction and repair of ships and marine vessels. Here are some common applications of shipbuilding welding electrodes:
Hull construction: Shipbuilding welding electrodes are used to weld the hull plates and sections together, forming the main structure of the ship. This includes welding the hull plating, frames, bulkheads, stiffeners, and other structural components.
Pipe welding: Welding electrodes are employed for joining and fabricating pipes used in various ship systems, including fuel lines, water systems, hydraulic systems, and ventilation ducts. Welding electrodes are chosen based on the material of the pipes and the specific requirements of the application.
Tank fabrication: Ships often require various tanks, such as fuel tanks, ballast tanks, and water tanks. Welding electrodes are utilized to construct and weld these tanks, ensuring their integrity and leak-free performance.
Machinery and equipment installation: Shipbuilding welding electrodes are used in the installation and welding of machinery, equipment, and fittings on board ships. This can include welding brackets, supports, engine mounts, propeller shafts, and other components.
Structural repairs: During ship repairs and maintenance, welding electrodes are used to repair damaged or worn-out structural components. This can involve cutting out and replacing sections of the hull, repairing cracks or fractures, or reinforcing weak areas.
Deck and superstructure construction: Welding electrodes are employed in the construction of ship decks, superstructures, and accommodation areas. This includes welding deck plates, handrails, stairs, ladders, and other structural elements.
Propeller and rudder fabrication: Shipbuilding welding electrodes are used in the fabrication and repair of propellers and rudders. These critical components require precise and reliable welds to ensure proper functioning and performance.
2. Typical Chemical Composition
C
Mn
Si
P
S
Ni
Cr
Mo
V
norm
≤0.15
≤1.25
≤0.90
≤0.035
≤0.035
≤0.30
≤0.20
≤0.30
≤0.08
e.g.
0.068
0.74
0.44
0.024
0.015
0.006
0.027
0.003
0.016
3. Mechanical Property of Deposited Metal
ReH (MPa)
Rm (MPa)
A5 (%)
KV2 (J)
norm
≥375
490-660
≥22
≥47
e.g.
450
510
27
75
4. Reference Current
Diameter (mm)
3.2
4.0
5.0
Length (mm)
400
450
450
welding current (A)
120-150
160-200
200-250
5. Certificate: DNV.GL, KR, CCS, LR, NK, BV, ABS.
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