Marine Engineering ERNiCu-7 Grade Nickel Alloy Welding Wire With Good Welding Performance
Product Introduction
ERNiCu-7 welding wire is a nickel copper alloy welding wire known for its excellent corrosion resistance and good mechanical properties, particularly suitable for various applications in marine engineering. The chemical composition of ERNiCu-7 welding wire mainly includes 62% to 69% nickel and 18.81% to 36.5% copper, which has good welding performance and corrosion resistance.This welding wire is mainly used for welding and repairing key structures such as offshore platforms, ships, and subsea pipelines. Due to its excellent resistance to seawater corrosion, ERNiCu-7 can effectively resist chloride ion erosion in seawater.
In marine environments, ERNiCu-7 welding wire not only provides excellent corrosion resistance, but also has good conductivity and thermal conductivity, making it an ideal welding material. In addition, this welding wire is also suitable for welding dissimilar materials and can form a strong connection between different metals. This characteristic makes ERNiCu-7 have important application value in the manufacturing and maintenance of marine equipment, which can significantly extend the service life of the equipment and reduce maintenance costs.
Parameter
| MIG | (15kg/spool), | Size |
| | | 0.8 1.2 2.4 3.2mm |
| TIG | (5kg/box),Strip |
Chemical Properties
| C | Si | Mn | Cr | P | Ni |
| ≤0.01 | ≤0.2 | ≤0.5 | 22.0-24.0 | ≤0.015 | Rem |
| Al | Mo | Fe | Cu | S | Co |
| 0.10-0.40 | 15.0-16.50 | ≤0.5 | ≤0.1 | <0.01 | <0.20 |
| Typical Welding Parameters |
| Diameter | Process | Volt | Amps (flat) | Amps (V/OH) |
| inch | (mm) |
| 0.035 | 0.9 | GMAW | 26-29 | 150-190 | Spray Transfer 100% Argon |
| 0.045 | 1.2 | GMAW | 28-32 | 180-220 | Spray Transfer 100% Argon |
| 1/16 | 1.6 | GMAW | 29-33 | 200-250 | Spray Transfer 100% Argon |
| 1/16 | 1.6 | GTAW | 14-18 | 90-130 | 100% Argon |
| 3/32 | 2.4 | GTAW | 15-20 | 120-175 | 100% Argon |
| 1/8 | 3.17 | GTAW | 15-20 | 150-220 | 100% Argon |
| Tensile Strength | 109 Ksi | 790 MPA |
| Yield Strength | 68 Ksi | 470 MPA |
| Elongation | 40-45% | |
| Density g/cm3 | 8.60 g/cm3 | |
| Melting Point ℃ | 1300-1360℃ | |
| Coefficient of Expansion. 21-93 Co, μm/m * Co | 11.90 | |
Specific Applications
- Marine oil and gas platforms: ERNiCu-7 welding wire is used to weld structural components and pipelines of the platform, ensuring long-term stable operation in harsh marine environments.
- Underwater pipeline: In underwater oil and gas transportation systems, ERNiCu-7 welding wire is used to connect and repair pipelines, which can effectively resist the corrosion of seawater.
- Shipbuilding and Maintenance: Welding of seawater cooling systems and other critical components used in ships to ensure their reliability in marine environments.
Advantages and Characteristics
- Excellent corrosion resistance: It performs well in seawater and other corrosive media, effectively preventing pitting and crevice corrosion.
- Good welding performance: suitable for various welding methods such as tungsten inert gas welding, melting electrode gas welding, and submerged arc welding, with beautiful weld formation and excellent mechanical properties.
- High temperature performance: It can maintain good mechanical properties in high temperature environments and is suitable for high temperature working conditions.
The chemical composition of ERNiCu-7 welding wire mainly includes 62% to 69% nickel and 18.81% to 36.5% copper, which has good welding performance and corrosion resistance.
Contact Us
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Customization
This is a series of welding wire products including ERNiCrMo-3, ERNiCrMo-4, ERNiCrMo-13, ERNiCrFe-3, ERNiCrFe-7, ERNiCr-3, ERNiCr-7, ERNiCu-7 and ERNi-1.
Nickel welding wire is available in different grades and specifications depending on specific application requirements. Various nickel alloy welding wires (such as ERNiCr-3, ERNiCrMo-3, etc.) and pure nickel welding wires (such as ERNi-1, ERNi-2, etc.) can be selected according to specific alloy composition and performance requirements.
In short, nickel welding wire is an important welding material with excellent welding performance and adaptability. It plays an important role in various industrial fields, providing reliable welding solutions for manufacturing and maintaining high-quality metal structures.
Q&A
Q: What are the chemical compositions of ERNiCu-7 welding wire?
Answer: The chemical composition of ERNiCu-7 welding wire mainly includes about 62% nickel, about 30% copper, about 3% manganese, about 1% titanium, etc.
Q: What materials are mainly welded with ERNiCu-7 welding wire in marine engineering?
Answer: ERNiCu-7 welding wire is mainly used for welding Monel alloy, Inconel alloy, as well as some stainless steel and carbon steel materials in marine engineering.
Q: What is the welding performance of ERNiCu-7 welding wire?
Answer: ERNiCu-7 welding wire has good welding performance, beautiful weld formation, good plasticity and toughness of the weld metal, and is not prone to welding cracks.
Q: What are the precautions for using ERNiCu-7 welding wire?
Answer: When using ERNiCu-7 welding wire, attention should be paid to controlling welding parameters such as welding current, voltage, and welding speed to ensure the quality of the weld seam; At the same time, the welding area should be kept clean during the welding process to avoid contamination.
Q: Apart from marine engineering, what other fields are ERNiCu-7 welding wires suitable for?
Answer: ERNiCu-7 welding wire is also suitable for welding and repair work in fields such as chemical equipment, oil and gas pipelines, and food processing equipment, due to its excellent corrosion resistance and welding performance.
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