Product Introduction
Z308 ENi-CI Cast Iron Electrode: Premium Nickel-Based Welding Solution
Z308 ENi-CI Cast Iron Electrode is a high-quality nickel-based welding electrode specifically designed for cold welding of cast iron. With a nickel content of ≥90%, this electrode provides excellent crack resistance and machinability, making it ideal for repairing and joining all grades of cast iron components.
Developed by Hangzhou Linan Dayang Welding Material Co., Ltd., a leading manufacturer with 20 years of experience in welding consumables, this electrode offers superior performance compared to conventional cast iron welding electrodes. Its unique formulation ensures minimal dilution with the base metal, reducing the risk of cracking and improving post-weld machining properties.
Chemical Composition of Deposited Metal (%)
| Element | Content (%) | Function |
| C | ≤2.0 | Controls hardness and improves machinability |
| Ni | ≥90.0 | Ensures weld toughness and prevents cracking |
| Mn | ≤1.0 | Deoxidizes and desulfurizes, improving fluidity |
| Si | ≤2.50 | Enhances weld pool stability |
| S | ≤0.03 | Reduces hot cracking sensitivity |
| Fe | ≤8.0 | Controls base metal compatibility |
Application
Z308 ENi-CI Cast Iron Electrode is suitable for welding and repairing various cast iron components across multiple industries:
- Automotive Industry: Engine blocks, cylinder heads, gearboxes, and transmission cases
- Heavy Machinery: Hydraulic pump housings, gear housings, and bearing seats
- Pipe Systems: Cast iron valves, flanges, and pipe connections
- Agricultural Equipment: Tractor gearboxes, harvester components, and irrigation system parts
- Industrial Machinery: Machine tool beds, press frames, and industrial pump components
Welding Procedure
- Preparation
Clean the welding area thoroughly to remove oil, grease, rust, and paint
Preheat the workpiece if necessary (recommended for thick sections or high-carbon cast iron)
Bake the electrodes at 80-120°C for 1 hour before use
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Welding Parameters
Current: 90-120A (AC or DC+)
Arc Voltage: 22-26V
Travel Speed: 100-150mm/min
Electrode Extension: 15-20mm
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Post-Welding
Hammer the weld seam lightly to relieve residual stresses
Allow the workpiece to cool slowly in still air
Avoid rapid cooling to prevent cracking
Machining can be performed after complete cooling
Product Features
- High Nickel Content: ≥90% nickel ensures excellent compatibility with cast iron
- Crack Resistance: Superior resistance to hot and cold cracking
- Machinability: Weld metal can be easily machined to match base metal properties
- Certifications: ISO 9001:2008, CE, and SGS certified
- Versatility: Suitable for all grades of cast iron, including gray iron, ductile iron, and malleable iron
- OEM Service: Custom packaging and private label options available
Packaging
Standard packaging: 5kgs/pvc box; 4 inner boxes/carton; 50 cartons/pallet
Custom packaging available upon request
Shelf life: 2 years under proper storage conditions (dry, ventilated area)
FAQ
Q: What is the difference between Z308 and ordinary cast iron electrodes?
A: Z308 is a pure nickel-based electrode with ≥90% nickel content, providing superior crack resistance and machinability compared to ordinary electrodes with lower nickel content or iron-based formulations.
Q: Do I need to preheat the workpiece before welding with Z308?
A: Preheating is generally not required for thin sections, but for thick sections (>10mm) or high-carbon cast iron, preheating to 200-300°C is recommended to reduce stress and prevent cracking.
Q: What is the recommended post-weld treatment?
A: Light hammering of the weld seam immediately after welding helps relieve stresses. Allow the workpiece to cool slowly in still air. Post-weld heat treatment is not typically required but can be performed for critical applications.
Q: Can Z308 be used for welding cast iron to steel?
A: Yes, Z308 is suitable for welding cast iron to mild steel, providing a strong, crack-resistant joint.
Q: What is the shelf life of Z308 electrodes?
A: When stored properly in a dry, ventilated area, Z308 electrodes have a shelf life of 2 years. If electrodes absorb moisture, they should be re-baked at 80-120°C for 1 hour before use.
About Us
Hangzhou Linan Dayang Welding Material Co., Ltd. is a leading manufacturer of welding consumables in China with 20 years of experience. Our professional production team and technical experts are dedicated to providing high-quality welding electrodes, welding wires, and other welding materials.
We have a complete quality control system and advanced production equipment, ensuring that our products meet international standards. Our products are exported to more than 30 countries and regions worldwide, enjoying a good reputation among customers.
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