Precision 18CrNiMo7-6 Open Die Forgings Customizable Open Forging Process For Umbrella Gears
Precision 18CrNiMo7-6 Open Die Forgings for Wind Power Sun Gear Transmission
These precision open die forgings are manufactured from high-grade 18CrNiMo7-6 alloy steel, renowned for its excellent hardenability, wear resistance, and core toughness—making it ideal for high-load and long-life gear transmission systems in wind turbines.
Forged using hydraulic hammers and controlled thermal processes, each component features a refined grain structure and enhanced internal integrity. The open die forging process supports large-diameter gear blanks with complex geometries while ensuring mechanical uniformity across critical sections.
Key Features
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High-Performance Alloy Steel: Forged from 18CrNiMo7-6, known for excellent hardenability, wear resistance, and strength—ideal for critical rotating parts in wind power systems.
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Open Die Forging Process: Hydraulic hammers (5T–12T) enable precise forging of large gear blanks, ensuring uniform grain flow and low porosity.
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Enhanced Structural Integrity: Forging ratio ≥ 3.0 helps refine grain structure and improve fatigue resistance under fluctuating loads.
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Machining-Ready Quality: Excellent dimensional stability and machinability for downstream gear hobbing, shaping, and grinding.
Application Areas
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Main Gear Drives in Wind Turbine Gearboxes: Suitable for high-torque, high-speed transmission systems in both onshore and offshore turbines.
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Yaw and Pitch Drive Systems: Used in control gear assemblies that operate under frequent directional changes and load cycles.
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Renewable Power Installations: Designed for long-life, low-maintenance performance in variable environments, including coastal and extreme climate regions.
| Item | Details |
|---|---|
| Product Name | Precision 18CrNiMo7-6 Open Die Forgings for Wind Power Gear Transmission |
| Material Grades | - 18CrNiMo7-6 alloy steel engineered for high strength, hardenability, and wear resistance in rotating gear components- Composition optimized for wind turbine gearbox performance |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T- Supports open die forging of large gear blanks with precision control |
| Manufacturing Process | Raw Material Inspection → Preheating → Open Die Forging → Heat Treatment → Rough Machining → Non-Destructive Testing → Finish Machining (if needed) → Dimensional Inspection → Packaging → Delivery |
| Forging Ratio | ≥ 3.0 — Ensures refined grain structure, high fatigue strength, and directional flow for long-life gear transmission under variable wind loads |
| Applications | - Gear blanks and preforms for main wind turbine gearboxes- Yaw and pitch transmission components in wind energy systems- Suitable for high-torque, cyclically loaded drivetrain assemblies in both onshore and offshore turbines |
| Delivery Conditions | - Normalizing + Tempering to enhance toughness, stabilize structure, and ensure dimensional consistency under hydraulic pressure - Optional soft annealing for improved machinability based on downstream processing requirements |
| Testing & Inspection | - Chemical Composition Analysis via Spectrometry- Mechanical Tests: Tensile, Impact, Hardness- Non-Destructive Testing: UT, MT- Dimensional accuracy and surface geometry verified by precision gear metrology tools |
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