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Technical Features and Specifications
Forged blanks are characterized by high material density and uniform response to heat treatment.
| Feature | Detail |
|---|---|
| Materials | 18CrNiMo7-6, 8620, 4340, 4140. |
| Process | Upset forging or rolled-ring forging. |
| Isothermal Annealing | Ensures a uniform structure for high-speed machining. |
By utilizing "upset forging," we compress the metal to refine the center of the blank, ensuring that when the center is bored out, the remaining material is perfectly sound. This eliminates "pitting" and "spalling" issues that often plague gears made from inferior cast or bar-stock materials.
Corporate Culture and Development Philosophy
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Development Conceptscientific and technological innovation as the driving force. -
Quality PolicyPeople, integrity, truth-seeking, innovation -
Core ValueCommon development to achieve symbiosis and win-win.
Buying Tips for Gear Manufacturers
- Near-Net Shape: Ask for "Step Forgings" to reduce the volume of metal your hobbing machines need to remove, saving tool life and time.
- Hardenability (Jominy Test): Request Jominy test data to ensure the alloy will respond predictably to your final case-hardening process.
- Ultrasonic Cleanliness: For high-speed gears, specify "Vacuum Degassed" steel to ensure no microscopic gas pockets exist in the tooth zone.
Advantages of Forged Blanks
| Advantage | Operational Benefit |
|---|---|
| Tooth Strength | Radial grain flow increases bending strength by up to 25%. |
| Machining Stability | Forged parts are less likely to "distort" during final heat treatment. |
| Reliability | Lower risk of catastrophic gear failure in the field. |
Primary Applications
| Sector | Usage Context |
|---|---|
| Automotive | Heavy truck and off-road vehicle transmissions. |
| Industrial Drives | Main drive gears for mills, kilns, and conveyors. |
| Marine | Reduction gears for large ship propulsion systems. |
- Q: Can you forge gear blanks with pre-formed teeth?
- A: For small gears, yes (cold/warm forging). For the large industrial gears we specialize in, we provide the "blank" which is then hobbed for maximum precision.
