Sintered Metal Gears
Sintered metal gears are gears manufactured using powder metallurgy technology: metal powder is mixed according to a formula, pressed into the approximate shape of the gear in a mold, and then sintered at high temperature to combine the powder particles into a dense metal matrix. Finally, the finished product is obtained through necessary finishing, heat treatment, and other processes.
- Product Introduction
Product Details
|
Commodity |
Factory customized high precision strong wear resistance sintered metal gears |
| Modular range | 0.1-2.0mm |
| Number of teeth range | 10-100 teeth |
| Outer diameter tolerance | ±0.01mm - ±0.03mm |
| Tooth surface roughness | Ra0.8-Ra3.2μm |
| Density | 6.0-7.2g/cm³ ( iron based ) |
| Tensile strength | 300-800MPa |
Production Process
1. Powder preparation: Select the type and particle size of metal powder according to performance requirements, add binders and lubricants
2. Compression molding: The powder is pressed into gear blanks that are close to the final shape through a mold on a dedicated press machine
3. Sintering densification: Heat in a protective atmosphere furnace to 70% -80% of the melting point of the metal, allowing the powder particles to diffuse and bond
4. Post processing: including finishing (improving dimensional accuracy), heat treatment (enhancing hardness), oil immersion (improving lubricity), etc .
Core Strengths
• Cost controllable: Suitable for large-scale production, requiring no or only a small amount of cutting after molding, which can significantly reduce material waste and processing costs .
• Stable accuracy: The mold forming method can ensure the dimensional consistency of gears in the same batch, and the accuracy can reach IT7-IT9 levels .
• Flexible materials: Different powder materials such as iron-based, copper based, stainless steel, etc. can be adjusted according to demand, and self-lubricating components such as graphite can also be added .
• Integrated structure: It can directly form gears with complex structures such as wheel hubs, bosses, and oil holes, reducing assembly processes .
Comparison Table of Different Gear Performance
| Material Type | Density Range (g/cm ³) | Hardness Range (HB) | Tensile Strength (MPa) | Self-lubricating Property | Corrosion Resistance | Applicable Scenarios | Cost |
| Iron-based sintered materials | 6.0-7.2 | 50-250 | 100-800 | General | General | Automobile gearbox, electric tool gear | Medium-Low |
| Copper based sintered materials | 6.0-8.0 | 40-120 | 80-300 | Good | Better | Home appliance reducers, office equipment gears | Medium |
| Stainless steel sintered material | 6.5-7.8 | 80-200 | 200-600 | General | Excellent | Food machinery, outdoor equipment gears | High |
| Oil containing sintered materials | 5.5-7.0 | 40-180 | 80-500 | Excellent | General | Transmission gears in non lubricated/low oil environments | Medium |
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