High-Precision CNC Machining Equipment
Full-Chain Precision Inspection System
DIN / ISO / AGMA / GB Standard Cross-Reference
| DIN (German Std) | ISO (International) | AGMA (US Std) | GB (Chinese Std) | Gyan Drive Capability |
|---|---|---|---|---|
| DIN 3 | ISO 3 | AGMA 14~15 | GB Class 3 | ✓ Achievable (Grinding) |
| DIN 4 | ISO 4 | AGMA 12~13 | GB Class 4 | ✓ Batch Stable |
| DIN 5 | ISO 5 | AGMA 10~11 | GB Class 5 | ✓ Batch Stable |
| DIN 6 | ISO 6 | AGMA 8~9 | GB Class 6 | ✓ Routinely Achievable |
| DIN 7 | ISO 7 | AGMA 7~8 | GB Class 7 | ✓ Routinely Achievable |
| DIN 8 | ISO 8 | AGMA 7 | GB Class 8 | ✓ Routinely Achievable |
Lower numbers indicate higher precision. Gyan Drive maintains stable batch precision at GB Class 4~5, with gear grinding up to DIN 3.
Multiple Heat Treatment Processes
| Heat Treatment Type | Common Materials | Case Depth | Hardness Range | Suitable Products |
|---|---|---|---|---|
| Carburizing & Quenching | 20CrMnTi, 20CrNiMo, 20CrMo | 0.5~1.5 mm | HRC 58~63 | High-load gears, gear shafts |
| Quenching & Tempering | 40Cr, 42CrMo, 45# Steel | — (Through) | HB 220~320 | Shafts, structural parts, medium-load gears |
| Induction Hardening | 40Cr, 45# Steel, 42CrMo | 1.0~3.0 mm | HRC 45~55 | Local tooth hardening, shaft journals |
| Nitriding | 38CrMoAl, 42CrMo | 0.1~0.5 mm | HV 850~1100 | Precision gears, wear-resistant parts |
Corrosion Protection · Wear Resistance · Finishing
| Treatment | Method | Thickness / Effect | Applicable Materials | Main Purpose |
|---|---|---|---|---|
| Blackening (Black Oxide) | Alkaline / Acid oxidation | 0.5~1.5 μm | Carbon steel, alloy steel | Rust prevention, finishing |
| Zinc Plating | Electro-galvanizing (blue-white/yellow) | 5~15 μm | Carbon steel, alloy steel | Rust prevention, corrosion resistance |
| Dacromet Coating | Dip coating + baking | 6~12 μm | Carbon steel, alloy steel | High corrosion resistance, hydrogen-free |
| Shot Blasting | Steel shot/grit blasting | Surface cleanliness Sa2.5 | Cast steel, alloy steel | Descaling, surface strengthening |
In-Depth Insights on Gear Manufacturing Technology & Processes
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