The vitrified bond SG worm grinding wheel is an advanced abrasive tool specifically designed for high-precision worm gear grinding processes. It utilizes SG (Seeded Gel) superabrasive grains and high-performance vitrified bond, offering exceptional wear resistance and thermal stability. This product is ideal for efficiently finishing hardened gear tooth surfaces, including hardened gears, precision worms, and reducer gears, delivering superior surface quality with minimal grinding burn risk.
Key Features
1. SG abrasive grain + Vitrified Bond
- SG Abrasive (Seeded Gel Abrasive):
- Sharper and more durable than conventional alumina abrasives, extending service life by 30%~50%.
- Excellent self-sharpening properties reduce dressing frequency and improve machining efficiency.
- Vitrified Bond:
- High rigidity ensures stability during high-speed grinding (peripheral speed up to 80m/s).
- Outstanding heat resistance minimizes thermal impact on workpieces, reducing burn risks.
2. Optimized Pore Structure
- Controlled porosity technology enhances heat dissipation and chip evacuation, suitable for prolonged continuous operation.
3. High Precision Tooth Profile Retention
- Superior wheel profile stability ensures gear tooth accuracy (DIN 3962 Class 4 or higher) and surface finish (Ra ≤ 0.4μm).
Technical Specifications
| Parameter | Range | Recommended (Typical Use) |
|---|---|---|
| Outer Diameter (OD) | Φ100mm – Φ500mm | Φ350mm |
| Inner Diameter (ID) | φ32mm – φ160mm | φ127mm |
| Thickness | 20mm – 200mm | 100mm |
| Grit Size | 120# – 400# | 180# (Fine Grinding) |
| Peripheral Speed | 30m/s – 80m/s | 60m/s (High-Speed Grinding) |
| Suitable Module | 0.5mm – 10mm | 2mm – 6mm (Automotive Gears) |
Typical Applications
1. Automotive Transmission Gear Finishing
- Ideal for grinding 20CrMnTi, 16MnCr5 carburized and hardened gears, ensuring ISO Class 6 accuracy.
2. Industrial Reducer Worm Machining
- Consistently processes 40Cr, 42CrMo alloy steel worms with surface roughness ≤ Ra 0.6μm.
3. Aerospace Gear Precision Grinding
- Meets high-precision, low-damage grinding requirements for high-strength alloy gears (e.g., 18CrNiMo7-6).
Performance Comparison (SG vs Conventional Alumina Wheels)
| Performance Metric | SG Worm Grinding Wheel | Standard Alumina Wheel |
|---|---|---|
| Grinding Efficiency | High (Less dressing) | Moderate |
| Service Life | Long (+30%~50% wear life) | Shorter |
| Surface Finish | Ra ≤ 0.4μm (Better) | Ra 0.6~0.8μm |
| Thermal Impact | Low (Heat-resistant bond) | Higher (Burn-prone) |
Customization & Services
1. Non-Standard Customization
- Adjustable grit size, porosity, and bond formulation to match specific needs (e.g., higher speeds or tighter tolerances).
