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Thông tin chi tiết sản phẩm:
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| Process Step | Key Points | Description |
|---|---|---|
| Raw material preparation | Ultra-fine high-purity SiC powder | Synthetic SiC is ground into an ultra-fine, high-purity powder |
| Mixing and batching | Addition of sintering aids | Sintering aids reduce the temperature required for densification, enabling pressureless sintering |
| Ball blank forming | Rolling forming | Rough ball blanks of the required dimensions are produced |
| Sintering | High-temperature pressureless sintering | Sintering is carried out at 1950–2150 °C in a non‑oxidizing atmosphere under normal pressure |
| Cooling and finishing | Natural cooling | After natural cooling, finishing is performed if necessary to obtain the finished grinding balls |
| Property | Value | Remarks |
|---|---|---|
| Density | >3.15 g/cm³ | Lower than that of alumina and zirconia, beneficial for low energy consumption |
| Vickers hardness | 2000–2500 HV | Mohs hardness 9.5, extremely low wear rate |
| Fracture toughness | 3.0–4.0 MPa·m¹/² | Very high hardness but limited toughness; avoid severe impact |
| Maximum service temperature | 1600 °C | Excellent high‑temperature stability |
| Wear resistance | Wear rate 0.05–0.10‰/5 h | Suitable for long‑duration continuous grinding |
| Color | Black | Easy to identify |
| Parameter | Pressureless Sintered SiC Ball | Alumina Ball (99%) | Zirconia Ball |
|---|---|---|---|
| Density (g/cm³) | 3.15–3.2 | 3.95 | 6.0 |
| Mohs hardness | 9.5 | 9 | 8.5–9 |
| Vickers hardness (HV) | 2000–2500 | 1800 | 1200–1600 |
| Max. service temperature (°C) | 1600 | 1000 | 400 |
| Wear resistance | Excellent | Good | Excellent |
| Impact toughness | Low | Medium | Relatively high |
| Cost | High | Low | Medium to high |
| Typical application | Ultra‑hard material grinding | Fine grinding, general use | Balancing hardness and toughness |
Người liên hệ: Ms. Yuki
Tel: 8615517781293
Vietnamese
