Cold press cup wheel core
Core Features
· Cold Pressing Process Advantage
Formed under 100-300MPa high pressure without high-temperature sintering, the substrate density reaches ≥7.8g/cm³ with uniform structure and no pores, avoiding coarse grains in traditional sintering and improving wear resistance by 40%.
· High-strength Material System
Made of Fe-Cu-Ni alloy powder or 45# steel blanks, cold-pressed and aged to HRC 45-50, with compressive strength ≥1200MPa and impact toughness αk≥40J/cm², resisting high-frequency impact grinding.
· Precision Structural Design
· Dimension Accuracy: Outer diameter 80-250mm, thickness 2-6mm, center hole tolerance ±0.01mm, compatible with high-precision grinder spindles;
· Balance Design: Five-axis dynamic balance ensures residual unbalance ≤3g·cm, vibration amplitude ≤0.02mm at high speeds;
· Heat Dissipation: Embedded copper cooling mesh and spiral grooves keep grinding temperature below 80℃, maintaining abrasive performance.
Application Scenarios
· Precision Metal Machining: Polishing aerospace aluminum/titanium alloy parts on CNC grinders, achieving surface roughness Ra≤0.8μm;
· Gem & Ceramic Processing: As diamond wheel substrate for jade/ceramic fine grinding, with processing accuracy ±0.05mm;
· Electronic Component Machining: Thinning silicon wafers and sapphire substrates, with substrate deformation ≤0.03% for semiconductor cleanliness requirements.
Technical Parameters
Parameter Type | Specific Indicators |
Substrate Material | Fe-Cu-Ni Alloy Powder / 45# Steel |
Forming Process | Cold Pressing (100-300MPa) + Aging Treatment |
Density | ≥7.8g/cm³ |
Outer Diameter Range | 80-250mm (Common sizes: 100mm/150mm/200mm) |
Thickness Range | 2-6mm (Customized for wheel models) |
Hole Diameter Tolerance | ±0.01mm |
Maximum Rotation Speed | 8000rpm (Dynamic balance grade G2.5) |
Applicable Abrasives | Diamond Powder, CBN, Alumina Ceramic Abrasives, etc. |
Product Advantages
· Low Heat Generation: Cold pressing avoids thermal stress, with thermal deformation ≤0.01mm, ideal for precision machining;
· Long Service Life: Over 100,000 fatigue cycles (50% longer than sintered substrates), reducing replacement costs;
· High-precision Adaptation: Axial runout ≤0.03mm, radial runout ≤0.02mm, ensuring grinding trajectory accuracy;
· Eco-friendly Process: No exhaust emission, compliant with ISO 14001, suitable for green manufacturing.

