Precision grinding is an essential finishing process that ensures exceptional surface finish, dimensional accuracy, and smooth edges for parts that require high precision. When it comes to critical components in aerospace, medical, automotive, and industrial applications, the importance of precision grinding cannot be overstated.
At EadeTech, we specialize in precision grinding for titanium alloys, nickel-based superalloys, hardened steels, tungsten, molybdenum, and other hard-to-machine materials, providing the necessary tolerances and finishes for high-performance, small-batch components.
Precision grinding involves using an abrasive wheel to remove material from a workpiece while achieving tight tolerances, high surface quality, and minimal material loss. Unlike other machining methods, precision grinding is particularly effective for achieving fine finishes and small deviations in part dimensions after heat treatment or other machining processes.
Key benefits of precision grinding include:
Ultra-tight dimensional control
Superior surface finishes
Ability to grind hard, brittle materials
High repeatability and consistency
Specialty materials often exhibit challenges such as:
Work hardening that leads to rough surfaces
Dimensional changes after heat treatment
Tight geometric requirements for critical parts
Precision grinding allows for low-force material removal, reducing the risks of heat-affected zones and stress-induced distortions. This is especially important when working with high-performance alloys where minimal thermal distortion and dimensional stability are paramount.
Grinding diameter: Ø300 mm
Grinding length: Up to 800 mm
Thickness tolerance: ±0.002 – ±0.005 mm
Surface roughness: Ra 0.2 – 0.8 μm
Finish types: Flat, cylindrical, and profile grinding
Grinding wheel types: Aluminum oxide, CBN, diamond, and silicon carbide
| Parameter | Capability |
|---|---|
| Tolerance | ±0.002–0.005 mm |
| Surface roughness | Ra 0.2–0.8 μm |
| Repeatability | ±0.002 mm |
| Flatness | ≤0.003 mm / 300 mm |
| Parallelism | ≤0.005 mm |
Precision grinding is ideal for tough and heat-resistant materials that demand high precision after heat treatment or machining. These materials often require special care to avoid warping, cracking, or excessive tool wear.
| Material | Hardness Range | Typical Application |
|---|---|---|
| Titanium alloys | ~30–36 HRC | Aerospace parts |
| Inconel 718 | ~40–45 HRC | Turbine blades |
| Tungsten | Very high | Electrical contacts |
| Molybdenum | High | High-precision electronics |
| Hardened steel | 50–65 HRC | Cutting tools |
Precision grinding is widely used for the following applications:
Aerospace components: Landing gear, turbine blades, shafts
Medical implants: Orthopedic devices, surgical instruments
Automotive parts: Valve seats, camshafts, and gears
Industrial tooling: Dies, molds, and punches
Precision spindles and bearings
| Industry | Component | Key Requirement |
|---|---|---|
| Aerospace | Turbine shafts | Dimensional accuracy |
| Medical | Surgical tools | Surface finish |
| Automotive | Engine components | Tight tolerances |
| Industrial | Die and mold parts | Wear resistance |
Selecting the correct grinding wheel is crucial for the performance and finish of the part. The choice of abrasive material, grit size, and bond type must align with the material's properties and the desired results.
| Wheel Type | Best For | Application |
|---|---|---|
| Aluminum oxide | Steel, cast iron | General precision grinding |
| CBN (Cubic Boron Nitride) | Hardened steels | High-precision grinding |
| Diamond | Tungsten, ceramics | Ultra-hard material grinding |
| Silicon carbide | Non-ferrous metals | Titanium, aluminum |
At EadeTech, quality control is a top priority. Each precision-ground part undergoes rigorous inspection to ensure it meets the required tolerances and surface finish. This includes:
CMM (Coordinate Measuring Machine) checks for dimensional accuracy
Surface roughness testing for smooth finishes
Roundness and concentricity verification
Visual inspection to detect cracks, burns, or other defects
| Inspection Item | Method | Acceptance Criteria |
|---|---|---|
| Diameter & Length | CMM | ±0.002–0.005 mm |
| Surface finish | Ra tester | As per specifications |
| Roundness | Roundness tester | ≤0.002 mm |
| Thermal damage | Visual inspection | None allowed |
Expertise in hard-to-machine alloys: We specialize in titanium, superalloys, and other demanding materials.
Micron-level accuracy: We guarantee tight tolerances and repeatability for critical parts.
High-quality standards: Every part undergoes rigorous inspection before delivery.
Integrated solutions: Seamless integration with other machining and finishing processes.
For more information, visit https://www.eadetech.com.
Whatsapp: +8618998453346
Phone: +8618998453346
Tel: +8618998453346
Email: [email protected]
Addr: Room 302, Building D, COFCO Gonghua Project, Zone 20, Honglang Community, Xin'an Street, Bao'an District, Shenzhen City.