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Precision Grinding Parts

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.


What is Precision Grinding?

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


Why Precision Grinding is Essential for High-Performance Materials

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.


Precision Grinding Capabilities at EadeTech

  • 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


Table 1: Precision Grinding Accuracy & Performance

ParameterCapability
Tolerance±0.002–0.005 mm
Surface roughnessRa 0.2–0.8 μm
Repeatability±0.002 mm
Flatness≤0.003 mm / 300 mm
Parallelism≤0.005 mm

Materials Suitable for Precision Grinding

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.

Table 2: Materials Commonly Ground with Precision Techniques

MaterialHardness RangeTypical Application
Titanium alloys~30–36 HRCAerospace parts
Inconel 718~40–45 HRCTurbine blades
TungstenVery highElectrical contacts
MolybdenumHighHigh-precision electronics
Hardened steel50–65 HRCCutting tools

Typical Precision Grinding Applications

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


Table 3: Industry Applications

IndustryComponentKey Requirement
AerospaceTurbine shaftsDimensional accuracy
MedicalSurgical toolsSurface finish
AutomotiveEngine componentsTight tolerances
IndustrialDie and mold partsWear resistance

Grinding Wheel Selection & Process Control

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.

Table 4: Grinding Wheel Selection for Different Materials

Wheel TypeBest ForApplication
Aluminum oxideSteel, cast ironGeneral precision grinding
CBN (Cubic Boron Nitride)Hardened steelsHigh-precision grinding
DiamondTungsten, ceramicsUltra-hard material grinding
Silicon carbideNon-ferrous metalsTitanium, aluminum

Inspection & Quality Control

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


Table 5: Precision Grinding Inspection Standards

Inspection ItemMethodAcceptance Criteria
Diameter & LengthCMM±0.002–0.005 mm
Surface finishRa testerAs per specifications
RoundnessRoundness tester≤0.002 mm
Thermal damageVisual inspectionNone allowed

Why Choose EadeTech for Precision Grinding

  • 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.


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Addr: Room 302, Building D, COFCO Gonghua Project, Zone 20, Honglang Community, Xin'an Street, Bao'an District, Shenzhen City.

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