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On site installation and grinding of granite platform

On site installation and grinding of granite platform

On-Site Installation and Grinding of Granite Platform 1.Installation Process Site Preparation Ensure a stable foundation(concrete base with vibration isolation if needed) Levelness ......

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On-Site Installation and Grinding of Granite Platform

1.Installation Process

Site Preparation

Ensure a stable foundation(concrete base with vibration isolation if needed)

Levelness tolerance:≤0.05mm/m before installation

Handling&Positioning

Use vacuum lifters or crane with nylon slings to prevent edge damage

Positioning accuracy:±1mm for initial placement

Fine Adjustment

Adjust with precision leveling feet(micrometer-grade)

Final levelness:≤0.01mm/m(Grade AA standard)

2.On-Site Grinding&Calibration

Equipment Used

Planetary grinding machine(e.g.,GMTK-300)with diamond abrasive wheels(grit#200-#3000)

Electronic level(0.001mm/m resolution)+laser interferometer(for ultra-precision validation)

Grinding Steps

Rough grinding:Remove 0.1-0.3mm with#200-#400 grit(flatness improvement)

Fine grinding:#800-#1500 grit for Ra 0.4-0.8μm surface finish

Polishing:#3000 grit+oxide slurry for Ra≤0.1μm(optical-grade finish)

Quality Validation

Flatness testing:Diagonal measurement with autocollimator(≤3μm/m)

Surface roughness:Contact profilometer(Perthometer)verification

3.Key Technical Considerations

Thermal Stability

Maintain workshop at 20±1°C during grinding to prevent thermal distortion

Granite’s CTE:4.5×10⁻⁶/°C–requires temperature-controlled environment

Stress Relief

Post-installation 48-hour stabilization before final calibration

Vibration isolation pads(40-60 Shore hardness)for long-term stability

4.Industry Applications

Metrology Labs:Coordinate measuring machine(CMM)bases(ISO 8512-3 compliant)

Semiconductor:Lithography machine foundations(≤0.005mm/m vibration tolerance)

Precision Engineering:Optical assembly platforms(λ/20 flatness for laser systems)


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