From Deep Mountain Quarries → Dust-free Precision Workshop
Precision Granite Platform · Complete Life Journey
Station 1: Deep Mountain Mine · Raw Stone Extraction
Selected high-density Jinan Black Granite, billion-year-old natural rock strata, uniform texture, crack-free, low expansion, extremely high hardness
Diamond wire saws cut large blocks of rough stone to avoid blasting-induced internal cracks
Preliminary flaw detection of raw stone to eliminate impurities, layers, fissures, and loose materials
Large rough blocks are transferred out of the factory and enter the natural stress aging warehouse
Station 2: Long-term Outdoor Natural Aging (The Soul Step of Precision)
Rough blocks are stacked outdoors, exposed to sun, rain, and seasonal temperature differences
Duration: 18~24 months, thoroughly releasing the rock’s original massive internal stress
Eliminates slow deformation and precision drift after processing and installation
Unstable stones crack or delaminate on their own during this stage and are eliminated early
Station 3: Plate Rough Machining & Shaping Cutting
Bridge saws cut the stone into standard plate blanks according to specifications
Diamond tools rough grind the six faces, deburring and chamfering to prevent chipping
Reserve sufficient material for finishing, drill holes, cut slots, and install steel bushings for preliminary shaping
Enter the constant temperature warehouse for a second aging period of over 30 days
Station 4: CNC Precision Grinding
Enter the constant temperature processing workshop for CNC diamond wheel surface grinding
Mill T-slots, positioning holes, counterbored holes, and guide rail reference surfaces
Control parallelism, perpendicularity, and dimensional accuracy, removing most height errors
Stress is released again after processing to prevent deformation from machining pressure
Station 5: Dust-free Constant Temperature Workshop · Multi-level Fine Grinding
Strict environment: 20±0.5℃, dust-free, wind-free, vibration-free
Semi-fine grinding → Fine grinding → Ultimate manual lapping
Cross-grinding to achieve a mirror finish, eliminating microscopic unevenness
Gradually improve flatness to reach ultra-high 000/00 grade precision
Station 6: Full-dimensional High Precision Inspection
Electronic level checks flatness along diagonals and grid patterns
Laser interferometer scans 3D form and position errors
Optical flats check local microscopic flatness
Issue national metrology grade certificates: flatness, parallelism, perpendicularity
Station 7: Constant Temperature Static Stability Re-inspection
Finished platform is placed in a constant temperature environment for 72 hours without movement
Precision is re-measured; no rebound or warping is allowed for qualification
Surface is treated with micro-pore sealing protection against dirt, moisture, and seepage
Station 8: Factory Shipment On-site Installation & Commissioning
Shockproof wooden crates with soft padding protection; strictly prohibit bumps and collisions
Three-point static support installation on site with anti-vibration foundation leveling
On-site calibration and leveling; compatible with CMMs, inspection fixtures, and machine tool bases
Delivered for use, entering the long-term precision maintenance cycle
Station 9: Workshop Service · Lifetime Precision Cycle
Daily usage inspection → Regular constant temperature calibration
Minor scratches re-lapped → Aged platforms returned to factory for complete overhaul
Maintains a stable reference for decades, rust-proof, deformation-proof, and non-magnetic
