Stainless Steel Precision Casting Mirror-Polished Glass Fixtures
Introduction
Stainless steel precision casting mirror-polished glass fixtures represent the pinnacle of manufacturing technology for optical and precision engineering applications. These components combine advanced metallurgical techniques with superior surface finishing to create fixtures that meet the most demanding requirements in semiconductor, photonics, and high-end optical industries.
Manufacturing Process
Precision Investment Casting
Utilizing the lost-wax casting method, we achieve dimensional tolerances within ±0.1mm for complex geometries. The process begins with 3D-printed wax patterns dipped in ceramic slurry, followed by high-temperature burnout and molten stainless steel pouring (typically 316L or 17-4PH grades).
Surface Treatment
Post-casting treatments include:
Electrolytic polishing for macro-level smoothing
Diamond abrasive polishing (from 400# to 3000# grit progression)
Final mirror polishing with 0.5μm diamond paste
Surface roughness achieves Ra ≤ 0.025μm (10μin) meeting ISO 12167-1 standards.
Technical Specifications
ParameterSpecificationMaterial Grade316L/17-4PH Stainless SteelDimensional Tolerance±0.05-0.1mmSurface RoughnessRa ≤ 0.025μmFlatness≤ 0.02mm/mLoad Capacity50-200kg (design dependent)
Applications
Semiconductor wafer handling systems
Optical lens mounting assemblies
Photolithography equipment components
Laboratory-grade measurement fixtures
Cleanroom-compatible positioning devices
Quality Assurance
All fixtures undergo:
Coordinate Measuring Machine (CMM) verification
White light interferometry for surface analysis
Cleanliness testing per IEST-STD-CC1246D
Corrosion resistance testing (ASTM G48 Method A)
Conclusion
These mirror-polished fixtures provide unparalleled stability and precision for glass handling applications where minimal particulate generation and maximum dimensional stability are critical. The combination of precision casting and advanced polishing techniques creates components with both functional excellence and aesthetic perfection.
