Specific application scenarios of granite countertops (commonly referred to as marble countertops in the industry) in the full process of chip manufacturingNote: The “marble countertops” mentioned in the semiconductor industry are all black precision granite. Ordinary calcium carbonate marble is corrosion-resistant and has poor precision, so it is not used in chip production lines; all…
The Outstanding Application of Granite (Precision Marble Tabletop) in Chip Manufacturing I. Distinction First: The semiconductor industry does not use ordinary marble, but black precision granite.The industry commonly refers to it as “marble tabletop,” but in reality, all chip equipment uses natural black granite (Jinan Green, Indian Black, Basalt), rather than ordinary marble (calcium carbonate…
Complete Applications of Granite Precision Bases in the Semiconductor IndustryI. Core Material Advantages of Granite Bases in Semiconductor ManufacturingSemiconductor manufacturing processes reach nanometer-level precision, requiring extreme standards for thermal deformation, vibration, flatness, and cleanroom compatibility of the base. Natural black granite (Jinan Green / Indian Black) is the optimal alternative to metal, cast iron, and…
Specific Manifestations of Granite Platform Wear Resistance I. Inherent Wear Resistance of the MaterialHigh Mohs HardnessHigh-quality precision granite (Jinan Green / Zhangqiu Black) has a Mohs hardness of 6–7, higher than cast iron, ordinary steel, aluminum, and Invar.Cast iron hardness is about 3–4 HRC, and steel is 5–6 HRC;Probes, steel fixtures, and workpieces can be…
Core key advantages of granite as a CMM platform base: I. Excellent thermal stability, suppressing dimensional drift caused by temperature changesThe linear thermal expansion coefficient is stable (4.5~6×10⁻⁶/℃), far lower than steel, cast iron, and aluminum alloys. The deformation caused by small ambient temperature fluctuations is extremely minimal, reducing the pressure of temperature compensation for…
Full Calibration Standards for Flatness and Parallelism of Granite (Stone) Surface Plates I. Core Execution Standards (Currently Effective in China) II. Flatness Standards (Core Tolerances Calculation Formulas) Table Grade Coefficient K Typical Application Scenarios Grade 0 4 CMM, precision instruments, optical references Grade 1 8 Molds, precision machining inspection Grade 2 16 General machining, fitter…
High-precision marble platforms empower precision inspection and mold machining I. Core material advantages of marble (granite) platforms, suitable for precision mold and inspection scenariosIn the industry, the “marble” referred to in high-precision inspection platforms is actually dense granite (Jinan Green, diabase), which is the preferred reference carrier for mold machining and metrology inspection. Compared to…
Precise Measurement and Quality Control of Precision Granite PlatesPrecision granite (granite stone) plates serve as the reference plane for metrology, CMM, optical inspection, and precision assembly. Core control is divided into six major modules: raw material quality control, full-process manufacturing quality control, high-precision finished product measurement, factory verification, in-service periodic calibration, and usage/maintenance quality control….
Why granite machine beds are preferred for improving machine tool precision and performance (compared to cast iron / steel beds)To achieve high precision and stability, machine tools must address four core pain points: vibration, thermal deformation, long-term deformation, and wear/corrosion. Granite perfectly compensates for the shortcomings of metal beds. The core logic is explained below….
Granite platforms / bases have become an indispensable core requirement for high-tech manufacturing for the following reasonsHigh-end manufacturing (semiconductor lithography, CMM, ultra-precision machining, optical inspection, aerospace metrology) demands extremely strict long-term stability of nano/micronlevel reference bases. Cast iron, steel, and resin concrete all have inherent shortcomings; relying on a natural mineral structure formed over billions…
