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I. Basic Material Requirements (Ensure the stone itself first)Stone: Jinan Green (G3701), Zhangqiu Black, or equivalent high-density fine-grain graniteDensity: ≥3.0 g/cm³ (High-precision platform ≥3.2)Water Absorption: ≤0.25% (Precision grade ≤0.05%)Hardness: Mohs hardness ≥6, working surface ≥70HSStructure: Crack-free, no sand holes, no slag inclusions, no weathering layer, biotite content <5% II. Working Surface Processing (Most critical, applicable…

When selecting oil to coat a granite base, the core principles are “protection firs, no damage, easy cleaning.” Selection must consider the base’s purpose (precision measurement/ordinary tooling) and transportation environment (humid/dry), focusing on avoiding corrosion, residuees affecting subsequent use. Specific selection methods and recommendations are as follows: I. Core Oil Selection Standards (Must Read) II….

The core of oiling is “thin, uniform, no omissions, no residue.” It is essential to form an effective protective film while avoiding thick application that causes sticking, residual contamination, or affecting subsequent installation and use. The specific steps and details are as follows, applicable to all recommended oils (specialized protective oil, industrial white oil, emergency…

High-Precision CMM WorktableWhy Premium Precision Granite (Jinan Qing) is the First ChoiceExtremely long-term dimensionay, virtually permanent deformation resistanceNatural granite has undergone natural aging over hundreds of millions of years, completely releasing internal stresses. Unlike cast iron or steel, it does not cr, deform, or age over time, perfectly matching the high-precision reference requirements of CMMs.Extremely…

Laser Interferometer Dedicated for Granite Platforms | Comprehensive Selection Guide (Universal fo Grade 000/00/0)Select based on 5 core dimensions: platform accuracy grade, table size, workshop environment, inspection items, and national standard traceability. Directly matches ite flatness / straightness / perpendicularity 3D inspection. I. Determine the Core First: Single-Frequency vs. Dual-Frequency Laser (Must Choose Dual-Fy) II….

From Deep Mountain Quarries → Dust-free Precision WorkshopPrecision Granite Platform · Complete Life Journey Station 1: Deep Mountain Mine · Raw Stone ExtractionSelected high-density Jinan Black Granite, billion-year-old natural rock strata, uniform texture, crack-free, low expansion, extremely high hardnessDiamond wire saws cut large blocks of rough stone to avoid blasting-induced internal cracksPreliminary flaw detection of…

Laser Interferometer Inspection of Granite Platform Flatness: Easy-to-Understand Principles I. Core PrincipleUtilizing the extremely high stability of laser wavelength, it precisely calculates the deviation of height undulations at every point on the platform through changes in interference fringes caused by optical path differences, and three-dimensionally fits the true flatness.The laser wavelength itself serves as a…

Granite Platform Flatness & Geometric Precision Comprehensive Testing Methods (Factory Practical Operations National Standard Verification)In accordance with JJG117-2013 Plate Verification Regulations, common testing methods for precision granite platforms are divided into: Traditional Level Method, Autocollimator Method, Laser Interferometry Method, Grid Point Testing, Optical Flat Interference Method, and CMM Comprehensive Testing. I. Electronic Level Testing Method…

Precision Granite Platform / Component Full-Process Manufacturing Solution (National StandardGrade 000/00/0 · Dedicated for Semiconductor / CMM / Optical Benchmarks)Covers the full closed-loop process from material selection → aging → CNC machining → constant temperature manual precion lapping → structural customization → precision verification → installation and after-sales → long-term stability. Suitable for aviation, semiconductors,…

Granite Platform Precision Degradation | Common Causes Radical SolutionsGranite (Marbrm precision drift, flatness exceeding tolerance, is fundamentally categorized into six major types: environment, installation support, usage damage, cleaning maintenance, stress aging, and metrological calibrubleshooting in order of priority can quickly restore precision. I. Abnormal Ambient Temperature (Most Common Hidden Error)Causes:Room temperature deviates from the stadard…