Marble And Granite Platforms: Essential Tools for Industrial Production And Experimental Measurement

Formal Introduction to Marble/Granite Platforms: Fundamental Materials for Industrial Production and Experimental Measurement

Compositional Structure

  Marble/Granite platforms are primarily composed of minerals such as pyroxene, plagioclase, minor olivine, biotite, and trace magnetite, exhibiting a sleek black luster and a densely compact crystalline structure. Through hundreds of millions of years of natural aging, these platforms have attained uniform textures, delivering exceptional stability, robust strength, and high hardness—capable of maintaining precision even under substantial loads. They serve as indispensable tools for industrial production and laboratory measurement applications.

Geological Formation

Sourced from premium subterranean rock strata, Marble/Granite platforms undergo natural aging over eons, resulting in inherently stable geometries that remain unaffected by conventional temperature fluctuations. The granite materials employed are selected via rigorous physical testing, featuring fine-grained crystallization and adamantine hardness. With a compressive strength ranging from 2,290 to 3,750 kg/cm² and a Mohs hardness rating of 6–7, these platforms exhibit outstanding resistance to wear, chemical corrosion (acids and alkalis), and rust. As non-metallic materials, they are entirely non-magnetic and free from plastic deformation. Their hardness, 2–3 times that of cast iron (equivalent to HRC > 51), ensures long-term dimensional stability. Unlike metallic tools, which may deform and lose precision when impacted, Marble/Granite platforms sustain only minimal chipping from heavy collisions, preserving their accuracy intact. This makes them superior to precision measurement benchmarks crafted from high-grade cast iron or steel, offering unparalleled and consistent precision.

Regional Origin

In China, the premium Marble/Granite materials essential for manufacturing Marble/Granite platforms are predominantly quarried in Shandong Province and Inner Mongolia. Among these, Shandong’s deposits are widely regarded as the highest quality, outperforming those from Inner Mongolia. The principal production hubs for Marble/Granite platforms are concentrated in Botou City (Hebei Province) and Gaotang County (Shandong Province), leveraging local geological resources to deliver superior products.

Technical Advantages

Marble/Granite platforms are fabricated from high-quality natural Marble/Granite through a combination of mechanical machining and meticulous hand-lapping. Characterized by their jet-black luster, dense microstructures, and uniform textures, they offer exceptional stability, strength, and hardness. Key advantages include:

• Corrosion Resistance: Immune to rust, acids, and alkalis, ensuring longevity in harsh environments.

• Non-Magnetic Properties: Ideal for applications requiring electromagnetic neutrality.

• Dimensional Stability: Resistant to deformation under heavy loads and normal temperature variations.

• Superior Wear Resistance: Maintains surface integrity even after prolonged use.

As precision reference measurement tools hewn from natural stone, Marble/Granite platforms provide an ideal datum surface for the inspection of instruments, precision tools, and mechanical components. Their unique material properties give them a distinct edge over cast iron plates, particularly in high-precision measurement scenarios where accuracy is paramount.

Granite plates, precision granite inspection platforms, and instrument bases—crafted from premium "Jinan Green" stone—undergo rigorous mechanical processing and hand-finishing to achieve identical performance characteristics. These components are widely adopted in mechanical manufacturing for their ability to sustain high precision under heavy loads, along with their rust-resistant, non-magnetic, and dimensionally stable attributes.

Precision Standards

Marble/Granite platform precision adheres to national and international norms, with flatness tolerances specified in GB4987-85 as follows:

Specifications and Flatness Criteria

(Detailed specifications and flatness parameters may be provided upon request, tailored to specific product requirements.)