Granite Inspection and Measurement Working Platform
عجائب اللحامون يصوغون التميز معًا
تفاصيل المنتجات
منصة أدوات دقيقة من الجرانيت، مصنوعة من مادة حجر “جينان بلو” عالية الجودة من خلال المعالجة الميكانيكية والطحن اليدوي. عالية ، لا تشوه ، استقرار جيد ، عمر خدمة طويل ، مناسبة لأعمال القياس في المصانع الميكانيكية والمختبرات.
يتكون التركيب المعدني الرئيسي لجرانيت “جينان الأزرق” من الهورنيند والبلاجيوكلاز والبيوتيت وكمية صغيرة من المغنتيت بلون أسود وبنية دقيقة وبعد مليارات السنين من التقادم والتوحيد والاستقرار الجيد والقوة العالية والصلابة العالية، والتي يمكن أن تحافظ على دقة عالية تحت الحمل الثقيل.
المزايا:
- High precision, good stability, and not easy deform, which can guarantee the measurement accuracy at room temperature.
- Does not rust, resistant to acid and alkali, and does not require special maintenance.
- wear resistance and long service life.
- Scratches and bumps on the working surface do not affect the measurement accuracy.
- There is no magnetization problem.
. يمكن أن تنزلق بسلاسة دون أي شعور بالسحب أثناء القياس.
The precision of the granite flat plate is referenced to various advanced national standards, and the flatness tolerance is based: JB/T7975-1999 standard: 000 grade = 1 × (1 d/1000) um;00 grade = 2 × (1 d/1000) um; 0 grade = 4 × (1 d/1000); 1 grade = 8 × (1 d/1000) um (d is the diagonal mm) (measurement temperature is generally 20 ± ℃).
COMPARISON OF GRANITE MATERIALS
| content | Jinan Black | Indian Black | Sesame Black 654 |
| Specific Gravity | 3100-3300kg/m3 | 3200-3300kg/m3 | 2900-3000 kg/m3 |
| Elastic Modulus | 1.27×105 N/mm2 | 1.29×105 N/mm2 | 1.27×105 N/mm2 |
| Coefficient of Linear Expansion | 4.61×10 -6/℃ | 4.61×10 -6/℃ | 4.61×10 -6/C |
| Thermal Expansion Coefficient | 0.18%/C | 0.18%/°C | 0.2%/C |
| Water Absorption | <0.013% | <0.011% | <0.013% |
| Rockwell Hardness | >70.9 | >70.9 | >70.9 |
| Radiation Equivalent | 0.38uSv/h | 0.35uSv/h | 0.38uSv/h |
| Dry Compressive Strength | 220.1MPa | 221.1MPa | 218.3MPa |
| Appearance | Evenly distributed white specks likesnowflakes (appearing translucent),with a clean and shiny appearanceafter maintenance. | Evenly distributed white specks likesnowflakes, with a black and glossybase material. After maintenance,the appearance is clean and shiny. |
There are evenly distributed whitespecks (non-transparent), larger inpattern compared to Jinan Black.After maintenance, the appearanceis clean but less glossy than JinanBlack. |
| Precision Retention | Below 5 micrometers (um) | Below 5 micrometers (um) | 5-10um |
| Ease of Processing | Easy | صعب | Harder |
| Due to China’s environmental policies, the mining of Jinan Black granite has been halted since 2006. After 15years, large-sized jinan Black granite blocks have become scarce, only a few pieces can still be found, and it’s nolonger possible to obtain them in large quantities. |
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