Granite 00 grade precision mechanical components bed beam guide
Welding Wonders Forging Excellence Together
PRODUCTS DETAIL
Precision granite mechanical components, made of high-quality “Jinan Blue” stone, are processed by machinery and finely ground by hand. have high precision, no deformation, good stability and long service life.
We can process various components for the user, such as granite base columns, beams, and guides for threecoordinate measuring machines. We can also process various granite bases, gantries, and slides for printed circuit board drilling, milling, and engraving machines.
We can process irregular products for the user.
The perfect combination of granite with metal and electronics.
Advantages:
1. High precision, good stability, and not easy to deform which can guarantee the measurement accuracy at room temperature.
2. Will not rust, resistant to acid and alkali, no need for special maintenance.
3. Good wear resistance long service life.
4. Scratches and bumps on the working surface do not affect the measurement accuracy.
5. There is no magnetization problem.
6. It slide smoothly without any drag during measurement.
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 | Hard | 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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