One. Equipment use The equipment is mainly applicable to 4-6 "sapphire, silicon, germanium films, lithium niobate and lithium tantalate single sheet of brittle materials with high precision polishing. II. Features 1. The main polishing and four polishing heads are used frequency variable speed, and can be easily set up four polishing head synchronous speed, the relative speed of the polishing process of harmonization; 2. polishing head with electric proportional valve regulation to achieve the automatic pressure control, can be as large Time zone automatic compression grinding process, the pressure conversion process in accordance with different grinding set, great to meet the different requirements of the grinding process on the device; 3. main selling and are located within the polishing head cooling water circulation system, using Non-contact temperature detection device main dish, enabling precise temperature control, PLC and touch screen control, can store multiple sets of parameters, display rich, easy to operate machine matching, and real-time display; 4. Selection of the world-renowned components supporting outsourcing vendors to ensure that the operation and use of precision equipment reliability, the reliability and accuracy of indicators to fully meet the needs of the sapphire-sided polishing. Third, the main technical parameters of the device 1. The main polishing diameter φ1282mm 2. polishing disc diameter φ485mm 3. main polishing speed 0 ~ 65rpm 4. polishing head speed of 0 ~ 65rpm 5. polishing 6. Number of heads 4 main cylinder diameter φ125mm 7. polishing head lifting stroke 250mm 8. maximum set pressure 500kgf 9. Minimum Set pressure 30kgf 10. Main drive motor 22kW 11. polishing head drive motor 0.75kW × 4 12. Equipment Dimensions (L × W × H) 3050 mm × 1740 mm × 2600 mm 13. 6500Kg four about the quality of equipment. equipment installation environment equipment should be installed flat on the ground, away from sources of vibration, dust, smog-free places 1. Operating temperature:. 15 ℃ -25 ℃ 2. gas source: 0.4-0.6MPa (dry and oil) 3. Relative Humidity ≦ 80% 4. Power: AC380V, 50Hz (three-phase five-wire system) 5. Cooling water pressure: 2kgf / cm2 or less water: 30L / min Temperature: 7 ~ 12 ℃