Yang Jie was also very satisfied with this fingerprint recognition system, and then asked about the cost of this fingerprint recognition system.

Yang Jie hopes that the cost of this fingerprint recognition system can be reduced to about 10 US dollars in a few years, and it can be quickly promoted on a large number of products and equipment of Huaxing Group.

In order to meet the requirements of his boss, Tao Zhijie and Huaxing Semiconductor Materials Co., Ltd. jointly built a sapphire crystal design, R&D and manufacturing plant in the Hexi Science and Technology Corridor Science and Technology Park.

Now the countries that can provide sapphire glass are mainly concentrated in Russia, Eagle Sauce, and Europe, because sapphire glass was mainly used in aerospace heat shields, night vision infrared and far infrared sights, night vision cameras and other instruments and satellites, space technology instruments and meters, as well as as high-power laser windows, various optical prisms, and are fully used in high-precision instruments and meters for navigation and aerospace.

In fact, domestic research in this area began in the seventies of the last century, but both production capacity and equipment and technology are far behind, and the military still needs to purchase from overseas before.

After the rise of Huaxing Group Co., Ltd., it has mastered the preparation and process of monocrystalline silicon, and it is also able to design and develop equipment, and it has also purchased a lot of sapphire glass from Germany, Damao, Eagle Sauce domestic companies that produce sapphire glass to produce and process photoelectric pods and instruments and equipment on satellites and rockets.

Germany's Shichuang Group and Huaxing Group Co., Ltd. jointly built a factory for the production of silicon wafers in Honghu City and made a lot of money, the year before last, Huaxing Group also introduced a complete set of sapphire glass production technology from Shichuang Group Company, and built a sapphire glass factory, but this sapphire glass factory uses the relatively backward technology of Shichuang Group Company, the largest size of the crystal can only grow to 35 kilograms, and the size of the sapphire glass that can only be cut out of such a crystal is naturally not large.

Siltronic Group itself can produce 200 kg of crystals, and Da Mao can produce 350 kg of sapphire crystals, which is also the largest sapphire crystal that can be produced in the world.

Yang Jie is naturally not satisfied with this, so let Huaxing semiconductor materials company design and develop larger crystal production equipment and improve crystal production technology on the basis of this technology, at the end of last year in the laboratory to break through the technical bottleneck of large-size sapphire crystal growth, on the basis of 35 kg crystal successfully developed 80 kg crystal and mass production, crystal appearance lossless, colorless, no bubbles, no scattering, excellent internal quality.

80 kg sapphire crystal can process 8 inches and a half bottom, and one kilogram crystal can cut out 50 pieces of substrate, while similar foreign products are generally 40 pieces per kilogram.

The prepared crystal single crystal performance and crystal dislocation density are higher than similar foreign products, and the crystal has reached or surpassed the level of the world's two largest sapphire substrate suppliers in many key indicators.

Huaxing Semiconductor Materials Co., Ltd. has been developing single crystal materials for so many years, and its strength in crystal growth technology is very strong, and it naturally uses its own accumulated process technology in the research and development of sapphire crystal production technology.

This time, it was able to successfully produce 80 kg of sapphire crystals with the process developed by itself, which also proves that Huaxing Group has been at the world's leading level in sapphire crystal growth technology.

The first and second phases of the Sapphire Crystal Design, R&D and Manufacturing Plant jointly built by Laibao High-tech Company and Huaxing Semiconductor Materials Co., Ltd. in the Hexi Science and Technology Corridor Science and Technology Park have been completed and put into operation, with a total of 70 sets of 80 kg sapphire furnaces and 40 sets of processing equipment, which can produce 1,680 80 kg sapphire crystals per year, and has become the largest artificial sapphire production and processing base in China.

At present, the domestic military industrial group is to purchase a large number of sapphire crystals from Huaxing Group to produce various high-end sapphire glass, including missile fairings, like this hemisphere fairing company can produce 1,000 pieces per year, which is also thanks to the design and manufacture of high-end precision machinery and equipment and the processing strength of sapphire glass.

Yang Jie knows that with the use of sapphire glass on smart phones by Huaxing Group as a fingerprint recognition system and mobile phone camera protective layer, it will definitely cause a follow-up boom, according to such a huge output of smart phones, the demand for sapphire glass will usher in a big explosion, and he will not miss such a large market.

After inspecting the Leybold high-tech company, Yang Jie then came to this sapphire glass factory.

In the workshop, Yang Jie also saw a sapphire crystal produced from the crystal furnace, which was like a pile of translucent jelly with some irregular shapes at this time, shining with a strange luster under the light.

At this time, a technician is measuring the size and weight of the crystal.

Later, Yang Jie also came to the processing workshop, and the high-end machine tools of the machining center in the workshop processed these crystals at this time, and these crystals will be cut into blanks of various shapes such as crystal rods.

In particular, Yang Jie has a detailed understanding of the processing process of the sapphire fairing.

The effective outer diameter of the fairing is about 300 mm in diameter, 200 mm in height, 8 mm in thickness, and the material bubble degree is required to be A0, which is very high for the sapphire material grade.

The quality of the optical grade sapphire is still better than that of the bubble and lifting methods, but the large fairing with a diameter of 300 mm cannot be processed due to the relatively small size of the crystal grown by the lifting method, and the sapphire ingots grown by the bubble growth method at the 80 to 100 kg level are the best choice for the fairing.

In the process of milling and forming, because the gemstone rough material is very heavy, the firmness of the bonding is very high, and the gemstone is a super hemispherical dome, which requires high accuracy and concentricity of the milling tool size.

In order to solve these problems, the senior technicians of the factory optimized the design of the process, designed a precision reclaiming drill barrel, controlled the outer diameter size of the blank, reduced the weight of the gemstone, and used a special adhesive to make the parts firmly bonded, can effectively withstand the milling pressure, and designed a special tooling to effectively control the concentricity of the dome to reach the micron level.

Because the hardness of sapphire material is high, the optical technical indicators are high, and the precision and stability of the equipment have high requirements, the traditional grinding equipment has low speed and poor adjustability, poor equipment pressure adjustability, and small processing space, if the traditional fine grinding equipment is used to process, not only the production efficiency is very low, the size range of the processed product is also very small, and the technical requirements of the dome can not be met.

For this reason, the machine tool research institute is also specially designed to optimize the equipment, the spindle speed can be adjusted arbitrarily, and the speed and pressure of the pendulum shaft are adjustable.

Through these improvements, the production efficiency and yield of the sapphire fairing have been greatly improved.