5 results about "Nano crystallites" patented technology

The invention discloses lake blue nano microcrystalline glass and a preparation method thereof, and belongs to the field of high-end artificial gems, precision optical elements and microcrystalline glass materials. Based on a specific component design and a preparation process, comprehensive improvement of material hardness, thermal stability, spectral stability and color consistency is synchronously realized, and the nano-microcrystalline glass which is magnificent in color and luster and comparable to natural lake blue tourmaline in physical strength and long-term durability is obtained. An ideal solution can be provided for high-end jewelry accessories, reliable performance can also be provided for optical application, and the method has important value for promoting upgrading and innovation of related industries.

The invention discloses a nanocrystalline glass calendering production tension regulating device and method, and relates to the technical field of calendering rollers of calenders.The nanocrystalline glass calendering production tension regulating device comprises a stand, a fixed roller is arranged on the surface of the stand, a tension control assembly is arranged above the fixed roller and comprises an air cylinder arranged at the top of the stand, and a piston rod at the end of the air cylinder is provided with a movable base plate; a movable roller is arranged in the movable seat plate, the fixed roller and the movable roller are both driven by a motor, the tension of the pressure melt is accurately adjusted by controlling the distance between the fixed roller and the movable roller, a cooling pond is arranged below the stand, cooling liquid is contained in the cooling pond, and cooling assemblies are arranged at the bottoms and the tops of the fixed roller and the movable roller correspondingly. The piston rod at the end of the air cylinder is controlled to drive the movable base plate to move downwards in the vertical direction, the movable base plate drives the fixed roller and the cooling roller to move downwards when moving, the position between the water inlet formed in the end of the cooling roller and the tap pipe is offset in the downward moving process of the cooling roller, and displacement compensation is conducted on the cooling roller through the rubber connecting sleeve; and therefore, the tension can be conveniently and quickly adjusted.

The invention discloses a robot for detecting appearance and performance of nanocrystalline glass based on multi-sensor fusion, which comprises a lifting frame, a first conveying part and a second conveying part, and is characterized in that a sensor module for detecting glass is mounted at the bottom of the lifting frame, and two groups of moving frames are arranged at the lower end of the lifting frame; an accommodating space for accommodating the negative pressure control part is arranged between the two; when glass is conveyed to the containing space through the first conveying part, the lifting frame drives the negative pressure control part to move downwards, the glass is grabbed through the second grabbing plate, and the overturning motor acts to drive the negative pressure control part to turn over the glass. The lifting frame and the negative pressure control part are driven by the electric push rod to move up and down, so that the turning operation of glass can be realized, the overall structure of the equipment is compact, the occupied space is small, and the glass turning efficiency is greatly improved; and meanwhile, the structure can ensure that the placement position of the turned glass is completely overlapped with the initial position, the deviation phenomenon is avoided, the glass detection quality is effectively guaranteed, and the detection error is reduced.

The invention discloses nanocrystalline glass calendaring equipment and a control method thereof, and relates to the technical field of microcrystalline glass processing, the end point of the maximum allowable continuous operation speed interval is used as a safe operation boundary point in a process regulation strategy, a speed-risk coupling model is constructed, and a comprehensive risk evaluation value at a corresponding calendaring speed is output. And in the process control stages from the speed intervention point to the end point of the maximum allowable operation interval, for each process control stage, on the basis of the comprehensive risk evaluation value output in real time in the process control stage, the allowable rolling speed upper limit value of the stage is calculated, and a speed safety boundary curve dynamically adjusted along with the process progress is formed. According to the control method, through a technical path of risk identification-boundary quantification-dynamic regulation and control, the intelligent level of the production process is remarkably improved while the forming quality of the nanocrystalline glass and the reliability of equipment are guaranteed.

This invention relates to the field of special optical glass technology, and discloses a special optical glass, its preparation method, and its applications. The method includes: using oxides such as La2O3 and Ta2O5, as well as LaF3 and / or YF3, as raw materials, mixing them in a specific molar ratio and drying them to obtain a mixture; placing the mixture in a platinum crucible, melting it at 1580-1620℃ for 3-5 hours in air atmosphere while stirring; pouring it into a preheated mold at 300-500℃ to form a glass blank; annealing it at 540-580℃ and then cooling it; nucleating it at 580-590℃ and crystallizing it at 600℃ to precipitate ZrO2 nanocrystals; after crystallization, surface treating it, immersing it in a molten salt bath of KF:NaF=2:1 for ion exchange, and finally washing it with deionized water and drying it at 50-80℃. This invention achieves a high refractive index and a suitable Abbe number, while significantly improving the structural stability and crack resistance of the material.