Preparation method of chalcogenide glass material
By using a quenching heating device to perform stand-alone insulation, air-cooled or water-cooled quenching during the preparation of sulfur-based glass, the stripes caused by the oscillation of sulfur-based glass during transfer are solved, the optical properties of the glass are improved and the preparation process is simplified.
Patent Information
- Application Number
- CN202411444484.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-01-17
AI Technical Summary
During the production process of sulfur-based glass, the fluctuation of the melt during transfer causes rapid cooling, which may form small crystal particles, affecting the optical properties of the glass and leading to the generation of stripes.
A method for preparing sulfur-based glass materials was designed, including raw material preparation, mixing, packaging, high-temperature melting, quenching, annealing and cooling steps. A quenching heating device was used to stand in a stand-alone insulation to avoid vibration of the molten material, and air-cooled or water-cooled quenching was used. To reduce the formation of stripes.
It effectively avoids the shock of molten sulfur-based materials when they are released from the oven before quenching, reduces the streaks caused by vibration, improves the optical properties of the glass, and simplifies the preparation process.
Smart Images
Figure CN119320229A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of chalcogenide glass material preparation, in particular to a method for preparing chalcogenide glass material. Background Art
[0002] Chalcogenide glass has unique advantages as an infrared lens material. Chalcogenide glass has high processing efficiency and can be precisely molded, which is more than 10 times higher than diamond turning, and the raw material cost is 1 / 3 of that of germanium single crystal. In terms of temperature adaptability, germanium single crystal is relatively "delicate", and the image is unstable when the temperature changes greatly. Chalcogenide glass can face a temperature difference of 110 degrees from -40 degrees Celsius to 70 degrees Celsius without pressure.
[0003] During the production process of sulfur-based glass, the ampoule needs to be taken out of the high-temperature rocking furnace and transferred to a quenching table for quenching (water cooling or air cooling quenching). When the ampoule is transferred, the sulfur-based material is still a melt, and the transfer will produce vibrations inside the melt. Due to the subsequent rapid cooling and quenching (if not cooled quickly in time, small crystal particles may be formed in the glass, affecting the optical properties of the glass), the glass is rapidly cooled and solidified, and the vibration will eventually form stripes. In order to alleviate the generation of stripes, the present technical solution designs a method for preparing a sulfur-based glass material. Summary of the invention
[0004] The purpose of the present invention is to solve the above problems and to design a method for preparing a chalcogenide glass material.
[0005] To achieve the above object, the technical solution of the present invention is a method for preparing a chalcogenide glass material, comprising the following steps:
[0006] Step 1: Prepare raw materials;
[0007] Step 2: Raw material mixing operation;
[0008] Step 3: Packaging operation;
[0009] Step 4: high temperature melting and quenching;
[0010] Step 5: Annealing and cooling.
[0011] As a further description of the technical solution, in the step 1, the raw materials for preparing the chalcogenide glass are weighed according to the raw material ratio.
[0012] As a further description of the technical solution, in the step 2, the weighed raw materials are placed in a mixing device for mixing to ensure uniform mixing.
[0013] As a further description of the technical solution, in the step three, the uniformly mixed solution is placed in a quartz ampoule for vacuum packaging.
[0014] As a further description of the technical solution, in the step 4, the quartz ampoule is heated to melt the encapsulated mixed raw materials at high temperature; after the heating is completed, the quartz ampoule and the melt encapsulated therein are quenched with strong wind or ice water to obtain a semi-finished chalcogenide glass.
[0015] As a further description of the technical solution, in step five, the quartz ampoule and the semi-finished glass are placed in an annealing furnace for annealing. After the annealing is completed, the quartz ampoule and the semi-finished glass are cooled to room temperature, and then the quartz ampoule is opened to take out the chalcogenide glass.
[0016] As a further description of the technical solution, in step four, a quenching heating device is used in the quenching process, and the quenching heating device includes a plurality of heating components, and the plurality of heating components form a heat preservation space.
[0017] As a further description of the technical solution, a temperature detection and control system is provided in the quenching and heating device.
[0018] As a further description of the present technical solution, several heating components are separable.
[0019] As a further description of the technical solution, the method for using the quenching heating device comprises the following steps:
[0020] Step 1: Before quenching, heat the inside of the heating device to the swing furnace outlet temperature and keep it stable;
[0021] Step 2: Transfer the quartz ampoule together with the molten chalcogenide glass into a heat preservation device;
[0022] Step 3: The molten chalcogenide glass is placed in the quenching and heating device to keep warm. During this process, the molten chalcogenide glass is still in a molten state, and the vibration generated when it comes out of the furnace will gradually disappear with the standing time;
[0023] Step 4: When the molten glass becomes still again, remove the quenching heating device and implement air cooling or water cooling at the same time.
[0024] The beneficial effect is that the preparation method of the sulphur-based glass material of the technical solution is simple to operate and easy to implement. The preparation method of the sulphur-based glass material and the quenching and heating device of the technical solution can avoid the vibration of the molten sulphur-based material when it is taken out of the furnace before quenching, thereby greatly reducing the stripes caused by the vibration of the molten material. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of the quenching and heating device of the present invention.
[0026] In the figure, 1. Heating component; 2. Insulation space; 3. Quartz ampoule. DETAILED DESCRIPTION
[0027] First, the original intention of the design of the present invention is explained. During the production process of the chalcogenide glass, the ampoule needs to be taken out of the high-temperature rocking furnace and transferred to a quenching table, and then quenched (water-cooled or air-cooled quenched). When the ampoule is transferred, the chalcogenide material is still a melt, and the transfer will produce vibrations inside the melt. Due to the subsequent rapid cooling and quenching (if it is not cooled quickly in time, small crystal particles may be formed in the glass, affecting the optical properties of the glass), the glass is rapidly cooled and solidified, and the vibration will eventually form stripes. In order to alleviate the generation of stripes, the present invention designs a method for preparing a chalcogenide glass material.
[0028] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1 As shown, a method for preparing a chalcogenide glass material comprises the following steps:
[0029] Step 1: Raw material preparation: In the step 1, the raw materials for preparing the chalcogenide glass are weighed according to the raw material ratio.
[0030] Step 2: Raw material mixing operation; In the step 2, the weighed prepared raw materials are placed in a mixing device for mixing to ensure uniform mixing.
[0031] Step three: Packaging operation; In the step three, the evenly mixed solution is placed in a quartz ampoule 3 for vacuum packaging.
[0032] Step 4: high-temperature melting and quenching; in the step 4, the quartz ampoule 3 is heated to melt the encapsulated mixed raw materials at high temperature; after the heating is completed, the quartz ampoule 3 and the melt encapsulated therein are quenched with strong wind or ice water to obtain a semi-finished chalcogenide glass.
[0033] A quenching heating device is used in the quenching process. The quenching heating device includes a plurality of heating components 1 , and the plurality of heating components 1 form a heat preservation space 2 .
[0034] The quenching and heating device is provided with a temperature detection and control system.
[0035] Several heating components 1 are detachable.
[0036] The method for using the quenching and heating device comprises the following steps:
[0037] Step 1: Before quenching, heat the inside of the heating device to the swing furnace outlet temperature and keep it stable;
[0038] Step 2: transferring the quartz ampoule 3 together with the molten chalcogenide glass into a heat preservation device;
[0039] Step 3: The molten chalcogenide glass is placed in the quenching and heating device to keep warm. During this process, the molten chalcogenide glass is still in a molten state, and the vibration generated when it comes out of the furnace will gradually disappear with the standing time;
[0040] Step 4: When the molten glass becomes still again, remove the quenching heating device and implement air cooling or water cooling at the same time.
[0041] Step 5: Annealing and cooling. In step 5, the quartz ampoule 3 and the semi-finished glass are placed in an annealing furnace for annealing. After the annealing, the quartz ampoule 3 and the semi-finished glass are cooled to room temperature, and then the quartz ampoule 3 is opened to take out the chalcogenide glass.
[0042] The preparation method of the chalcogenide glass material of the technical solution is simple to operate and easy to implement. The preparation method of the chalcogenide glass material and the quenching and heating device of the technical solution can avoid the vibration of the molten chalcogenide material when it is taken out of the furnace before quenching, thereby greatly reducing the stripes caused by the vibration of the molten material.
[0043] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.
Claims
1. A method for preparing a chalcogenide glass material, characterized in that: The following steps are involved: Step 1: Prepare raw materials; Step 2: Raw material mixing operation; Step 3: Packaging operation; Step 4: high temperature melting and quenching; Step 5: Annealing and cooling.
2. The method for preparing a chalcogenide glass material according to claim 1, characterized in that: In the step 1, raw materials for preparing chalcogenide glass are weighed according to the raw material ratio.
3. The method for preparing a chalcogenide glass material according to claim 1, characterized in that: In the step 2, the weighed raw materials are placed in a mixing device for mixing to ensure uniform mixing.
4. The method for preparing a chalcogenide glass material according to claim 1, characterized in that: In the step 3, the uniformly mixed solution is placed in a quartz ampoule (3) for vacuum packaging.
5. The method for preparing a chalcogenide glass material according to claim 1, characterized in that: In the step 4, the quartz ampoule (3) is heated to melt the encapsulated mixed raw materials at high temperature; after the heating is completed, the quartz ampoule (3) and the molten material encapsulated therein are quenched with strong wind or ice water to obtain a semi-finished chalcogenide glass.
6. The method for preparing a chalcogenide glass material according to claim 1, characterized in that: In the step 5, the quartz ampoule (3) and the semi-finished glass are placed in an annealing furnace for annealing. After the annealing is completed, the quartz ampoule (3) and the semi-finished glass are cooled to room temperature. Then, the quartz ampoule (3) is opened to take out the chalcogenide glass.
7. The method for preparing a chalcogenide glass material according to claim 1, characterized in that: In the step 4, a quenching heating device is used during the quenching process, and the quenching heating device includes a plurality of heating components (1), and the plurality of heating components (1) form a heat preservation space (2).
8. The method for preparing a chalcogenide glass material according to claim 7, characterized in that: The quenching and heating device is provided with a temperature detection and control system.
9. The method for preparing a chalcogenide glass material according to claim 7, characterized in that: Several heating components (1) are detachable.
10. The method for preparing a chalcogenide glass material according to claim 7, characterized in that: The method for using the quenching and heating device comprises the following steps: Step 1: Before quenching, heat the inside of the heating device to the swing furnace outlet temperature and keep it stable; Step 2: transferring the quartz ampoule (3) together with the molten chalcogenide glass into a quenching and heating device; Step 3: The molten chalcogenide glass is placed in the quenching and heating device to keep warm. During this process, the molten chalcogenide glass is still in a molten state, and the vibration generated when it comes out of the furnace will gradually disappear with the standing time; Step 4: When the molten glass becomes still again, remove the quenching heating device and implement air cooling or water cooling at the same time.