Method for growing large-size plate-shaped eutectic fluorescent material for weapon separation camera shooting

Abstract

The invention provides a method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and camera shooting, which is characterized by comprising the following steps of: staying a boat-shaped crucible in a preheating area of a multi-layer partition heat preservation and heat insulation screen for preheating treatment, increasing the power of a growth furnace to 17.5 kW, and when the head of a raw material close to the heating area of the multi-layer partition heat preservation and heat insulation screen starts to melt, stopping heating; moving the whole crucible into a heating area; after material melting is completed, the head of the crucible is moved to the junction of the heating area and the cooling area of the multi-layer partition heat preservation and heat insulation screen, and crystal pulling operation is started at the crystal pulling speed of 10-20 mm / h; and when the tail part of the crucible reaches the junction of the heating area and the cooling area, the eutectic growth is finished. The invention discloses a method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation camera shooting, the temperature gradient can be maximally increased to 50 DEG C / cm, the growth rate of eutectic can be greatly increased, the eutectic distance is further prevented from excessively growing, and large-size plate-shaped Al2O3 / YAG: Re eutectic with better performance is obtained through growth preparation.

Description

Technical Field

[0001] The present invention relates to the field of preparing weapon separation imaging eutectic fluorescent material production, and more specifically, to a method for growing large-size plate-shaped eutectic fluorescent material for weapon separation imaging. Background Art

[0002] Rare earth doped YAG has good optical uniformity, high thermal conductivity, thermal shock resistance, stable physical and chemical properties, and can operate in a variety of laser modes such as pulse and continuous at room temperature. Therefore, it is widely used in military and civilian fields. 2 O 3 Al obtained by melt recrystallization based on eutectic ratio 2 O 3 / YAG:Re eutectic not only has excellent high-temperature oxidation resistance, corrosion resistance and mechanical properties, but also has adjustable excitation emission characteristic peaks, which has great engineering application prospects and potential economic value. In the field of weapon separation high-speed camera research, high-power white light LED devices are often required as high-speed camera light sources. However, high-power white light LED light sources generate high heat, which causes the epoxy resin used to encapsulate the phosphor to age rapidly, greatly shortening the service life of the light source device. 2 O 3 / YAG:Re eutectic is cut and processed into the required size of LED devices, and combined with the underlying blue light chip by mechanical bonding method, which can replace epoxy resin and phosphor, and greatly improve the service life of high-power white light LED devices.

[0003] In the prior art, a large-size plate-shaped eutectic fluorescent material Al is grown and prepared for weapon separation and imaging. 2 O 3 / YAG:Re as an example, it requires a horizontal directional solidification temperature of more than 1900℃, and the current growth and preparation uses the IKAK-2 crystal growth furnace produced by Donetsk Company in Ukraine. The original thermal insulation screen of the equipment cannot meet the production needs. The main reason is that its internal temperature gradient is not greater than 1℃ / cm, which leads to too slow eutectic growth time and the eutectic spacing will continue to increase, which not only increases the cost of growth, but also reduces the mechanical and optical properties of the eutectic. More seriously, it will cause excessive concentration of internal stress of the eutectic, resulting in growth preparation failure. Therefore, it is necessary to design a new type of multi-layer partitioned thermal insulation screen so that the temperature gradient of the equipment can reach more than 50℃ / cm to complete production. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0005] In order to achieve these purposes and other advantages of the present invention, a method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging is provided, comprising: S1. After loading the boat-shaped molybdenum crucible with raw materials into the furnace of the growth furnace, adjust the vacuum degree in the furnace to 5.0×10 -3 Pa; S2, the boat crucible is placed in the preheating zone of the multi-layer partitioned heat insulation screen for preheating treatment, and the vacuum degree in the furnace is always 5.0×10 -3 Pa or above; S3, increase the power of the growth furnace to 17.5 kW, and when the raw material head near the heating zone of the multi-layer partitioned heat insulation screen begins to melt, move the entire crucible into the heating zone; S4, continuously increasing the power of the growth furnace to 21.7 kW and maintaining it for 4 hours to perform the material operation; S5. After the material is quenched, the crucible head is moved to the junction of the heating zone and the cooling zone of the multi-layer partitioned heat insulation screen, and the crystal pulling operation is started at a crystal pulling speed of 10-20 mm / h, so that the crucible moves from the junction to the cooling zone, and when the tail of the crucible reaches the junction of the heating zone and the cooling zone, the eutectic growth ends; S6. Reduce the power of the growth furnace to 19.7 kW within 3 hours, and control the cooling rate to 0.667 kW / h to perform eutectic in-situ annealing.

[0006] Preferably, the preheating zone, heating zone and cooling zone of the multi-layer partitioned thermal insulation screen are respectively provided with corresponding insulation components I, II and III.

[0007] Preferably, the heat insulation assembly I comprises: an upper heat insulation mechanism I, a left heat insulation mechanism I, a right heat insulation mechanism I, and a lower heat insulation mechanism I which are enclosed in space to form a heating channel I; Among them, the inner sides of the upper insulation mechanism I, the left insulation mechanism I, and the right insulation mechanism I are correspondingly provided with an upper insulation module I, a left insulation module I, and a right insulation module I.

[0008] Preferably, the heat insulation assembly III comprises: an upper heat insulation mechanism III, a left heat insulation mechanism III, a right heat insulation mechanism III, and a lower heat insulation mechanism III which are enclosed in space to form a heating channel III; Among them, the upper insulation mechanism III is also provided with a first-pole upper insulation module, a second-pole upper insulation module, and a third-pole upper insulation module arranged in a stepped manner in space; Wherein, the outer sides of the left heat insulation mechanism III and the right heat insulation mechanism III are correspondingly provided with a left heat insulation module III and a right heat insulation module III.

[0009] Preferably, the heat insulation assembly II includes: a heat insulation mechanism II, a left heat insulation mechanism II, a right heat insulation mechanism II, and a lower heat insulation mechanism II which are enclosed in space to form a heating channel II; The heat insulation component II is also provided with a front heat insulation mechanism and a rear heat insulation mechanism, and the front heat insulation mechanism and the rear heat insulation mechanism are also provided with windows communicating with the heating channel I and the heating channel III respectively; The outer sides of the left heat insulation mechanism II and the right heat insulation mechanism II are respectively provided with a matching left heat insulation module II and a right heat insulation module II.

[0010] Preferably, each heat insulation mechanism comprises: a plurality of heat insulation screens arranged in parallel, with molybdenum roll washers arranged between adjacent heat insulation screens; Wherein, each heat shield is provided with a plurality of rows of fixing holes, and each heat shield is connected into an integrated structure by molybdenum wires passing through the fixing holes; The diameter of the molybdenum wire is 1.5 mm, the thickness of the molybdenum coil washer is 3 mm, and the spacing between adjacent heat insulation screens is 3 mm.

[0011] Preferably, the upper heat insulation mechanism I has 2 layers of heat insulation screens, the left heat insulation mechanism I has 6 layers of heat insulation screens, the right heat insulation mechanism I has 5 layers of heat insulation screens, the lower heat insulation mechanism I has 18 layers of heat insulation screens, the upper heat insulation module I has 6 layers of heat insulation screens, the left heat insulation module I has 5 layers of heat insulation screens, and the right heat insulation module I has 4 layers of heat insulation screens; The upper heat insulation mechanism II, the left heat insulation mechanism II, the right heat insulation mechanism II, the lower heat insulation mechanism II, the front heat insulation mechanism, and the rear heat insulation mechanism each have 8 layers of heat insulation screens, and the left heat insulation module II and the right heat insulation module II each have 3 layers of heat insulation screens; The upper heat insulation mechanism III has 2 layers of heat insulation screens, the left heat insulation mechanism III and the right heat insulation mechanism III each have 5 layers of heat insulation screens, the lower heat insulation mechanism III has 18 layers of heat insulation screens, the upper heat insulation module of the first pole has 1 layer of heat insulation screens, the upper heat insulation module of the second pole has 3 layers of heat insulation screens, the upper heat insulation module of the third pole has 4 layers of heat insulation screens, the left heat insulation module III and the right heat insulation module III each have 1 layer of heat insulation screens The present invention has at least the following beneficial effects: The present invention uses IKAK-2 type crystal growth furnace to grow large-size plate-shaped Al 2 O 3 When the / YAG:Re eutectic rapidly melts and recrystallizes, the temperature gradient can be increased to 50℃ / cm by designing and using this new multi-layer partitioned thermal insulation screen, which can greatly increase the growth rate of the eutectic, thereby preventing the excessive growth of the eutectic spacing, and growing and preparing large-sized plate-shaped Al with better performance. 2 O 3 / YAG:Re eutectic.

[0012] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A side view of a multi-layer partitioned thermal insulation screen according to an embodiment of the present invention; Figure 2 A top view of a multi-layer partitioned thermal insulation screen in another embodiment of the present invention; Figure 3 It is a right sectional view of the preheating zone insulation assembly I of the present invention; Figure 4 It is a front sectional view of the heating zone insulation assembly II of the present invention; Figure 5 It is a right sectional view of one of the heating zone insulation components II of the present invention; Figure 6 Another right sectional view of the heating zone insulation assembly II of the present invention; Figure 7 It is a right sectional view of the cooling zone insulation assembly III of the present invention; Figure 8 It is a left sectional view of the cooling zone insulation assembly III of the present invention; Fig. 9 A front view of a multi-layer partitioned thermal insulation screen in another embodiment of the present invention; Among them, preheating zone 1, heating zone 2, cooling zone 3, heat insulation screen 4, heat insulation component Ⅰ5, upper heat insulation mechanism Ⅰ510, upper heat insulation module Ⅰ511, left heat insulation mechanism Ⅰ520, left heat insulation module Ⅰ521, right heat insulation mechanism Ⅰ530, right heat insulation module Ⅰ531, lower heat insulation mechanism Ⅰ540, heating channel Ⅰ550, heat insulation component Ⅱ6, upper heat insulation mechanism Ⅱ610, left heat insulation mechanism Ⅱ620, left heat insulation module Ⅱ621, right heat insulation mechanism Ⅱ630, right heat insulation module Ⅱ631, Lower thermal insulation mechanism II 640, heating channel II 650, front thermal insulation mechanism 660, rear thermal insulation mechanism 670, window 680, angle steel I 690, thermal insulation assembly III 7, upper thermal insulation mechanism III 710, thermal insulation module 711 on the first pole, thermal insulation module 712 on the second pole, thermal insulation module 713 on the third pole, left thermal insulation mechanism III 720, left thermal insulation module III 721, right thermal insulation mechanism III 730, right thermal insulation module III 731, lower thermal insulation mechanism III 740, heating channel III 750, molybdenum wire 8, molybdenum coil 9. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0015] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0016] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "Ⅰ" and "Ⅱ" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1-Figure 2 , Figure 8-Figure 9 As shown, the multi-layer zoned heat insulation screen in the present invention is divided into three areas: preheating area 1, heating area 2, and cooling area 3, and the preheating area 1, heating area 2, and cooling area 3 are respectively provided with corresponding insulation components Ⅰ5, insulation components Ⅱ6, and insulation components Ⅲ7. The insulation screen 4 can be increased or decreased in each area according to the actual preparation requirements. The material used for each layer of insulation screen is tungsten, and molybdenum wire 8 is inserted through punching. Each layer is separated by molybdenum coil 9 to obtain a multi-layer connected insulation mechanism or insulation module. The insulation screen in the preheating area has a total of 45 layers of insulation screens; the insulation screen in the heating area has a total of 54 layers of insulation screens; the insulation screen in the cooling area has a total of 40 layers of insulation screens. According to the temperature gradient requirements of the grown eutectic material, the number of insulation screen layers can be increased or decreased according to the actual experimental requirements, or gradient decreasing insulation screens can be used.

[0019] Example 1 This embodiment mainly describes the structural implementation form of the heat insulation component I in the preheating zone. Figure 2-Figure 4 As shown, the heat insulation assembly I5 includes: an upper heat insulation mechanism I510, a left heat insulation mechanism I520, a right heat insulation mechanism I530, and a lower heat insulation mechanism I540 which are enclosed in space to form a heating channel I550; Among them, the inner sides of the upper insulation mechanism Ⅰ510, the left insulation mechanism Ⅰ520, and the right insulation mechanism Ⅰ530 are correspondingly provided with an upper insulation module Ⅰ511, a left insulation module Ⅰ521, and a right insulation module Ⅰ531.

[0020] The upper heat insulation mechanism I510 has 6 layers of heat insulation screens, the left heat insulation mechanism I520 has 4 layers of heat insulation screens, the right heat insulation mechanism I530 has 4 layers of heat insulation screens, the lower heat insulation mechanism I540 has 18 layers of heat insulation screens, the upper heat insulation module I511 has 2 layers of heat insulation screens, the left heat insulation module I521 has 5 layers of heat insulation screens, and the right heat insulation module I531 has 5 layers of heat insulation screens; All heat shields 7 are arranged in parallel at intervals of 3 mm, and are punched at a predetermined distance and then penetrated with molybdenum wires 8 with a diameter of 1.5 mm, and molybdenum coils 9 washers with a thickness of 3 mm are used to achieve heat shield spacing.

[0021] The specific shape and size of the heat shield are as follows: Lower insulation structure I: rectangular straight plate of 348×250×2mm; Right insulation module I: 250×130×2mm rectangular straight board, with a 30×10mm notch in the upper left corner; Left heat insulation mechanism I: 250×245×2mm rectangular straight plate, with a 30×35mm notch in the upper left corner; Right insulation module I: 250×130×2mm rectangular straight board, with a 30×10mm notch in the upper left corner; Right heat insulation mechanism I: 250×245×2mm rectangular straight plate, with a 30×35mm notch in the upper left corner; Upper insulation module I: 304×220×2mm rectangular straight board; Upper heat insulation structure I: 350×220×2mm rectangular straight plate; Front heat insulation mechanism: 434×267×2mm rectangular straight plate, 300×120mm, 70×20mm T-shaped holes in the middle; Rear insulation mechanism: 434×267×2mm rectangular straight plate, with 300×120mm and 70×20mm T-shaped holes in the middle.

[0022] Example 2 This embodiment mainly describes the structural implementation form of the heat insulation component II in the heating zone. Figure 2 , Figure 4-Figure 6 As shown, the heat insulation assembly II6 includes: an upper heat insulation mechanism II610, a left heat insulation mechanism II620, a right heat insulation mechanism II630, and a lower heat insulation mechanism II640 which are enclosed in space to form a heating channel II650; The heat insulation assembly II6 is also provided with a front heat insulation mechanism 660 and a rear heat insulation mechanism 670, and the front heat insulation mechanism 650 and the rear heat insulation mechanism 660 are also provided with windows 680 communicating with the heating channel I550 and the heating channel III750 respectively; The outer sides of the left heat insulation mechanism II 620 and the right heat insulation mechanism II 630 are respectively provided with a matching left heat insulation module II 621 and a right heat insulation module II 631 .

[0023] The upper heat insulation mechanism II 610, the left heat insulation mechanism II 620, the right heat insulation mechanism II 630, the lower heat insulation mechanism II 640, the front heat insulation mechanism 660, and the rear heat insulation mechanism 670 all have 8 layers of heat insulation screens, and the left heat insulation module II 621 and the right heat insulation module II 622 all have 3 layers of heat insulation screens; All heat shields are arranged in parallel with an interval of 3mm, and holes are punched according to the distance in the figure, and molybdenum wire with a diameter of 1.5mm is inserted, and molybdenum coil washers with a thickness of 3mm are used to achieve the heat shield spacing. Angle steel I690 is placed at the four corners of the heating area. In actual application, angle steel I690 is not connected to the heat shield, but is directly inserted at the bottom of the equipment to determine the boundary of the heat shield and block the sharp edges of the heat shield to prevent injuries during the inspection process.

[0024] The specific shapes and sizes of the heat insulation screens in each heat insulation mechanism are as follows: Left heat insulation structure II: rectangular straight plate of 267×250×2mm; Left insulation module II: rectangular straight board of 324.5×297×2mm; Right heat insulation mechanism II: rectangular straight plate of 267×250×2mm; Right insulation module II: rectangular straight board of 324.5×297×2mm; Upper insulation structure II: 356×250×2mm rectangular straight plate with a 20mm diameter round hole in the middle; Lower insulation structure II: 356×250×2mm rectangular straight plate, with 110×28mm notches on the left and right sides; 4 pieces of angle steel Ⅰ: 60×20×1mm; Example 3 This embodiment mainly describes the structural implementation form of the heat insulation component III in the cooling zone. Figure 2 , Figure 7-Figure 8 As shown, the heat insulation assembly III7 includes: an upper heat insulation mechanism III710, a left heat insulation mechanism III720, a right heat insulation mechanism III730, and a lower heat insulation mechanism III740 which are enclosed in space to form a heating channel III750; The upper heat insulation mechanism III 710 is also provided with a first-pole heat insulation module 711, a second-pole heat insulation module 712, and a third-pole heat insulation module 713 arranged in a stepped manner in space; Among them, the outer sides of the left heat insulation mechanism III720 and the right heat insulation mechanism III730 are correspondingly provided with a left heat insulation module III721 and a right heat insulation module III731.

[0025] The upper insulation mechanism III710 has 2 layers of insulation screens, the left insulation mechanism III720 and the right insulation mechanism III730 each have 5 layers of insulation screens, the lower insulation mechanism III740 has 18 layers of insulation screens, the insulation module 711 on the first pole has 1 layer of insulation screens, the insulation module 712 on the second pole has 3 layers of insulation screens, the insulation module 713 on the third pole has 4 layers of insulation screens, and the left insulation module III721 and the right insulation module III731 each have 1 layer of insulation screens.

[0026] All heat shields are arranged in parallel with an interval of 3mm, and are punched according to the distance in the figure, and then pierced with 1.5mm diameter molybdenum wire and 3mm thick molybdenum coil washers are used to achieve the heat shield spacing. A layer of angle steel II is covered between the upper heat insulation mechanism III 710 and the upper heat insulation module 711 of a pole. In actual application, the setting method and function of angle steel II are consistent with angle steel I.

[0027] The specific shape and size of the heat shield are as follows: Lower insulation structure III: rectangular straight plate of 350×200×2mm; Left heat insulation mechanism III: 200×130×2mm rectangular straight plate; Left insulation module III: 220×200×2mm rectangular straight board; Right heat insulation mechanism III: 200×130×2mm rectangular straight plate; Right insulation module III: 220×200×2mm rectangular straight board; Upper heat insulation structure III: 300×200×2mm rectangular straight plate; Thermal insulation module on one pole: rectangular straight board of 358×200×2mm; Diode upper insulation module: 358×133×2mm rectangular straight board; Three-pole upper insulation module: 358×67×2mm rectangular straight board; Angle steel II: 359×15×1mm.

[0028] The content of the present invention is not limited to the content of the above-mentioned embodiments, and the specific embodiments can be combined and adjusted according to actual experimental requirements. The following examples further illustrate the experiments conducted by applying the present invention: Example 4 In the IKAK-2 single crystal growth furnace produced by Donetsk Company in Ukraine, the multi-layer partition heat insulation screen of the present invention is used to grow large-sized plate-shaped Al 2 O 3 / YAG:Re eutectic. 2.0 kg of densified raw materials were loaded into the processed boat-shaped molybdenum crucible and loaded into the furnace. The cooling circulation system was turned on, and the mechanical pump was turned on to evacuate the vacuum and the heating was turned on to increase the temperature. After the vacuum reached the limit of the mechanical pump, the diffusion pump was turned on to continue to increase the vacuum in the furnace. First, the crucible containing the raw materials was placed in the preheating area of ​​the multi-layer partitioned heat insulation screen used this time for preheating. As the temperature rises, the vacuum will fluctuate slightly. During the heating process, the vacuum must be controlled to always be 5.0×10 -3 Pa or above. Increase the power to 17.5kW, the raw material head near the multi-layer partitioned heat insulation screen heating zone begins to melt, move the entire crucible into the heating zone, continue to increase the power to 21.7kW, and keep it in this environment for 4 hours to fully melt the material. Slowly move the crucible head to the junction of the multi-layer partitioned heat insulation screen heating zone and the cooling zone, set the predetermined crystal pulling speed (10~20mm / h) to start crystal pulling, wait for the tail of the crucible to reach the junction of the heating zone and the cooling zone, the crucible enters the cooling zone, and the eutectic growth ends. Reduce the power to 19.7kW (cooling rate is about 0.667kW / h) within 3 hours, and perform eutectic in-situ annealing; then reduce the power to zero within 24 hours (cooling rate is about 0.82kW / h); finally, continue to keep circulating cooling water and high vacuum for about 30 hours to reduce the temperature in the furnace to room temperature.

[0029] This multi-layer partitioned thermal insulation screen was used to grow large-sized Al plates. 2 O 3 The size of the / YAG:Re eutectic is approximately 170mm×90mm×20mm, and this experiment is completed.

[0030] Large size plate-shaped Al 2 O 3 / YAG:Re growth as an example, the method of the present invention is superior to the existing method or device in growing large-sized plate-shaped Al 2 O 3 / YAG:Re has more complete structure, fewer macro and micro cracks, lower internal residual stress and reduced eutectic spacing, and its mechanical and optical properties are significantly improved.

[0031] The above solution is only an illustration of a preferred embodiment, but is not limited thereto. When implementing the present invention, appropriate replacement and / or modification can be performed according to user needs.

[0032] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A method for growing large-size plate-shaped eutectic fluorescent materials for weapon separation and imaging, characterized in that: include: S1. After loading the boat-shaped molybdenum crucible with raw materials into the furnace of the growth furnace, adjust the vacuum degree in the furnace to 5.0×10 - 3 Pa; S2, the boat crucible is placed in the preheating zone of the multi-layer partitioned heat insulation screen for preheating treatment, and the vacuum degree in the furnace is always 5.0×10 -3 Pa or above; S3, increase the power of the growth furnace to 17.5 kW, and when the raw material head near the heating zone of the multi-layer partitioned heat insulation screen begins to melt, move the entire crucible into the heating zone; S4, continuously increasing the power of the growth furnace to 21.7 kW and maintaining it for 4 hours to perform the material operation; S5. After the material is quenched, the crucible head is moved to the junction of the heating zone and the cooling zone of the multi-layer partitioned heat insulation screen, and the crystal pulling operation is started at a crystal pulling speed of 10-20 mm / h, so that the crucible moves from the junction to the cooling zone, and when the tail of the crucible reaches the junction of the heating zone and the cooling zone, the eutectic growth ends; S6. Reduce the power of the growth furnace to 19.7 kW within 3 hours, and control the cooling rate to 0.667 kW / h to perform eutectic in-situ annealing.

2. The method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging as claimed in claim 1, characterized in that: The preheating zone, heating zone and cooling zone of the multi-layer partitioned thermal insulation screen are respectively provided with corresponding thermal insulation components I, II and III.

3. The method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging as claimed in claim 2, characterized in that: The heat insulation assembly I comprises: an upper heat insulation mechanism I, a left heat insulation mechanism I, a right heat insulation mechanism I, and a lower heat insulation mechanism I which are enclosed in space to form a heating channel I; Among them, the inner sides of the upper insulation mechanism I, the left insulation mechanism I, and the right insulation mechanism I are correspondingly provided with an upper insulation module I, a left insulation module I, and a right insulation module I.

4. The method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging as claimed in claim 3, characterized in that: The heat insulation assembly III includes: an upper heat insulation mechanism III, a left heat insulation mechanism III, a right heat insulation mechanism III, and a lower heat insulation mechanism III which are enclosed in space to form a heating channel III; Among them, the upper insulation mechanism III is also provided with a first-pole upper insulation module, a second-pole upper insulation module, and a third-pole upper insulation module arranged in a stepped manner in space; Wherein, the outer sides of the left heat insulation mechanism III and the right heat insulation mechanism III are correspondingly provided with a left heat insulation module III and a right heat insulation module III.

5. The method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging as claimed in claim 4, characterized in that: The heat insulation assembly II includes: a heat insulation mechanism II, a left heat insulation mechanism II, a right heat insulation mechanism II, and a lower heat insulation mechanism II which are enclosed in space to form a heating channel II; The heat insulation component II is also provided with a front heat insulation mechanism and a rear heat insulation mechanism, and the front heat insulation mechanism and the rear heat insulation mechanism are also provided with windows communicating with the heating channel I and the heating channel III respectively; The outer sides of the left heat insulation mechanism II and the right heat insulation mechanism II are respectively provided with a matching left heat insulation module II and a right heat insulation module II.

6. The method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging as claimed in claim 5, characterized in that: Each heat insulation mechanism comprises: a plurality of heat insulation screens arranged in parallel, with molybdenum coil washers arranged between adjacent heat insulation screens; Wherein, each heat shield is provided with a plurality of rows of fixing holes, and each heat shield is connected into an integrated structure by molybdenum wires passing through the fixing holes; The diameter of the molybdenum wire is 1.5 mm, the thickness of the molybdenum coil washer is 3 mm, and the spacing between adjacent heat insulation screens is 3 mm.

7. The method for growing a large-size plate-shaped eutectic fluorescent material for weapon separation and imaging as claimed in claim 6, characterized in that: The upper heat insulation mechanism I has 2 layers of heat insulation screens, the left heat insulation mechanism I has 6 layers of heat insulation screens, the right heat insulation mechanism I has 5 layers of heat insulation screens, the lower heat insulation mechanism I has 18 layers of heat insulation screens, the upper heat insulation module I has 6 layers of heat insulation screens, the left heat insulation module I has 5 layers of heat insulation screens, and the right heat insulation module I has 4 layers of heat insulation screens; The upper heat insulation mechanism II, the left heat insulation mechanism II, the right heat insulation mechanism II, the lower heat insulation mechanism II, the front heat insulation mechanism, and the rear heat insulation mechanism each have 8 layers of heat insulation screens, and the left heat insulation module II and the right heat insulation module II each have 3 layers of heat insulation screens; The upper insulation mechanism III has 2 layers of insulation screens, the left insulation mechanism III and the right insulation mechanism III each have 5 layers of insulation screens, the lower insulation mechanism III has 18 layers of insulation screens, the insulation module on the first pole has 1 layer of insulation screens, the insulation module on the second pole has 3 layers of insulation screens, the insulation module on the third pole has 4 layers of insulation screens, and the left insulation module III and the right insulation module III each have 1 layer of insulation screens.

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