CN109487180A - A kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board - Google Patents
A kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board Download PDFInfo
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- CN109487180A CN109487180A CN201811611756.4A CN201811611756A CN109487180A CN 109487180 A CN109487180 A CN 109487180A CN 201811611756 A CN201811611756 A CN 201811611756A CN 109487180 A CN109487180 A CN 109487180A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/04—Pretreatment of the fibres or filaments by coating, e.g. with a protective or activated covering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/56—Elongation control
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
- C22C49/06—Aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/10—Compression, e.g. longitudinal compression
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
A kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board, belong to non-ferrous metal preparation and applied technical field, it can solve the problems, such as that existing boron carbide is unfavorable for the mechanics ductility of material as ceramic particle, use aluminium powder, boron carbide powder, carbon fiber for raw material, through powder metallurgy base, it is rolled into fine and close stratiform aluminium base baffle, neutron absorption rate is up to 99%, interface is clearly demarcated between each layer, infiltration is good, particle is completely embedded with matrix, tensile strength reaches 260MPa, and extensibility is up to 14%.This preparation method technique is advanced, and method is reasonable, and parameter is full and accurate, mutually studied than before in terms of functional and mechanical property have be compared with quantum jump advanced preparation stratiform fibre reinforced aluminum-based boron carbide neutron absorption board method.
Description
Technical field
The invention belongs to non-ferrous metal preparation and applied technical fields, and in particular to a kind of stratiform fibre reinforced aluminium base carbon
Change the preparation method of boron neutron absorber plate.
Background technique
In today that neutron shielding material is widely used, B10By its cheap cost and higher neutron absorption cross-section
Obtain the favor of most manufacturers.The B of mainstream at present10Neutron-absorbing product is mostly made of boron carbide, aluminum-based boron carbide material
It is exactly wherein most frequently used one kind.However, the mechanics for being unfavorable for material as ceramic particle with regard to current boron carbide extends
This project of property causes social extensive concern.
Summary of the invention
The present invention is aiming at the problem that existing boron carbide is unfavorable for the mechanics ductility of material as ceramic particle, for nuclear power
The neutron ray shielding condition stood under spent fuel storage and transportation environment, is provided in a kind of stratiform fibre reinforced aluminum-based boron carbide
The preparation method of sub- baffle.
The present invention adopts the following technical scheme:
A kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board, includes the following steps:
The first step makes retractable die: using graphene production type chamber for the retractable die of rectangle, cavity dimension 30mm
× 30mm × 60mm, mold cavity surface roughness are Ra 0.08-0.16 μm；
Second step, surface treatment of carbon fibers: weighing 0.15 ± 0.01g of carbon fiber, and being cut into length is 3-8cm, uses acetone soak
After 5min, being soaked in water again after taking-up to carbon fiber can scatter, and dry after taking-up, be put into nitric acid reflux unit, at 60-70 DEG C
Under boil 0.5-2h, take out spare；
Third step claims powder: weighing the Al alloy powder of 10.2 ± 0.01g and the boron carbide powder of 1.1 ± 0.01g respectively；
Ball milling: Al alloy powder and boron carbide powder are put into ball milling in ball mill, rotational speed of ball-mill 200r/min, ball milling by the 4th step
Time is 60min, after ball milling, obtains mixed-powder；
Powdering: 5th step two is respectively placed in having a size of 30mm × 30mm × 0.5mm aluminium sheet the vessel for filling phosphoric acid solution
In, after doing phosphoric acid anodizing with 15V voltage energization 10min, take out；
Carbon fiber after surface treatment is mixed with 10mL ± 0.01mL polyimide resin, stirs evenly, obtains mixture, to
The alkoxy silane coupling agent of 10 ± 0.01ml is added in mixture, stirs evenly, obtains coat；
Any one side surface of two aluminium sheets after coat to be coated uniformly on to anodic oxidation respectively obtains carbon fiber coating
It is taken out after toasting 12h by two aluminium sheets after coating in 60 DEG C of baking ovens, obtains carbon fiber coated board in side；
6th step, it is die-filling: retractable die to be vertically arranged on steel plate, graphite pads are put in the bottom in retractable die
Block puts graphite paper on graphite cushion block top, 11.3 ± 0.01g of mixed-powder is placed on graphite paper, as first layer；
Carbon fiber coated board is placed on the first layer, and carbon fiber coat is upward, as the second layer；
Another carbon fiber coated board is placed on the second layer, and carbon fiber coat is downward, as third layer；
It is laid with graphite paper in third layer, graphite briquetting is placed on graphite paper；
Powder metallurgy sintered base: 7th step the retractable die equipped with sample is vertically moved into spark plasma sintering furnace
Lower electrode upper, have access to electricity pole compaction mold, closes fire door after fixing；
Chilled water system is opened, vacuum pump is opened, extracts furnace air, pressure in furnace is made to be lower than 5Pa；
Plasma discharge heater is opened, pressurized cooking process is divided to two sections of progress: opening plasma discharge heater, heating temperature
500±1℃；Cracking pressure motor vertically presses to open-close type mold cavity, pressure 20MPa, constant temperature and pressure 15min；
Stop heating, pressure, retractable die and its interior blank is made to be cooled to 25 DEG C；
Vacuum pump is closed, retractable die is taken out, opens mold, takes out blank, obtains stratiform fibre reinforced carbonization boron neutron
Absorb blank；
Cleaning treatment: 8th step stratiform fibre reinforced carbonization boron neutron-absorbing blank is placed on glass plate, is beaten with sand paper
Grind each portion；Blank is carried out clearly with dehydrated alcohol later；It takes out and is dried after washing later；
9th step, heating: cleaned stratiform fibre reinforced carbonization boron neutron-absorbing blank is placed in heat-treatment furnace,
Heated at constant temperature at 450 DEG C；
Rolling: stratiform fibre reinforced carbonization boron neutron-absorbing blank after heating is placed in the topping roll of roller mill by the tenth step
Between bottom roll, setting topping roll is rotated counterclockwise, and bottom roll opposite direction rotates clockwise, slewing rate 10r/min, rolling
Passage is 6 passages, and rolling reduction 60% after rolling, after being dried with washes of absolute alcohol, obtains the increasing of stratiform carbon fiber
Strong aluminum-based boron carbide neutron absorption board.
The molding of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board is carried out in vacuum hotpressing stove, tangible to add
It is completed during heat, vacuum, pressure, outer water circulating cooling:
Vacuum hotpressing stove be it is vertical, vacuum hotpressing stove lower part is pedestal, top be footstock, pedestal top be equipped with workbench, inside
For furnace chamber；The outside of vacuum hotpressing stove is surround by outer water circulating cooling pipe, and is connected by inlet valve, outlet valve and external water source；
Portion is equipped with mold lower cushion block on the table, puts graphite jig, the bottom in graphite jig in mold lower cushion block upper vertical
Graphite cushion block is put, upper graphite paper is put on graphite cushion block top, sets mixing fine powders, mixing fine powders top on upper graphite paper top
Aluminium sheet in placement keeps aluminium sheet coating upward；Lower aluminum sheet is put on upper aluminium sheet top；The graphite paper in the case where lower aluminum sheet top is put,
Graphite briquetting is put on lower graphite paper top, and graphite briquetting top is fastened by press machine briquetting, on press machine briquetting top and footstock
Pressure motor connection；It is equipped with vacuum pump in the lower left quarter of vacuum hotpressing stove, vacuum pump is connected to by vacuum tube with furnace chamber；True
The right part of empty hot pressing furnace be equipped with electric cabinet, on electric cabinet be equipped with display screen, indicator light, power switch, pressure electric machine controller,
Resistance heating controller, controller for vacuum pump, electric cabinet are connect by conducting wire with pressure motor, resistance heating wire, vacuum pump.
The polyimide resin mixture for being mixed with alkoxy silane is uniformly applied to the unilateral side of two layers of aluminium sheet with hairbrush, is made
At unilateral brushing aluminium sheet；Unilateral brushing aluminium sheet is placed in baking oven, sets 60 DEG C of oven temperature, is toasted 12 hours；It is taken out after drying
It can be made into carbon fiber coated board, the side to overturn that carbon fiber coated board is coated with mixture be allowed to opposite.
Beneficial effects of the present invention are as follows:
Have the characteristics that good mechanical property using carbon fiber, it be mixed between aluminium sheet founding after aluminum-based boron carbide,
Have the characteristics that good neutron-reflecting property using the carbon in carbon fiber simultaneously, enhances reflection of the neutron among plate
Channel enhances absorptivity while enhancing mechanical property to increase the collision frequency with boron carbide.Further, this hair
The bright preparation method referred to is low in cost, and method is easy, and linkage interface is clearly demarcated between layers, mutually relatively before patent research tool
There is the biggish breakthrough with better neutron-absorbing performance and stronger tensile resistance, is a kind of advanced neutron absorber plate
Preparation method.
The present invention, which compares the status that background technique is proposed, has apparent advance, is for Nuclear Power Station's Exhausted Fuels memory location
The environmental condition of frame neutron irradiation shielding, uses aluminium powder, boron carbide powder, carbon fiber for raw material, through powder metallurgy base, is rolled into
Fine and close stratiform aluminium base baffle, neutron absorption rate is up to 99%, and interface is clearly demarcated between each layer, and infiltration is good, and particle is connect with matrix
Closely, tensile strength reaches 260MPa, and extensibility is up to 14%.Mutually studied than before in terms of functional and mechanical property have it is larger
It breaks through, is the method for advanced preparation stratiform fibre reinforced aluminum-based boron carbide neutron absorption board.
Detailed description of the invention
Fig. 1 is the die-filling schematic diagram of stratiform fibre reinforced aluminum-based boron carbide neutron absorber material of the present invention；
Fig. 2 is the preparation process schematic diagram of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board of the present invention；
Fig. 3 is that the absorption interface of the fibre reinforced aluminum-based boron carbide neutron absorption board of preparation of the embodiment of the present invention is layered pattern
Figure；
Fig. 4 is the stretching fracture shape appearance figure of the fibre reinforced aluminum-based boron carbide neutron absorption board of preparation of the embodiment of the present invention；
Wherein: 1- vacuum hotpressing stove；2- pedestal；3- footstock；4- resistance heater；5- press machine briquetting；6- pressure motor；7- is true
Sky pump；8- vacuum tube；The outer water circulating cooling pipe of 9-；10- graphite jig；11- mold lower cushion block；The upper graphite paper of 12-；Stone under 13-
Black paper；14- mixing fine powders；The upper aluminium sheet of 15-；16- aluminium sheet coating；17- lower aluminum sheet；18- graphite briquetting；19- inlet valve；20- goes out
Water valve；21- conducting wire；22- furnace chamber；23- electric cabinet；24- display screen；25- indicator light；26- power switch；27- pressure motor control
Device processed；28- resistance heating controller；29- controller for vacuum pump；30- workbench；31- graphite cushion block；32- polyimide resin；
33- aluminium sheet；The unilateral side 34- brushing aluminium sheet；35- baking oven；36- carbon fiber coated board.
Specific embodiment
Embodiment
The chemical substance material used are as follows: Al alloy powder, boron carbide powder, carbon fiber, acetone, nitric acid, phosphoric acid, polyimides
It is as follows to prepare dosage: being measurement unit with gram, milliliter, millimeter for resin, alkoxy silane, dehydrated alcohol, graphite paper.
Al alloy powder, 6061Al:10.2g ± 0.01g, aluminium sheet, 6061Al: 30mm × 30mm × 0.5mm × 2, carbonization
Boron powder, B4C:10g ± 0.01g, carbon fiber, C:10g ± 0.01g, phosphoric acid, H3P04: 1000mL ± 0.1mL, acetone, CH3COCH3:
10mL ± 0.1mL, polyimide resin, C35H28N2O7: 10mL ± 0.1mL, alkoxy silane, YSiX3: 10mL ± 0.1mL, nitre
Acid, HNO3: 10mL ± 0.1mL, dehydrated alcohol, C2H5OH:1000mL ± 10mL, graphite paper, C:30mm × 30mm × 1mm 2.
It is the hot-forming state diagram of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board shown in Fig. 1, each position connects
It connects, positional relationship will be matched correctly according to quantity, ordered operation.
The molding of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board is carried out in vacuum hotpressing stove, tangible to add
It is completed during heat, vacuum, pressure, outer water circulating cooling:
Vacuum hotpressing stove be it is vertical, vacuum hotpressing stove lower part is pedestal 2, top be footstock 3,2 top of pedestal be equipped with workbench 30,
Inside is furnace chamber 22；The outside of vacuum hotpressing stove 1 is surround by outer water circulating cooling pipe 9, and by inlet valve 19, outlet valve 20 and outer
The connection of water receiving source；It is equipped with mold lower cushion block 11 on 30 top of workbench, puts graphite jig in 11 upper vertical of mold lower cushion block
10, graphite cushion block 31 is put in bottom in graphite jig, upper graphite paper 12 is put on 31 top of graphite cushion block, in upper graphite paper 12
Mixing fine powders 14 are set on top, and upper aluminium sheet 15 is placed on 14 top of mixing fine powders, keep aluminium sheet coating 16 upward；It is set on upper 15 top of aluminium sheet
Put down aluminium sheet 17；The graphite paper 13 in the case where 17 top of lower aluminum sheet is put puts graphite briquetting 16, graphite pressure on lower 13 top of graphite paper
16 top of block is fastened by press machine briquetting 5, and 5 top of press machine briquetting is connect with the pressure motor 6 on footstock 3；In vacuum hotpressing
The lower left quarter of furnace 1 is equipped with vacuum pump 7, and vacuum pump 7 is connected to by vacuum tube 8 with furnace chamber 22；It is equipped in the right part of vacuum hotpressing stove 1
Electric cabinet 23 is equipped with display screen 24, indicator light 25, power switch 26, pressure electric machine controller 27, resistance on electric cabinet 23 and adds
Heat controller 28, controller for vacuum pump 29, electric cabinet 23 are connected by conducting wire 21 and pressure motor 6, resistance heating wire 4, vacuum pump 7
It connects.
It is stratiform fibre reinforced aluminum-based boron carbide neutron absorption board powdering procedure chart, sequence is spread as illustrated shown in Fig. 2
Powder guarantees that direction is errorless.
32 mixture of polyimide resin for being mixed with alkoxy silane is uniformly applied to the list of two layers of aluminium sheet 33 with hairbrush
Unilateral brushing aluminium sheet 34 is made in side；Unilateral brushing aluminium sheet 34 is placed in baking oven 35, sets 60 DEG C of oven temperature, is toasted 12 hours；
Taking out after drying can be made into carbon fiber coated board 36, and the side to overturn that carbon fiber coated board 36 is coated with mixture is allowed to phase
It is right.
Neutron absorption rate detection and analysis are carried out with neutron fluence rate instrument；
Microstructure morphology analysis is carried out with scanning electron microscope；
It is analyzed with universal testing machine tensile strength；
Shown in Fig. 3, it is layered shape appearance figure for stratiform fibre reinforced aluminum-based boron carbide neutron absorption board absorption interface, as seen from the figure,
Interface is clearly demarcated between each layer of the plate, and infiltration is good.
It is stratiform fibre reinforced aluminum-based boron carbide neutron absorption board stretching fracture shape appearance figure shown in Fig. 4, as seen from the figure,
Plate tensile strength 260MPa, elongation 14%, tensile resistance is good.
The stratiform fibre reinforced aluminum-based boron carbide neutron absorption board of preparation is packed with soft material, is stored in dry ring
Border avoids soda acid from corroding, 20 DEG C of storage temperature most suitable, relative humidity 10%.
Claims (2)
1. a kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board, it is characterised in that: including walking as follows
It is rapid:
The first step makes retractable die: using graphene production type chamber for the retractable die of rectangle, cavity dimension 30mm
× 30mm × 60mm, mold cavity surface roughness are Ra 0.08-0.16 μm；
Second step, surface treatment of carbon fibers: weighing 0.15 ± 0.01g of carbon fiber, and being cut into length is 3-8cm, uses acetone soak
After 5min, being soaked in water again after taking-up to carbon fiber can scatter, and dry after taking-up, be put into nitric acid reflux unit, at 60-70 DEG C
Under boil 0.5-2h, take out spare；
Third step claims powder: weighing the Al alloy powder of 10.2 ± 0.01g and the boron carbide powder of 1.1 ± 0.01g respectively；
Ball milling: Al alloy powder and boron carbide powder are put into ball milling in ball mill, rotational speed of ball-mill 200r/min, ball milling by the 4th step
Time is 60min, after ball milling, obtains mixed-powder；
Powdering: 5th step two is respectively placed in having a size of 30mm × 30mm × 0.5mm aluminium sheet the vessel for filling phosphoric acid solution
In, after doing phosphoric acid anodizing with 15V voltage energization 10min, take out；
Carbon fiber after surface treatment is mixed with 10mL ± 0.01mL polyimide resin, stirs evenly, obtains mixture, to
The alkoxy silane coupling agent of 10 ± 0.01ml is added in mixture, stirs evenly, obtains coat；
Any one side surface of two aluminium sheets after coat to be coated uniformly on to anodic oxidation respectively obtains carbon fiber coating
It is taken out after toasting 12h by two aluminium sheets after coating in 60 DEG C of baking ovens, obtains carbon fiber coated board in side；
6th step, it is die-filling: retractable die to be vertically arranged on steel plate, graphite pads are put in the bottom in retractable die
Block puts graphite paper on graphite cushion block top, 11.3 ± 0.01g of mixed-powder is placed on graphite paper, as first layer；
Carbon fiber coated board is placed on the first layer, and carbon fiber coat is upward, as the second layer；
Another carbon fiber coated board is placed on the second layer, and carbon fiber coat is downward, as third layer；
It is laid with graphite paper in third layer, graphite briquetting is placed on graphite paper；
Powder metallurgy sintered base: 7th step the retractable die equipped with sample is vertically moved into spark plasma sintering furnace
Lower electrode upper, have access to electricity pole compaction mold, closes fire door after fixing；
Chilled water system is opened, vacuum pump is opened, extracts furnace air, pressure in furnace is made to be lower than 5Pa；
Plasma discharge heater is opened, pressurized cooking process is divided to two sections of progress: opening plasma discharge heater, heating temperature
500±1℃；Cracking pressure motor vertically presses to open-close type mold cavity, pressure 20MPa, constant temperature and pressure 15min；
Stop heating, pressure, retractable die and its interior blank is made to be cooled to 25 DEG C；
Vacuum pump is closed, retractable die is taken out, opens mold, takes out blank, obtains stratiform fibre reinforced carbonization boron neutron
Absorb blank；
Cleaning treatment: 8th step stratiform fibre reinforced carbonization boron neutron-absorbing blank is placed on glass plate, is beaten with sand paper
Grind each portion；Blank is carried out clearly with dehydrated alcohol later；It takes out and is dried after washing later；
9th step, heating: cleaned stratiform fibre reinforced carbonization boron neutron-absorbing blank is placed in heat-treatment furnace,
Heated at constant temperature at 450 DEG C；
Rolling: stratiform fibre reinforced carbonization boron neutron-absorbing blank after heating is placed in the topping roll of roller mill by the tenth step
Between bottom roll, setting topping roll is rotated counterclockwise, and bottom roll opposite direction rotates clockwise, slewing rate 10r/min, rolling
Passage is 6 passages, and rolling reduction 60% after rolling, after being dried with washes of absolute alcohol, obtains the increasing of stratiform carbon fiber
Strong aluminum-based boron carbide neutron absorption board.
2. a kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board according to claim 1,
Be characterized in that: layered fibre reinforced aluminum-based boron carbide neutron absorption board molding is carried out in vacuum hotpressing stove, real
It is completed during heating, vacuum, pressure, outer water circulating cooling:
Vacuum hotpressing stove be it is vertical, vacuum hotpressing stove lower part be pedestal (2), top is footstock (3), pedestal (2) top equipped with work
Make platform (30), is internal for furnace chamber (22)；The outside of vacuum hotpressing stove (1) is surround by outer water circulating cooling pipe (9), and by inlet valve
(19), outlet valve (20) is connect with external water source；Mold lower cushion block (11) are equipped on workbench (30) top, in mold lower cushion block
(11) upper vertical puts graphite jig (10), and graphite cushion block (31) are put in bottom in graphite jig, in graphite cushion block (31)
Upper graphite paper (12) are put on top, are set mixing fine powders (14) on upper graphite paper (12) top, in the placement of mixing fine powders (14) top
Aluminium sheet (15) keeps aluminium sheet coating (16) upward；Lower aluminum sheet (17) are put on upper aluminium sheet (15) top；It is set on lower aluminum sheet (17) top
Graphite paper (13) are put down, put graphite briquetting (16) on lower graphite paper (13) top, graphite briquetting (16) top is by press machine pressure
Block (5) fastens, and press machine briquetting (5) top is connect with the pressure motor (6) on footstock (3)；In the lower-left of vacuum hotpressing stove (1)
Portion is equipped with vacuum pump (7), and vacuum pump (7) is connected to by vacuum tube (8) with furnace chamber (22)；It is set in the right part of vacuum hotpressing stove (1)
There are electric cabinet (23), display screen (24), indicator light (25), power switch (26), pressure motor control are equipped on electric cabinet (23)
Device (27) processed, resistance heating controller (28), controller for vacuum pump (29), electric cabinet (23) pass through conducting wire (21) and pressure motor
(6), resistance heating wire (4), vacuum pump (7) connection.
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| CN201811611756.4A CN109487180A (en) | 2018-12-27 | 2018-12-27 | A kind of preparation method of stratiform fibre reinforced aluminum-based boron carbide neutron absorption board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798941A (en) * | 2019-03-14 | 2019-05-24 | 上海交通大学 | CFRP die forming and CFRP/ metallic composite panel single step co-curing shape test device |
| CN110085341A (en) * | 2019-05-16 | 2019-08-02 | 中国人民大学 | A kind of neutron monochromator shielding device |
| CN111892402A (en) * | 2019-05-05 | 2020-11-06 | 中南大学 | Carbon fiber cloth reinforced boron carbide composite material and preparation method and application thereof |
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| CN108468002A (en) * | 2018-04-11 | 2018-08-31 | 太原理工大学 | A kind of preparation method of stratiform aluminium base neutron absorber plate |
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| CN110085341B (en) * | 2019-05-16 | 2023-12-15 | 中国人民大学 | Neutron monochromator shielding device |
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