CN109358087A - Material at high temperature directional solidification experimental provision and experimental method under a kind of Elevated Gravity - Google Patents
Material at high temperature directional solidification experimental provision and experimental method under a kind of Elevated Gravity Download PDFInfo
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- CN109358087A CN109358087A CN201811417528.3A CN201811417528A CN109358087A CN 109358087 A CN109358087 A CN 109358087A CN 201811417528 A CN201811417528 A CN 201811417528A CN 109358087 A CN109358087 A CN 109358087A
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- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000007711 solidification Methods 0.000 title claims abstract description 34
- 230000008023 solidification Effects 0.000 title claims abstract description 34
- 230000005484 gravity Effects 0.000 title claims abstract description 28
- 238000002474 experimental method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 78
- 239000000758 substrate Substances 0.000 claims abstract description 59
- 239000003708 ampul Substances 0.000 claims abstract description 48
- 230000003750 conditioning effect Effects 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 45
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910000629 Rh alloy Inorganic materials 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 claims description 3
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 239000000956 alloy Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- -1 W-Re Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000007418 data mining Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
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- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
Abstract
The present invention provides material at high temperature directional solidification experimental provision and experimental method under a kind of Elevated Gravity, has: the centrifuge unit with the first experimental considerations unit and the second experimental considerations unit；It is installed on the ampoule unit of the first experimental considerations unit；Temperature conditioning unit；And control unit；Ampoule unit has: ampoule casing, the nested fusible substrate storehouse for being installed on the secondary heating component of ampoule casing inside bottom, being installed at secondary heating component upper opening with hollow cavity, the fusible substrate being placed in the hollow cavity in fusible substrate storehouse, the crucible pipe being nested into inside ampoule casing and fusible substrate storehouse and the main heating component between ampoule casing and crucible pipe；In the hollow cavity for the secondary heating component for flowing into lower section after fusible substrate melting.According to the present invention it is possible to simply and easily realizing directional solidification of the specimen material in hypergravity under the conditions of without using peripheral hardwares such as mechanical transmission mechanisms and motor such as gear screw rods.
Description
Technical field
The present invention relates to material at high temperature directional solidification studying technological domains under Elevated Gravity, and in particular to a kind of hypergravity
Material at high temperature directional solidification experimental provision and experimental method under environment.
Background technique
Directional solidification is to be set up in the non-solidified melt of frozen metal sample along spy in process of setting using compulsive means
Determine the temperature gradient in direction, thus make melt in gas wall after forming core along the direction opposite with hot-fluid, crystallization as required takes
To the technology solidified.The sharpest edges of directional solidification technique are that the alloy material of preparation eliminates matrix phase and increases
Influence between strong phase phase interface, effectively improves the comprehensive performance of alloy.Meanwhile the technology is also that scholars study solidification
The theoretical important means with metal freezing rule.The technology is established and is improved in the development of high temperature alloy.
Using, to develop the technology initially be for eliminating the transverse grain boundaries generated in crystallization process, to improve the unidirectional mechanics of material
Performance.Directional solidification technique to the research of the solidification theory of metal and the development of novel high-temperature alloy etc. provide one it is extremely effective
Means.
Different from the solidification of the pure of usual material and casting, the realization of directional solidification experiment is required through motor, machine
The peripheral hardwares such as structure realize decline or the mobile experiment purpose to reach directional solidification of thermal field, and under Elevated Gravity using motor and
The engineering difficulty of mechanism is very big, and the space in centrifuge component is also limited.The hypergravity ring caused by centrifuge at present
The solidification of material pure is had been realized under border, is but difficult to realize the scientific experiment of controllable material directional solidification, but as above-mentioned,
Directional solidification experiment itself has great significance to materialogy research.
Summary of the invention
Problems to be solved by the invention:
It can be controllable without using external equipment and under Elevated Gravity in view of the above-mentioned problems, the purpose of the present invention is to provide one kind
The device and experimental method of ground progress material at high temperature directional solidification experiment.
Technical means to solve problem:
The present invention provides material at high temperature directional solidification experimental provision under a kind of Elevated Gravity, has:
Centrifuge unit with the first experimental considerations unit and with the second experimental considerations unit of the first experimental considerations unit mirror image counterweight；
It is installed on the ampoule unit of first experimental considerations unit；
The temperature conditioning unit of control device temperature；With
The control unit that the temperature conditioning unit and the centrifuge unit are controlled；
The ampoule unit has: with the ampoule casing of hollow cavity, nesting be installed on the ampoule casing inside bottom and
Secondary heating component with hollow cavity, be installed on it is at the secondary heating component upper opening and fusible with hollow cavity
Substrate storehouse, the fusible substrate being placed in the hollow cavity in the fusible substrate storehouse, is nested into the ampoule casing and institute
It states the crucible pipe abutted inside fusible substrate storehouse and with the upper surface of fusible substrate and is set to the ampoule casing and institute
State the main heating component between crucible pipe；
It is flowed into after the fusible substrate melting in the hollow cavity of the secondary heating component of lower section.
According to the present invention, the experimental provision for making material at high temperature directional solidification under a kind of Elevated Gravity is provided, by right
Ampoule unit used in material experiment sample carries out systemic improvement, using ampoule casing as outer support members, by main heating group
The component integrations such as part, secondary heating component, crucible pipe, fusible substrate storehouse are integrated, and form the main part of the experimental provision, from
And it can simply and easily realize that specimen material exists without using peripheral hardwares such as mechanical transmission mechanisms and motor such as gear screw rods
Directional solidification under the conditions of hypergravity.Therefore, material directional solidification can not be carried out by conventional means under hypergravity by solving
Experiment, have very important scientific meaning.
It is also possible in the present invention, the main heating component includes: main heating member, is wound on the main heating member
Main resistive heater and main heated for controlling temperature thermocouple；The pair heating component includes: secondary heating member, is wound in the secondary heating member
On secondary resistive heater and secondary heated for controlling temperature thermocouple.Thus, it is possible to the heating system of two sets of independent controls be formed, to super
Realize that directional solidification experiment provides crucial system and supports under gravity environment.
Be also possible in the present invention, on the ampoule casing, respectively with the main heating component and the secondary heating group
The hole for drawing resistive heater electrode and the hole for installing thermocouple are formed on the corresponding position of part.
It is also possible in the present invention, the ampoule casing is formed by high purity aluminium oxide or toughened zirconium oxide material.As a result,
The ampoule casing of the above material production can be under the harsh experimental situation that hypergravity and high temperature act on simultaneously, still to heating system
System and laboratory sample offer are effectively protected.
It is also possible in the present invention, the fusible substrate orlop portion offers hollow interior with the secondary heating component
The fistulae hole of chamber connection, and the fusible substrate storehouse is double fillet back cover structures.Double fillet back cover structures can be formed as a result,
A kind of structure disperses of similar vault generated pressure itself under Elevated Gravity, and bottom fistulae hole can be according to imitative
True calculate opens up from the aperture that 0.1mm ~ 5mm is not waited, and is conducive to adjust according to Experiment of Material Science requirement by the size in aperture
Save the speed that sample removes high-temperature region.
It is also possible in the present invention, the fusible substrate is high-intensitive pressure-resistant glass, compression strength is 650 ~
1900Mpa.It can meet as a result, and soften or melt easily since bottom after mechanical requirements under hypergravity and heating
Characteristic, and can be utilized again with refuse after testing, high recycling rate.
It is also possible in the present invention, the main heating member and the secondary heating member are high purity aluminium oxide, the main heating electricity
Hindering silk and the secondary resistive heater is W-Re, tungsten, molybdenum or platinum-rhodium alloy.It can be embodied under Elevated Gravity as a result, excellent
Mechanical property, and as heater, its service life can also reach thousands of hours, high reliablity to high temperature refractory.
It is also possible in the present invention, the main heated for controlling temperature thermocouple and the secondary heated for controlling temperature thermocouple are platinum rhodium 40
Or Wolfram rhenium heat electric couple.
It is also possible in the present invention, the crucible pipe is high purity aluminium oxide, and lower end carries out thickening processing.It thickeies as a result,
Bottom have heat insulating function, so that brought shadow when being heated at high temperature to fusible substrate can be eliminated during the experiment
It rings, and plays certain supporting role to hydraulic caused by liquefied material during the experiment.
The present invention provides material at high temperature directional solidification experimental method under a kind of Elevated Gravity, in scheduled super gravity field
Under, it first passes through the main heating component and the material in the crucible pipe is heated, after reaching the set temperature, then lead to
Crossing the secondary heating component and heat to the fusible substrate in the fusible substrate storehouse melts it controllably, melts
The fusible substrate afterwards is flowed under the influence of gravity in the cavity of downside, and the crucible pipe gradually moves down therewith, thus office
The material that high-temperature region is left in portion realizes directional solidification.
According to the present invention, under centrifuge working condition, after reaching preset gravity value, add by the way that temperature conditioning unit control is main
Hot component heat run specimen material opens secondary heating component by temperature conditioning unit after material reaches set temperature, fusible
Fusible substrate in substrate storehouse is gradually melted by bottom, and the fusible substrate of fusing flows out under the influence of gravity, material
Material also moves down the high-temperature region for leaving main heating component to part therewith, realizes the controllable directional solidification of material under hypergravity.
Invention effect:
The present invention can provide one kind and not use external equipment and can controllably carry out material at high temperature orientation under Elevated Gravity and coagulate
Solid experiment device and experimental method.
Detailed description of the invention
Fig. 1 is the structural schematic diagram under the experimental state of experimental provision according to the present invention；
Fig. 2 is the structure sectional view of the ampoule unit of experimental provision according to the present invention；
Symbol description:
1 ampoule casing；
2 main heating members；
3 main resistive heaters；
4 main heated for controlling temperature thermocouples；
5 crucible pipes；
6 experimental subjects materials；
7 fusible substrate storehouses；
8 fusible substrates；
9 secondary heating members；
10 secondary resistive heaters；
11 secondary heated for controlling temperature thermocouples；
12 insulation components；
13 hanging baskets；
14 I-shaped arms；
15 hanging basket axis；
16 heater strip electrode bus；
17 conducting slip rings；
18 second experimental considerations units；
19 thermocouple probes buses；
20 temperature conditioning units；
21 conducting slip ring output bus；
22 control units；
23 first experimental considerations units.
Specific embodiment
The present invention is further illustrated below in conjunction with following embodiments, it should be appreciated that following embodiments are merely to illustrate this
Invention, is not intended to limit the present invention.Identical in the various figures or corresponding appended drawing reference indicates the same part, and omits repeated explanation.
Meanwhile following implementation form is served only for that invention is further explained, should not be understood as the limit to the scope of the present invention
System, some nonessential modifications and adaptations that those skilled in the art's above content according to the present invention is made belong to this hair
Bright protection scope.Following specific technological parameters of example etc. are also only an example in OK range, i.e. art technology
Personnel can be done in suitable range by the explanation of this paper and be selected, and not really want to be defined in hereafter exemplary specific value.
It is disclosed a kind of directional solidification experimental provision, Fig. 1 is under the experimental state of experimental provision according to the present invention
Structural schematic diagram, Fig. 2 are the structure sectional views of the ampoule unit of experimental provision according to the present invention.As shown in Figure 1, experimental provision
Have centrifuge unit A, ampoule unit B, temperature conditioning unit 20 and control unit 22.Wherein, centrifuge unit A, which has, is equipped with
First experimental considerations unit 23 of small jar unit B and the second experimental considerations unit 18 with 23 mirror image counterweight of the first experimental considerations unit.
Specifically, in this implementation form, centrifuge unit A selects I-shaped centrifuge, and both ends are formed with I-shaped arm 14, should
The hanging basket 13 for being respectively equipped with hanging basket axis 15 on two I-shaped arms 14 and being supported by hanging basket axis 15, and further set in hanging basket 13
There is insulation component 12, the first experimental considerations unit 23 and the second experimental considerations unit 18 is consequently formed.Second experimental considerations unit 18 is I-shaped
Necessity configuration of type centrifuge, purpose are balance both arms, that is, require the quality of two hanging baskets 13 and mass center should be substantially suitable, thus
The gravitational field of experiment setting could effectively be generated.Those the relevant technologies and index using existing centrifuge production requirement as standard,
As long as being able to satisfy required gravitational field, centrifuge on sale all be can be used on the market.
As shown in Figure 1, ampoule unit B is vertically arranged to the insulation component 12 in the hanging basket 13 of the first experimental considerations unit 23
It is interior.Specifically, as shown in Fig. 2, ampoule unit B include: as outer support members ampoule casing 1, be nested into ampoule casing 1
It is internal and with its bottom retain the crucible pipe 5 for having certain space, the main heating component between ampoule casing 1 and crucible pipe 5,
It is installed on the secondary heating component of 1 inside bottom of ampoule casing and is installed between 5 exterior bottom of secondary heating component and crucible pipe
Fusible substrate storehouse 7.Fusible substrate 8 is contained in fusible substrate storehouse 7, is placed with experimental subjects material 6 in crucible pipe 5.
Wherein, main heating component further comprises: main heating member 2, main resistive heater 3 and main heated for controlling temperature thermocouple 4.
Correspondingly, secondary heating component further comprises: secondary heating member 9, secondary resistive heater 10 and secondary heated for controlling temperature thermocouple 11.At this
In implementation form, ampoule casing 1 is formed as hollow and fillet back cover cylindrical structure, and respectively with main heating component with and
On the corresponding position of secondary heating component, being formed in side there are two the hole for drawing heater strip electrode (is left in diagram
Side), size may be, for example, 1mm-5mm, and in other side formation, there are two the hole (being right side in diagram) for installing thermocouple, rulers
Very little to may be, for example, 2mm-6mm, furthermore ampoule casing 1 is preferably formed by high purity aluminium oxide, and wall thickness is preferably 2mm-5mm, but above-mentioned
Size is not limited to this.
In addition, the high purity aluminium oxide of the material as ampoule casing 1 is in this embodiment, purity is 99% ~ 99.9%, is led to
Oversintering production.It is still able to maintain good mechanical property to high-purity alumina ceramic part at high temperature, at 1000 degrees Celsius
Lower tension, which is still able to maintain, to be still able to maintain in 170Mpa or so, elasticity modulus in 275Gpa.In addition, toughening oxidation also may be selected
Zirconia material can reach 800Mpa in 1200 degrees Celsius of lower compression strength, and density is bigger than high purity aluminium oxide, therefore finished product weight
Amount will will be weighed with respect to high purity aluminium oxide.
As shown in Fig. 2, secondary heating component is embedded in and is installed on the inside bottom of ampoule casing 1, during secondary heating member 9 is formed as
Empty and fillet vault construction back cover cylindrical structure, outside are formed with thread groove to uniform winding pair resistive heater 10,
Its open-ended place is equipped with stepped plate 9a for installing fusible substrate storehouse 7.Secondary heating member 9 should be high temperature ceramic material,
The present invention consider the mechanical property under Elevated Gravity and preferably purity be 99% ~ 99.9% high purity aluminium oxide, and screw thread
The width of slot can adaptively increase 0.2mm according to secondary 10 string diameter of resistive heater, but not limited to this.Secondary resistive heater 10
Selection should be high-strength high temperature-resistant refractory metal, such as W-Re, tungsten, molybdenum, platinum-rhodium alloy etc., and string diameter can be selected according to resistive arrangement
0.5mm-1.2mm specification, but not limited to this.Also, secondary resistive heater 10 can be in thread groove after being installed in this implementation form
Surface uniformly applies and spreads high-strength alumina ceramic glue, to reinforce overall structure, is placed in again after secondary 9 integrally curing of heating component
1 bottom of ampoule casing is then drawn in the hole by the electrode of secondary heating member 9 by 1 downside of ampoule casing.
Also, fusible substrate storehouse 7 is formed as the cylindrical structure of hollow and double fillet vault construction back covers, and lower part is formed
There is the boss portion 7a chimeric with the secondary stepped part 9a phase of heating member 9, the fistulae hole 7b of 0.2mm-5mm is offered among bottom, is used
It exports in by the fusible substrate 8 of fusing to the hollow cavity of secondary heating member 9.
It is the circle of solid fillet bottom structure under 8 normality of fusible substrate being stored in the hollow cavity in fusible substrate storehouse 7
Cylinder has selected high-intensitive pressure-resistant glass in this implementation form, after can meeting the mechanical requirements under hypergravity and heating
The characteristic for softening or melting easily since bottom, but selection is without being limited thereto, can be needed and be selected according to actual design.Also, fusible
Melt 8 height of substrate should the hollow cavity in fusible substrate storehouse 7 it is interior height on subtract 2mm-5mm, thus reserve certain space with
Aftermentioned crucible pipe 5 is just installed.
Also, crucible pipe 5 is formed as hollow and fillet bottom structure cylindrical structure, and it is inserted vertically into fusible substrate storehouse
In 7, outer diameter is bonded with the internal diameter of the hollow cavity in fusible substrate storehouse 7, and bottom is bonded with the end face of fusible substrate 8.This
In implementation form, crucible pipe 5 is high purity aluminium oxide material, and the back cover of lower end has carried out thickening processing, to have heat-insulated function
Can, brought influence when being heated at high temperature on fusible substrate 8 thus can be eliminated during the experiment.As crucible pipe 5
Material high purity aluminium oxide in this embodiment, purity be 99% ~ 99.9%, by sintering make, crucible pipe 5 is according to reality
Service condition bottom (i.e., lower end) thickness can be 5mm ~ 100mm.
It is placed with experimental subjects material 6 in crucible pipe 5, may be, for example, non-gold ceramics or metal class, but not limited to this.Experiment pair
As material 6 should have structure corresponding with 5 inner hollow chamber of crucible pipe, that is, answering preprocessing is the solid cylinder of fillet bottom structure
Body, and outer diameter is consistent with the internal diameter of crucible pipe 5.
In this implementation form, main resistive heater 3 should be high-strength high-temperature refractory metal, such as W-Re, tungsten, molybdenum, platinum rhodium
Alloy etc., string diameter can select 0.5mm-1.2mm specification according to resistive arrangement, but not limited to this, after main resistive heater 3 is powered
The experimental subjects material 6 of crucible pipe 5 and its inside can be heated.Main heating member 2 is formed as hollow cylindrical structure,
Its outside is formed with the thread groove for the main resistive heater 3 of coiling, and the width of thread groove is adapted to than main 3 string diameter of resistive heater
Property increase 0.2mm, material is high purity aluminium oxide, but not limited to this.Specifically, main 3 uniform winding of resistive heater is added main
In the thread groove of warmware 2, high-strength alumina ceramic glue is uniformly smeared in screw thread rooved face after the completion of winding, to reinforce whole knot
Structure is just closely nested between experiment crucible pipe 5 and ampoule casing 1 after main heating component integrally curing, then by main heating
The electrode of component is drawn by the hole of 1 upside of ampoule casing.
So far, the main structure of ampoule unit B is substantially complete, and secondary heating component is mounted on 1 bottom of ampoule casing, and pair adds
It is fusible substrate storehouse 7 above hot component, is fusible substrate 8 inside fusible substrate storehouse 7, fusible 8 support pad of substrate is in earthenware
Under crucible pipe 5, main heating component is wrapped in except crucible pipe 5.Then, respectively from the hole of the other side of ampoule casing 1 accordingly
It is inserted into main heated for controlling temperature thermocouple 4 and secondary heated for controlling temperature thermocouple 11.In this implementation form, which should be selected
The material of high temperature resistance and high strength, such as platinum rhodium 40 or Wolfram rhenium heat electric couple etc., string diameter is preferably 0.3mm-1mm, but is not limited to this.
As shown in Figure 1, the two groups of heater strip electrodes and thermocouple probes drawn out of ampoule casing 1 four holes respectively
Two groups of heater strip electrode bus 16 and two groups of thermocouple probes buses 19, specific road are respectively formed by zigzag path mode
Diameter mode is without being limited thereto.The centre of centrifuge unit A is nearby additionally provided with respectively to two heating components in ampoule unit B
The conducting slip ring 17 controlled, two groups of buses of two-way 16,19 are connect by 14 two sides of I-shaped arm with conducting slip ring 17, and are passed through
Conducting slip ring output bus 21 is connect with temperature conditioning unit 20 and control unit 22 respectively, at the same time, temperature conditioning unit 20 and control
Unit 22 is connected, such as is connected by RS485 bus (not shown).
In this implementation form, temperature control method is specific as follows: main heated for controlling temperature thermocouple 4 and secondary heated for controlling temperature thermocouple 11 are logical
It crosses conducting wire and is connected to conducting slip ring 17, then 17 conducting wire of conducting slip ring is connected to temperature conditioning unit 20 and obtains the real-time millivolt of thermocouple
Voltage signal is simultaneously converted to corresponding temperature value and carries out adjusting to output voltage by fuzzy mathematics algorithm, the electricity after adjusting
Pressure is respectively acting on main resistive heater 3 and secondary resistive heater 10 again by 17 system of conducting slip ring, is realized real-time
Temperature control.And computer is connected by RS485 bus (not shown) and temperature-controlling system acquires the temperature in experimentation in real time
Data analysis and data mining after being worth and being stored in the hard disk of computer system to test.
In concrete operations, control unit 22 sets and starts centrifuge unit A, the I-shaped arm 14 of centrifuge after receiving instruction
Start high speed rotation to generate gravitational field, control unit 22 refers to the sending of temperature conditioning unit 20 after reaching the gravity value of setting
Enable, temperature conditioning unit 20 receive start after instruction main heating component the experimental subjects material 6 in crucible pipe 5 is begun to warm up until
The experimental temperature of setting is issued to temperature conditioning unit 20 by control unit 22 instruct at this time, and temperature conditioning unit 20 opens after receiving instruction
Dynamic pair heating component controllably heats the bottom face of the fusible substrate 8 in fusible substrate storehouse 7, so that its bottom is opened
Beginning gradually melts, and the fusible substrate 8 melted flows into pair by the fistulae hole 7b in fusible substrate storehouse 7 under the influence of gravity
In the hollow cavity of heating member 9.Fusible substrate 8 slowly moves down as a result, drives entire crucible pipe 5 also to move down therewith, final crucible
A part of experimental subjects material 6 in pipe 5 will remove high-temperature region caused by original main heating member 2, and then realize super
The purpose of material directional solidification under gravity environment.
To sum up, the prior art ratio for solidifying and casting with the pure of the existing material under super gravity field, is able to achieve super
The directional solidification of material under gravity environment, and the controllable fixed of material need to be just able to achieve by peripheral hardwares such as motor, mechanisms with existing
It is compared to the prior art of solidification, the present invention had both been able to achieve the controllable of material under super gravity field independent of any external equipment and has determined
To solidification, it reduces greatly experiment difficulty, significantly improve operability, very significant in research field.
Above specific embodiment has carried out further specifically the purpose of the present invention, technical scheme and beneficial effects
It is bright, it should be appreciated that the above is only a kind of specific embodiments of the invention, however it is not limited to protection model of the invention
It encloses, under the objective for not departing from essential characteristic of the invention, the present invention can be presented as diversified forms, therefore the implementation in the present invention
Form is to be illustrative rather than definitive thereof, and is limited since the scope of the present invention is defined by the claims rather than by specification, Er Qieluo
All changes in the full scope of equivalents of the range that claim defines or the range that it is defined are understood to be included in right
In claim.All within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. made should all wrap
Containing within protection scope of the present invention.
Claims (10)
1. material at high temperature directional solidification experimental provision under a kind of Elevated Gravity, which is characterized in that have:
Centrifuge unit with the first experimental considerations unit and with the second experimental considerations unit of the first experimental considerations unit mirror image counterweight；
It is installed on the ampoule unit of first experimental considerations unit；
The temperature conditioning unit of control device temperature；With
The control unit that the temperature conditioning unit and the centrifuge unit are controlled；
The ampoule unit has: with the ampoule casing of hollow cavity, nesting be installed on the ampoule casing inside bottom and
Secondary heating component with hollow cavity, be installed on it is at the secondary heating component upper opening and fusible with hollow cavity
Substrate storehouse, the fusible substrate being placed in the hollow cavity in the fusible substrate storehouse, is nested into the ampoule casing and institute
It states the crucible pipe abutted inside fusible substrate storehouse and with the upper surface of fusible substrate and is set to the ampoule casing and institute
State the main heating component between crucible pipe；
It is flowed into after the fusible substrate melting in the hollow cavity of the secondary heating component of lower section.
2. experimental provision according to claim 1, which is characterized in that
The main heating component includes: main heating member, the main resistive heater being wound on the main heating member and main heating control
Warm galvanic couple；
The pair heating component includes: secondary heating member, the secondary resistive heater being wound on the secondary heating member and secondary heating control
Warm galvanic couple.
3. experimental provision according to claim 1, which is characterized in that
On the ampoule casing, it is formed on position corresponding with the main heating component and the secondary heating component respectively
Hole for drawing the hole of resistive heater electrode and for installing thermocouple.
4. experimental provision described in any one according to claim 1, which is characterized in that
The ampoule casing is formed by high purity aluminium oxide or toughened zirconium oxide material.
5. experimental provision according to claim 1, which is characterized in that
The fusible substrate orlop portion offers the fistulae hole being connected to the hollow cavity of the secondary heating component, and it is described can
Melting substrate storehouse is double fillet back cover structures.
6. experimental provision according to claim 1, which is characterized in that
The fusible substrate is high-intensitive pressure-resistant glass, and compression strength is 650 ~ 1900Mpa.
7. experimental provision according to claim 1, which is characterized in that
The main heating member and the secondary heating member are high purity aluminium oxide, the main resistive heater and the secondary resistive heater
For W-Re, tungsten, molybdenum or platinum-rhodium alloy.
8. experimental provision according to claim 1, which is characterized in that
The main heated for controlling temperature thermocouple and the secondary heated for controlling temperature thermocouple are platinum rhodium 40 or Wolfram rhenium heat electric couple.
9. experimental provision according to claim 1, which is characterized in that
The crucible pipe is high purity aluminium oxide, and lower end carries out thickening processing.
10. material at high temperature directional solidification experimental method under a kind of Elevated Gravity, which is characterized in that
Using experimental provision described in any one of claim 1 to 9, under scheduled super gravity field, the master is first passed through
Heating component heats the material in the crucible pipe, after reaching the set temperature, then passes through the secondary heating group
Part, which carries out heating to the fusible substrate in the fusible substrate storehouse, melts it controllably, described fusible after melting
Substrate is flowed under the influence of gravity in the cavity of downside, and the crucible pipe gradually moves down therewith, so that high-temperature region is left in part
The material realizes directional solidification.
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| CN110523958A (en) * | 2019-09-10 | 2019-12-03 | 浙江大学 | The crucible device for being suitble to hypergravity directional solidification to use |
| CN110842168A (en) * | 2019-09-10 | 2020-02-28 | 浙江大学 | Directional solidification casting system carried on hypergravity centrifugal machine |
| WO2021047148A1 (en) * | 2019-09-10 | 2021-03-18 | 浙江大学 | Supergravity directional solidification melting furnace equipment |
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| WO2021047148A1 (en) * | 2019-09-10 | 2021-03-18 | 浙江大学 | Supergravity directional solidification melting furnace equipment |
| CN110842168B (en) * | 2019-09-10 | 2023-10-27 | 浙江大学 | Directional solidification casting system carried on supergravity centrifugal machine |
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