CN107388823A - A kind of Multipurpose electric magnetic induction smelting apparatus and method - Google Patents
A kind of Multipurpose electric magnetic induction smelting apparatus and method Download PDFInfo
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- CN107388823A CN107388823A CN201710555181.8A CN201710555181A CN107388823A CN 107388823 A CN107388823 A CN 107388823A CN 201710555181 A CN201710555181 A CN 201710555181A CN 107388823 A CN107388823 A CN 107388823A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
- F27B14/061—Induction furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
- F27B2014/0818—Discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B2014/0837—Cooling arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of Multipurpose electric magnetic induction smelting apparatus and method, the device include oxidation zirconium crucible, graphite crucible, electromagnetic induction coil, upper header, conical hopper, ceramic mozzle, ceramic plug, supporting construction, power -line terminal and cooling line；Oxidation zirconium crucible is placed in inside graphite crucible, is the place of material melting, graphite crucible has magnetic conductivity and generated heat under eddy current effect；Electromagnetic induction coil is positioned over outside double crucible, and is sintered protection using magnesia, can be used in corrosive environment；The power -line terminal and cooling line of electromagnetic induction coil are all welded on ring flange, and the seamless connection with closed container can be achieved；Oxidation zirconium crucible is connected by bottom pyramidal funnel with ceramic mozzle, and is cooperated with ceramic plug and controlled opening and the closing of crucible bottom outlet；Whole device is connected by the supporting construction of its underpart with pedestal or container inner wall；The invention can use in the adverse circumstances such as corrosion, realize electromagnetic induction melting and the cast of material.
Description
Technical field
The present invention relates to melting technique field, and in particular to a kind of Multipurpose electric magnetic induction smelting apparatus and method.
Background technology
Melting is carried out to material in the industry generally use intermediate frequency such as melt-metallurgic or high-frequency electromagnetic induction principle of heating and poured
Note, alternating magnetic field is produced by applying alternating current to induction coil, permeability magnetic material is internal in the magnetic field of alternation to produce whirlpool
Flow, the random motion under eddy current effect of the atom in permeability magnetic material so as to produce heat, that is, converts electrical energy into heat energy.But
For the material of magnetic property difference, requirement when being heated using resistance-type to heat-insulation and heat-preservation and heating environment is high, costly,
The efficiency of heating surface is extremely low at high temperature；And when being heated originally to it using electromagnetic induction, because its own is nearly free from vortex, electricity
The magnetic induction efficiency of heating surface is extremely low, can not realize the melting of high-melting-point material, indirectly right as heating load using graphite crucible
When material is heated, because the stronger diffusion of graphite atom at high temperature causes material to be impregnated in graphite impurities；Although
Electromagnetic induction coil can be cooled down at work, but its temperature reached is enough to make it damage in oxidation or corrosive environment
It is bad, thus it requires being used under inertia or vacuum environment；In addition, conventional smelting furnace will fusing substantially by the way of rotary dumping
Material discharge, it is necessary to which handle manually or electrically carries out rotation process to systems such as whole crucible and coils, material is toppled over
Pattern and position can not ensure, and operating space is larger, and need extra means to seal the through part for rotating handle.
About melting technique and device, polytype smelting furnace is disclosed both at home and abroad.But every kind of smelting furnace makes
It with requiring to differ, can not ensure that it is used in oxidation or corrosive environment, or melting can not be carried out to the material of magnetic conductivity extreme difference, or
The control of the parameter such as fluid column diameter or discharge rate when person can not discharge to fused materials.
For example, Chinese patent application CN 201020592296, a kind of electromagnetic induction melting stove is disclosed, including stove outer covering,
Crucible and the heating component being made up of heat insulation layer and electromagnetic induction coil, although its efficiency of heating surface is high, is easy to safeguard,
Non-magnet material can not be heated, and electromagnetic induction coil is exposed, is easily oxidized in use, and can not
Meet the requirement that high temperature solution is precisely discharged on request in bottom.
For example, Chinese patent application CN 201320039078, discloses anhydrous cooling induction melting furnace, the sensing
Melting furnace arranges the furnace lining being made up of interior refractory material and outer refractory material between electromagnetic induction coil and crucible, with
And the heat insulation layer between them, by reducing heat radiation and heat transfer of the furnace lining to electromagnetic induction coil, it is ensured that electromagnetism sense
Coil is answered to work at a lower temperature, so as to eliminate the link cooled down to electromagnetic induction coil；But this smelting furnace
Equally it is not useable for the heating of non-magnet material, and electromagnetic induction coil is exposed, is easily oxidized in use, and
The requirement that high temperature solution is precisely discharged on request in bottom can not be met.
In another example Chinese patent application CN 201610144810, discloses a kind of blowing type induction melting furnace, it is used
Electromagnetic induction body can realize the melting of magnetic conduction substance and no permeable material, but because the device is not carried out to electromagnetic induction coil
Protection, can not use in oxygen atmosphere or corrosive atmosphere, further, since the device employs multilayer insulant, and set
There are injection system and mechanical agitation system, structure is extremely complex, and installation and maintenance are extremely inconvenient, and can not realize pouring for liquation
Note operation.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of Multipurpose electric magnetic induction smelting apparatus and side
Method, it can be used in oxidizing atmosphere and corrosive environment, magnetic conduction and non-magnet material are heated, and liquation can be realized
Poured into a mould in furnace bottom.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of Multipurpose electric magnetic induction smelting apparatus, the smelting apparatus are the principles based on electromagnetic induction heating, including
The oxidation zirconium crucible 1 in fusing place is heated as material positioned at whole smelting apparatus center, outside oxidation zirconium crucible 1
The graphite crucible 2 that inwall is brought into close contact with the oxidation outside wall surface of zirconium crucible 1, it is arranged on the electromagnetic induction coil of the periphery of graphite crucible 2
7, conical hopper 8 is attached or integrally sintered with ceramic mozzle 11, is placed in oxidation zirconium crucible 1 and graphite crucible 2
Bottom, the discharge to melting materialss plays a part of water conservancy diversion；The electromagnetic induction coil 7, conical hopper 8 and ceramic mozzle
11 entirety are sintered using magnesia, form magnesia knotting body 6, it is ensured that electromagnetic induction coil 7 can be in oxygen or corrosive environment
Lower use；It is connected in the ceramic insertion of lifting arm 3 oxidation zirconium crucible 1 with ceramic plug 12, and the conical hopper 8 being connected with crucible bottom
Compounding practice, realize the opening and closing of bottom outlet；The power -line terminal 13 and cooling pipeline 14 being connected with electromagnetic induction coil 7 are inlayed
On flange 15.
The oxidation zirconium crucible 1 is back taper.
On the conical hopper 8 installation oxidation zirconium crucible 1 when bonded using adhesive, installation graphite crucible 2 when without
Adhesive need to be used.
The top of magnesia knotting body 6 installs top cover 5 additional to reduce radiating, and ceramic lifting arm 3 is inserted through the center hole of top cover 5
Enter to aoxidize in zirconium crucible 1.
Top cover handle 4 is provided with the top cover 5.
The smelting apparatus is arranged on the top of supporting construction 9, the center perforate of supporting construction 9, is easy to ceramic water conservancy diversion
Pipe 11 runs through installation；Multiple fixed orifice plates 10 are disposed with the circumference of supporting construction 9, pass through bolt with pedestal or container inner wall
Fixation is attached, the height of supporting construction 9 is adjusted according to installation requirement.
The ceramic lifting arm 3, ceramic plug 12, conical hopper 8 and ceramic mozzle 11 select magnesia ceramics material.
The method of smelting of the Multipurpose electric magnetic induction smelting apparatus, when heating fusing is carried out to material, confirm that ceramics carry
Crucible bottom outlet is completed to block by rising stem 3 and ceramic plug 12, opens the input that top cover 5 carries out material, closes top cover 5；Start
The cooling circuit of electromagnetic induction coil 7, and electromagnetic induction coil 7 is powered, electric energy is converted into heat energy on graphite crucible 2, and
By aoxidizing zirconium crucible 1 by heat transfer in aoxidizing material to be melted in zirconium crucible 1, magnetic conduction of this mode of heating to material
Property do not require, and carbon impurity will not be introduced to the material of fusing；It is real when after material melting and when reaching required temperature
The purpose of existing melting, or by the way that ceramic lifting arm 3 and ceramic plug 12 are lifted after, the material of fusing passes through ceramics from crucible bottom outlet
The operation such as cast is completed in the discharge of mozzle 11；Inverted taper oxidation zirconium crucible 1 and the structure of conical hopper 8 of its bottom, can
Residual quantity of the melting materialss in oxidation zirconium crucible is minimized, avoids the fusing to different material from introducing impurity.
The cooling circuit is cooled down using cooling oil to electromagnetic induction coil 7.
Compared to the prior art compared with the present invention possesses following advantage：
1st, smelting apparatus of the invention, loaded by regarding graphite crucible as Electromagnetic Heating, material heated indirectly,
Heating fusing can be carried out to magnetic conduction and no permeable material by the way of electromagnetic induction heating；Due in graphite crucible and heating
Oxidation zirconium crucible is mounted between material, can prevent under high temperature carbon is diffused in melting materialss to produce carbon pollution to it.
2nd, smelting apparatus of the invention, is sintered to electromagnetic induction coil by using magnesia, can prevent electromagnetic induction
Coil is oxidized or corroded under oxygen atmosphere or corrosive environment, overcomes working environment to electromagnetic induction melting device.
3rd, smelting apparatus of the invention, conical hopper and ceramic mozzle are connected in crucible bottom, and with ceramic plug and pottery
Porcelain lifting arm, which cooperates, to be operated, and realizes the open and close of bottom outlet, so as to realize that the material after fusing is discharged in bottom,
Improve cast precision.
4th, smelting apparatus of the invention, is cooled down by using cooling oil to electromagnetic induction coil, can be in water-less environment
Using being exploded when preventing water from being contacted with high temperature melting material.
5th, smelting apparatus of the invention, by by power -line terminal and cooling tube line mosaic on ring flange, by melting
Device, which is placed in, can reach high obturation effect when in sealing container.
Brief description of the drawings
Fig. 1 is the overall structure diagram of a kind of Multipurpose electric magnetic induction method of smelting of the present invention and device；
As shown in figure 1,1 is oxidation zirconium crucible, 2 be graphite crucible, and 3 be ceramic lifting arm, and 4 be top cover handle, and 5 be top
Lid, 6 be magnesia knotting body, and 7 be electromagnetic induction coil, and 8 be conical hopper, and 9 be supporting construction, and 10 be fixed orifice plate, and 11 be pottery
Porcelain mozzle, 12 be ceramic plug, and 13 be power -line terminal, and 14 be cooling pipeline, and 15 be flange.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description：
As shown in figure 1, a kind of Multipurpose electric magnetic induction smelting apparatus of the present invention, described device is to be based on electromagnetic induction heating
Principle, including oxidation zirconium crucible 1, graphite crucible 2, ceramic lifting arm 3, top cover handle 4, top cover 5, magnesia knotting body 6, electromagnetism
Induction coil 7, conical hopper 8, supporting construction 9, ceramic mozzle 11, ceramic plug 12 and the power supply that is embedded on flange 15 connect
Terminal 13 and cooling pipeline 14.
Described oxidation zirconium crucible 1 is back taper, is the place of material heating fusing, positioned at the center of whole smelting apparatus
Position, its size are determined according to maximum melting amount；Graphite crucible 2 is the load of electromagnetic induction heating, and its size is according to oxygen
The geometry for changing zirconium crucible 1 carries out turnning and milling, is finally brought into close contact installation with the oxidation outer wall of zirconium crucible 1；Conical hopper 8 and ceramics
Mozzle 11 is attached or integrally sintered, the bottom of oxidation zirconium crucible 1 and graphite crucible 2 is placed in, to melting materialss
Discharge play a part of water conservancy diversion；Electromagnetic induction coil 7 is enclosed on the outside of graphite crucible 2, and by electromagnetic induction coil 7, taper
Funnel 8 and the entirety of ceramic mozzle 11 are sintered using magnesia, and the fineness that wherein magnesia is chosen can be according to specifically used
Environment determines, it is ensured that magnet coil can use under oxygen or corrosive environment, and in installation oxidation zirconium crucible on conical hopper 8
Bonded using adhesive, the installation of graphite crucible 2 is without using adhesive；When carrying out electromagnetic induction heating, in order to subtract
Few radiating, improves firing rate and efficiency, and top cover 5 is installed on the top of magnesia knotting body 6, and circular hole is reserved in the center of top cover 5,
For running through for ceramic lifting arm 3；The ceramic bottom of lifting arm 3 is connected with ceramic plug 12, by operating ceramic lifting arm 3 to ceramics
Plug 12 is lifted and step-down operation, so as to realize that the material of fusing is discharged from crucible bottom outlet by ceramic mozzle 11.
The smelting apparatus all installed in the top of supporting construction 9, the center perforate of supporting construction 9, is easy to ceramics
Mozzle 11 runs through installation；Multiple fixed orifice plates 10 are disposed with the circumference of supporting construction 9, are passed through with pedestal or container inner wall
Bolt is attached fixation, and the height of supporting construction 9 can be adjusted according to installation requirement.
The device needs that electromagnetic induction coil 7 is powered and cooled down, wherein power -line terminal 13 and cooling pipeline 14
It is embedded on flange 15, when the device is applied to closed environment, high-seal effect is connected up to by flange.
When carrying out heating fusing after all part installations to material, ceramic lifting arm 3 and ceramic plug 12 have been confirmed
Crucible bottom outlet is completed to block, opens the input that top cover 5 carries out material, closes top cover 5；Start the cooling of electromagnetic induction coil 7
Loop, and electromagnetic induction coil 7 is powered, electric energy is converted into heat energy on graphite crucible 2, and by aoxidizing zirconium crucible 1 by heat
Amount is transmitted to material to be melted in oxidation zirconium crucible 1, and this mode of heating is not required the magnetic conductivity of material, and will not
Carbon impurity is introduced to the material of fusing；When after material melting and when reaching required temperature, realizing the purpose of melting, or pass through
After ceramic lifting arm 3 and ceramic plug 12 are lifted, the material of fusing is discharged completion by ceramic mozzle 11 from crucible bottom outlet and poured
The operation such as note；Inverted taper oxidation zirconium crucible 1 structure special with the conical hopper 8 of its bottom, can be by melting materialss in oxygen
The residual quantity changed in zirconium crucible minimizes, and avoids the fusing to different material from introducing impurity.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The embodiment of the present invention is only limitted to this, for the ordinary technical staff in the technical field of the invention, as long as
Within the spirit of the present invention, change and modification to embodiment described above should all be considered as the power in the present invention
In the range of sharp claim.
Claims (9)
- A kind of 1. Multipurpose electric magnetic induction smelting apparatus, it is characterised in that：The smelting apparatus is based on electromagnetic induction heating Principle, including the oxidation zirconium crucible (1) for melting place is heated as material positioned at whole smelting apparatus center, positioned at oxidation The graphite crucible (2) that zirconium crucible (1) outer internal wall is brought into close contact with oxidation zirconium crucible (1) outside wall surface, is arranged on graphite crucible (2) The electromagnetic induction coil (7) of periphery, conical hopper (8) is attached with ceramic mozzle (11) or integrally sintered, placement In the bottom of oxidation zirconium crucible (1) and graphite crucible (2), water conservancy diversion is played a part of in the discharge to melting materialss；The electromagnetism sense Answer coil (7), conical hopper (8) and ceramic mozzle (11) to be integrally sintered using magnesia, form magnesia knotting body (6), Ensure that electromagnetic induction coil (7) can use under oxygen or corrosive environment；Ceramic lifting arm (3) insertion oxidation zirconium crucible (1) Conical hopper (8) compounding practice that is interior to be connected with ceramic plug (12), and being connected with crucible bottom, realize opening and the pass of bottom outlet Close；The power -line terminal (13) and cooling pipeline (14) being connected with electromagnetic induction coil (7) are embedded on flange (15).
- A kind of 2. Multipurpose electric magnetic induction smelting apparatus according to claim 1, it is characterised in that：The oxidation zirconium crucible (1) it is back taper.
- A kind of 3. Multipurpose electric magnetic induction smelting apparatus according to claim 1, it is characterised in that：The conical hopper (8) bonded on during installation oxidation zirconium crucible (1) using adhesive, without using adhesive when installing graphite crucible (2).
- A kind of 4. Multipurpose electric magnetic induction smelting apparatus according to claim 1, it is characterised in that：The magnesia knotting body (6) top installs top cover (5) additional to reduce radiating, and ceramic lifting arm (3) inserts oxidation zirconium crucible through top cover (5) center hole (1) in.
- A kind of 5. Multipurpose electric magnetic induction smelting apparatus according to claim 4, it is characterised in that：On the top cover (5) It is provided with top cover handle (4).
- A kind of 6. Multipurpose electric magnetic induction smelting apparatus according to claim 1, it is characterised in that：The smelting apparatus peace Mounted in the top of supporting construction (9), supporting construction (9) center perforate, be easy to ceramic mozzle (11) runs through installation；Branch Multiple fixed orifice plates (10) are disposed with the circumference of support structure (9), fixation is attached by bolt with pedestal or container inner wall, The height of supporting construction (9) is adjusted according to installation requirement.
- A kind of 7. Multipurpose electric magnetic induction smelting apparatus according to claim 1, it is characterised in that：The ceramic lifting arm (3), ceramic plug (12), conical hopper (8) and ceramic mozzle (11) select magnesia ceramics material.
- 8. the method for smelting of any one of claim 1 to the 7 Multipurpose electric magnetic induction smelting apparatus, it is characterised in that：To thing When material carries out heating fusing, confirm that crucible bottom outlet is completed to block by ceramic lifting arm (3) and ceramic plug (12), open top cover (5) input of material is carried out, closes top cover (5)；Start the cooling circuit of electromagnetic induction coil (7), and to electromagnetic induction coil (7) it is powered, electric energy is converted into heat energy on graphite crucible (2), and by aoxidizing zirconium crucible (1) by heat transfer in zirconium oxide earthenware Material to be melted in crucible (1), this mode of heating are not required the magnetic conductivity of material, and the material of fusing will not be drawn Enter carbon impurity；When after material melting and when reaching required temperature, realizing the purpose of melting, or by by ceramic lifting arm (3) and after ceramic plug (12) lifts, the material of fusing passes through ceramic mozzle (11) discharge from crucible bottom outlet and completes the behaviour such as cast Make；Inverted taper oxidation zirconium crucible (1) and conical hopper (8) structure of its bottom, can be by melting materialss in zirconium oxide earthenware Residual quantity in crucible minimizes, and avoids the fusing to different material from introducing impurity.
- 9. method of smelting according to claim 8, it is characterised in that：The cooling circuit is using cooling oil to electromagnetic induction Coil (7) is cooled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555181.8A CN107388823A (en) | 2017-07-07 | 2017-07-07 | A kind of Multipurpose electric magnetic induction smelting apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710555181.8A CN107388823A (en) | 2017-07-07 | 2017-07-07 | A kind of Multipurpose electric magnetic induction smelting apparatus and method |
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Cited By (13)
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| CN108188363A (en) * | 2018-04-04 | 2018-06-22 | 乐山师范学院 | Amorphous magnesium alloy melt-spun integrally uses crucible |
| CN109152119A (en) * | 2018-07-03 | 2019-01-04 | 长兴利能自动化科技有限公司 | Electromagnetic induction heater |
| CN109161717A (en) * | 2018-10-17 | 2019-01-08 | 湘潭金波新材料科技有限公司 | It is used to prepare the smelting apparatus of aluminum matrix composite |
| CN109780861A (en) * | 2019-01-14 | 2019-05-21 | 石嘴山市宝泰合金有限公司 | A kind of intermediate frequency furnace devices and methods therefor recycling tantalum pentoxide |
| CN109946199A (en) * | 2019-03-18 | 2019-06-28 | 河钢股份有限公司承德分公司 | A kind of device and method detecting ferrous material water rate |
| CN110274932A (en) * | 2019-05-15 | 2019-09-24 | 合肥工业大学 | A kind of device applied to mesoscale molten iron fluid column and water contact explositions experiment |
| CN111536796A (en) * | 2020-06-15 | 2020-08-14 | 贵州省鑫泰增材制造有限公司 | Smelting equipment for zinc alloy and production process thereof |
| CN112010534A (en) * | 2020-09-09 | 2020-12-01 | 中国振华集团云科电子有限公司 | Batch-production high-temperature glass powder smelting device and smelting method thereof |
| CN113432421A (en) * | 2021-06-21 | 2021-09-24 | 中国原子能科学研究院 | Cold crucible |
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| US11655557B2 (en) | 2020-06-05 | 2023-05-23 | Meishan Boya Advanced Materials Co., Ltd. | Methods and devices for growing crystals with high uniformity without annealing |
| CN116499246A (en) * | 2023-04-17 | 2023-07-28 | 哈尔滨工业大学 | Blending device for overheat and interface reaction of electromagnetic cold crucible smelting melt |
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