CN115383064A - Continuous liquid-changing hot type continuous casting metal purification method combined with traveling wave magnetic field electromagnetic stirring - Google Patents
Continuous liquid-changing hot type continuous casting metal purification method combined with traveling wave magnetic field electromagnetic stirring Download PDFInfo
- Publication number
- CN115383064A CN115383064A CN202211045181.0A CN202211045181A CN115383064A CN 115383064 A CN115383064 A CN 115383064A CN 202211045181 A CN202211045181 A CN 202211045181A CN 115383064 A CN115383064 A CN 115383064A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- crucible
- traveling wave
- melt
- wave magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000746 purification Methods 0.000 title claims abstract description 25
- 238000009749 continuous casting Methods 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003756 stirring Methods 0.000 title abstract description 10
- 239000000155 melt Substances 0.000 claims abstract description 31
- 238000005266 casting Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 abstract description 12
- 230000008023 solidification Effects 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 11
- 239000012071 phase Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- -1 and among them Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/143—Plants for continuous casting for horizontal casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention provides a method for purifying continuous liquid-changing hot continuous casting metal by combining with traveling wave magnetic field electromagnetic stirring, which mainly introduces a traveling wave magnetic field generating electromagnetic force in a constant direction into a horizontal hot continuous casting process, improves the flow of a melt by directional electromagnetic force, and effectively and quickly conveys impurities at the front of solidification to a far end, thereby obviously improving the purification effect of horizontal hot continuous casting.
Description
Technical Field
The invention relates to the field of metal purification, in particular to a device and a method for purifying continuous liquid-changing hot continuous casting metal by combining with traveling wave magnetic field electromagnetic stirring.
Background
There are various methods for purifying metals, and among them, metals of high purity are generally obtained by a segregation method, in which impurities are gathered to one side of an ingot by utilizing the characteristic that a solute is enriched in a liquid phase (k < 1) or a solid phase (k > 1) when an alloy is solidified, and then an impurity-enriched portion is cut off. Segregation methods are generally carried out by directional solidification or continuous casting. The former is mainly carried out in a directional solidification furnace, and the purification efficiency is improved by controlling the cooling effect and the crystallization temperature of a cooling medium; the latter can be purified continuously, and the product is usually rod or wire, but the purity after purification is lower than that of the former. In the directional solidification, in order to effectively remove impurities, a flow field of the melt is generally controlled by an electromagnetic stirring mode, so that the distribution of impurity elements in the melt is improved, and the purity is improved.
Chinese patent publication No. CN101748291A proposes a purification apparatus for high purity aluminum, i.e. an internal heating device and a plurality of electromagnetic stirrers are added to a directional solidification device, so that the melt is more uniformly mixed by electromagnetic stirring, and the impurity concentration at the front edge of the liquid-solid interface is reduced, thereby achieving the purpose of improving the purification efficiency of aluminum. However, the electromagnetic stirring in the present method is primarily directed to increasing the turbulence of the melt flow so that the solute in the melt is substantially homogenized rather than being directionally transported to the far end. However, directional solidification purification is not a continuous purification, and the yield efficiency is relatively low; electromagnetic stirring is applied to directional solidification purification, but the direction of electromagnetic force changes along with time, the flow of melt is disordered, and the purification effect is unstable.
The horizontal hot continuous casting purification is mainly realized through the solidification characteristic of the alloy, excessive human intervention is not caused, the flow of the melt is less improved by applying an electromagnetic stirring method, compared with the method before purification, the purity after purification is not very high, and the purification efficiency is lower.
Disclosure of Invention
The invention aims to provide a method for purifying continuous liquid-changing hot continuous casting metal by combining with traveling wave magnetic field electromagnetic stirring, which mainly introduces a traveling wave magnetic field which can generate electromagnetic force in a constant direction into a horizontal hot continuous casting process, improves the flow of a melt by directional electromagnetic force, and effectively and quickly conveys impurities at the front of solidification to a far end, thereby obviously improving the purification effect of horizontal hot continuous casting.
In one aspect, the present invention provides a hot type continuous casting metal purification apparatus comprising upper and lower crucibles connected by a passage, a check valve provided in the upper crucible above the passage for controlling a melt flow rate; a casting mold is arranged at the horizontal outlet section of the lower crucible, and a traveling wave magnetic field generator is arranged at the outer side of the casting mold and used for controlling the melt flow of the horizontal section of the device; and a blank drawing device and a cooling device are further arranged in the advancing direction of the casting blank. And a thermocouple is arranged at the outlet of the casting blank and is used for monitoring the temperature of the melt near the outlet.
Further, the traveling wave magnetic field generator consists of 5 groups of coils which are electrified with alternating current, the current of each group of coils is equal in magnitude, and the current frequency is 50Hz.
Further, in the traveling-wave magnetic field generator, the phases of currents of adjacent coils are different by pi/2.
Further, an induction coil is arranged in the crucible wall.
Further, a resistance heater is arranged between the casting mould and the travelling wave magnetic field generator.
Further, the outside of the resistance heater is also provided with a heat insulation material.
In another aspect, the present invention provides a method for purifying hot type continuous casting metal, the method comprising
S1: introducing the melt into a crucible, and controlling the flow of the melt through a check valve;
s2: the melt enters the action range of a traveling wave magnetic field through a horizontal outlet section of the crucible, and forms stable annular flow in the melt under the action of electromagnetic force;
s3: and forming a casting blank at the outlet of the casting mould by the melt, cooling by a cooling device, and pulling out by a blank drawing device to obtain a metal blank.
Further, the crucible heating temperature is 30K to 100K above the liquidus temperature, preferably 30K to 50K above the liquidus temperature.
Further, the resistance heating temperature is 10K to 50K above the liquidus temperature, preferably 15K to 30K above the liquidus temperature.
Further, the drawing speed is 5um/s to 500um/s, preferably 50um/s to 100um/s.
The invention has the technical effects that:
1. the invention more accurately controls the melt flow of the horizontal section of the continuous casting device, forms stable circulation, and continuously conveys the enriched impurities at the solidification front to the furnace body, thereby effectively improving the metal purity.
2. The invention adopts hot continuous casting, heats the casting mould, enlarges the liquid phase area at the solidification front, and leads the melt to flow more fully.
3. Combines the characteristics of horizontal continuous casting purification and traveling wave magnetic field constant direction electromagnetic force, and has the characteristics of high speed and high purity.
Drawings
FIG. 1 is a schematic view of a purification apparatus of the present invention;
FIG. 2 is a schematic diagram of the coil composition distribution of the present invention;
FIG. 3 is a schematic diagram of the electromagnetic force distribution and melt flow of the continuous casting horizontal segment (a); (b) melt flow schematic.
Reference numerals:
1-a check valve; 2-melting the mixture; 3-a crucible; 4-an induction coil; 5-traveling wave magnetic field generator; 6-casting mould; 7-casting blank; 8-a cooling device; 9-a resistance heater; 10-heat insulating material; 11-a thermocouple; 12-a drawing device, 13-a coil winding 1 (phase: 0); 14-coil winding 2 (phase: pi/2); 15-coil winding 3 (phase: pi); 16-coil winding 4 (phase: 3 π/2); 17-coil winding 5 (phase: 2 π).
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for clarity and understanding of technical contents. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
Example 1
Here, for example, the purification of aluminum metal, the impurities contained therein are mainly silicon, and the concentration of silicon is about 0.5wt.%. As shown in FIG. 1, a hot type continuous casting metal purifying apparatus comprises an upper crucible 3 and a lower crucible 3 connected through a passage, an induction coil 4 is provided in the wall of the crucible 3, and a check valve 1 is provided above the passage in the upper crucible 3 for controlling the flow rate of a melt; a casting mold 6 is arranged at the horizontal outlet section of the lower crucible, and a traveling wave magnetic field generator 5 is arranged outside the casting mold 6 and used for controlling the melt flow of the horizontal section of the device; a blank drawing device 12 and a cooling device 8 are further arranged in the advancing direction of the casting blank, and a resistance heater 9 is arranged between the casting mold 6 and the traveling wave magnetic field generator 5; the external part of the resistance heater 9 is also provided with a heat insulation material 10; a thermocouple 11 is arranged below the outlet of the casting mould 6.
As shown in FIG. 2, the traveling-wave magnetic field generator is composed of five groups of coils which are electrified with alternating current, the current of each group of coils is equal in magnitude, the current frequency is 50Hz, and the phase difference between adjacent coils is pi/2. The traveling wave magnetic field generator configured based on fig. 2 can generate electromagnetic force distribution similar to that shown in fig. 3 (a) in the continuous casting horizontal section part, namely, the electromagnetic force applied to the melt near-wall area is larger and gradually reduced along the central axis direction, and the electromagnetic force applied to the melt central area is smaller. While the melt is subjected to gravity. Under the combined action of electromagnetic force and gravity, the melt generates stable annular flow similar to that shown in figure 3 (b), so that the enriched impurities at the solidification front are effectively removed, and the metal purity is improved.
The parameters of the traveling wave magnetic field generator in this embodiment are shown in the table:
| coil winding | Winding 1 | Winding 2 | Winding 3 | Winding 4 | Winding 5 |
| Current Density (A/m) 2 ) | 5E+06 | 5E+06 | 5E+06 | 5E+06 | 5E+06 |
| Phase position | 0 | π/2 | π | 3π/2 | 2π |
The metal purification process comprises the following steps:
s1: introducing the melt 2 into a crucible 3, controlling the flow through a flow stopping valve, and heating the crucible at 965K;
s2: the melt 2 enters a traveling wave magnetic field as shown in figure 3 (a) through a horizontal outlet section of the crucible 3, the resistance heating temperature is 945K, and stable annular flow as shown in figure 3 (b) is formed;
s3: and forming a casting blank 7 from the flowing melt 6, cooling by a cooling device 8, and drawing by a drawing device 12 at a drawing speed of 50um/s to obtain a metal blank.
The silicon concentration of the fed pure aluminum is 0.5wt.%, and the silicon concentration of the cast slab 7 obtained without applying the traveling wave magnetic field is 0.34wt.%; and the concentration of silicon after purification is 0.21wt.% by adopting a purification device additionally provided with a traveling wave magnetic field generator.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A hot type continuous casting metal purification device comprises an upper crucible and a lower crucible which are connected through a channel, wherein a stop valve is arranged above the channel in the upper crucible; a casting mold is arranged at the horizontal outlet section of the lower crucible, and a traveling wave magnetic field generator is arranged at the outer side of the casting mold; and a blank drawing device and a cooling device are further arranged in the advancing direction of the casting blank.
2. The device of claim 1, wherein the traveling wave magnetic field generator is comprised of 5 sets of coils energized with alternating current, each set of coils having equal current magnitude and current frequency of 50Hz, and adjacent coils being out of phase by pi/2.
3. The apparatus of claim 1, wherein an induction heating coil is disposed within the crucible wall.
4. The apparatus of claim 1, wherein a resistive heater is disposed between the mold and the traveling wave magnetic field generator.
5. The apparatus of claim 1, wherein the resistive heater is further externally provided with a thermal insulation material.
6. A method for purifying hot continuous casting metal, which comprises
S1: introducing the melt into a crucible, and controlling the flow of the melt in the crucible through a check valve;
s2: the melt enters a traveling wave magnetic field through a horizontal outlet section of the crucible, and stable annular flow is formed inside the melt;
s3: and forming a casting blank at the outlet of the casting mould by the melt, cooling by a cooling device, and pulling out by a blank drawing device to obtain a metal blank.
7. The method according to claim 6, wherein the crucible heating temperature is 30K-100K above the liquidus temperature, preferably 30K-50K above the liquidus temperature.
8. The method according to claim 6, wherein the resistance heating temperature is 10K-50K above the liquidus temperature, preferably 15K-30K above the liquidus temperature.
9. The method of claim 6, wherein the withdrawal speed is between 5um/s and 500um/s.
10. The method of claim 6, wherein the withdrawal speed is from 50um/s to 100um/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211045181.0A CN115383064A (en) | 2022-08-30 | 2022-08-30 | Continuous liquid-changing hot type continuous casting metal purification method combined with traveling wave magnetic field electromagnetic stirring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211045181.0A CN115383064A (en) | 2022-08-30 | 2022-08-30 | Continuous liquid-changing hot type continuous casting metal purification method combined with traveling wave magnetic field electromagnetic stirring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115383064A true CN115383064A (en) | 2022-11-25 |
Family
ID=84121892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211045181.0A Pending CN115383064A (en) | 2022-08-30 | 2022-08-30 | Continuous liquid-changing hot type continuous casting metal purification method combined with traveling wave magnetic field electromagnetic stirring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115383064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115216847A (en) * | 2022-07-21 | 2022-10-21 | 西北工业大学 | Method and device for preparing metal material by multi-magnetic field assisted directional solidification |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3443473A1 (en) * | 1984-11-29 | 1986-05-28 | Theodor Prof. Dr.-Ing. 8022 Grünwald Rummel | Method and apparatus for the continuous casting of steel and other high-melting metals by means of a mould which does not vibrate vertically |
| CN1360067A (en) * | 2001-11-29 | 2002-07-24 | 上海交通大学 | Process for purifying raw aluminium by changing liquid, directional solidification and conticasting |
| DE102006042579A1 (en) * | 2005-09-11 | 2007-04-19 | Zhejiang Fada Copper Co. Ltd. | Horizontal electromagnetism method and equipment for casting sheet and strip made from copper alloy continuously |
| CN101214533A (en) * | 2008-01-09 | 2008-07-09 | 高新张铜股份有限公司 | Electromagnetism horizontally continuously casting device for hollow copper and copper alloy tube thereof |
| CN102554165A (en) * | 2012-01-10 | 2012-07-11 | 辽宁科技大学 | Electromagnetic device for stirring metal melt spirally |
| CN103447490A (en) * | 2013-09-04 | 2013-12-18 | 青岛理工大学 | Method and device for removing non-metallic inclusions in continuous casting process of hollow pipe blank |
| CN105057622A (en) * | 2015-08-21 | 2015-11-18 | 中南大学 | Method and device for restraining macrosegregation of cast aluminum alloy cast ingots in direct chill (DC) casting |
| CN108465792A (en) * | 2018-03-29 | 2018-08-31 | 东北大学 | A kind of difference phase impulse magnetic field electromagnetic continuous casting process |
| CN111266543A (en) * | 2020-03-13 | 2020-06-12 | 南京钢铁股份有限公司 | Electromagnetic stirring method for high-carbon steel secondary cooling area |
| CN112808954A (en) * | 2021-02-07 | 2021-05-18 | 湖南中科电气股份有限公司 | Continuous casting crystallizer device and flow field control method thereof |
-
2022
- 2022-08-30 CN CN202211045181.0A patent/CN115383064A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3443473A1 (en) * | 1984-11-29 | 1986-05-28 | Theodor Prof. Dr.-Ing. 8022 Grünwald Rummel | Method and apparatus for the continuous casting of steel and other high-melting metals by means of a mould which does not vibrate vertically |
| CN1360067A (en) * | 2001-11-29 | 2002-07-24 | 上海交通大学 | Process for purifying raw aluminium by changing liquid, directional solidification and conticasting |
| DE102006042579A1 (en) * | 2005-09-11 | 2007-04-19 | Zhejiang Fada Copper Co. Ltd. | Horizontal electromagnetism method and equipment for casting sheet and strip made from copper alloy continuously |
| CN101214533A (en) * | 2008-01-09 | 2008-07-09 | 高新张铜股份有限公司 | Electromagnetism horizontally continuously casting device for hollow copper and copper alloy tube thereof |
| CN102554165A (en) * | 2012-01-10 | 2012-07-11 | 辽宁科技大学 | Electromagnetic device for stirring metal melt spirally |
| CN103447490A (en) * | 2013-09-04 | 2013-12-18 | 青岛理工大学 | Method and device for removing non-metallic inclusions in continuous casting process of hollow pipe blank |
| CN105057622A (en) * | 2015-08-21 | 2015-11-18 | 中南大学 | Method and device for restraining macrosegregation of cast aluminum alloy cast ingots in direct chill (DC) casting |
| CN108465792A (en) * | 2018-03-29 | 2018-08-31 | 东北大学 | A kind of difference phase impulse magnetic field electromagnetic continuous casting process |
| CN111266543A (en) * | 2020-03-13 | 2020-06-12 | 南京钢铁股份有限公司 | Electromagnetic stirring method for high-carbon steel secondary cooling area |
| CN112808954A (en) * | 2021-02-07 | 2021-05-18 | 湖南中科电气股份有限公司 | Continuous casting crystallizer device and flow field control method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 丛书编委会编著: "《锻压设备故障分析与排除方法》", vol. 1, 31 January 1998, 航空工业出版社, pages: 25 * |
| 徐晓伟: ""热型连铸偏析法提纯废旧金属的数值模拟"", 中国优秀硕士学位论文全文数据库工程科技Ⅰ辑, no. 2020, pages 027 - 795 * |
| 朱庆丰: ""铝合金差相电磁水平连续铸造工艺及理论研究"", 中国博士学位全文数据库工程科技Ⅰ辑, no. 06, pages 022 - 39 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115216847A (en) * | 2022-07-21 | 2022-10-21 | 西北工业大学 | Method and device for preparing metal material by multi-magnetic field assisted directional solidification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106807907B (en) | Low radial temperature gradient cold crucible vacuum induction melting directional solidification device | |
| US4915723A (en) | Apparatus for casting silicon with gradual cooling | |
| CN105132705B (en) | The method and device of vacuum magnetic control electric arc remelting refining metal | |
| US4621676A (en) | Casting of metallic materials | |
| CN103056344B (en) | Method for controlling electroslag melting casting by added transient magnetic field and electroslag smelting casting device | |
| US20100163207A1 (en) | Method and device for the electromagnetic stirring of electrically conductive fluids | |
| JPS63192543A (en) | Melting and continuous casting device for metal, operating method of said device and usage of said device | |
| CN115383064A (en) | Continuous liquid-changing hot type continuous casting metal purification method combined with traveling wave magnetic field electromagnetic stirring | |
| CN108273972A (en) | A kind of device and method of electromagnetic energy crystal grain refinement | |
| KR100718408B1 (en) | Clean metal nucleated cast article | |
| US8562325B2 (en) | Remote cool down of a purified directionally solidified material from an open bottom cold crucible induction furnace | |
| CN114101613A (en) | Method and device for preparing homogeneous immiscible alloy continuous casting billet through high-intensity magnetic field composite melt overheating treatment | |
| JPS6116215B2 (en) | ||
| CN108788040B (en) | A kind of device of hydrogen plasma melting continuously casting production high pure metal target blankss | |
| JPH01264920A (en) | Silicon casting device | |
| CN208680474U (en) | A kind of device of electromagnetic energy crystal grain refinement | |
| JPH05280871A (en) | Water-cooled divided copper crucible for induction melting service | |
| JPH0230698A (en) | Casting device of silicon | |
| US4972899A (en) | Method and apparatus for casting grain refined ingots | |
| CN104071790A (en) | Device and method for purifying silicon from silicon alloy melt by electromagnetic stirring | |
| Hao et al. | Improvement of casting speed and billet quality of direct chill cast aluminum wrought alloy with combination of slit mold and electromagnetic coil | |
| JP2001241858A (en) | Guide tube structure for electromagnetic flux concentration | |
| JP2001316734A (en) | Method for controlling concentration of flow flux in guiding tube | |
| JP2926961B2 (en) | Equipment for continuous melting and casting of metals | |
| JPH0711352A (en) | Method for continuously melting and casting high melting point active metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |