CN1363700A - Equipment for removing non-metal impurities from molten aluminium - Google Patents
Equipment for removing non-metal impurities from molten aluminium Download PDFInfo
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- CN1363700A CN1363700A CN01142620A CN01142620A CN1363700A CN 1363700 A CN1363700 A CN 1363700A CN 01142620 A CN01142620 A CN 01142620A CN 01142620 A CN01142620 A CN 01142620A CN 1363700 A CN1363700 A CN 1363700A
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- separator
- melt
- gating system
- ruhmkorff coil
- transformer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
An equipment for removing impurities from molten aluminium is composed of electromagnetic generator, pouring system, and separator arranged in the inductino coil of electromagnetic generator and connected to said pouring system. Said electromagnetic generator consists of induction coil, transformer and high-frequency power supply. It features high impurity removing rate (90% or more) within 5S.
Description
Technical field: what the present invention relates to is a kind of device of aluminium melt purifying, and particularly a kind of device of removing nonmetallic inclusions from aluminum melts belongs to the Metal smelting professional domain.
Background technology: non-metallic inclusion has very big hazardness in the aluminium alloy, as destroy the continuity of matrix, for the germinating of fatigue cracking provides core, the mechanical property of infringement foundry goods reduces the flowability of melt, promote loose formation, form the hard point, worsen processing characteristics etc.Along with the application of aluminium alloy in fields such as automobile, electronics, packing and aerospace enlarges day by day, in aluminum products and starting material manufacturer, remove and be mingled with, improve melt cleanliness factor level more than the 10 μ m and become necessary link and the key content that improves the aluminum alloy materials metallurgical quality.At present traditional cleaning molten method comprises mainly that melt leaves standstill, gas refinement, flux cover and filtration method.Be mingled with shortcomings such as removing efficient is not high, stability deficiency, contaminate environment but exist, all having much room for improvement aspect decontamination effect improving and the reliability.As gravity settling only to being mingled with effectively greater than 90-100 μ m; The bubble flotation is only to comparatively reliable greater than the removal that is mingled with of 30-40 μ m; Filtering technique is difficult to remove small particle size and is mingled with (less than 10 μ m), and filter effect changes greatly, strainer stops up easily.In recent years, electromagnetic separation technology has obtained extensive studies, its essence is and utilize the effect that adds electromagnetic force field to improve the segregation rate that is mingled with greatly, and combine the ability that the strainer seizure is mingled with, thereby can effectively, stably remove micron-sized fine foreign matter in the melt.Find by retrieval: the filial piety of mountain tail literary composition, the assistant assistant is strong to be situated between, rock well one man of virtue and ability etc., fixedly AC magnetism field boundary The utilizes that nonmetal Jie removes at thing in the molten metal, iron と Steel, 1997, vol.83 (1): 30-35.Propositions such as mountain tail literary composition filial piety utilize solenoid coil to apply high frequency magnetic field, adopt the scheme of mini diameter tube Shu Zuowei separator.Though the employing tubule can shorten move distance, the raising separation efficiency that is mingled with tube wall, but limited the flow of melt greatly by pipe, increased resistance to flow, and tubule obstruction easily in use, therefore be unfavorable for realizing plant-scale continuous processing; But if adopt the separator of big caliber, owing to the surface action of high frequency magnetic field, electromagnetic field only concentrates near the zone the close tube wall in the pipe again, and electromagnetic action is very weak in the central zone, is in the interior separation efficiency that is mingled with in this zone and is subjected to very big influence.
Summary of the invention: the present invention is directed to the deficiencies in the prior art, a kind of device of removing nonmetallic inclusions from aluminum melts is provided, compound alternating magnetic field, the effect of melt secondary flow and strainer, utilize the secondary flow of melt in the separator cross section to impel being mingled with of central zone to transport to the external region, utilize electromagnetic field that the ability that is mingled with is caught in small high efficiency separation effect that is mingled with and strainer absorption again, when further raising is mingled with removal efficient, can increase the separator aperture, improve the flow of melt, reduce resistance to flow, reduce the possibility that separator stops up, prolong its work-ing life.The present invention mainly is made up of electromagnetic generator, separator and gating system three parts, and separator places electromagnetic generator inside, and connects into an integral body with gating system.Electromagnetic generator comprises ruhmkorff coil, transformer and high frequency electric source, and high frequency electric source can convert high-frequency alternating current to the industrial-frequency alternating current of 380V through overcommutation, filtering and inversion; The input terminus of transformer links to each other with high frequency electric source, can convert the high voltage low current of high frequency electric source output to low voltage and high current; Ruhmkorff coil links to each other with the output terminal of transformer, can produce magnetic induction density＞0.1T, frequency in ruhmkorff coil inside and be the evenly axial alternating magnetic field about 20kHz; Separator adopts the porcelain filter of square clear opening, and wherein the size of single square hole is about 10mm * 10mm; Separator places in the ruhmkorff coil, and an end is connected with the inlet of gating system, and the other end is connected with the outlet of gating system, and pending melt is from entering the mouth continuously, enter reposefully tripping device, and clean melt then flows out from outlet.Aluminium and aluminium alloy melt enter the electromagnetic separation separator by inlet, in the process of separator channel of flowing through, melt can be subjected to pointing to the electromagnetic body force effect of hole center position, and nonmetal inclusion is owing to exist difference on the electroconductibility with melt, can be subjected to rightabout electromagnetic pinch force effect, and move to separator wall.Because the surface action of alternating magnetic field, electromagnetic action mainly concentrate on the external region of close wall in the through hole.But because distribution of electromagnetic force is inhomogeneous in the separator, cause melt the interior secondary flow of cross section to occur, under the effect that is mixed in secondary flow of central zone, can follow the zone of bath movement, under the effect of electromagnetic field, catch for wall rapidly again to the strong close wall of electromagnetic force.Therefore, can remove effectively and be mingled with.Apply alternating magnetic field by high frequency electric source and rotational symmetry ruhmkorff coil, wide aperture, non-circular clear opening porcelain filter are placed in the coil vertically.Pending aluminium alloy melt imports from inlet continuously, in the process of strainer through hole of flowing through, melt can be subjected to being pointed to by the outside electromagnetism constriction power effect of hole center position, and nonmetal inclusion is owing to exist difference on the electroconductibility with melt, can be subjected to rightabout electromagnetic pinch force effect, and to strainer wall motion until being caught by wall, will be clean melt from exporting effusive.Because it is inhomogeneous to act on the distribution of electromagnetic force of melt in the separator cross section, causes melt except that along the axial flow of strainer through hole, also can produce secondary flow on cross section.Under the effect of secondary flow, the zone of bath movement to the strong close wall of electromagnetic force followed in being mingled with of central zone, hole, catches for wall rapidly under the effect of electromagnetic field again.Porcelain filter and be mingled with between wettability better, can catch effectively and move to being mingled with of separator wall, simultaneously under the effect of electromagnetic pinch force, can prevent that also inclusion is rolled in the melt again by secondary flow.Like this by the composite electromagnetic effects such as transmission and Filtration Adsorption that separate, flow, can in circulating the process of large volume melt, separator catch small being mingled with wherein effectively, satisfy the demand of industrialization continuous production to the high quality aluminium.
The present invention has substantive distinguishing features and marked improvement, is that 0.1T, frequency are in the magnetic field of 20kHz adding magnetic induction density, can be 100mm at the single through hole cross-sectional area of strainer
2During the left and right sides, only need the time of about 5s, can remove in the melt more than 90% nonmetal inclusion greater than 10 μ m.
Description of drawings: Fig. 1 structural representation of the present invention
Embodiment: as shown in Figure 1, the present invention mainly is made up of electromagnetic generator (1), separator (2) and gating system (3) three parts, and separator (2) places electromagnetic generator (1) inside, and connects into an integral body with gating system (3).Electromagnetic generator (1) comprising: ruhmkorff coil (4), transformer (5) and high frequency electric source (6), the input terminus of transformer (5) links to each other with high frequency electric source (6), ruhmkorff coil (4) links to each other with the output terminal of transformer (5), can produce magnetic induction density＞0.1T, frequency in ruhmkorff coil (4) inside and be the evenly axial alternating magnetic field about 20kHz; Separator (2) adopts the porcelain filter of square clear opening, and wherein the size of single square hole is about 10mm * 10mm; Separator (2) places in the ruhmkorff coil (4), and an end is connected with the inlet of gating system (3), and the other end is connected with the outlet of gating system (3).
Claims (3)
1, a kind of device of removing nonmetallic inclusions from aluminum melts, mainly by electromagnetic generator (1), separator (2) and gating system (3) three parts are formed, it is characterized in that separator (2) places electromagnetic generator inside, and connect into an integral body with gating system (3), electromagnetic generator (1) comprising: ruhmkorff coil (4), transformer (5) and high frequency electric source (6), the input terminus of transformer (5) links to each other with high frequency electric source (6), ruhmkorff coil (4) links to each other with the output terminal of transformer (5), separator (2) places in the ruhmkorff coil (4), one end is connected with the inlet of gating system (3), and the other end is connected with the outlet of gating system (3).
2, the device of this removal nonmetallic inclusions from aluminum melts according to claim 1 is characterized in that magnetic induction density＞0.1T, frequency in ruhmkorff coil (4) is the evenly axial alternating magnetic field about 20kHz.
3, the device of this removal nonmetallic inclusions from aluminum melts according to claim 1 is characterized in that separator (2) adopts the porcelain filter of square clear opening, and the size of its single square hole is about 10mm * 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011426209A CN1169980C (en) | 2001-12-11 | 2001-12-11 | Equipment for removing non-metal impurities from molten aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011426209A CN1169980C (en) | 2001-12-11 | 2001-12-11 | Equipment for removing non-metal impurities from molten aluminium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1363700A true CN1363700A (en) | 2002-08-14 |
| CN1169980C CN1169980C (en) | 2004-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011426209A Expired - Fee Related CN1169980C (en) | 2001-12-11 | 2001-12-11 | Equipment for removing non-metal impurities from molten aluminium |
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| CN (1) | CN1169980C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329536C (en) * | 2005-08-18 | 2007-08-01 | 宝山钢铁股份有限公司 | Electromagnetic cleaning means for hot galvanizing liquid |
| CN100409977C (en) * | 2004-02-24 | 2008-08-13 | 艾尔坎国际有限公司 | Method of priming filter for molten metal |
| CN106498175A (en) * | 2012-04-27 | 2017-03-15 | 挪威科技大学 | Apparatus and method for irrigating filter for molten metal |
| CN107498001A (en) * | 2017-09-08 | 2017-12-22 | 大连理工大学 | The pouring cup device with electromagnetism purified treatment for magnesium iron mold continuous production |
| CN109986039A (en) * | 2019-05-16 | 2019-07-09 | 辽宁忠旺集团有限公司 | A kind of chute melt Electromagnetic Treatment device and its treatment process |
-
2001
- 2001-12-11 CN CNB011426209A patent/CN1169980C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409977C (en) * | 2004-02-24 | 2008-08-13 | 艾尔坎国际有限公司 | Method of priming filter for molten metal |
| CN1329536C (en) * | 2005-08-18 | 2007-08-01 | 宝山钢铁股份有限公司 | Electromagnetic cleaning means for hot galvanizing liquid |
| CN106498175A (en) * | 2012-04-27 | 2017-03-15 | 挪威科技大学 | Apparatus and method for irrigating filter for molten metal |
| CN106498175B (en) * | 2012-04-27 | 2019-03-12 | 挪威科技大学 | Device and method for filter for molten metal to be perfused |
| CN107498001A (en) * | 2017-09-08 | 2017-12-22 | 大连理工大学 | The pouring cup device with electromagnetism purified treatment for magnesium iron mold continuous production |
| CN107498001B (en) * | 2017-09-08 | 2023-08-11 | 大连理工大学 | Pouring cup device with electromagnetic purification treatment for continuous production of ductile iron casting mold |
| CN109986039A (en) * | 2019-05-16 | 2019-07-09 | 辽宁忠旺集团有限公司 | A kind of chute melt Electromagnetic Treatment device and its treatment process |
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| Publication number | Publication date |
|---|---|
| CN1169980C (en) | 2004-10-06 |
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| C10 | Entry into substantive examination | ||
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Granted publication date: 20041006 Termination date: 20100111 |