CN105969996A - Magnesium alloy melting refining and casting device and method - Google Patents
Magnesium alloy melting refining and casting device and method Download PDFInfo
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- CN105969996A CN105969996A CN201610219882.XA CN201610219882A CN105969996A CN 105969996 A CN105969996 A CN 105969996A CN 201610219882 A CN201610219882 A CN 201610219882A CN 105969996 A CN105969996 A CN 105969996A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
- C22B9/023—By filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
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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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Abstract
The invention provides a magnesium alloy melting refining and casting device and method. The magnesium alloy melting refining and casting device comprises a melting refining furnace, a sedimentation heat preserving furnace and a rod casting device body. The melting refining furnace, the sedimentation heat preserving furnace and the rod casting device body are connected through vacuum pumps. The melting refining furnace and the sedimentation heat preserving furnace are each internally provided with gas feeding pipes which communicate with an inert gas source. The rod casting device body comprises a feeding plate and rod casting openings communicating with the feeding plate through material distributing grooves. The lower end of each rod casting opening is provided with a receiving plate. Each rod casting opening is internally provided with a gas inlet ring. Gas inlets in the gas inlet rings communicate with the inert gas source. The top of each rod casting opening is provided with a gas protection cover. The feeding plate is connected with the sedimentation heat preserving furnace through the vacuum pumps. Casting is completed with the magnesium alloy melting refining and casting method through the magnesium alloy melting refining and casting device. The magnesium alloy melting refining and casting device and method have the advantage that magnesium alloy good in surface quality and structure morphology is obtained.
Description
Technical field
The present invention relates to a kind of magnesium alloy circular ingot half-continuous casting method being applicable to magnesium alloy extrusion, it is provided that a kind of with
It is main skill without (micro-) solvent refined, Serum Magnesium quantitative transmission, hot top solid matter oil-air lubrication semi-continuous casting, environmental protection gas shield
Art, it is thus achieved that high-quality magnesium alloy circle ingot casting.Compared with similar manufacture method, the method not only obtains casting of magnesium alloy ingot surface matter
Amount is good and tissue topography is uniform, and efficiency is high, environment friendly and pollution-free.
Background technology
Magnesium and magnesium alloy and other major metal material ratio, have light specific gravity (density 1.8 of magnesium, for the 2/3 of aluminum, steel
1/4), specific strength and specific stiffness are high, and damping and amortization and machinability are good, and heat conductivity is good, electromagnetic shielding capability is strong and damping
The series of advantages such as good and be easily recycled, the application in fields such as automobile, telecommunications, track traffic, Aero-Space is the widest
General.
The chemical property of magnesium alloy own is relatively active, and its electronegativity is relatively big, in smelting process easily with external agency (such as oxygen
Gas) reaction generates oxide, if these oxides are involved in magnesium alloy fused mass by becoming being mingled with in ingot casting, in turn results in workpiece
Mechanical properties decrease.Additionally, the oxide of magnesium itself loosens, consistency coefficient is little, and they are when magnesium alloy fused mass occurs oxidation
Can not play the effect of protection isolation, therefore melt can burn further.This melt scaling loss not only makes execute-in-place
There is danger in environment, and causes raw material losses serious, and final acquisition cc billet surface quality is poor.Traditional magnesium alloy cast
Method is difficult to avoid that melt burning, oxidation behavior, and cc billet surface quality is poor, and segregation layer is thicker, needs the later stage to carry out machining
(such as turning), therefore the method easily causes a large amount of waste.Therefore, R and D acquisition high-quality magnesium alloy strand technology has
High basic research is worth and wide practical prospect.
At present, the key technology such as the efficient melting technique of domestic magnesium alloy materials and equipment, remain restriction magnesium alloy materials
The bottleneck of industrialization.China's existing magnesium alloy circle ingot casting technology of preparing, still continues to use the bench of burners fusing of group in early days, admixture solvent
Refine, employing SF6 gas carry out protecting, applying graphite lubrication semi-continuous casting technology ingot casting, produce low (the disposable ingot casting of effect
Number 1), ingot casting rough surface, segregation thickness, coarse grains, need turning peeling use.Existence compared with Foreign Advanced Lerel
Bigger gap.
Summary of the invention
For China's existing magnesium alloy circle ingot casting technology of preparing, still continue to use the bench of burners fusing of group in early days, admixture solvent
Refine, employing SF6 gas carry out protecting, applying graphite lubrication semi-continuous casting technology ingot casting, produce low (the disposable ingot casting of effect
Number 1), there is the problems such as coarse grains, rough surface, segregation thickness is not enough in magnesium alloy circle ingot casting, by carrying kind of an a kind of magnesium
Alloy melting casting device and method, it is thus achieved that excellent surface quality and the magnesium alloy of tissue topography.The magnesium that this invention is prepared closes
Gold ingot casting crystallite dimension is less than 100 μm, smooth surface and flawless, it is achieved that Efficient Ring less than 200 μm, surface segregation layer thickness
Protect the purpose of casting high-quality magnesium alloy billet.
Realization the technical scheme is that, a kind of magnesium alloy smelting Casting Equipment includes melting refinement stove, sedimentation insulation
Stove, casting rod device, melting refinement stove, sedimentation be attached by vacuum pump between holding furnace, casting rod device, described melting refinement
It is all provided with, to trachea, connecting with inertia source of the gas to trachea in stove, sedimentation holding furnace；
Described casting rod device includes entry table, and connects casting rod mouth with entry table by material-dividing groove, and casting rod mouth lower end sets undertaking
Dish, sets air inlet ring in casting rod mouth, the air inlet on air inlet ring connects with inertia source of the gas, and described casting rod body top is provided with gas and protects
Guard shield；
Material separating disc is connected with sedimentation holding furnace by vacuum pump.
Further, casting rod mouth upper end is provided with seal bar, and seal bar one end passes gas shield cover.
Further, seal bar has driving motor, on gas shield cover inwall through connection on gas shield cover one end
Being provided with infrared scanner, infrared scanner is connected with driving motor by controller.
Further, vacuum pump is for quantitatively turning liquid vacuum pump.
Further, melting refinement stove mechanical agitation and gravity circulation filter type carry out auto purification to Serum Magnesium.
A kind of magnesium alloy smelting casting method comprises the following steps:
Step 1) magnesium ingot, intermediate alloy ingot added magnesium alloy melting furnace fusing and generate Serum Magnesium after entering the pre-heat treatment；
Step 2) after Serum Magnesium fusing reaches 720 DEG C of temperature, proceed by mechanical agitation, carry out oneself by mechanical pump simultaneously and follow
Ring, Serum Magnesium implements Serum Magnesium auto purification by gravity filtration during self-loopa；
Step 3) step 2 stops after implementing 8-15 min, and in fusing stove, Serum Magnesium is transferred in holding furnace via vacuum pump；
Step 4) Serum Magnesium carries out point warm area in sedimentation holding furnace and implements gravity filtration, it is achieved the further auto purification of Serum Magnesium；
Step 5)；Serum Magnesium vacuum pump in sedimentation holding furnace is transferred to shunting disk, and is delivered to casting rod mouth through entry table.
Further, step 1), step 2), step 3), step 4), step 4) be in closed state.
Further, in step 3), step 6), the transmission of Serum Magnesium uses the transmission of infrared detection fixing quantity.
The invention have the advantages that 1) lifting of material surface quality, it is similar material that this experiment at present obtains casting of magnesium alloy ingot surface
In material of a relatively high, and advantage of lower cost, decrease the process of machining turning surface.
2). the present invention prepares magnesium alloy ingot and achieves the Effective Regulation of crystallite dimension, with tradition magnesium alloy cast method
Compare and have more promotion prospect.
3). the present invention to prepare magnesium alloy ingot production efficiency of a relatively high, disposable ingot casting number can be realized and reach 8
Above, the above factor all advantageously reduces the preparation cost of this material, has boundless application prospect.
4). the present invention prepare magnesium alloy ingot produce environmental protection effect the most prominent, stopped the use of SF6 gas.
5) in casting process reduce solvent usage amount, just correspond to existing methods 10 less than.
Accompanying drawing explanation
Fig. 1 is magnesium alloy smelting casting device structural representation.
Fig. 2 is melting refinement furnace structure schematic diagram.
Fig. 3 is sedimentation holding furnace structural representation.
Fig. 4 is casting rod apparatus structure schematic diagram.
Fig. 5 is A-A sectional schematic diagram in Fig. 4.
Fig. 6 is casting rod device preferred structure schematic diagram.
Fig. 7 is another preferred structure schematic diagram of casting rod device.
In figure, melting refinement stove 1, sedimentation holding furnace 2, casting rod device 3, vacuum pump 4, to trachea 5, mechanical agitation axle
11, mechanical pump 12, backflash 13, compartment 21, through hole 22, casting rod mouth 31, tray 32, gas shield cover 33, air inlet ring 34, point
Hopper 312, entry table 313, controller 315, seal bar 6, driving motor 7, infrared scanner 8.
Specific embodiment
In Fig. 1, a kind of magnesium alloy smelting Casting Equipment includes melting refinement stove 1, sedimentation holding furnace 2, casting rod device 3,
Melting refinement stove 1, sedimentation are attached by vacuum pump 4 between holding furnace 2, casting rod device 3, it is preferred that vacuum pump 4 is quantitative
Turn liquid vacuum pump, be all provided with, to trachea 5, connecting with inertia source of the gas to trachea 5 in melting refinement stove 1, sedimentation holding furnace 2；
In Fig. 2, melting refinement stove 1 includes feed zone, discharge zone, connects to trachea 5 and melting refinement stove 1 are internal, indifferent gas
Body all can enter feed zone, discharge zone, and mechanical agitation axle 11 is located at feed zone, and mechanical pump 12 is located at discharge zone, feed zone lower end
Being connected by mechanical pump 12 with lower end, discharge zone, feed zone upper end is connected by backflash 13 with upper end, discharge zone, during work, and machine
The Serum Magnesium of feed zone is stirred by tool shaft 11, and mechanical pump 12 is by the Serum Magnesium suction discharge zone of feed zone, and is going out
In material district, gravitational settling filters, and then the purer Serum Magnesium in ground is back to feed zone from backflash 13, during melting refinement repeatedly mutually
Carry out aforesaid operations, the impurity in Serum Magnesium can be removed.
In Fig. 3, sedimentation holding furnace 2 includes multiple compartment 21, connects to trachea 5 is internal with sedimentation holding furnace 2, indifferent gas
Body all can enter each compartment 21, is connected by through hole 22 between adjacent compartment, and the compartment 21 near melting refinement stove 1 passes through true
Empty pump 4 connects with melting refinement stove 1, and the compartment 21 near casting rod device 3 is connected with casting rod device 3 by vacuum pump 4
Such as Fig. 4, in 5, casting rod device includes entry table 313, and connects casting rod mouth 31 by material-dividing groove 312 with entry table 313, excellent
Choosing, an entry table 313 can connect multiple casting rod mouth 31 by a plurality of material-dividing groove 312, and casting rod mouth 31 lower end sets tray
32, set air inlet ring 34 in casting rod mouth 31, the air inlet on air inlet ring 34 connects with inertia source of the gas, in Fig. 1, casting rod body 31 top
Being provided with gas shield cover 33, entry table 313 is connected with sedimentation holding furnace by vacuum pump.During work, beforehand through air inlet ring 34
On air inlet inject noble gas to casting rod mouth 31 hollow interior, its interior air is discharged, entry table 313 passes through material-dividing groove
312 inject Serum Magnesium to casting rod mouth 31, and when being worked by tray 32(, tray 32 lower end is located in water simultaneously, tray 32 times
Fall process utilizes water to lower the temperature Serum Magnesium, so that magnesium rod quick shaping) average rate decline, i.e. define magnesium rod, it is preferred that
One air gauge is set on gas shield cover 33, may determine that the air of content is arranged the most by reading the reading in air gauge
To the greatest extent.
In Fig. 6, it is preferred that casting rod mouth 31 upper end is provided with seal bar 6, seal bar 6 one end passes gas shield cover, seals
The rod 6 one end alignment casting rod mouth 31 in gas shield cover 33, when casting rod, because magnesium rod is burnt by cooling water, when guiding spark,
It was that the process of whole casting rod is stopped in the past, and then processed, extremely affect the efficiency of casting rod, use seal bar 6, Ke Yi
After finding above-mentioned situation, the most just seal bar 6 glides and seals the casting rod mouth of spark, makes casting rod mouth stop entering Serum Magnesium,
And the casting rod mouth 31 of other normal casting rod works.
In Fig. 7, seal bar 6 has driving motor 7 through connection on gas shield cover 33 one end, in gas shield cover 33
Wall is provided with infrared scanner 8, and infrared scanner 8 is connected with driving motor 7 by controller 315.During work, each infrared sweep
Retouch instrument 8 and be directed at a casting rod mouth 31, when discovery casting rod mouth 31 has blink (when occurring that obvious brightness strengthens), infrared scan
The data input controller 315 of instrument 8, controller 315 is i.e. by driving motor 7 to drive seal bar 6 to glide, to there being the casting rod used up
Mouth 31 seals.
Preferably, vacuum pump 4 is for quantitatively turning liquid vacuum pump.
A kind of magnesium alloy smelting casting method comprises the following steps:
The present invention is a kind of magnesium alloy smelting casting method, comprises the following steps:
(1) magnesium ingot and intermediate alloy ingot are heated to 150 DEG C-200 DEG C in preheating furnace, dry surface moisture；
(2) magnesium ingot and intermediate alloy ingot after the pre-heat treatment are heated to 720 DEG C at magnesium alloy melting furnace inner sealing and are completely melt, raw
Become magnesium solution；
(3) Serum Magnesium after being completely melt carries out refine remove impurity through circulation stirring and gravity filtration in magnesium alloy melting furnace,
Carry out 8-15 to stop for min minute；
(4) Serum Magnesium that refine is complete is transferred to settle in holding furnace via vacuum pump；
(5) Serum Magnesium sequentially passes through different warm area at holding furnace and melts room (compartment 21) and to again pass by gravity filtration the cleanest
Change；
(6) Serum Magnesium completing to purify stands 30min in sedimentation holding furnace；
(7) debugging launder system, baking chute is to 1000 DEG C, and preheating quantitative casting system is to 900 DEG C；
(8) stand complete Serum Magnesium via in quantitative casting system transfers to entry table, and be delivered to casting rod mouth through entry table；
Preferably, step 1-8 is in closed state, and completes (preferably, magnesium conjunction under the inert gas shielding of non-SF6 gas
Gold all uses SF6 to substitute gas in fusing, refine, transmission, casting cycle and protects melt, it is achieved magnesium alloy smelting waters
Casting cleanly production).
Serum Magnesium by smelting furnace to holding furnace, by holding furnace to casting platform all use automatically control machinery pump transmission, both
Ensure Serum Magnesium in transmitting procedure not by ambient atmos secondary pollution, simultaneously by guarantee Serum Magnesium in transmitting procedure by design
Automatic detection technology of parameter fixing quantity.
Claims (8)
1. a magnesium alloy smelting Casting Equipment, it is characterised in that: described equipment includes melting refinement stove, sedimentation holding furnace, casting
Bar device, melting refinement stove, sedimentation be attached by vacuum pump between holding furnace, casting rod device, described melting refinement stove, sink
It is all provided with, to trachea, connecting with inertia source of the gas to trachea in fall holding furnace；
Described casting rod device includes entry table, and connects casting rod mouth with entry table by material-dividing groove, and casting rod mouth lower end sets undertaking
Dish, sets air inlet ring in casting rod mouth, the air inlet on air inlet ring connects with inertia source of the gas, and described casting rod body top is provided with gas and protects
Guard shield；
Material separating disc is connected with sedimentation holding furnace by vacuum pump.
A kind of magnesium alloy smelting Casting Equipment the most according to claim 1, it is characterised in that: described casting rod mouth upper end is provided with
Seal bar, seal bar one end passes gas shield cover.
A kind of magnesium alloy smelting Casting Equipment the most according to claim 2, it is characterised in that: described seal bar passes gas
Connecting on protective cover one end and have driving motor, be provided with infrared scanner on gas shield cover inwall, infrared scanner is by control
Device processed is connected with driving motor.
A kind of magnesium alloy smelting Casting Equipment the most according to claim 1 and 2, it is characterised in that: described vacuum pump is fixed
Amount turns liquid vacuum pump.
A kind of magnesium alloy smelting Casting Equipment the most according to claim 1, it is characterised in that: described melting refinement stove machinery
Stirring and gravity circulation filter type carry out auto purification to Serum Magnesium.
6. a magnesium alloy smelting casting method, is characterized in that: method comprises the following steps:
Step 1) magnesium ingot, intermediate alloy ingot added magnesium alloy melting furnace fusing and generate Serum Magnesium after entering the pre-heat treatment；
Step 2) after Serum Magnesium fusing reaches 720 DEG C of temperature, proceed by mechanical agitation, carry out oneself by mechanical pump simultaneously and follow
Ring, Serum Magnesium implements Serum Magnesium auto purification by gravity filtration during self-loopa；
Step 3) step 2 stops after implementing 8-15 min, and in fusing stove, Serum Magnesium is transferred in holding furnace via vacuum pump；
Step 4) Serum Magnesium carries out point warm area in sedimentation holding furnace and implements gravity filtration, it is achieved the further auto purification of Serum Magnesium；
Step 5)；Serum Magnesium vacuum pump in sedimentation holding furnace is transferred to shunting disk, and is delivered to casting rod mouth through entry table.
The most according to claim 6, a kind of magnesium alloy smelting casting method, its feature exists: described step 1), step 2), step
Rapid 3), step 4), step 4) are in closed state.
The most according to claim 6, a kind of magnesium alloy smelting casting method, its feature exists: magnesium in described step 3), step 6)
The transmission of melt uses the transmission of infrared detection fixing quantity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610219882.XA CN105969996B (en) | 2016-04-11 | 2016-04-11 | A kind of magnesium alloy smelting Casting Equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610219882.XA CN105969996B (en) | 2016-04-11 | 2016-04-11 | A kind of magnesium alloy smelting Casting Equipment and method |
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| CN105969996A true CN105969996A (en) | 2016-09-28 |
| CN105969996B CN105969996B (en) | 2018-03-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373559A (en) * | 2019-08-26 | 2019-10-25 | 上海交通大学 | A kind of method of suitable magnesium and magnesium alloy smelting and casting |
| CN112553474A (en) * | 2020-11-04 | 2021-03-26 | 芜湖楚江合金铜材有限公司 | Smelt nitrogen gas mixing stirring device for compartment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748293A (en) * | 2008-11-27 | 2010-06-23 | 北京有色金属研究总院 | Magnesium alloy refining unit |
| CN102146526A (en) * | 2011-02-22 | 2011-08-10 | 宁夏惠冶镁业集团有限公司 | Smelting equipment for magnesium alloy and new energy-saving production process for novel magnesium alloy |
| CN104841898A (en) * | 2015-05-11 | 2015-08-19 | 苏州有色金属研究院有限公司 | Method and device capable of producing multiple pieces of magnesium alloy cast sticks simultaneously |
| CN205710864U (en) * | 2016-04-11 | 2016-11-23 | 宜昌宏箭铝业有限责任公司 | A kind of magnesium alloy smelting Casting Equipment |
-
2016
- 2016-04-11 CN CN201610219882.XA patent/CN105969996B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748293A (en) * | 2008-11-27 | 2010-06-23 | 北京有色金属研究总院 | Magnesium alloy refining unit |
| CN102146526A (en) * | 2011-02-22 | 2011-08-10 | 宁夏惠冶镁业集团有限公司 | Smelting equipment for magnesium alloy and new energy-saving production process for novel magnesium alloy |
| CN104841898A (en) * | 2015-05-11 | 2015-08-19 | 苏州有色金属研究院有限公司 | Method and device capable of producing multiple pieces of magnesium alloy cast sticks simultaneously |
| CN205710864U (en) * | 2016-04-11 | 2016-11-23 | 宜昌宏箭铝业有限责任公司 | A kind of magnesium alloy smelting Casting Equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373559A (en) * | 2019-08-26 | 2019-10-25 | 上海交通大学 | A kind of method of suitable magnesium and magnesium alloy smelting and casting |
| CN112553474A (en) * | 2020-11-04 | 2021-03-26 | 芜湖楚江合金铜材有限公司 | Smelt nitrogen gas mixing stirring device for compartment |
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| Publication number | Publication date |
|---|---|
| CN105969996B (en) | 2018-03-16 |
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Address after: 443100, No. 168 Yi Xing Road, Yiling District, Hubei, Yichang Applicant after: HUBEI HONGJIAN LIGHT ALLOY MATERIAL TECHNOLOGY CO.,LTD. Address before: 443100, No. 168 Yi Xing Road, Yiling District, Hubei, Yichang Applicant before: YICHANG HONGJIAN ALUMINIUM INDUSTRY Co.,Ltd. |
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Denomination of invention: A magnesium alloy melting and casting equipment and method Effective date of registration: 20230208 Granted publication date: 20180316 Pledgee: Bank of China Limited by Share Ltd. Three Gorges Branch Pledgor: HUBEI HONGJIAN LIGHT ALLOY MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2023420000031 |
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