CN203556850U - Cast device for vacuum-rotating and electromagnetically stirring refined alloy crystal grains - Google Patents
Cast device for vacuum-rotating and electromagnetically stirring refined alloy crystal grains Download PDFInfo
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- CN203556850U CN203556850U CN201320739712.6U CN201320739712U CN203556850U CN 203556850 U CN203556850 U CN 203556850U CN 201320739712 U CN201320739712 U CN 201320739712U CN 203556850 U CN203556850 U CN 203556850U
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- 238000003756 stirring Methods 0.000 title claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 239000013078 crystal Substances 0.000 title abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 54
- 230000006698 induction Effects 0.000 claims abstract description 11
- 238000013019 agitation Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 14
- 230000003028 elevating effect Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 239000000498 cooling water Substances 0.000 abstract description 6
- 238000005204 segregation Methods 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000009845 electric arc furnace steelmaking Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to the field of metal material casting, in particular to a precise cast device for vacuum-rotating and electromagnetically stirring refined alloy crystal grains. An induction furnace and a cast mold chamber are arranged in a smelting chamber of the cast device, and the induction furnace is located above the cast mold chamber. A rotary electromagnetic stirrer is arranged in the cast mold chamber and composed of an electromagnetic stirring coil and a cooling water jacket, the electromagnetic stirring coil is located on the outer side of the cooling water jacket, a cast mold is located on the inner side of the cooling water jacket, and the rotary electromagnetic stirrer is separated from the cast mold in the cast mold chamber through the cooling water jacket. By means of a rotary electromagnetic stirring control system, three-phase alternating currents are converted to fixed direct-current voltages through a rectifier and then converted to alternating currents with adjustable frequency and voltage through an inverter circuit to be output to the electromagnetic stirring coil, the electromagnetic stirring coil is driven to form a rotation magnetic field, molten steel is stirred through the rotation magnetic field, the content of included slag in castings can be lowered, central line shrinkage is lowered, gross segregation is eliminated, and the isometric crystal ratio of the castings is improved.
Description
Technical field
The utility model relates to metal material casting field, is specially a kind of hot investment casting device of vacuum rotating electromagnetic agitation refinement alloy grain.
Background technology
Magnetic stirrer (Electromagnetic stirring: be called for short EMS) is first invented by Sweden ASEA company.Doctor Dreyfus in 1932 is according to Faraday's electromagnetic induction principle, finds that the induced field that low speed is moving can produce strong stirring action to molten steel, produces in the world First magnetic stirrer and for electric-arc furnace steelmaking in 1948.Along with development and the maturation of steel-smelting technology, electromagnetic agitating technology is applied to continuous casting installation for casting gradually.
The sixties in 20th century, the Beohler conticaster of Austrian Kapfanberg factory is brought into use electromagnetic agitating technology cast alloys steel.20 century 70s, French Gang Yan institute (IRSID) has carried out the type approval test of linear electromagnetic stirring technology first on billet caster.British Steel Corp. (BSC) has also carried out similar test, and electromagnetic agitation is improved the subcutaneous quality of silicon aluminium killed steel, in test, owing to having adopted low frequency electromagnetic field, has improved stirring efficiency, is applied aborning soon very much.Subsequently, rotary EMS technology starts to make progress gradually.
The essence of electromagnetic agitation is by the electromagnetic force of inducting in strand liquid, to strengthen the motion of the molten metal rotation of the meltings such as molten steel (aluminium water).Based on Principle of Electric Engine simply from the principle: have the revolving-field type magnetic stirrer based on rotation asynchronous machine principle, also there is the travelling-magnetic-field formula magnetic stirrer based on linear induction motor principle, it is to utilize electromagnetic induction to try hard to recommend moving high-temperature liquid state molten steel in crystallizer, to do to stipulate to flow, to improve strand inherent quality.Take three phase rotating field agitator as example, agitator is equivalent to the stator of motor, and molten steel (strand) is equivalent to the rotor of motor.Like this, the action principle of electromagnetic agitation just can be comparable with Solid Rotor Asynchronous Motors.
After applying magnetic stirrer near molten metal, the low frequency variable electromagnetic field penetrating metal liquid that magnetic stirrer produces, and between molten metal, produce relative motion, the magnetic flux in molten metal is changed, be equivalent to magnetic field with certain speed cutting metal liquid, make its inner induced-current that produces.This induced-current produces electromagnetic force with the magnetic field interaction that inductor produces again, acts on each volume element of molten metal, thereby drives rotatablely moving of molten metal.By changing the size of low-frequency power output current, control the magnetic field intensity that magnetic stirrer produces, thereby control the intensity of electromagnetic agitation.By selecting supply frequency, magnetic stirrer pattern, apply position and combining form etc. and meet the requirement of different casting process different-alloy kinds.
Utility model content
The purpose of this utility model is to provide a kind of casting device of vacuum rotating electromagnetic agitation refinement alloy grain, utilize vacuum rotating electromagnetic agitation not only can realize the effect of crystal grain thinning, but also can reduce component segregation and the loose metallurgical imperfection that waits in alloy-steel casting.
The technical solution of the utility model is:
A casting device for vacuum rotating electromagnetic agitation refinement alloy grain, arranges induction furnace and casting mold chamber in this casting device working chamber, induction furnace is positioned at the top of casting mold chamber; Rotary EMS device is set in casting mold chamber, rotary EMS device consists of electromagnetic stirrer coil and cooling jacket, electromagnetic stirrer coil is arranged at cooling jacket outside, and casting mold is arranged at cooling jacket inner side, and rotary EMS device is isolated by the casting mold in cooling jacket and casting mold chamber.
The casting device of described vacuum rotating electromagnetic agitation refinement alloy grain, casting mold chamber is arranged on elevating mechanism, and elevating mechanism is driven by oil pressure pump.
The casting device of described vacuum rotating electromagnetic agitation refinement alloy grain, the top of working chamber arranges temp measuring system, and the side of working chamber is communicated with vacuum system.
The casting device of described vacuum rotating electromagnetic agitation refinement alloy grain, the electromagnetic stirrer coil of rotary EMS device is connected with rotary EMS control system, by rotary EMS control system, provides rotating excitation field for electromagnetic stirrer coil.
The casting device of described vacuum rotating electromagnetic agitation refinement alloy grain, this casting device changes electric current by rotary EMS control system and frequency realizes the control to magnetic field intensity.
The casting device of described vacuum rotating electromagnetic agitation refinement alloy grain, this casting device is realized the conversion between the different electromagnetic agitation modes of continuous stirring, rotating stirring and intermittent stirring by rotary EMS control system.
Advantage of the present utility model and beneficial effect are:
1, in the utility model device, magnetic field intensity can realize free adjustment by this variable power source frequency and size of current, and magnetic fields time and magnetic field rotating direction can free adjustment, and the stirring combination in magnetic field can be set easily.
2, the utility model device utilizes vacuum rotating electromagnetic agitation not only can realize the effect of crystal grain thinning, but also can reduce component segregation and the loose metallurgical imperfection that waits in alloy-steel casting.
Accompanying drawing explanation
Fig. 1 is the casting device structural representation of vacuum rotating electromagnetic agitation refinement alloy grain.
Fig. 2 is rotary EMS device structural representation.
In figure, 1 temp measuring system; 2 working chambers; 3 induction furnaces; 4 casting mold chambers; 5 elevating mechanisms; 6 oil pressure pumps; 7 vacuum systems; 8 cooling water systems; 9 rotary EMS control systems; 10 rotary EMS devices; 11 electromagnetic stirrer coils; 12 cooling jackets.
The specific embodiment
Below by embodiment and accompanying drawing, the utility model is described in further detail.
Embodiment
As Figure 1-Figure 2, the casting device of the utility model vacuum rotating electromagnetic agitation refinement alloy grain, this device is comprised of temp measuring system 1, working chamber 2, induction furnace 3, casting mold chamber 4, elevating mechanism 5, oil pressure pump 6, vacuum system 7, cooling water system 8, rotary EMS control system 9 and rotary EMS device 10 etc., and concrete structure is as follows:
Induction furnace 3 and casting mold chamber 4 are set in working chamber 2, and induction furnace 3 is positioned at the top of casting mold chamber 4, and casting mold chamber 4 is arranged on elevating mechanism 5, and elevating mechanism 5 is driven by oil pressure pump 6.The top of working chamber 2 arranges temp measuring system 1, and the side of working chamber 2 is communicated with (Fig. 1) with vacuum system 7.
Rotary EMS device 10 is set in casting mold chamber 4, rotary EMS device consists of electromagnetic stirrer coil 11 and cooling jacket 12, electromagnetic stirrer coil 11 is arranged at cooling jacket 12 outsides (Fig. 2), casting mold is arranged at cooling jacket 12 inner sides, rotary EMS device 10 is isolated with the casting mold in casting mold chamber 4 by cooling jacket 12, the electromagnetic stirrer coil 11 of rotary EMS device 10 is connected with rotary EMS control system 9, by rotary EMS control system 9, provide rotating excitation field for electromagnetic stirrer coil 11, by rotary EMS control system 9, select supply frequency, magnetic stirrer pattern and combining form etc. meet the requirement of different casting process.Thereby can change electric current and frequency realizes the control to magnetic field intensity by control system, by control system, can realize the conversion between the different electromagnetic agitation modes of continuous stirring, rotating stirring and intermittent stirring.
Rotary EMS control system 9 becomes three-phase alternating current into a fixing DC voltage by rectifier, then by inverter circuit, become a frequency and the adjustable alternating current of voltage, export to electromagnetic stirrer coil 11, drive electromagnetic stirrer coil 11 to form rotating excitation field, by rotating excitation field, molten steel is stirred.
The operation principle of rotating excitation field is similar to the stator of common asynchronous moter, when agitator, feeds after three-phase or two-phase alternating current, just in space, excites the rotating excitation field pivoting with translational speed.Whole rotary EMS device 10 easy accessibility can normally be worked by the effect of cooling jacket 12 in strong thermal-radiating hot environment.
Embodiment result shows, the utility model device is easy to realize the setting of control to magnetic field intensity and the different electromagnetic agitation mode such as continuous stirring, rotating stirring and intermittent stirring, can reduce foundry goods slag inclusion content, reduce central pipe, eliminate the equiaxed zone ratio of gross segregation and raising foundry goods etc.
Claims (6)
1. a casting device for vacuum rotating electromagnetic agitation refinement alloy grain, is characterized in that, induction furnace and casting mold chamber are set in this casting device working chamber, and induction furnace is positioned at the top of casting mold chamber; Rotary EMS device is set in casting mold chamber, rotary EMS device consists of electromagnetic stirrer coil and cooling jacket, electromagnetic stirrer coil is arranged at cooling jacket outside, and casting mold is arranged at cooling jacket inner side, and rotary EMS device is isolated by the casting mold in cooling jacket and casting mold chamber.
2. according to the casting device of vacuum rotating electromagnetic agitation refinement alloy grain claimed in claim 1, it is characterized in that, casting mold chamber is arranged on elevating mechanism, and elevating mechanism is driven by oil pressure pump.
3. according to the casting device of vacuum rotating electromagnetic agitation refinement alloy grain claimed in claim 1, it is characterized in that, the top of working chamber arranges temp measuring system, and the side of working chamber is communicated with vacuum system.
4. according to the casting device of vacuum rotating electromagnetic agitation refinement alloy grain claimed in claim 1, it is characterized in that, the electromagnetic stirrer coil of rotary EMS device is connected with rotary EMS control system, by rotary EMS control system, provides rotating excitation field for electromagnetic stirrer coil.
5. according to the casting device of vacuum rotating electromagnetic agitation refinement alloy grain claimed in claim 4, it is characterized in that, this casting device changes electric current by rotary EMS control system and frequency realizes the control to magnetic field intensity.
6. the casting device of vacuum rotating electromagnetic agitation refinement alloy grain according to claim 4, it is characterized in that, this casting device is realized the conversion between the different electromagnetic agitation modes of continuous stirring, rotating stirring and intermittent stirring by rotary EMS control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739712.6U CN203556850U (en) | 2013-11-19 | 2013-11-19 | Cast device for vacuum-rotating and electromagnetically stirring refined alloy crystal grains |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739712.6U CN203556850U (en) | 2013-11-19 | 2013-11-19 | Cast device for vacuum-rotating and electromagnetically stirring refined alloy crystal grains |
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| Publication Number | Publication Date |
|---|---|
| CN203556850U true CN203556850U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320739712.6U Expired - Lifetime CN203556850U (en) | 2013-11-19 | 2013-11-19 | Cast device for vacuum-rotating and electromagnetically stirring refined alloy crystal grains |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482847A (en) * | 2018-12-27 | 2019-03-19 | 江苏奇纳新材料科技有限公司 | Magnetic-moves the molding machine and method of combined precision complexity fine grain casting |
| CN111702182A (en) * | 2020-08-05 | 2020-09-25 | 矿冶科技集团有限公司 | Preparation method of low-impurity-content alloy powder for additive manufacturing |
| CN115608966A (en) * | 2022-10-11 | 2023-01-17 | 东北大学 | Vacuum smelting furnace and method for realizing electromagnetic oscillation stirring of precision casting with flat structure |
-
2013
- 2013-11-19 CN CN201320739712.6U patent/CN203556850U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482847A (en) * | 2018-12-27 | 2019-03-19 | 江苏奇纳新材料科技有限公司 | Magnetic-moves the molding machine and method of combined precision complexity fine grain casting |
| CN111702182A (en) * | 2020-08-05 | 2020-09-25 | 矿冶科技集团有限公司 | Preparation method of low-impurity-content alloy powder for additive manufacturing |
| CN115608966A (en) * | 2022-10-11 | 2023-01-17 | 东北大学 | Vacuum smelting furnace and method for realizing electromagnetic oscillation stirring of precision casting with flat structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
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| CX01 | Expiry of patent term |