CN107166981A - A kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace - Google Patents
A kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace Download PDFInfo
- Publication number
- CN107166981A CN107166981A CN201710468899.3A CN201710468899A CN107166981A CN 107166981 A CN107166981 A CN 107166981A CN 201710468899 A CN201710468899 A CN 201710468899A CN 107166981 A CN107166981 A CN 107166981A
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- Prior art keywords
- electromagnetic induction
- holding furnace
- control unit
- electromagnetic
- frequency
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Links
- 230000005674 electromagnetic induction Effects 0.000 title claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000003993 interaction Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 2
- 238000005058 metal casting Methods 0.000 abstract description 2
- 238000005204 segregation Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000013019 agitation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D27/00—Stirring devices for molten material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Induction Heating (AREA)
Abstract
The present invention relates to a kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace, it is that industrial-frequency alternating current is become into high-frequency alternating current, the electromagnetic induction coil of the output termination electromagnetic induction holding furnace of inversion module by rectification module, filtration module and inversion module；The output end of the inversion module is further connected with the automatic switching type shunt capacitor group connected with electromagnetic induction coil；Control unit is additionally provided with, control unit is connected to control its capacitor input quantity with automatic switching type shunt capacitor group control line, so as to obtain different resonant frequencies, makes electromagnetic induction holding furnace that there is high-frequency heating operational mode and low frequency stirring operational mode；The present invention is set by man-machine interaction unit, controls electromagnetic induction holding furnace to be in a variety of stirrings/heating operational mode by control unit, efficiently solves the quality problems such as segregation, shrinkage cavity, formation column crystal that metal casting, especially alloy casting occur.
Description
Technical field
The present invention relates to melter technology field, and in particular to a kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace.
Background technology
In order to improve nonferrous metal product quality, liquid metal must be carried out in metal smelt or fusion process abundant
Stirring.The method of stirring mainly includes hand operated mixing and electromagnetic agitation, wherein, the mixing quality of hand operated mixing is poor, stirring
It is less efficient, but advantage is that cost is low.The operation principle of electromagnetic agitation is：Variable-frequency power sources is defeated to the induction coil of electromagnetic inductor
0.8-3.5HZ ultralow frequency alternating current is sent, the iron core of inductor produces travelling-magnetic-field.Acted on when travelling-magnetic-field penetrates furnace wall
During molten metal, in the presence of long-range navigation magnetic force, molten metal will produce regular flowing, so as to reach to molten metal
The purpose being stirred, you can the quality problems such as the effective segregation for solving metallic article, shrinkage cavity, formation column crystal.
Resistance heating manner being used Chuan Tong Lv founding holding furnaces, not only the thermal efficiency is low, and can not realize to metal more
The stirring of solution, thus the uniformity of uncontrollable metal alloy composition, are also just difficult to control to product quality；Ordinary electromagnetic senses
Holding furnace is the high frequency single-phase alternating current that three-phase main-frequency alternating current is become to 10-20KHZ by rectification, filtering and inversion link,
Then connect electromagnetic induction coil and metallic solution is transferred energy to by way of electromagnetic induction, reach to metallic solution
Heating and thermal insulation effect；Using ordinary electromagnetic holding furnace, although efficiency 30% or so can be improved, but because working frequency is higher, it is difficult to
The viscous effect of aluminium liquid is overcome to produce mixing effect, it is impossible to realize effective control to alloy product quality.
The content of the invention
The present invention is directed to existing melter technology above shortcomings, it is desirable to provide a kind of electromagnetic induction holding furnace longitudinal direction electricity
Magnetic agitating device, to realize its stable and reliable in work, strong interference immunity, have high efficiency and electromagnetic agitation function concurrently.
The technical solution used in the present invention is as follows：
A kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace, electromagnetic induction holding furnace is by rectification module, filtration module
Industrial-frequency alternating current is become into high-frequency alternating current, the electromagnetism sense of the output termination electromagnetic induction holding furnace of inversion module with inversion module
Coil is answered, to realize the heating and thermal insulation to metallic solution by way of electromagnetic induction, its special character is embodied in：The inversion mould
The output end of block is further connected with the automatic switching type shunt capacitor group connected with electromagnetic induction coil；Control unit is additionally provided with, is controlled
Unit processed is connected to control its capacitor input quantity with automatic switching type shunt capacitor group control line, so as to obtain different resonance
Frequency, make electromagnetic induction holding furnace that there is high-frequency heating operational mode and low frequency stirring operational mode；Control unit
Inversion module is driven by driver element and inversion module output low frequency or high-frequency alternating current is controlled；Control unit data cube computation has
Man-machine interaction unit, to carry out parameter setting to control unit by man-machine interaction unit, parameter at least includes stirring/heating
Switching instant t, time distribution（t1,t2）, stirring intensity control (μ) in one kind or any combination so that control unit is real
Now relevant control is carried out according to setup parameter.
Above-mentioned different parameters or parameter combination is solidified in controller in the form of corresponding operational mode；Above-mentioned stirs
Mix/heat switching instant t or time distribution（t1,t2）Can be the specific time value of setting or the liquid gold in stove
Category temperature carries out the temperature that liquid metal temperature in " heating → stirring " switching or stove is down to setting when rising to the temperature threshold of setting
" stirring → heating " switching is carried out when spending threshold value.
Output current and voltage sampling circuit are additionally provided with, and phase-locked loop pll is set, according to PLL output results, by controller
Output frequency is finely adjusted, it is ensured that under various operation conditions, equipment works under resonance condition.
Control unit is also connected to realize temperature detection with the heat detector control line on electromagnetic induction holding furnace.
The beneficial effects of the present invention are：It can be set by man-machine interaction unit, and electromagnetic induction is controlled by control unit
Holding furnace is in a variety of stirrings/heating operational mode, efficiently solves metal casting, and especially alloy casting appearance is inclined
The quality problems such as analysis, shrinkage cavity, formation column crystal.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is overall structure diagram of the invention.
Embodiment
Below with reference to specific embodiment, the present invention is described in detail：
Embodiment 1
The electromagnetic induction holding furnace of the embodiment can be by rectification module, filtration module and inversion module by three-phase main-frequency alternating current
Become 10-20KHZ high frequency or 0.8-3.5HZ low frequency single-phase alternating current, the output of inversion module is terminated with electromagnetic induction guarantor
The electromagnetic induction coil of warm stove, and the automatic switching type shunt capacitor group connected with electromagnetic induction coil；It is additionally provided with control
Unit, control unit is connected to control its capacitor input quantity, so as to obtain with automatic switching type shunt capacitor group control line
Different resonant frequencies, make electromagnetic induction holding furnace that there is high-frequency heating operational mode and low frequency stirring operational mode；
Control unit drives inversion module by driver element and controls inversion module output low frequency or high-frequency alternating current；Control unit number
According to man-machine interaction unit is connected with, control unit is stirred/heated switching instant t, time by man-machine interaction unit
Distribution（t1,t2）, the parameter setting such as strength control (μ) so that control unit determines the input of capacitor according to setup parameter
The information such as quantity, working frequency, PWM duty cycle are to carry out relevant control.
Above-mentioned different parameters or parameter combination is solidified in controller in the form of corresponding operational mode.
Output current and voltage sampling circuit are additionally provided with, and phase-locked loop pll is set, according to PLL output results, by controller
Output frequency is finely adjusted, it is ensured that under various operation conditions, equipment works under resonance condition.
Control unit is also connected to realize temperature detection with the heat detector control line on electromagnetic induction holding furnace.
As shown in figure 1, after switching on power, control unit controls 1 group of electricity in shunt capacitor group according to setup parameter
The electromagnetic switch closure of container, and control inversion module to export 12KHZ high-frequency alternating current, whole equipment is operated in high frequency and add
Hot operational mode；When metallic solution temperature reaches arranges value in stove, low frequency can be started by the way of manually or automatically and stirred
Operational mode is mixed, and settable mixing time and stirring intensity, now, controller go out to need to put into electric capacity according to preset value calculation
The information such as quantity, working frequency, the PWM duty cycle of device, control the electric capacity in shunt capacitor group to throw by special circuit first
Enter quantity, then according to the ascending order of dutycycle, inversion module output 3HZ low-frequency ac is driven by driver element
Electricity, makes whole equipment be operated in low frequency stirring operational mode, meanwhile, according to collection load current Hall and voltage hall signal,
According to phaselocked loop（PLL）Algorithm calculates phase difference now, so as to adjust the frequency of output pulse signal in real time, makes circuit work
Make in resonant condition.When setting mixing time is arrived or temperature drop is to setting value, controller passes through dutycycle is descending
Order slow machine halt, prevent shut-off overvoltage caused by jerk, stop after stirring, first do the electric capacity of bypass at electric discharge
Reason is then normal to start induction heating function.
Claims (4)
1. a kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace, the electromagnetic induction holding furnace passes through rectification module, filtering
Industrial-frequency alternating current is become high-frequency alternating current, the output termination electromagnetic induction holding furnace of the inversion module by module and inversion module
Electromagnetic induction coil, to realize the heating and thermal insulation to metallic solution in stove by way of electromagnetic induction, it is characterised in that：Institute
The output for stating inversion module is further connected with the automatic switching type shunt capacitor group connected with electromagnetic induction coil；It is additionally provided with control single
Member, described control unit is connected to control its capacitor input quantity with automatic switching type shunt capacitor group control line, so that
To different resonant frequencies, make electromagnetic induction holding furnace that there is high-frequency heating operational mode and low frequency stirring operation mould
Formula；Described control unit drives inversion module by driver element and controls inversion module output low frequency or high-frequency alternating current；Institute
Stating control unit data cube computation has man-machine interaction unit, to carry out parameter setting, institute to control unit by man-machine interaction unit
The parameter stated at least includes stirring/heating switching instant t, time distribution（t1,t2）, one kind in stirring intensity (μ) or appoint
Meaning combination, so that control unit is realized carries out relevant control according to setup parameter.
2. the longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace according to claim 1, it is characterised in that：Described is different
Parameter or parameter combination are solidified in controller in the form of corresponding operational mode.
3. the longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace according to claim 1, it is characterised in that：It is additionally provided with output electricity
Stream and voltage sampling circuit, and phase-locked loop pll is set, according to PLL output results, output frequency is finely adjusted by controller,
Ensure under various operation conditions, equipment works under resonance condition.
4. the longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace according to claim 1, it is characterised in that：Described control unit
Also it is connected with the heat detector control line on electromagnetic induction holding furnace to realize temperature detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468899.3A CN107166981A (en) | 2017-06-20 | 2017-06-20 | A kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468899.3A CN107166981A (en) | 2017-06-20 | 2017-06-20 | A kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107166981A true CN107166981A (en) | 2017-09-15 |
Family
ID=59819848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710468899.3A Pending CN107166981A (en) | 2017-06-20 | 2017-06-20 | A kind of longitudinal electromagnetic mixing apparatus of electromagnetic induction holding furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107166981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218200A (en) * | 2021-03-23 | 2021-08-06 | 山东交通学院 | Single-coil electromagnetic heating longitudinal electromagnetic stirring device and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300176A (en) * | 1999-12-14 | 2001-06-20 | 中国科学院金属研究所 | Variable frequency induction heater |
| CN101032740A (en) * | 2006-03-07 | 2007-09-12 | 南开大学 | Casting unburnt earthenware lengthways electromagnetic mixing device |
| CN202024601U (en) * | 2010-12-10 | 2011-11-02 | 龙吉林 | High-frequency electromagnetic induction heating device for industrial metal furnace |
| CN203482101U (en) * | 2013-08-23 | 2014-03-12 | 西安重义电子成套设备制造厂 | Power supply for vacuum double-frequency induction heating device |
| CN207351236U (en) * | 2017-06-20 | 2018-05-11 | 山东滨州渤海活塞股份有限公司 | A kind of electromagnetic induction holding furnace longitudinal direction electromagnetic mixing apparatus |
-
2017
- 2017-06-20 CN CN201710468899.3A patent/CN107166981A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300176A (en) * | 1999-12-14 | 2001-06-20 | 中国科学院金属研究所 | Variable frequency induction heater |
| CN101032740A (en) * | 2006-03-07 | 2007-09-12 | 南开大学 | Casting unburnt earthenware lengthways electromagnetic mixing device |
| CN202024601U (en) * | 2010-12-10 | 2011-11-02 | 龙吉林 | High-frequency electromagnetic induction heating device for industrial metal furnace |
| CN203482101U (en) * | 2013-08-23 | 2014-03-12 | 西安重义电子成套设备制造厂 | Power supply for vacuum double-frequency induction heating device |
| CN207351236U (en) * | 2017-06-20 | 2018-05-11 | 山东滨州渤海活塞股份有限公司 | A kind of electromagnetic induction holding furnace longitudinal direction electromagnetic mixing apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218200A (en) * | 2021-03-23 | 2021-08-06 | 山东交通学院 | Single-coil electromagnetic heating longitudinal electromagnetic stirring device and use method thereof |
| CN113218200B (en) * | 2021-03-23 | 2022-06-21 | 山东交通学院 | Single-coil electromagnetic heating longitudinal electromagnetic stirring device and use method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170915 |