CN105698525B - Induction heater with point half formula plate induction coil - Google Patents
Induction heater with point half formula plate induction coil Download PDFInfo
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- CN105698525B CN105698525B CN201410694215.8A CN201410694215A CN105698525B CN 105698525 B CN105698525 B CN 105698525B CN 201410694215 A CN201410694215 A CN 201410694215A CN 105698525 B CN105698525 B CN 105698525B
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Abstract
The present invention relates to a kind of online induction heating techniques of steel plate.A kind of induction heater with point half formula plate induction coil, including upper group of plate induction coil (2) and the following group plate induction coil (6), the following group plate induction coil is fixedly installed on induction furnace cradle, upper group of plate induction coil is installed on and can move up and down on frame, upper group of plate induction coil and the following group plate induction coil partner plate induction coil, are heated plate (1) and pass through between upper and lower two groups of plate induction coils；Plate induction coil includes copper pipe (3) and magnetic yoke (4), magnetic yoke is E shape, two active sections of multi-loop copper tube coil are respectively placed in flat raft in two inside grooves of magnetic yoke E shape and place, the copper pipe being placed in magnetic yoke E shape slot front is preceding copper pipe, the copper pipe for being placed in magnetic yoke E shape slot rear portion is rear copper pipe, and it is opposite with the current direction for flowing through rear copper pipe to flow through preceding copper pipe.In production process when encountering the serious steel plate of warpage, upper group of plate induction coil can be lifted rapidly.
Description
Technical field
The present invention relates to a kind of online induction heating techniques of steel plate, more particularly to the sense with point half formula plate induction coil
Heating furnace is answered, the thermomechanical control technology suitable for medium plate.
Background technique
With the development of science and technology the range of material application is constantly expanded, requirement of the people to material property is further harsh, heat
Mechanical course technique (TMCP) is to the performance of material with great influence, it can be achieved that the production of property steel plate, such as weldability
Can excellent high-strength steel, Steels for High Rise Buildings and large ship steel etc., can significant increase slab quality level, to slab
Performance influences especially pronounced.One important feature of TMCP technology of new generation is that the burning optimization on line process after rolling is not limited only to
Cooling or heat preservation, also will do it the heating of certain condition in some cases.The burning optimization on line device of cut deal is using efficiently
Induction heating apparatus carries out prompt tempering, can distribution to carbide and size control, keep its highly uniform, tiny
It is scattered on matrix, to realize the high intensity and high tenacity of quenched and tempered steel.
For the quick online tempering demand for meeting cut deal, need that induction heater is installed on roller-way after rolling.Due to coming
The strip thickness of material is different, usually maximum amount of warpage often > 30mm, and realize induction heating and must assure that induction coil and strip
Between keep effective distance of reaction, therefore it is required that induction furnace physical efficiency according to different plate thickness make height adjust.If using normal
The solenoid type longitudinal magnetic field induction heating of rule is very easy to steel occur in actual use although design structure is simple
The problems such as plate and coil bump against, can not move in the stuck online circle of steel plate, and line can not be adjusted flexibly according to steel plate thickness specification
Enclose the gap of inner cavity.
By Literature Consult and patent retrieval, United States Patent (USP) US5495094 discloses a kind of induction heater, the induction furnace
It is formed by being cross-linked coiling between single copper sheet coil, coil inside space length can not adjust, therefore cannot achieve mostly thick
The steel plate of metric lattice heats, and can not also cope with camber of sheet phenomenon.The single copper sheet coil of the especially patent disclosure is only suitable for
Using high-frequency induction heating sheet metal, thickness is usually in 5mm or less.United States Patent (USP) US6498328B2 and US5739506 are all made of
Transverse magnetic field induction heating, i.e. magnetic direction are vertical with the wide face direction of steel plate is heated.Using transverse magnetic field to monolithic steel plate into
When row heating, although coil-span can also be adjusted according to steel plate thickness and production emergency situations, there is the heating incipient stage,
Electric current is the problem of steel plate front end is assembled and causes temperature burning at this.According in steel plate front end splicing steel plate or from steel plate
Portion the methods of is begun to warm up, although the problem of can solve end burning, in practical large-scale production process, these methods are not
With operability.
Summary of the invention
The purpose of the present invention is to provide a kind of induction heater with point half formula plate induction coil, the induction heatings
The induction coil of furnace is upper group of plate induction coil and the following group plate induction coil, and the plate being heated is from upper and lower two groups of plate senses
It answers and passes through between coil；In production process when encountering the serious steel plate of warpage, upper group of induction coil can be lifted rapidly, be allowed
The steel plate is not by affecting the normal production.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme:
A kind of induction heater with point half formula plate induction coil, including upper group of plate induction coil and the following group plate
Induction coil, the following group plate induction coil are fixedly installed on induction furnace cradle, and upper group of plate induction coil is installed on can be up and down
In mobile framework, upper group of plate induction coil corresponds to the following group plate induction coil, upper group of plate induction coil and the following group plate
Induction coil partners plate induction coil, is heated plate and passes through between upper and lower two groups of plate induction coils；It is described flat
Plate induction coil is formed by multi-loop copper tube coiling.
Current direction that the upper group of plate induction coil and the following group plate induction coil flow through on the contrary, size, phase and
Frequency is identical.
The plate induction coil includes copper pipe and magnetic yoke, and magnetic yoke is E shape, and two active sections of multi-loop copper tube coil are distinguished
It is placed in flat raft in two inside grooves of magnetic yoke E shape to place, the copper pipe being placed in magnetic yoke E shape slot front is preceding copper pipe, is placed in magnetic yoke E shape slot
The copper pipe at rear portion is rear copper pipe, and it is opposite with the rear current direction of copper pipe is flowed through to flow through the preceding copper pipe；Be heated plate from
Preceding copper pipe passes through in copper pipe direction backward.
The front and back copper pipe of the upper group of plate induction coil is located in approximately the same plane, the following group plate induction coil
Front and back copper pipe is located in approximately the same plane.
The copper pipe lower surface of the upper group of plate induction coil and the copper pipe upper surface of the following group plate induction coil away from
Meet from L: 50mm < L < 150mm.
Spacing d meets between the plate induction coil ipsilateral preceding copper pipe and rear copper pipe: 100mm < d < 400mm.
The flat raft arranging density of the rear copper pipe of two groups of plate induction coils up and down is arranged no more than the flat raft of preceding copper pipe
Density.
The plate induction coil has multipair, and multipair plate induction coil interval rollgang is arranged side by side, and adjacent two
Two magnetic directions are identical adjacent to one another in the longitudinal magnetic field formed to plate induction coil.
The present invention has the induction heater of point half formula plate induction coil for being heat-treated after steel plate rolling, of the invention
The induction coil of induction heater is upper group of plate induction coil and the following group plate induction coil, is heated plate from upper and lower two groups
Pass through between plate induction coil.In production process, steel plate is moved along roller way system conveying, into induction heater of the invention
Plate induction coil is powered and quickly heats afterwards, and after certain soaking time, steel plate is moved to induction coil exit and reaches
To the target temperature of technique initialization, and meet Temperature Distribution requirement on section.When encountering the serious steel plate of warpage, upper group of plate
Induction coil can use mechanical shifting mechanism and lift rapidly, allow the steel plate by not affecting the normal production, then upper group
Plate induction coil returns origin-location, carries out the heating of next block of steel plate.
Compared with prior art, the present invention the beneficial effect is that:
(1) plate induction coil is organized on to be adjusted according to camber of sheet degree real-time perfoming, and the product adaptation of equipment is improved
Ability is conducive to the stabilization of rhythm of production.
(2) since steel plate and upper and lower two groups of plates induction coil spacing are relative constant, more stable, heating efficiency phase is heated
To higher, steel plate thermal treatment quality is preferable, is conducive to improve product quality.
Induction heater of the invention is heat-treated after being used for steel plate rolling, and device structure is simple, and technological operation is easily realized
Automation, heating effect is preferable, is conducive to improve product quality, can simplify production line operation process, improve production efficiency, saves
Production cost, with good application prospect.
Detailed description of the invention
Fig. 1 is the induction heater structural schematic diagram that the present invention has point half formula plate induction coil；
Fig. 2 is 1 schematic diagram of the embodiment of the present invention；
Fig. 3 is induction furnace heating process heating curve figure；
Fig. 4 is 2 schematic diagram of the embodiment of the present invention；
Fig. 5 is the magnetic field schematic diagram that upper and lower two groups of plate induction coils generate；
Fig. 6 is the magnetic field schematic diagram that two groups of plate induction coils up and down of embodiment 1 generate.
In figure: 1 is heated plate (steel plate)；Plate coil, 3 copper pipes, 4 magnetic yokes, 5 rollgangs, 6 the following group plates are organized on 2
Coil；Copper pipe before being organized on 21, copper pipe after group on 22, copper pipe before 61 the following groups, copper pipe after 62 the following groups.Arrow shown in Fig. 1 is plate
Moving direction；In Fig. 6: X flows into for electric current, flows out for electric current.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Referring to Fig. 1, a kind of induction heater with point half formula plate induction coil, including upper group of plate induction coil 2
With the following group plate induction coil 6, the following group plate induction coil 6 is fixedly installed in induction furnace cradle (not shown in figure 1), and upper group
Plate induction coil 2, which is installed on, can move up and down in frame (not shown in figure 1), and upper group of plate induction coil 2 corresponds to the following group
Plate induction coil 6, upper group of plate induction coil 2 and the following group plate induction coil partner plate induction coil, are heated
Plate 1 passes through between upper and lower two groups of plate induction coils 2,6；The plate induction coil is formed by 3 coiling of multi-loop copper tube.Institute
The current direction that group plate induction coil 2 is flowed through with the following group plate induction coil 6 is stated on the contrary, size, phase and frequency are identical.
The plate induction coil 2,6 includes copper pipe 3 and magnetic yoke 4, and magnetic yoke 4 is E shape, two works of 3 coil of multi-loop copper tube
Flat raft is placed in two inside grooves that section is respectively placed in magnetic yoke E shape, be placed in copper pipe 3 in magnetic yoke E shape slot front be preceding copper pipe 21,
61, the copper pipe 3 for being placed in magnetic yoke E shape slot rear portion is rear copper pipe 22,62, flows through the preceding copper pipe and flows through the electric current of the rear copper pipe
It is contrary；From preceding copper pipe 21,61, copper pipe 22,62 directions pass through the plate 1 being heated backward.
The front and back copper pipe 21,22 of the upper group of plate induction coil 2 is located in approximately the same plane, the following group plate induction
The front and back copper pipe 61,62 of coil 6 is located in approximately the same plane.The copper pipe 21 of the upper group of plate induction coil 2,22 lower surfaces with
The copper pipe 61 of the following group plate induction coil 6,62 upper surface distance L meet: 50mm < L < 150mm.
Spacing d meets between the plate induction coil ipsilateral preceding copper pipe and rear copper pipe: 100mm < d < 400mm.Work as institute
It, will between two longitudinal magnetic fields that the ipsilateral preceding copper pipe of plate induction coil and rear copper pipe generate when stating spacing d less than 100mm
It cancels out each other, reduces heating efficiency；When the spacing d is greater than 400mm, it will cause parts between two longitudinal magnetic fields
Temperature drop is excessive, extends whole heating time, is unsuitable for reaching the requirement of heating rate.
The flat raft arranging density of the rear copper pipe 22,62 of two groups of plate induction coils up and down is not more than preceding copper pipe 21,61
Flat raft arranging density, referring to fig. 2.Relative to the bringing-up section solid matter arrangement of copper pipe 21,61 before induction coil, copper after induction coil
The sparse arrangement of the corresponding copper pipe of soaking zone of pipe 22,62, by plumbers shed away from optimization design, steel plate movement speed cooperation,
And the setting of induction coil heating power parameter, the temperature of the entire heating process of induction heater can be controlled and be wanted in technique
It asks in range.
The plate induction coil 2,6 has multipair, and referring to fig. 4, multipair plate induction coil interval rollgang 5 is arranged side by side
Column, and two magnetic directions are identical adjacent to one another in the longitudinal magnetic field of adjacent two pairs of plate induction coils formation.According to production
The needs of rhythm, of the invention 2,6 pairs of plate induction coil can combine and use side by side, and induction coil logarithm is according to rhythm of production
Needs selection and it is unrestricted.
The present invention, which has, is divided to the induction heater of half formula plate induction coil using upper and lower two groups of plate induction coils to steel
When plate is heated, steel plate thickness is heated between 6mm~50mm.When it is described be heated steel plate thickness and be more than 50mm when,
The spacing for then needing two groups of plate induction coils above and below expanding, causes heating efficiency to reduce, and improves production cost.It is heated when described
When steel plate thickness is less than 6mm, it is similarly guarantee heating efficiency, the power supply frequency of two groups of plate induction coils up and down need to be improved
Rate, and the design frequency range of single power supply is unable to satisfy excessively high frequency requirement.
Induction heater of the invention is heated the control of steel plate movement speed absolute value in 0.01m/s~1m/s model to described
Within enclosing.In actual production process, when movement speed is greater than 1m/s, to reach target temperature, the source nominal power that needs
It is excessive, beyond the range that general manufacturing enterprise can bear, because without operability.When speed is lower than 0.01m/s, then
Rhythm of production is again too low, is unable to reach capacity requirements.
The portion of steel plate width is heated described in two groups of coverings of plate induction coil 2,6 up and down of induction heater of the invention
Split-phase is arranged symmetrically plate centre line, and the current direction being located on symmetric position or more copper pipe is always on the contrary, size, phase
Position is identical with frequency.
Two are formed within the scope of the three-dimensional space that two groups of plate induction coils 2,6 are heated steel plate described in the covering described up and down
A longitudinal magnetic field, central magnetic field direction is parallel with steel plate moving direction, and described two longitudinal magnetic field directions are opposite always.Referring to
Fig. 5, by taking a certain moment as an example, if two groups of plate coils form a magnetic field B2 to the right up and down on the left of induction coil, right side
Upper and lower two groups of plate coils form a magnetic field B1 to the left, and magnetic field B1 and the magnetic field direction B2 are opposite always.
Induction heater with point half formula plate induction coil
The present invention has the induction heater of point half formula plate induction coil for being heat-treated after steel plate rolling.Production process
In, steel plate along roller way system conveying move, into induction heater after plate induction coil be powered quickly heating, by certain
After soaking time, steel plate is moved to induction coil exit and reaches the target temperature of technique initialization, and meets temperature on section
Spreading requirements.When encountering the serious steel plate of warpage, upper group of plate induction coil can use mechanical shifting mechanism and lift rapidly,
Make the steel plate normal through then upper group plate induction coil returns origin-location, carries out the heating of next block of steel plate.
Embodiment 1
There is the present invention induction heater of point half formula plate induction coil to add mainly for induction is carried out after steel plate rolling
Heat heat treatment requires to be the more of 400mm*40mm*3000mm to specification in the present embodiment to improve tissue, improve mechanical property
Block steel plate is heated, and material is pipe line steel.It is required that steel plate is heated to 700 degree from room temperature, steel plate is located at sense after heating
The Temperature Distribution on the section of coil exit is answered to control within +/- 10 degree, and temperature is no more than 710 degree in heating process.
To realize above-mentioned target, the present invention provides a kind of induction heaters with point half formula plate induction coil, such as
Shown in Fig. 2, wherein two groups of coverings of plate induction coil 2,6 are heated in the range of steel plate up and down, copper pipe 3 is located at a horizontal plane
On.Electrical current direction is always on the contrary, size, frequency and phase on upper and lower two groups of plate induction coils 2,6 symmetric position copper pipes 3
It is identical.Electrical current on the copper pipe 3 ipsilateral for upper group of plate induction coil 2 or the ipsilateral copper pipe 3 of the following group plate induction coil 6
Direction certainly exists positive and negative two kinds of directions, offsets, will have same to reduce the magnetic field strength formed between inverse current as far as possible
The copper pipe of directional current concentrates arrangement, i.e., divides copper pipe 3 for preceding copper pipe and rear copper pipe；In this way, in upper group of plate induction coil 2
Ipsilateral preceding copper pipe 21 and rear copper pipe 22 will respectively generate both direction opposing longitudinal magnetic field, and the direction in two magnetic field with
Steel plate moving direction is parallel；Two will be generated respectively in the ipsilateral preceding copper pipe 61 and rear copper pipe 62 of the following group plate induction coil 6
Contrary longitudinal magnetic field, and the direction in two magnetic field is parallel with steel plate moving direction.Corresponding to upper and lower two groups of plate senses
Coil 2,6 is answered, four magnetic fields will be generated on steel plate 1, induction heating, i.e., the preceding copper of upper group plate induction coil 2 is carried out to steel plate
One group of the composition corresponding with the preceding copper pipe 61 of the following group plate induction coil 6 of pipe 21, and current direction is on the contrary, upper and lower two groups of lines of induction
The preceding copper pipe 21,61 of circle forms the identical longitudinal magnetic field of both direction, and the direction in two magnetic field is flat with steel plate moving direction
Row；The rear copper pipe 22 of upper group of plate induction coil 2 one group of composition corresponding with the rear copper pipe 62 of the following group plate induction coil 6, and
Current direction is on the contrary, the rear copper pipe 22,62 of upper and lower two groups of induction coils forms the identical longitudinal magnetic field of both direction, and two magnetic
The direction of field is parallel with steel plate moving direction；The preceding copper pipe of ipsilateral plate induction coil and rear copper pipe current direction are on the contrary, preceding
Copper pipe and rear copper pipe form both direction opposing longitudinal magnetic field, and the direction in two magnetic field is parallel with steel plate moving direction.
The preceding copper pipe 21 of upper group of plate induction coil 2 is synthesized with two magnetic fields that the preceding copper pipe 61 of the following group plate induction coil 6 generates
One longitudinal magnetic field is a longitudinal magnetic field B1 from right to left, referring to Fig. 6, by the rear copper pipe 22 of upper group of plate induction coil 2
Two magnetic fields generated with the rear copper pipe 62 of the following group plate induction coil 6 synthesizes one longitudinal magnetic field, from left to right for one
Longitudinal magnetic field B2；Longitudinal magnetic field B1 is with the direction longitudinal magnetic field B2 always on the contrary, two magnetic directions are parallel with steel plate moving direction.
To improve heating efficiency as far as possible, two groups of plate induction coils 2, about 6 copper pipe surface distances above and below setting: L=
100mm；Spacing between the preceding copper pipe and rear copper pipe of ipsilateral induction coil: d=150mm.Steel plate is heated from upper and lower two groups of plate senses
The space formed between coil 2,6 is answered to pass through, in the present embodiment, steel plate movement speed in induction coil 2,6 is controlled in
0.015m/s。
Since the heat transfer of 1 thickness direction of steel plate needs the regular hour, when skin temperature reaches target temperature, central temperature
And not up to target value, i.e., there is certain temperature difference between surface layer and center always, needs certain heat conduction time to reduce
This temperature difference.For this purpose, after skin temperature reaches target temperature, it is necessary to give certain soaking time so as to central temperature continuation
Raising reaches target temperature, i.e., entire heating process must be comprising being rapidly heated and keeping the temperature two stages.As shown in figure 3, heating
Steel plate surface layer is heated to close to 700 degree first in the process, subsequent steel plate continues to move to enter a soaking zone, and guarantees surface layer
Temperature maintains between 690~710 always.In entire heating process, central temperature is gradually risen, the temperature difference between surface layer by
It is tapered small, it is finally reached within defined the temperature difference range.In order to reduce heating time, the heating speed of steel plate central part is improved
Degree, it is necessary to skin temperature is as much as possible improved, because central part temperature is completed mainly by heat transfer.Make holding stage steel plate
Skin temperature maintains on a high level that there are certain difficulty, to realize this function, it is necessary to for Heat preservation
Spacing between coil copper pipe (rear copper pipe) optimizes.As shown in Fig. 2, compared to the bringing-up section of preceding copper pipe 21,61
Solid matter arrangement, rear copper pipe 22, the sparse arrangement of the corresponding copper pipe of 62 soaking zones.By plumbers shed away from optimization design, steel plate it is mobile
The setting of power curve is given in the cooperation of speed and induction coil, the temperature of entire heating process can be controlled 700
Near degree, and heating process maximum temperature is no more than 710 degree.
When encountering steel plate there are when serious warping phenomenon in heating process, then upper group of plate induction coil 2 can be lifted
Rise and without heat treatment, allow steel plate by original speed normal through.Then upper group plate induction coil 2 is returned to original position
It sets, to go on smoothly the heat treatment of next block of steel plate.
Embodiment 2
It requires to heat the plurality of steel plates that specification is 2200mm*20mm*25000mm in the present embodiment, material is mould
Has steel.It is required that steel plate is heated to 600 degree from 200 degree, steel plate is located at the temperature on the section of induction coil exit after heating
Distributed controll is spent within +/- 10 degree, and temperature is no more than 610 degree in heating process.
To realize above-mentioned target, the present invention provides a kind of induction heater with point half formula plate induction coil,
The copper pipe surface distance of upper and lower plate induction coil 2,6: L=80mm；In ipsilateral induction coil the opposite preceding copper pipe of current direction and
Spacing between copper pipe afterwards: d=200mm.Since steel plate thickness direction heat transfer needs the regular hour, when skin temperature reaches target
When temperature, there is certain temperature difference between central temperature and not up to target value, i.e. surface layer and center always, needs certain heat
Conduction time is to reduce this temperature difference.For this purpose, after skin temperature reaches target temperature, it is necessary to give certain soaking time with
Just central temperature, which continues to increase, reaches target temperature, i.e., entire heating process must be comprising being rapidly heated and keeping the temperature two stages.
In the present embodiment 2, steel plate movement speed in induction coil is controlled in 0.3m/s.First will in heating process
Steel plate surface layer is heated to close to 600 degree, and subsequent steel plate continues to move to enter a soaking zone, and guarantees that skin temperature maintains always
Between 590~610.In entire heating process, central temperature is gradually risen, and the temperature difference between surface layer is gradually reduced, finally
Within the temperature difference range as defined in reaching.In order to reduce heating time, the heating rate of steel plate central part is improved, it is necessary to maximum to the greatest extent
Skin temperature may be improved, because central part temperature is completed mainly by heat transfer.Maintain holding stage steel plate skin temperature
There are certain difficulty on a high level, and to realize this function, the present embodiment 2 uses multipair plate induction coil side by side
Arrangement.As shown in figure 4, using about 4 pairs plate induction coils 2,6 altogether, rollgang 5 is arranged between each pair of induction coil 2,6.
In the constant situation of steel plate movement speed, by the different capacity curve on each pair of induction coil of setting, it can incite somebody to action entire heated
The temperature of journey controls near 600 degree, and heating process maximum temperature is no more than 610 degree.
When encountering steel plate there are when serious warping phenomenon in heating process, then upper group of plate induction coil 2 can be lifted
Rise and without heat treatment, allow steel plate by original speed normal through.Then upper group plate induction coil 2 is returned to original position
It sets, to go on smoothly the heat treatment of next block of steel plate.
The above is merely preferred embodiments of the present invention, it is not intended to limit the protection scope of invention, it is therefore, all at this
Any modification, equivalent replacement, improvement and so within the spirit and principle of invention, should be included in protection scope of the present invention
Within.
Claims (7)
1. a kind of induction heater with point half formula plate induction coil, it is characterized in that: including upper group of plate induction coil (2)
With the following group plate induction coil (6), the following group plate induction coil (6) is fixedly installed on induction furnace cradle, upper group of plate induction
Coil (2) is installed on and can move up and down on frame, and upper group of plate induction coil (2) corresponds to the following group plate induction coil (6), on
Group plate induction coil (2) and the following group plate induction coil (6) partner plate induction coil, are heated plate (1) from upper
Pass through between lower two groups of plate induction coils (2,6)；The plate induction coil is formed by multi-loop copper tube (3) coiling；
The current direction that the upper group of plate induction coil (2) and the following group plate induction coil (6) flow through is on the contrary, size, phase
It is identical with frequency；
Formation in the three-dimensional space that two groups of plate induction coils (2,6) are heated plate (1) described in the covering described up and down
Two longitudinal magnetic fields, central magnetic field direction are parallel with steel plate moving direction.
2. the induction heater with point half formula plate induction coil according to claim 1, it is characterized in that: the plate
Induction coil includes copper pipe (3) and magnetic yoke (4), and magnetic yoke (4) is E shape, and two active sections of multi-loop copper tube (3) coil are respectively placed in
Flat raft is placed in two inside grooves of magnetic yoke E shape, and the copper pipe (3) being placed in magnetic yoke E shape slot front is preceding copper pipe, is placed in magnetic yoke E shape slot
The copper pipe (3) at rear portion is rear copper pipe, and it is opposite with the rear current direction of copper pipe is flowed through to flow through the preceding copper pipe；It is heated plate
(1) pass through in copper pipe direction backward from preceding copper pipe.
3. the induction heater with point half formula plate induction coil according to claim 2, it is characterized in that: described upper group
The front and back copper pipe of plate induction coil (2) is located in approximately the same plane, the front and back copper pipe position of the following group plate induction coil (6)
In in approximately the same plane.
4. the induction heater with point half formula plate induction coil according to claim 3, it is characterized in that: described upper group
The copper pipe upper surface distance L of the copper pipe lower surface of plate induction coil (2) and the following group plate induction coil (6) meets:
50mm<L<150mm。
5. the induction heater with point half formula plate induction coil according to claim 3, it is characterized in that: the plate
Spacing d meets between induction coil ipsilateral preceding copper pipe and rear copper pipe: 100mm < d < 400mm.
6. the induction heater with point half formula plate induction coil according to claim 2, it is characterized in that: above and below described
The flat raft arranging density of the rear copper pipe of two groups of plate induction coils (2,6) is not more than the flat raft arranging density of preceding copper pipe.
7. the induction heater with point half formula plate induction coil according to claim 1, it is characterized in that: the plate
Induction coil (2,6) has multipair, and multipair plate induction coil interval rollgang (5) is arranged side by side, and adjacent two pairs of plate senses
Two magnetic directions are identical adjacent to one another in the longitudinal magnetic field for answering coil to be formed.
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| CN106793217B (en) * | 2016-12-15 | 2022-12-09 | 佛山市宏科瑞纳米热能科技有限公司 | Non-interference segmented and non-blind area heating device and control method thereof |
| CN111083820B (en) * | 2020-01-22 | 2021-08-27 | 齐齐哈尔大学 | Open-close type induction heater |
| CN113141687B (en) * | 2021-03-29 | 2022-10-28 | 首钢京唐钢铁联合有限责任公司 | Slab induction heating device and system |
| CN113664057A (en) * | 2021-08-27 | 2021-11-19 | 江阴中意电气有限公司 | Magnesium alloy plate induction heater |
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| JPH04147596A (en) * | 1990-10-09 | 1992-05-21 | Kitashiba Denki Kk | Induction heating of metallic thin plate |
| CN102106185A (en) * | 2008-07-25 | 2011-06-22 | 应达公司 | Electric induction edge heating of electrically conductive slabs |
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