CN104185326B - Electric induction heater for heating metal parts - Google Patents
Electric induction heater for heating metal parts Download PDFInfo
- Publication number
- CN104185326B CN104185326B CN201410432258.9A CN201410432258A CN104185326B CN 104185326 B CN104185326 B CN 104185326B CN 201410432258 A CN201410432258 A CN 201410432258A CN 104185326 B CN104185326 B CN 104185326B
- Authority
- CN
- China
- Prior art keywords
- module assembly
- metalwork
- coil
- heating
- support arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 230000006698 induction Effects 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 title abstract description 11
- 239000002184 metal Substances 0.000 title abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000005291 magnetic effect Effects 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 230000005294 ferromagnetic effect Effects 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 241000784732 Lycaena phlaeas Species 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000007698 birth defect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- General Induction Heating (AREA)
Abstract
The invention discloses an electric induction heater for heating metal parts, wherein a cylindrical module assembly comprises a plurality of coil winding modules arranged around the central axis of the module assembly, each coil winding module comprises an iron core and a coil wound on the iron core along the length direction of the iron core, the metal parts penetrate through cylinder cavities of the module assembly along the central axis of the module assembly, a power supply device outputs variable-frequency alternating current to the coil winding modules, and the coil windings generate an alternating magnetic field and act on the metal parts to generate eddy current for heating. The coil of the invention has more turns and small air gap, and can realize high-power and high-efficiency heating by using a common copper winding with a smaller sectional area. Because the current density in the coil is greatly reduced, the energy loss in the winding coil during heating is greatly reduced, and a large capacitor bank is not required to be equipped. The heating efficiency of the heater can reach 80 percent, which is far higher than the highest efficiency of the electric induction heater with circumferential winding in the world at present by 65 percent.
Description
Technical field
The present invention relates to METAL HEATING PROCESS field, particularly to a kind of electric induction heater heating metalwork.
Background technology
In METAL HEATING PROCESS field, there is following several conventional heating techniques:
1, gas heating, utilizes the heat metal that burning natural gas or coal gas produce.Under this heating technique, the heating-up temperature of metal is difficult to accurate control, and not easily realizes heating larger-diameter metal billet, such as the ingot of φ more than 12.
2, resistance furnace heating, resistance furnace, with electricity for thermal source, converts electrical energy into heat energy by heating, relies on heat radiation or thermal current convection type in stove, metal to be heated.In this heating technique, substantial amounts of energy is consumed on heating such as resistance wire, and the efficiency of heating surface is relatively low.
3, electrical induction, tradition induction heater utilizes copper induction coil to surround aluminium bar, when alternating current is applied on induction coil, produces alternating magnetic field in the space that coil surrounds.Alternating magnetic field is pulsed under basic frequency, goes out vortex flow in aluminium bar induced inside, and therefore aluminium bar is also heated.But, owing to induction coil has the resistance can not ignore, when by heavy current, appreciable heat is lost on coil.And, these heats produced on coil must use substantial amounts of cooling water that coil is cooled down.Such birth defect makes the energy utilization rate of tradition induction heater at a fairly low, and only 40% to 60%.
Thus, it is necessary to traditional mode of heating is changed from new visual angle, to solve current technology Problems existing.
Summary of the invention
It is an object of the invention to provide a kind of electric induction heater heating metalwork, to solve some problems that current technology exists.
The present invention provides a kind of electric induction heater heating metalwork, including a board, also includes:
It is located at the cylindric module assembly on described board, it farther includes the coil windings module that some central axis around described module assembly are arranged, described coil windings module includes an iron core and is wrapped in the coil on described iron core along described core length direction, the centerline axis parallel of the length direction of described iron core and described module assembly, described metalwork passes its barrel chamber along the central axis of described module assembly；
Electric supply installation, connects described module assembly, and in order to described some coil windings modules to export frequency-changing AC electricity, described coil windings produces alternating magnetic field and acts on described metalwork so as to produce vortex flow and be heated；
Being located at the heating positioner on described board, described heating positioner is positioned at the metalwork of described module assembly into the barrel chamber, makes the cylinder inwall maintenance predetermined gap of described metalwork and described module assembly.
As an embodiment, described some coil windings modules are uniformly arranged around the central axis of described module assembly, the central axis of module assembly described in the magnetic fields point that each described coil windings module produces.
As an embodiment, the first Hydraulic Station that described heating positioner includes being distributed in the axial two ends of described module assembly and the second support arm that the first support arm that the second Hydraulic Station is connected with described first Hydraulic Station piston rod is connected with described second Hydraulic Station piston rod, the bare terminal end of described first support arm and the bare terminal end of the second support arm withstand the both ends of the surface of the described metalwork being positioned at described module assembly barrel chamber respectively inwards at the axial two ends of described module assembly.
As an embodiment, described first support arm bare terminal end and the second support arm bare terminal end are rotation bare terminal end, and they clamp described metalwork and rotate in the into the barrel chamber of described module assembly.
As an embodiment, described first support arm and the second support arm are respectively under the effect of described first Hydraulic Station hydraulic cylinder and the second Hydraulic Station hydraulic cylinder, simultaneously in the same direction along the axial back and forth movement of described module assembly, thus driving the described metalwork withstood axially to do back and forth movement in the barrel chamber of described module assembly.
As an embodiment, described metalwork is non-ferromagnetic metal material, and described metalwork is aluminum or copper or magnesium alloy material.
One of advantage of the present invention, location mode (hydraulic pressure two ends are withstood) to metalwork in the present invention, make the gap between coil and metalwork diminish, improve the efficiency of heating surface.Because traditional inductance answers heater to be difficulty with less gap, traditional inductance answers heater to need the conveying mechanism weight at the lower support metalwork of metalwork of tray form, so in heating process, pallet body is between coil and metalwork, could holding described pallet body after making the gap enlargement between coil and metalwork, additionally the existence of pallet body also counteracts that the transmission of electric induction.In the present invention except loss of energy in coil, main energetic loss is in the process of the variable-frequency variable-voltage of electric power system.Through Theoretical Calculation, the efficiency of heating surface of this heater can reach 80%, far above the peak efficiency 65% of the electric induction heater of current circumference in the world coiling.
The two of advantage of the present invention, medium ring of the present invention is around the coil windings module arranged, the coil turn of winding can be increased, reduce coil diameter, and then reduce the eddy current owing to self-induction of loop produces, electric current density relatively low in keeping coil, reduces the heat that the resistance of coil itself produces when being energized work.Traditional inductance answers heater cannot use little copper coil, because its copper conductor is the rectangle copper pipe for hollow, cooling water flows through from the space of hollow, and such copper conductor diameter is big far beyond the copper coil used by the present invention.
The three of advantage of the present invention, location mode to metalwork in the present invention, make the gap between coil and metalwork diminish, improve heating effect, therefore electric power system capacitance group need not be set carry out compensating power.Answer in heater in traditional inductance, there is very big the air gap ac power supply system between coil and metalwork and can consume more reactive power, so electric power system needs huge and expensive capacitance group to carry out compensating power.
The four of advantage of the present invention, heating positioner can drive metalwork in the into the barrel chamber of cylindric module assembly along axis back and forth movement, so makes metalwork be heated evenly, further increases the efficiency of heating surface.
The five of advantage of the present invention, the present invention to realize the heating to metalwork, relative rotational between metal and magnetic field is most important to firing rate, the efficiency of heating surface, the support arm of the heating positioner in the present invention rotates bare terminal end and metalwork can also be driven to rotate, bigger relative velocity can be realized, metalwork is accelerated by the effect of alternating magnetic field, can produce bigger vortex flow, can produce bigger heating effect inside it.Simultaneously as metalwork and high speed rotating, ambient air accelerate flowing, produce powerful air-cooled effect, be greatly improved heat sinking function.
Accompanying drawing explanation
Fig. 1 is the structural representation of heating system one embodiment of the present invention；
Fig. 2 is the structural representation of another embodiment of heating system of the present invention；
Fig. 3 is tubular module assembly structure chart of the present invention.
Wherein, electric induction heater 100, board 110, module assembly 120, coil windings module 121, iron core 122, coil 123, metalwork 130, heats location-plate 140, the first Hydraulic Station 150, second Hydraulic Station 151, the first support arm 152, the second support arm 153, bare terminal end 154.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with drawings and embodiments.
It is two embodiments of the present invention respectively referring to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2.The present invention provides a kind of electric induction heater 100 heating metalwork 130, including a board 110, cylindric module assembly 120, electric supply installation, heating positioner, specifically:
It is located at the cylindric module assembly 120 on described board 110, referring to Fig. 3, it farther includes the coil windings module 121 that some central axis around described module assembly 120 are arranged, described coil windings module 121 includes an iron core 122 and is wrapped in the coil 123 on described iron core 122 along described iron core 122 length direction, the centerline axis parallel of the length direction of described iron core 122 and described module assembly 120, described metalwork 130 passes its barrel chamber along the central axis of described module assembly 120.As an embodiment, described some coil windings modules 121 are uniformly arranged around the central axis of described module assembly 120, these some coil windings modules 121 surround and form a tubular, the central axis of module assembly 120 described in the magnetic fields point that each described coil windings module 121 produces.
Electric supply installation (not shown in FIG.), connect described module assembly 120, in order to described some coil windings modules 121 to export frequency-changing AC electricity, described coil 123 winding produces alternating magnetic field and acts on described metalwork 130 so as to produce vortex flow and be heated.What adopt here is frequency-changing AC electricity, adopts frequency-changing AC electricity to make heat time heating time, heating quality etc. adjustable, improves heating effect.Constant frequency AC can certainly be adopted, but its heating effect can reduce.
Be located at the heating positioner on described board 110, described heating positioner rise effect is the metalwork 130 being positioned at described module assembly 120 into the barrel chamber, make the cylinder inwall maintenance predetermined gap of described metalwork 130 and described module assembly 120.Heating positioner can be the heating location-plate 140 in Fig. 1, heating location-plate 140 1 aspect can stuck-module assembly 120, one end of metalwork 130 can also be fixed on the other hand.Heating positioner can also be the Hydraulic Station positioner in Fig. 2, metalwork 130 is withstood by the first Hydraulic Station 150 and the second Hydraulic Station 151, module assembly 120 is arranged on the two pieces of installing plates in left and right, and metalwork 130 sequentially passes through left installing plate, the barrel chamber of module assembly 120, right installing plate.And keep gap with them.
Referring to Fig. 2, as an embodiment, the first Hydraulic Station 150 that described heating positioner includes being distributed in the described axial two ends of module assembly 120 and the second support arm 153 that the first support arm 152 that the second Hydraulic Station 151 is connected with described first Hydraulic Station 150 piston rod is connected with described second Hydraulic Station 151 piston rod, the bare terminal end 154 of described first support arm 152 and the bare terminal end 154 of the second support arm 153 withstand the both ends of the surface of the described metalwork 130 being positioned at described module assembly 120 barrel chamber respectively inwards at the axial two ends of described module assembly 120.Being rotation bare terminal end as an embodiment, the bare terminal end 154 of described first support arm 152 and the bare terminal end 154 of the second support arm 153, they clamp described metalwork 130 and rotate in the into the barrel chamber of described module assembly 120.Here rotation bare terminal end implements, it is possible to be the rotating clamp fastener etc. of current industrial circle employing, also rotates while realizing Workpiece clamping.
Referring to Fig. 2, as an embodiment, described first support arm 152 and the second support arm 153 are respectively under the effect of described first Hydraulic Station 150 hydraulic cylinder and the second Hydraulic Station 151 hydraulic cylinder, simultaneously in the same direction along the axial back and forth movement of described module assembly 120, thus driving the described metalwork 130 withstood axially to do back and forth movement in the barrel chamber of described module assembly 120.In the present embodiment, heating positioner employs the mode of hydraulic pressure location, it is clear that may be used without other location modes, such as adopts lead screw transmission mode to substitute Hydraulic Station, it is possible to arrange spring so that metalwork 130 is realized clamping and positioning at described bare terminal end 154.
As an embodiment, described metalwork 130 is nonferromugnetic material, and metalwork 130 can be aluminum or copper or magnesium alloy inner bag.Adopting this material, owing to it belongs to nonferromagnetic, it will not produce when rotating to hinder so that rotates more smooth and easy.
During heater of the present invention work, electric power system provides the alternating current of different frequency under the instruction controlling system for coil.Alternating magnetic field that alternating current produces at coil is also effectively directed on metalwork (ingot) by iron core.At this moment, vortex flow can be induced in ingot to resisting the alternating magnetic field that each coil windings produces.These vortex flows can heat ingot effectively.Simultaneously, the two ends of ingot are clamped by support arm, under the driving of hydraulic pressure, ingot can move along cylinder axis in the into the barrel chamber of module assembly 120, ensure that it is longitudinally heated properly by controlling ingot in the position of the into the barrel chamber thermal treatment zone, or according to certain axial temperature curve, ingot is accurately heated.
Those of ordinary skill in the art will be appreciated that, embodiment above is intended merely to the explanation present invention, and it is not used as limitation of the invention, as long as in the spirit of the present invention, to the change of embodiment of above, modification all by the Claims scope dropping on the present invention.
Claims (7)
1. heat an electric induction heater for metalwork, including a board, it is characterised in that also include:
It is located at the cylindric module assembly on described board, it farther includes the coil windings module that some central axis around described module assembly are arranged, described coil windings module includes an iron core and is wrapped in the coil on described iron core along described core length direction, the centerline axis parallel of the length direction of described iron core and described module assembly, described metalwork passes its barrel chamber along the central axis of described module assembly；
Electric supply installation, connects described module assembly, and in order to described some coil windings modules to export frequency-changing AC electricity, described coil windings module produces alternating magnetic field and acts on described metalwork so as to produce vortex flow and be heated；
Being located at the heating positioner on described board, described heating positioner is positioned at the metalwork of described module assembly into the barrel chamber, makes the cylinder inwall maintenance predetermined gap of described metalwork and described module assembly.
2. heater as claimed in claim 1, it is characterised in that described some coil windings modules are uniformly arranged around the central axis of described module assembly, the central axis of module assembly described in the magnetic fields point that each described coil windings module produces.
3. heater as claimed in claim 1 or 2, it is characterized in that, the first Hydraulic Station that described heating positioner includes being distributed in the axial two ends of described module assembly and the second support arm that the first support arm that the second Hydraulic Station is connected with described first Hydraulic Station piston rod is connected with described second Hydraulic Station piston rod, the bare terminal end of described first support arm and the bare terminal end of the second support arm withstand the both ends of the surface of the described metalwork being positioned at described module assembly barrel chamber respectively inwards at the axial two ends of described module assembly.
4. heater as claimed in claim 3, it is characterised in that described first support arm bare terminal end and the second support arm bare terminal end are rotation bare terminal end, they clamp described metalwork and rotate in the into the barrel chamber of described module assembly.
5. heater as claimed in claim 4, it is characterized in that, described first support arm and the second support arm are respectively under the effect of described first Hydraulic Station hydraulic cylinder and the second Hydraulic Station hydraulic cylinder, simultaneously in the same direction along the axial back and forth movement of described module assembly, thus driving the described metalwork withstood axially to do back and forth movement in the barrel chamber of described module assembly.
6. heater as claimed in claim 5, it is characterised in that described metalwork is non-ferromagnetic metal material.
7. heater as claimed in claim 6, it is characterised in that described metalwork is aluminium material, or copper material, or magnesium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432258.9A CN104185326B (en) | 2014-08-28 | 2014-08-28 | Electric induction heater for heating metal parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432258.9A CN104185326B (en) | 2014-08-28 | 2014-08-28 | Electric induction heater for heating metal parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104185326A CN104185326A (en) | 2014-12-03 |
| CN104185326B true CN104185326B (en) | 2016-07-06 |
Family
ID=51965970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410432258.9A Active CN104185326B (en) | 2014-08-28 | 2014-08-28 | Electric induction heater for heating metal parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104185326B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793229A (en) * | 2016-12-15 | 2017-05-31 | 鹤山市运通新能源科技有限公司 | A kind of high-frequency heating apparatus |
| CN112659539A (en) * | 2020-12-02 | 2021-04-16 | 博硕科技(江西)有限公司 | Data line of supporting PD function is with roast shrink sleeve device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148973A (en) * | 1966-03-15 | 1969-04-16 | Gen Electric | Improvements in synthetic fibre heaters |
| JPH01211891A (en) * | 1988-02-18 | 1989-08-25 | Tokuden Kk | Heating container |
| JP2004021216A (en) * | 2002-06-20 | 2004-01-22 | Tdk Corp | Bar core assembly, and induction heating device and heat fixing device using same |
| CN103347321A (en) * | 2013-06-28 | 2013-10-09 | 苏州科睿特能源科技有限公司 | Cylindrical heating device against solid metal material |
| CN204291433U (en) * | 2014-08-28 | 2015-04-22 | 上海锐漫能源科技有限公司 | The electric induction heater of heating of metal part |
-
2014
- 2014-08-28 CN CN201410432258.9A patent/CN104185326B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148973A (en) * | 1966-03-15 | 1969-04-16 | Gen Electric | Improvements in synthetic fibre heaters |
| JPH01211891A (en) * | 1988-02-18 | 1989-08-25 | Tokuden Kk | Heating container |
| JP2004021216A (en) * | 2002-06-20 | 2004-01-22 | Tdk Corp | Bar core assembly, and induction heating device and heat fixing device using same |
| CN103347321A (en) * | 2013-06-28 | 2013-10-09 | 苏州科睿特能源科技有限公司 | Cylindrical heating device against solid metal material |
| CN204291433U (en) * | 2014-08-28 | 2015-04-22 | 上海锐漫能源科技有限公司 | The electric induction heater of heating of metal part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104185326A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103313449B (en) | Induction heating equipment and induction heating method thereof | |
| CN102069344A (en) | Variable-diameter bearing inner ring induction replacer | |
| CN213815704U (en) | double-C-type variable air gap high-temperature superconducting direct-current induction heating device | |
| CN204291433U (en) | The electric induction heater of heating of metal part | |
| CN104501580A (en) | Electric-heating ultrahigh-temperature internal heating type rotary kiln | |
| CN104185326B (en) | Electric induction heater for heating metal parts | |
| CN102255474A (en) | Combined electromagnetic speed regulation system | |
| CN113825269A (en) | Superconducting induction heating system for production line | |
| CN107138587B (en) | A kind of electromagnetic heating type warm plate electromagnetic forming device and method | |
| CN202758701U (en) | Novel water-cooled electromagnet | |
| CN212812078U (en) | Water-cooling type electromagnetic heating roller | |
| CN212463555U (en) | Water-cooling type electromagnetic heating roller | |
| CN101631402B (en) | Multi-section medium frequency heating method for pipe expanding set and device thereof | |
| WO2014088423A1 (en) | Apparatus and method for induction heating of magnetic materials | |
| CN111212490B (en) | Superconducting induction heating device capable of simultaneously heating multiple workpieces | |
| CN206600920U (en) | Induction bolt heating device | |
| CN203027520U (en) | Induction heating devices for annular metal pieces and cup-shaped metal pieces | |
| CA2516737A1 (en) | Continuous extrusion apparatus | |
| CN104168678B (en) | Drum-type permanent magnet heating system | |
| CN108374074A (en) | A kind of high-temperature superconductor induction heating apparatus for large-scale shell ring heat treatment | |
| CN217265895U (en) | Large-scale wire rope reel quenching machine tool | |
| CN103269534B (en) | Flexible fabricated induction heater | |
| CN204145787U (en) | Drum-type permanent magnetism heating system | |
| CN202968642U (en) | Silver welding wire online annealing device | |
| CN203279234U (en) | Flexible assembly type induction heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |