CN109385511B - Continuous induction heating annealing device for metal material - Google Patents
Continuous induction heating annealing device for metal material Download PDFInfo
- Publication number
- CN109385511B CN109385511B CN201811653788.0A CN201811653788A CN109385511B CN 109385511 B CN109385511 B CN 109385511B CN 201811653788 A CN201811653788 A CN 201811653788A CN 109385511 B CN109385511 B CN 109385511B
- Authority
- CN
- China
- Prior art keywords
- inductor
- induction heating
- transformer
- inductors
- copper bar
- 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 72
- 230000006698 induction Effects 0.000 title claims abstract description 66
- 239000007769 metal material Substances 0.000 title claims abstract description 60
- 238000000137 annealing Methods 0.000 title claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 69
- 229910052802 copper Inorganic materials 0.000 claims abstract description 69
- 239000010949 copper Substances 0.000 claims abstract description 69
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002356 single layer Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 238000002679 ablation Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Induction Heating (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
A continuous induction heating annealing device for metal materials comprises an inductor, an inductor fixing device, an inductor rack, an inductor connecting copper bar, a transformer and an induction heating power supply; the plurality of inductors of the device are connected on the same transformer and the induction heating power supply in a parallel manner, the adjacent ends of the adjacent inductors are connected on the same terminal of the transformer, the current directions of the adjacent inductors on the axes are opposite, the induced potential of the heated metal material in the inductors on the axes is avoided, and the problem of surface arc ablation caused by the occurrence of a sparking phenomenon of the processed metal material is solved; the device reduces the transformer and the induction heating power supply, and has the advantages of low cost and low power consumption; meanwhile, eddy currents of the heated metal materials in the plurality of sensors are the same, and the heating process is more uniform and stable; when the temperature of the heated metal material is adjusted, only one transformer and the parameters of the induction heating power supply are required to be adjusted, so that the adjustment work is simple.
Description
Technical Field
The invention relates to the technical field of metal material induction heating heat treatment, in particular to a metal material continuous induction heating annealing device.
Background
As known, the existing continuous induction heating device for metal materials is provided with a plurality of inductors, each inductor is provided with a transformer and an induction heating power supply, and the transformer and the induction heating power supply which are provided with each inductor work independently, so that the phase angle and the frequency of the current in each inductor cannot be controlled to keep synchronous, and therefore induced potential can be generated on the axis of the heated metal material in the inductor; the length of the metal material subjected to induction heating heat treatment is longer, when the metal material sequentially passes through a plurality of inductors, the metal material can generate bending sagging, and in order to prevent the bending sagging metal material from touching the inductors, a high-temperature-resistant metal supporting structure is arranged between two adjacent inductors; because of the irrevocable induced potential on the axis of the heated metal material in the inductor, when the heated metal material in the inductor contacts a metal supporting structure arranged between the two inductors, a sparking phenomenon can occur, so that arc ablation is generated on the surface of the processed metal material; the processed metal material with higher surface quality requirement can be scrapped, and the problem is the technical problem which cannot be solved in the technical field of metal material induction heating heat treatment at present; in addition, the existing induction heating heat treatment device needs to be provided with a plurality of transformers and a plurality of induction heating power supplies, so that the problems of high cost and high power consumption exist; meanwhile, because a plurality of transformers and a plurality of induction heating power supplies exist, when the temperature of the heated metal material is adjusted, the parameters of the plurality of transformers and the plurality of induction heating power supplies are required to be adjusted, so that the adjustment work is complex, and the problem that the temperature of the heated metal material is difficult to control easily occurs.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a continuous induction heating annealing device for metal materials, wherein a plurality of inductors of the device are connected on the same transformer and an induction heating power supply in a parallel manner, meanwhile, adjacent ends of adjacent inductors are connected on the same terminal of the transformer, the current directions along the spiral axis of the inductors in the adjacent inductors are opposite, the phase angles and the frequencies of the currents are identical, and induction potential is avoided from being generated on the axis of the heated metal materials in the inductors; the device reduces the transformer and the induction heating power supply, so that the device has the advantages of low cost and low power consumption; meanwhile, the eddy currents of the heated metal materials when sequentially passing through the plurality of sensors are the same, and the heating process is more uniform and stable; when the temperature of the heated metal material is adjusted, only one transformer and one parameter of the induction heating power supply are required to be adjusted, so that the adjustment work is simple, and the problem that the temperature of the heated metal material is difficult to control in the past is solved.
In order to achieve the aim of the invention, the invention adopts the following technical scheme: a continuous induction heating annealing device for metal materials comprises an inductor, an inductor fixing device, an inductor rack, an inductor connecting copper bar, a transformer and an induction heating power supply; the plurality of inductors are arranged and fixed on the table top of the inductor frame through an inductor fixing device; the inductor comprises an inductor body, wherein the inductor body is a single-layer spiral coil formed by winding copper tubes, and spiral axes of the inductor bodies of a plurality of inductors are arranged on the same straight line; the inductor connecting copper bar comprises two copper bars which are arranged side by side; the two ends of the inductor are respectively connected to two copper bars of the inductor connection copper bar; adjacent ends of the two adjacent inductors are connected to the same copper bar, wherein the inductors are connected with the copper bar; the transformer connecting copper bars comprise two copper bars which are arranged side by side, and the two copper bars of the inductor connecting copper bars are respectively connected with the two copper bars of the transformer connecting copper bars; the transformer is provided with two transformer terminals, and two copper bars of the transformer connecting copper bars are respectively connected to the two transformer terminals of the transformer; the induction heating power supply is connected with the transformer through a cable.
Preferably, the inductor further comprises an inductor connecting line row and an inductor connecting line terminal; the inductor connecting lines are arranged in a rectangular plate shape, two are arranged in number and are arranged at the lower part of the inductor body in parallel; one end of each inductor connecting line row is respectively connected with one end of a single-layer spiral coil of the inductor body, the other end of each inductor connecting line row is connected with a rectangular plate-shaped inductor connecting line terminal which is vertically arranged, and the inductor is connected with the inductor connecting copper bars through the inductor connecting line terminals.
Preferably, the inductor connecting copper bar is fixedly arranged at the lower part of the table top of the inductor stand.
Preferably, the sensor rack is a frame formed by combining metal profiles.
Preferably, an insulating sheet is arranged between the two copper bars of the inductor connection copper bar.
Preferably, an insulating sheet is arranged between two copper bars of the transformer connection copper bars.
Preferably, the transformer is one transformer.
Preferably, the induction heating power supply is a broadband series resonance induction heating power supply, the frequency is adjustable, and the continuous induction heating annealing device for the metal material can work in three frequency bands of medium frequency, supersonic frequency and high frequency.
Preferably, the continuous induction heating annealing device for metal materials further comprises a metal supporting structure; every two adjacent inductors form a group, and the metal supporting structure is arranged at the head end and the tail end of each group of inductors.
Preferably, the metal support structure is disposed at the head end of the first induction coil and at the tail end of the last induction coil.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention discloses a continuous induction heating annealing device for metal materials, which is characterized in that a plurality of inductors of the device are connected on the same transformer and an induction heating power supply in a parallel manner, meanwhile, adjacent ends of adjacent inductors are connected on the same terminal of the transformer, the current directions along the spiral axis of the inductors in the adjacent inductors are opposite, and the current phase angles and the current frequencies are completely the same, so that induced potential generated on the axis of the heated metal materials in the inductors is avoided, and the problem of surface arc ablation caused by the occurrence of a sparking phenomenon when the processed metal materials contact a metal supporting structure arranged between the two inductors is solved; the device reduces the transformer and the induction heating power supply, so that the device has the advantages of low cost and low power consumption; meanwhile, the eddy currents of the heated metal materials when sequentially passing through the plurality of sensors are the same, and the heating process is more uniform and stable; when the temperature of the heated metal material is adjusted, only one transformer and one parameter of the induction heating power supply are required to be adjusted, so that the adjustment work is simple, and the problem that the temperature of the heated metal material is difficult to control in the past is solved.
Drawings
FIG. 1 is a schematic diagram of a continuous induction heating annealing device for metallic materials;
fig. 2 is a schematic diagram of the connection of the inductor and the transformer.
In the figure: 1. an inductor; 101. an inductor body; 102. a sensor wire row; 103. a sensor connection terminal; 3. an inductor fixing device; 4. an inductor stand; 5. the sensor is connected with the copper bar; 6. the transformer is connected with the copper bar; 7. a transformer; 8. an induction heating power supply; 9. a metal support structure.
Detailed Description
The invention will be explained in more detail by the following examples, the purpose of which is to protect all technical improvements within the scope of the invention.
A continuous induction heating annealing device for metal materials comprises an inductor 1, an inductor fixing device 3, an inductor frame 4, an inductor connecting copper bar 5, a transformer connecting copper bar 6, a transformer 7 and an induction heating power supply 8; the four inductors 1 are arranged and fixed on the table top of an inductor stand 4 formed by combining metal profiles through an inductor fixing device 3, and the spiral axes of the four inductors 1 are arranged on the same straight line; the inductor connecting copper bar 5 comprises two copper bars which are arranged side by side, and an insulating sheet is arranged between the two copper bars; the two ends of the inductor 1 are respectively connected to two copper bars of the inductor connection copper bar 5; adjacent ends of the two adjacent inductors 1 are connected to the same copper bar of the inductor connecting copper bar 5; the metal supporting structure 9 is provided with three parts, which are respectively arranged at the head end of the first inductor 1, between the second inductor 1 and the third inductor 1 and at the tail end of the fourth inductor 1; the transformer connecting copper bar 6 comprises two copper bars which are arranged side by side, and an insulating sheet is arranged between the two copper bars; the two copper bars of the inductor connecting copper bar 5 are respectively connected with the two copper bars of the transformer connecting copper bar; the transformer 7 is provided with two transformer terminals, and two copper bars of the transformer connection copper bar 6 are respectively connected to the two transformer terminals of the transformer 7; the induction heating power supply 8 is connected with the transformer 7 through a cable; the inductor 1 comprises an inductor body 101, an inductor connecting line row 102 and an inductor connecting line terminal 103; the inductor body 101 is a single-layer spiral coil formed by winding a copper pipe, the inductor connecting line row 102 is rectangular plate-shaped, two in number and arranged in parallel at the lower part of the inductor body 101; one end of each inductor connecting line row 102 is respectively connected with one end of a single-layer spiral coil of the inductor body 101, the other end is connected with a vertically arranged rectangular plate-shaped inductor connecting line terminal 103, and the inductor 1 is connected with the inductor connecting copper bar 5 through the inductor connecting line terminal 103; the inductor connecting copper bar 5 is fixedly arranged at the lower part of the table top of the inductor stand 4; the transformer 7 is one transformer; the induction heating power supply 8 is a broadband series resonance induction heating power supply, the output power is 200 kilowatts, and the induction heating power supply 8 can work in three frequency bands of medium frequency, supersonic frequency and high frequency.
When the continuous induction heating annealing device for the metal material works normally, the heated metal material sequentially passes through the four inductors 1, alternating eddy currents can be generated on the surface of the heated metal material by alternating current passing through the inductors 1, and the metal material is heated; the surface heating depth of the heated metal material is related to the frequency of alternating current passing through the inductor, and the higher the frequency of the alternating current is, the shallower the surface heating depth of the heated metal material is; because the four inductors of the device are connected on the same transformer 7 and the induction heating power supply 8 in a parallel manner, when the heated metal material sequentially passes through the four inductors 1, the eddy current generated on the surface of the heated metal material is consistent, and the temperature rise is more uniform and stable; when the device actually works, the directions of the currents passing through the two adjacent inductors 1 along the spiral axes of the inductors 1 are opposite, and the phase angles and the frequencies of the currents are completely the same, so that the induction potential of the heated metal material in the inductors on the axes is avoided, and when the metal material moves forwards in the inductors and contacts a metal supporting structure arranged between the two inductors 1, the spark is avoided; when the temperature of the heated metal material needs to be adjusted, only parameters of the transformer 7 and the induction heating power supply 8 need to be adjusted, and the adjustment work is simple.
The power supply adopted by the device is a broadband series resonance induction heating power supply, has the characteristics of energy conservation and adjustable frequency, can work in three frequency bands of medium frequency, superaudio frequency and high frequency, can adapt to the heating requirements of heated metal materials with different materials, diameters and wall thicknesses, and has the advantage of strong adaptability.
The invention is not described in detail in the prior art.
Claims (9)
1. A continuous induction heating annealing device for metal materials is characterized in that: the induction heating device comprises an inductor (1), an inductor fixing device (3), an inductor frame (4), an inductor connecting copper bar (5), a transformer connecting copper bar (6), a transformer (7) and an induction heating power supply (8), wherein the transformer (7) is one, and the induction heating power supply (8) is one; the plurality of inductors (1) are arranged and fixed on the table top of the inductor stand (4) through the inductor fixing device (3); the inductor (1) comprises an inductor body (101), wherein the inductor body (101) is a single-layer spiral coil formed by winding copper tubes, and spiral axes of the inductor bodies (101) of a plurality of inductors (1) are arranged on the same straight line; the inductor connecting copper bar (5) comprises two copper bars which are arranged side by side; the two ends of the inductor (1) are respectively connected to two copper bars of the inductor connecting copper bar (5); the plurality of inductors (1) are connected to the same transformer (7) and the induction heating power supply (8) in a parallel manner, and adjacent ends of two adjacent inductors (1) are connected to the same copper bar of the inductor connection copper bar (5); the transformer connecting copper bar (6) comprises two copper bars which are arranged side by side, and the two copper bars of the inductor connecting copper bar (5) are respectively connected with the two copper bars of the transformer connecting copper bar (6); the transformer (7) is provided with two transformer terminals, and two copper bars of the transformer connecting copper bars (6) are respectively connected to the two transformer terminals of the transformer (7); the induction heating power supply (8) is connected with the transformer (7) through a cable.
2. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: the inductor (1) further comprises an inductor connecting line row (102) and an inductor connecting terminal (103); the sensor connecting line rows (102) are rectangular plates, two in number and arranged at the lower part of the sensor body (101) in parallel; one end of each inductor connecting line (102) is respectively connected with one end of a single-layer spiral coil of the inductor body (101), the other end of each inductor connecting line is connected with a vertically arranged rectangular plate-shaped inductor connecting line terminal (103), and the inductor (1) is connected with the inductor connecting copper bar (5) through the inductor connecting line terminal (103).
3. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: the inductor connecting copper bar (5) is fixedly arranged at the lower part of the table top of the inductor stand (4).
4. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: the sensor rack (4) is a frame formed by combining metal profiles.
5. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: an insulating sheet is arranged between the two copper bars of the inductor connecting copper bar (5).
6. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: an insulating sheet is arranged between two copper bars of the transformer connection copper bar (6).
7. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: the induction heating power supply (8) is a broadband series resonance induction heating power supply.
8. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1, wherein: the continuous induction heating annealing device for the metal material also comprises a metal supporting structure (9); every two adjacent inductors (1) form a group, and metal supporting structures (9) are arranged at the head end and the tail end of each group of inductors (1).
9. The continuous induction heating annealing apparatus for metallic materials as recited in claim 1 or 8, characterized in that: the metal supporting structure (9) is arranged at the head end of the first inductor (1) and the tail end of the last inductor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653788.0A CN109385511B (en) | 2018-12-31 | 2018-12-31 | Continuous induction heating annealing device for metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653788.0A CN109385511B (en) | 2018-12-31 | 2018-12-31 | Continuous induction heating annealing device for metal material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109385511A CN109385511A (en) | 2019-02-26 |
| CN109385511B true CN109385511B (en) | 2024-01-26 |
Family
ID=65430833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811653788.0A Active CN109385511B (en) | 2018-12-31 | 2018-12-31 | Continuous induction heating annealing device for metal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109385511B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112760475B (en) * | 2020-12-24 | 2022-12-02 | 河南力捷数控技术有限公司 | Special quenching equipment for chain wheel of mining scraper conveyor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869253A (en) * | 2006-06-14 | 2006-11-29 | 张洪民 | Method of bearing ball annealing and device using the method |
| CN202297724U (en) * | 2011-10-20 | 2012-07-04 | 洛阳用功高频感应加热设备有限公司 | Gear high-frequency hardening device based on parallel power supply |
| CN104673988A (en) * | 2015-03-20 | 2015-06-03 | 十堰高周波科工贸有限公司 | Induction heating annealing machine tool |
| DE102016104214A1 (en) * | 2016-03-08 | 2017-09-14 | Sms Elotherm Gmbh | Device for inductive heating of a metallic workpiece |
| CN206599588U (en) * | 2017-04-01 | 2017-10-31 | 鞍山市丰林精密锻压件有限公司 | A kind of induction heating apparatus of adjustable heated workpiece temperature field gradient |
| CN209397240U (en) * | 2018-12-31 | 2019-09-17 | 洛阳用功感应加热设备有限公司 | A kind of continuous induction heating and annealing device of metal material |
-
2018
- 2018-12-31 CN CN201811653788.0A patent/CN109385511B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869253A (en) * | 2006-06-14 | 2006-11-29 | 张洪民 | Method of bearing ball annealing and device using the method |
| CN202297724U (en) * | 2011-10-20 | 2012-07-04 | 洛阳用功高频感应加热设备有限公司 | Gear high-frequency hardening device based on parallel power supply |
| CN104673988A (en) * | 2015-03-20 | 2015-06-03 | 十堰高周波科工贸有限公司 | Induction heating annealing machine tool |
| DE102016104214A1 (en) * | 2016-03-08 | 2017-09-14 | Sms Elotherm Gmbh | Device for inductive heating of a metallic workpiece |
| CN206599588U (en) * | 2017-04-01 | 2017-10-31 | 鞍山市丰林精密锻压件有限公司 | A kind of induction heating apparatus of adjustable heated workpiece temperature field gradient |
| CN209397240U (en) * | 2018-12-31 | 2019-09-17 | 洛阳用功感应加热设备有限公司 | A kind of continuous induction heating and annealing device of metal material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109385511A (en) | 2019-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102962361B (en) | Detachable electromagnetic induction heater for diameter-expanded bend-pushed large-diameter elbow | |
| RU2605020C2 (en) | Heating device and plant with it for heating continuous metal sheet | |
| CN104673988A (en) | Induction heating annealing machine tool | |
| CN109385511B (en) | Continuous induction heating annealing device for metal material | |
| CN204244500U (en) | A kind of radius variable radian inductor | |
| JP6803387B2 (en) | High frequency power supply system with finely tuned output for heating workpieces | |
| CN209397240U (en) | A kind of continuous induction heating and annealing device of metal material | |
| JP2011129292A (en) | Induction heating coil | |
| JP6921085B2 (en) | High frequency power supply system with finely tuned output for workpiece heating | |
| CN102350488B (en) | Online heating device for continuous casting round bloom | |
| US9677700B2 (en) | Pipe heating apparatus and methods for uniform end heating and controlled heating length | |
| JP2013076107A (en) | Method of annealing copper wire for use in interconnector | |
| CN203999735U (en) | The sheet metal strip induction heating device that a kind of temperature is controlled | |
| CN202396016U (en) | High frequency heating inductor | |
| JP5311257B2 (en) | Power transformer for steel heating device and steel heating device | |
| CN110229956B (en) | Steel residual stress removing device | |
| CN210980831U (en) | Square induction coil for 2500 ℃ tungsten-molybdenum sintering furnace | |
| JP4101967B2 (en) | Coiled bar wire heating device | |
| CN107734728B (en) | Article heating equipment | |
| CN115704056A (en) | Induction heating device and method suitable for multi-specification steel plates | |
| CN220307417U (en) | Plane induction heating device | |
| CN108207050B (en) | Coffin-shaped structure induction coil | |
| CN210620872U (en) | Range-adjustable transverse magnetic inductor | |
| CN102234749A (en) | Processing apparatus for on line stress relieving of aluminum alloy bars and strips | |
| CN221371214U (en) | Fork induction heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |