阅读说明：本技术 用于金属产品的加热装置 (Heating device for metal product ) 是由 法比奥·瓜斯蒂尼 安德烈·科杜蒂 于 2018-02-22 设计创作，主要内容包括：用于通过电磁感应选择性地且以所期望的热功率加热金属产品(11)的一个或多个边缘(12)的加热装置(10),所述加热装置包含具有通孔(14)和至少四个极性延伸部(18)的磁性核芯(13)。(For by electromagnetic induction, selectively and with the heating device (10) at one or more edges (12) of desired thermal power heating metal products (11), the heating device to include the magnetic core (13) with through-hole (14) and at least four polarity extension regions (18).)

1. it is used for the heating device of metal product (11), it can be by electromagnetic induction selectively and with desired thermal power One or more edges (12) of the metal product (11) are heated, the heating device includes magnetic core (13), the magnetic Property core there are through-hole (14) and at least four polarity extensions that are arranged along the periphery of the through-hole (14) with equal angle Portion (18), which is characterized in that the polarity extension regions (18) are located in the identical plane laid flat and pass through coupling part (19) it is connected to each other, each of described polarity extension regions (18), which are both provided with, is connected to the corresponding of independent electric power source (21) Electric coil (20), the electric power source can at least define at each occurrence by the polarity extension regions (18) deliver pole Property, frequency and power.

2. device as described in claim 1, which is characterized in that the polarity extension regions (18) and the coupling part (19) structure At the magnetic core at single main body.

3. device as described in claim 1, which is characterized in that the coupling part (19) and the polarity extension regions (18) are Two or more main bodys, and be connected to each other in structure or functionally to obtain continuous magnetic flowing.

4. device as claimed in claim 3, which is characterized in that the polarity extension regions (18) can be selectively relative to institute It is mobile to state through-hole (14).

5. device as claimed in claim 4, which is characterized in that the polarity extension regions (18) pass through corresponding independent driving Device (26) and can orthogonally be moved selectively relative to the through-hole (14).

6. the device as described in any one of claim 3 to 5, which is characterized in that the polarity extension regions (18) are selectivity Ground is interchangeable.

7. device as described in any one of the preceding claims, which is characterized in that make in the polarity extension regions (18) extremely A few profile according to the metal product (11) is consistent in a manner of personalized.

8. device as described in any one of the preceding claims, which is characterized in that it is described magnetism core (13) include one or Multiple magnetism sections (16), are equipped with coldplate (17) in-between, and each of described magnetism section (16) is all comprising multiple Sheet magnetic material (15).

9. device described in any one of claim as the aforementioned, which is characterized in that each of described electric coil (20) All comprising being connected to the cables (23) of the electric power source (21), and the electric coil be located at cooling liquid pass through it is therein each Within cooling tube (24).

10. device as described in any one of the preceding claims, which is characterized in that each of described electric coil (20) is all It is interchangeable.

Technical field

The present invention relates to the heating devices for the metal product used in field of steel-making, for example, for Casting Equipment, In rolling equipment, a combination thereof or other equipment, wherein needing to carry out metal product in each case and at different points Heating.Heating device carrys out heating metal products using electromagnetic induction.

By way of unrestricted example, metal product under consideration includes steel billet (billet), steel ingot (bloom), wide plate, or the metal product or semi-finished product of the cross section for having edge with rectangular, rectangle or polygon.

Background technique

In the production of metal product (for example, steel billet, steel ingot or other similar product), it is known that by product heating or It keeps at a predetermined temperature, to obtain no crackle and the metal product with desired characteristic every time.

This can be obtained by using induction heating apparatus appropriate, according to the magnetic field being generated by it in each case, Especially by the magnetic field that the electric current being induced in metal product generates, allow the device due to Joule effect and to gold The a part for belonging to the section of product is heated.

It is well known, however, that induction heating apparatus neither allow obtain throughout metal product whole volume uniform hot merit Rate distribution does not allow (point-by-point) point by point or the selectively distribution of control power yet.

In fact, metal product obviously lacks thermal uniformity corresponding with edge, therefore after known heat treatment It edge can be colder than other regions of metal product.

These differences in temperature can lead to face crack or other unwanted flaws in metal product.

In addition, especially in the metal product obtained by continuous casting, the wherein position at the edge of the metal product Difference, such as the soffit edge (intrado) and the edge hogback (extrado), the metal product of generation are generally deficient of thermal uniformity, The thermal uniformity is also different relative to specific edge.

In this context, it is obviously desirable to it is at least all edges under identical heating condition, but it is clear that It also needs to be heated them must at all points all and be differently heated due to special process requirement.

It can implement heating in casting step itself or downstream.

Induction heating apparatus is also known, and is configured to there are two two opposite edges of primary heating or its tools Or more ferromagnetic nuclear core, each of which is both provided with two polarity extension regions.

In these, the scheme shown in US 5.412.183 document is provided in staggered plane simultaneously to metal Product is heated.

In addition, these known schemes do not allow selectively to make the heating at each edge different, do not allow also possibly Keep the thermal power for being passed to each edge different as needed in each case.

Therefore, the heating that at least one of there is a need to improve the prior art, and the shortcomings that overcoming the prior art is provided Device.

The object of the present invention is to provide induction heating apparatuses, and gold can be heated at different points and in each case Belong to one or more edges of product, thus selectively and in a desired manner heating metal products, so that it is guaranteed that Even result.

It is a further object to provide induction heating apparatuses, can make the uniform heat distribution at all edges, also Keep the thermal power for being passed to them different.

Another object is to provide heating device, which can be relative to heat treatment required in each case, simultaneously One or more edges are heat-treated.

Another object is to provide induction heating apparatus, can have various cross sections also according to needs or expectation heating Metal product specific or the region defined, while maintaining superperformance in the transmitting of thermal power.

Applicant has designed, has tested and implemented the present invention come the shortcomings that overcoming the prior art, and obtain these and Other purposes and advantage.

Summary of the invention

The present invention is elucidated with and characterizes in the independent claim, while subclaims describe of the invention other The deformation of feature or main inventive thought.

According to above-mentioned purpose, the present invention relates to the induction heating apparatus comprising magnetic core, which has through-hole With at least four polarity extension regions, which is arranged along the periphery of through-hole with equal angle.

According to an aspect of the present invention, polarity extension regions are located in the identical plane laid flat and pass through coupling part It is continuously joined one to the other on physics and/or function, each polarity extension regions is equipped with corresponding electric coil, the electric wire The electric energy with the coil independently of other polarity extension regions is enclosed, and polarity extension regions can define in each case by each Polarity, frequency and the power of a polarity extension regions delivering.

Such construction allows to come using induction heating apparatus selectively and with desired and appropriate different electric work Rate heats one or more edges of the metal product with four or more edges, and the metal product is, for example, steel Base, steel ingot, wide plate, or the metal product with rectangular or rectangle cross section or semi-finished product or possible metal or machine The artifact of tool.

According to possible embodiment, polarity extension regions selectively can be mobile relative to through-hole；Advantageously but non-limit Property processed, the movements of polarity extension regions and metal product the transport axis that wherein transports be it is orthogonal or substantially orthogonal to.

The movement of polarity extension regions allow adaptation to and optimize each polarity extension regions relative to metal product surface away from From, thus relative to metal product to be processed specific cross section and make through-hole transport space be adapted.

In this way, even if the wall of metal product is not straight and/or on the other hand relative to each other on the one hand It is not orthogonal, still possible acquisition bigger heating efficiency and level of security.

According to possible embodiment, magnetic core includes one or more magnetic sections, is inserted into coldplate in-between, Each of the magnetism section includes desired multiple sheet magnetic materials.

According to possible deformation, electric coil is cooled down by cooling tube, and cooling liquid transports in cooling tube.

Detailed description of the invention

From in being described below of certain embodiments, these and other features of the invention be will become obvious, described Embodiment provides as a non-limiting example and with reference to attached drawing.

Fig. 1 is the perspective view of heating device according to the present invention；

Fig. 2 is the section view of heating device according to the present invention；

Fig. 3-6 is four section views, and four kinds that schematically shows heating device according to the present invention use form；

Fig. 7-9 is three section views, and that schematically shows three kinds of forms of the possible embodiment of heating device；

Figure 10 is the section view of the embodiment of the deformation of heating device；

Figure 11 is the section view of the embodiment in the deformation using the heating device in form；

Figure 12 and 13 is two section views of the embodiment of two kinds of deformations of heating device.

In order to make it easy to understand, having used identical Ref. No. in possible place to identify identical element in attached drawing.It answers When understanding, the element and feature in an embodiment can be advantageously merged into other embodiments, without Further instruction.

Specific embodiment

It is related to the heating device 10 for metal product 11 herein with reference to the embodiment of attached drawing description.

For metal product 11, we mean that metal product or semi-finished product, such as steel billet or steel ingot, or there is side Shape, rectangle or polygon cross section molten metal product or semi-finished product, there are one or more edges 12.

According to the present invention, heating device 10 includes the magnetic core 13 with through-hole 14, and metal product 11 is carried through this Through-hole.

Magnetic core 13 may include multiple sheet magnetic materials 15, the sheet magnetic material overlap each other and clamp in a known way with The entirety for forming single main body or being made of multiple magnetic sections 16.

Sheet magnetic material 15 can be made of ferrimagnet, such as iron, nickel, cobalt, its alloy or other suitable materials.

It can be with one or more not at the magnetodielectric of sheet-form (magneto-dielectric) close material Fully or partly realize magnetic core 13.

For example, the magnetodielectric close material may include the ferromagnetic metal powder being comprised in dielectric substrate.

According to possible embodiment, magnetic core 13 includes one or more magnetic sections 16, is equipped with in-between cold But plate 17, each of described magnetism section 16 all includes desired multiple sheet magnetic materials 15.

Coldplate 17 can be active cooling type or passive cooling type, and can also be configured to shielding (screen) and add Thermal 10.

Magnetic core 13 has at least four polarity extension regions 18, and the extension is along the periphery of through-hole 14 with equal Angle setting.

In one embodiment, polarity extension regions 18 extend the entire length of magnetic core 13, to work as heating device When 10 operation, the entire longitudinal portion of the metal product 11 transported in through-hole 14 can be heated.

According to possible embodiment, if through-hole 14 is substantially rectangular, also there is possible circular edge, then pole Property extension 18 is arranged on the rectangular side defined by the periphery of through-hole 14 and the inside towards through-hole 14.

For each polarity extension regions 18, it is possible to define top and bottom.Polarity extension regions 18 are configured to It works between the top and bottom.

The progradation of polarity extension regions 18 makes it possible to heat one or more along longitudinal extension of metal product 11 A edge 12.

According to the present invention, polarity extension regions 18 are located at the identical plane laid flat.The plane laid flat is defined as at it The plane that all upper ends or all lower ends of middle polarity extension regions 18 are laid flat.

According to an aspect of the present invention, polarity extension regions 18 are connected to each other by coupling part 19, which is magnetic A part of property core 13.

For term " connection ", we mean that polarity extension regions 18 are continuously joined one to the other with coupling part 19, and Polarity extension regions 18 are functionally connect to continuity with coupling part 19, that is, even if there are minimum air void, but magnetic flow Dynamic 22 line can still recycle in-between.

According to possible embodiment, coupling part 19 and polarity extension regions 18 are two or more main bodys, and It is connected to each other in structure or functionally and is flowed with the continuous magnetism of acquisition.

Each polarity extension regions 18 is both provided with corresponding electric coil 20, is connected to independent electric power source 21, the electricity Power source can define in each case each polarity extension regions 18 polarity (referring to the direction of the line of magnetic flowing 22) and can The specific supply power of energy.

According to possible embodiment, polarity extension regions 18 and coupling part 19 can be constituted magnetic core with single main body 13, or magnetic core is constituted with the several main bodys in structure or being functionally connected to each other to obtain continuous magnetic flowing.

It there is no interruption in this way in the continuity of magnetic connection between polarity extension regions 18 and interconnecting piece 19 Construction, allow the line of magnetic flowing 22 to be closed by coupling part 19, to minimize energy loss.

This allows the magnetic flowing 22 generated by a polarity extension regions 18 in one or two pole adjacent thereto It is closed in property extension 18.

According to possible embodiment, each of electric coil 20 is all comprising the cable 23 for being connected to electric power source 21, institute It states cable 23 and winds one in polarity extension regions 18 to form the spool with one or more spirals.

The specific and point-by-point requirement for the metal product 11 to be processed being related to according to every kind, the model with frequency and power Enclosing relevant electric coil 23 can be all identical or different.

According to deformation, electric coil 20 can be alternatively or can be made alternatively.

In the accompanying drawings, characterize coil according to sense of current: " x " indicates input current, and " " indicates output electric current.

According to possible embodiment, cable 23 can at tubular form by conductive material (such as with it is coppery The material of high conductivity) Lai Shixian, and with cooling down cable 23 by its cooling liquid.

According to possible embodiment, in order to slow down the deterioration of cable 23, these cables can be located at each cooling tube 24 Within, coolant liquid passes through in cooling tube.

Cooling tube 24 can have the shape connecting with the free space around polarity extension regions 18, can be by being connected to The power output 24a of one or more power supplys supplies cooling fluid, for example, through processing or raw water or oil or other The fluid of transition temperature.

With reference to Fig. 3-6, it is possible using form to show four kinds, wherein generating magnetic field and corresponding magnetic flowing 22 Line selectively activates one or more electric coils 20.The activation can also relate to conveyed power.

According to sense of current, its intensity, its frequency and its electric coil passed through 20, induced in metal product 11 Each electric current, and especially correspond to the electric current at its edge 12.

Due to Joule effect, and near edge 12, the electric current induced heats in each case and point by point Each region 25.More specifically, the appended drawing reference 25 in attached drawing shows the region at heated edge, wherein dashed circle is variable Size shows larger or smaller impacted region, this is because the corresponding polarity extension regions 18 for influencing specific region pass Pass larger or smaller power.

Relative to the form of metal product 11, the shapes and sizes of polarity extension regions 18 are configured to generate transverse to metal The magnetic field of the direction of advance of product 11.

In one form, polarity extension regions 18 can have such surface, the line of magnetism flowing 22 from the surface at It generally parallel leaves/enters over the ground, and its through-hole 14 towards magnetic core 13.

According to deformation, according to the physical form of metal product 11 to be processed, make one or more polarity extension regions 18 at Shape.

According to the embodiment of possible non-limiting example, the surface of one or more polarity extension regions 18 can be wedge Shape, there is sloping edge, there is parabola shaped or hyperbola convex or spill.

By increasing from polarity extension regions 18 to the efficiency of the power transfer of metal product 11, these constructions effectively make magnetic Property flowing can be directed to metal product 11.

According to possible embodiment, one or more polarity extension regions 18 may include interchangeable part, this can be replaced Part is changed equipped with the forming surface according to metal product 11 to be processed, the forming surface is in use towards through-hole 14.

According to possible deformation, make at least one of polarity extension regions according to the profile of metal product 11 with personalization Mode is consistent.In other words, according to possible deformation, one or more specific polarity extension regions 18 be can have towards gold Belong to the surface of the side surface of product 11, which has the shape cooperated with the side surface.

It is deformed according to another kind, is obtained in each case with the specific extention to polarity extension regions point 18 itself Personalization, and the continuity of attention function.

For example, specific extention can be a part of polarity extension regions point 18, produced according to metal to be processed Product 11 or heat treatment to be performed and be specifically consistent therewith.

According to another kind deform, one or more polarity extension regions 18 both can for maintenance the reason of and also for a The specific reasons of property and be replaced.

About illustrative form, Fig. 3 shows the case where only one electric coil 20 is powered, on two adjacent sides Edge 12 nearby induces electric current.

Fig. 4 is shown in which that two adjacent electric coils 20 are powered, sense of current situation opposite each other.This In the case of, the electric current that induces allows to heat an edge 12 with the intensity bigger than two edges 12 adjacent thereto.

Fig. 5 is shown in which that all electric coils 20 are powered, in each current direction electric coil 20 adjacent thereto By the opposite situation of sense of current.In this case, the electric current induced allows to heat all four edges 12.

Fig. 6 shows all electric coils 20 and is powered, one in each sense of current electric coil 20 adjacent thereto The sense of current that passes through in a is on the contrary, and with the electric current that passes through in another adjacent wire circle 20 at the feelings of the same direction Condition.In this case, the electric current induced allows to heat two opposite edges 12.

According to possible embodiment, polarity extension regions 18 are selectively moveable relative to through-hole 14.

According to possible advantageous embodiment, as shown in the example in Fig. 7-11, polarity extension regions 18 selectively can It is mobile to be enough orthogonal to through-hole 14.

According to possible embodiment, it can make the movement of polarity extension regions 18 (can by corresponding independent driver 26 Can be linear), to adapt at a distance from specific polarity extension regions 18 are between the surface of metal product 11.

This construction allows to optimize the position of polarity extension regions 18, so that desired edge 12 is heated to desired depth Degree, while ensuring the high-performance of the transmitting of thermal power.

In Figure 10, a kind of situation is shown by way of example, wherein useful and be necessary that electric coil 20 as far as possible Ground is close to the surface that magnetic flowing 22 must be run on it.

In this case, moveable polarity extension regions 18 also have the pedestal for electric coil 20.

According to these embodiments, it is possible to two polarity extension regions 18 are set near specific edge 12, and It powers for one in two electric coils 20, to only induce electric current in thinking edge 12 to be heated (see Figure 11).

It is clear that can be in the case where not departing from the field of the invention and range, to heating device as described above 10 modify and/or add.

For example, containing body 27 can be arranged in through-hole 14 according to possible deformation, it can be in metal product by adding Metal product 11 is accommodated during thermal 10.

Containing body 27 can be configured to along the Route guiding metal product being defined.

Containing body 27 can be made of shielding material (screening material), which allows magnetic flowing 22 line passes through, but is not dispersed in the heat generated in metal product 11.

Containing body 27 is also used as physical barriers, to ensure that polarity extension regions 18 are not contacted with metal product 11.

It is also clear that although describing the present invention, those skilled in the art referring to some specific examples Certainly the heating device 10 of many other equivalent forms will can be obtained, there is the feature described in the claims, and Therefore it entirely falls in the protection scope thus defined.