CN101682941B - Method and device for heating tubular or solid parts by induction heating - Google Patents
Method and device for heating tubular or solid parts by induction heating Download PDFInfo
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- CN101682941B CN101682941B CN200880016004.1A CN200880016004A CN101682941B CN 101682941 B CN101682941 B CN 101682941B CN 200880016004 A CN200880016004 A CN 200880016004A CN 101682941 B CN101682941 B CN 101682941B
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- tubular body
- equipment
- internal layer
- parts
- magnetic field
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
- B29B13/024—Hollow bodies, e.g. tubes or profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/10—Thermosetting resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
Abstract
The invention relates to a device (10) for heating a tubular part (18) or a solid part, especially for the conversion or moulding of a tube, comprising: a tubular body (12) made of non-magnetic material, intended to contain the part (18), an electrically conductive internal layer (16) placed inside the tubular body (12) and intended to be in contact with the part (18), inductor means (14) surrounding the tubular body (12) in order to generate a magnetic field, the device (10) including means in order for the magnetic field generated by the inductor means to pass through the tubular body (12),thus inducing currents directly in the internal layer (16) and therefore localizing the heating close to the interface between the internal layer and the part to be heated.
Description
The present invention relates to the induction heating of tubulose or solid parts, its objective is tubular part is particularly processed or molding by the tubular part that thermoplasticity or thermosetting base composite material consist of.
The technology of induction heating is widely used in the molding of conventional composite materials parts, particularly because its energy transfer speed is higher than the conventional heating device, and especially because high efficiency, accuracy and repeatability that it provides.At present, the heating of pipe (especially prepare by molding composite material tube aspect) also fails to realize gratifying induction technology.For example, known device comprises the aluminum tubular body with inductor, and the electric current of wherein being inducted by these inductors impels the heating of tubular body.The shortcoming of this equipment is that it is " integral body " heating to tubular body.Because the diffusion of heat in aluminium body needs the time, this just means tediously long heating time.To be accompanied by high loss tediously long heating time because except productivity low, it correspondingly causes high energy consumption and proportional cooling time.Also have shortcoming such as described the sort of equipment just now: it uses and show inefficient material with regard to induction heating.
The object of the invention is to provide a kind of simple, method and apparatus that cost is low, and it makes it possible to by responding to effective heating tubulose or solid parts, in particular for going out pipe from composite molded.The present invention is based on following discovery: the most effectively mold apparatus provides those mold apparatus of surface type heating, that is, and and those mold apparatus of molded surface that can the localized heating mould.Thereby, avoided the energy loss that causes owing to whole heating mould.
Thereby, the present invention relates to a kind of equipment for heating tubulose or solid parts, it comprises:
-design is used for holding the tubular metal body of described parts,
-conduction internal layer, it places in the described tubular body and design is used for contacting with described parts,
-induction installation, it centers on described tubular body with generation magnetic field,
Described equipment is so that tubular body is passed in the magnetic field that is produced by induction installation, thus in internal layer directly induced current and thus so that described heating can be between internal layer and parts to be heated the near interface localization.
Thereby, by the present invention, induced current and thus so that heating in internal layer, localize, directly near the thickness at the tubular body pipe to be heated and not.Therefore, equipment according to the present invention has directly at the molding region of the near interface between molding region and the material and do not come the advantage of localized heating in mold thickness, and this means a large amount of energy savings.This kind equipment also has makes simple and the low advantage of cost.
In one embodiment, this equipment so that the penetration depth of magnetic field in tubular body greater than the thickness of tubular body.
In one embodiment, the penetration depth through type δ in magnetic field=50 (ρ/(F μ r))
1/2Come to determine that wherein ρ is the resistivity of the nonmagnetic substance that consists of tubular body, μ r is the relative permeability of material, and F be the frequency of electric current mobile in induction installation.
In one embodiment, internal layer is positioned on the inner surface of tubular body.
In one embodiment, this equipment so that the penetration depth in magnetic field less than the thickness sum of tubular body and internal layer, so that any electric current of not inducting at the interface between internal layer and parts to be heated.
In one embodiment, with on the interior inner surface that is placed on tubular body.
In one embodiment, the at the interface generation induced current of magnetic field between internal layer and tubular body.
In one embodiment, on the interior outer surface that is placed on inner circle post core, described core is located coaxially within the described tubular body.
In one embodiment, this equipment comprises the second internal layer that places on the tubular body inner surface.
In one embodiment, tubular body comprises relative to each other movably two elements, makes it possible to open described tubular body.
In one embodiment, when described tubular body was closed, two elements were electric insulations.
In one embodiment, internal layer comprises magnetic compound, preferably has high relative permeability and the magnetic compound of resistivity.
In one embodiment, tubular body comprises non-magnetic compound, preferably has the non-magnetic compound of high resistivity.
In one embodiment, tubular body comprises magnetic compound, preferably has high relative permeability and the magnetic compound of resistivity.
In one embodiment, tubular body comprises the layer that is made by nonmagnetic substance at its outer surface towards induction installation, and described nonmagnetic substance preferably has high conductivity.
In one embodiment, the thickness of internal layer is less than 1 millimeter.
In one embodiment, this equipment has so that the internal pressure device that heating tube can directly arrange against tubular body.
The invention still further relates to all as mentioned defined the sort of equipment of a kind of usefulness and make the method for the parts that made by composite material.
By the following figure of reference, other characteristics of the present invention and advantage will display from the following description of making as non-exhaustive, wherein:
-Fig. 1 show according to present device along the sectional view perpendicular to the plane of this equipment symmetry axis;
-Fig. 2 shows the half section figure of Fig. 1 equipment that intercepts along the sagittal plane of equipment,
-Fig. 3 shows the specific embodiments of Fig. 2 equipment,
A kind of replacement scheme of-Fig. 4 presentation graphs 1 equipment,
-Fig. 5 shows a kind of replacement scheme according to equipment of the present invention.
Fig. 1 shows according to equipment 10 of the present invention.In this example, it is designed to the cylindrical member that molding is made by composite material.This equipment or mould 10 have the tubular body 12 that sensed apparatus 14 centers on.Described tubular body 12 is made of nonmagnetic substance, is made of stainless steel in this example.The inner surface of described tubular body 12 is take the internal layer 16 of magnetic material as liner, and described magnetic material is for for example nickel-base alloy or have steel alloy such as the element of nickel, chromium or titanium.This internal layer 16 consists of molding region and thermals treatment zone, and its design is used for contacting with parts to be heated and/or to be molded.When apply the alternating current I that frequency is F to transformer device 14
1The time, this equipment forms so that the magnetic field that produces induced current I in magnetic internal layer 16
2
Fig. 2 represents the half section figure along the sagittal plane of mould 10, and it was fit to the heating tubular part or managed 18 this moment.With the thickness e that has to be heated
3Parts place in the tubular body 12.Pipe 18 is for example made by thermoplastic matrix or thermosetting base composite material.Near the outer surface of tubular body 12, arrange the wire turn (turn) 14 of transformer device 14
1, 14
2, 14
3, 14
4, 14
5, these wire turns are passed by the internal cooling channel 15 that cooling fluid is flowed.For induced current in internal layer 16, the magnetic field that transformer device produces is e at thickness
2This layer place should have nonzero value.In other words, must pass thickness around the magnetic field that the inductor wire turn of tubular body 12 produces is e
1Tubular body 12.The penetration depth in magnetic field is limited by the size that is called as collection skin thickness (skinthickness).
The mode that collection skin thickness δ in the tubular body 12 can be similar to is by following formula δ=50 (ρ/(F μ r))
1/2Next definite, wherein ρ is the resistivity (unit is μ Ω .cm) of the nonmagnetic substance of formation tubular body 12, and μ r is the relative permeability of material, and F is the frequency (unit is hertz) of induced current.For nonmagnetic substance, we get μ r=1, and formula becomes δ=50 (ρ/F)
1/2Thereby, can find out that collection skin thickness is proportional with the resistivity of the nonmagnetic substance that consists of tubular body 12.For example, resistivity is the skin depth δ that the nonmagnetic substance of 300 μ Ω .cm and frequency F may obtain 50mm when equaling 300Hz.Therefore the nonmagnetic substance of selecting to benefit from high resistivity produces the magnetic field penetration of expectation.At this on the one hand, select stainless steel suitable compromise to produce between resistivity and mechanical resistance (mechanicalresistance), in fact tubular body 12 has to stand the main stress of equipment situation being used for molding.Yet tubular body 12 can be by any nonmagnetic substance with high resistivity, for example has such as the manganese-base alloy of the alloying element of nickel and copper to make.
When the resistivity of known tubular body 12, select induced current I
1Frequency F to obtain greater than thickness e
1Collection skin thickness.Preferably, the highest frequency of this condition will be selected to satisfy.Certainly, by induction heating induct the joule power with
Proportional.Therefore, frequency is larger, and Implantation Energy will be larger.According to the material of application and constitution equipment, this process will be in 100 hertz to some kilo hertzs frequency range, thereby make it to obtain tens millimeters collection skin thickness.Thereby magnetic field is passed tubular body 12 and is arrived internal layer 16, at this internal layer 16 interior generation induced current I
2, be also referred to as eddy current.Then at these induced current I
2Effect under, by Joule effect heating internal layer 16, thereby so that manage 18 and can be heated and within the very short time, rise to preferred temperature.
Therefore, realized near the present invention directly localizes induction heating mould/material interface purpose.Certainly, induced current is e at thickness
2 Internal layer 16 in local the generation, this thickness is less than 1 millimeter, compares very littlely with the thickness of mould 10, thereby can obtain surface heating.On the other hand, because tubular body 12 is made by nonmagnetic substance, its induction heating that stands is considerably less.
One of advantage of the present invention is: it makes it possible to surface heating, and benefits from simultaneously the advantage of metal structure of the tubular body 12 of this equipment.Certainly, use metal-made to make tubular body 12 and produce mechanical resistance (stress and fatigue) and the hot property (low bulk is used for available heat conduction of cooling etc.) that from mold, to expect.Use such as pottery will can not provide the benefit of these character to transparent (permeable) material in field.
In preferred change programme, the penetration depth in magnetic field is so that produce induced current in the internal layer at the interface 16 between internal layer 16 and tubular body 12.Thereby the surface of the internal layer 16 that contacts with tubular part to be heated is not passed by any induced current.In other words, collection skin thickness δ is greater than e
1, but strictly less than (e
1+ e
2).Therefore interface between internal layer 16 and the tubular body 12 is directly heated by induction, and produced simultaneously heat is propagated towards the interface between internal layer 16 and the parts 18 subsequently by conduction.For example, use resistivity equal 10 μ Ω .cm and relative permeability equal 500 and frequency F be the nickel internal layer of 300Hz, in magnetic field, obtain the penetration depth of about 0.41mm.Then for internal layer provides enough thickness, for example be at least the thickness of 0.5mm, do not passed by any induced current with the surface of guaranteeing to contact with parts.This protection scheme has the advantage that realizes making it possible to simultaneously according to surface heating of the present invention electric conduction of heating parts (for example being made by carbon fiber), because the interface between internal layer 16 and parts to be heated does not have induced current.
Can be in many ways, for example by fixed metal plate or by deposition materials such as plasma or electrolytic deposition material, the internal layer 16 of magnetic material is fixed on the mold.The magnetic material that is used for this internal layer 16 is magnetic compound, and this magnetic compound can have Curie temperature and the resistivity higher than copper.For example, it can be for based on nickel, chromium, and/or the steel alloy of titanium.The large resistivity of this internal layer 16 is favourable, and this is because it makes it possible to the more effective induction heating that passes through.Yet, have to be noted that the magnetic permeability of the material that consists of this layer also affects the efficient (referring to above-cited formula) of induction heating.
In a kind of change programme, mould 10 comprises the internal pressure device 20 (referring to Fig. 2) that is positioned at pipe 18, and it can make the outer surface of pipe 18 be close to tubular body 12 during molded operation.These pressure apparatus 20 are used for the cylindrical metal parts (can be tubulose or solid) that raise and expands with temperature for for example expandable bladder type device (being made by metal or silicon) or design, and this expansion is enough to make pipe 18 directly against internal layer 16 settings.In another example, similarly, can use the shape-memory properties of some alloy, so that the parts of being made by this material will have different shapes according to temperature, more specifically be to have different shapes according to the temperature between ambient temperature and molding temperature.Such parts can for example be from the thin plate of reeling.
Fig. 3 shows a kind of change programme of equipment, wherein provides metal-cored 22, places internal layers 16. in this structure metal-cored 22, and equipment is so that tubular body 12 and pipe 18 are passed to arrive core 22 in the magnetic field that is produced by inductor.In other words, the penetration depth of magnetic field in mould 10 is greater than e
1Certainly, if skin depth greater than e
1, magnetic field directly arrives internal layer 16, because it passes parts to be heated 18.Because these parts 18 are nonconducting, it is transparent for magnetic field.Thereby, as the situation in change programme before this, the internal layer 16 of magnetic field on the outer surface that is arranged in core 22 eddy current of inducting.Therefore in this change programme, by means of its inner surface heating tube 18.In this example, the magnetic material that core 22 has is similar to the magnetic material that forms internal layer 16, and then these two elements only form an one piece, have simplified thus the manufacturing of core 22.
In a kind of unshowned change programme, equipment 10 has two magnetic internal layers, and ground floor is positioned on the inner surface of tubular body 12, and as shown in Figure 2, and the second layer is positioned on the outer surface of core, as shown in Figure 3.In this structure, induction installation is carried out as follows: so that the penetration depth in magnetic field is greater than (e
1+ e
2), thereby make magnetic field can pass tubular body 12, the first internal layer and parts (it is transparent to magnetic field) to be heated, arrive the second internal layer and in this second internal layer, produce induced current thus.Use this structure to obtain simultaneously on surface within it or the outer surface dual-heated to tubular part.
In practice, tubular body 12 is for open element, so that it can discharge component end item.In this case, tubular body 12 can by form pipe relative to each other movably two elements 121,122 (referring to Fig. 4 or 5) make.In addition, tubular body 12 has and places in tubular body 12 thickness and have the symmetrical axial cooling duct that is parallel to this tubular body 12.These passages are so that flowing of cooling fluid can be cooled off parts after the processing.
In being shown in a kind of change programme of Fig. 4, tubular body comprises the electric brake that this tubular body is divided into two electrical insulation parts 121 and 122 at one of its diametral plane, for example the layer 123 by being made by insulating material.In this structure, the electric insulation between two elements 121 and 122 plays the effect of air-gap, flows in this air-gap by the magnetic field that inductor produces.Thereby, each in the magnetic field embracing element 121 and 122, inner surface and the outer surface at these two elements produces induced current I thus
3And I
4The advantage of this structure is it so that may eliminate the impact of magnetic penetration depth in element 121 and 122.Certainly, no matter the thickness of these elements how, induced current flows at the inner surface of these two elements.If mould 10 has the magnetic internal layer 16 that is positioned at tubular body 12, can guarantee that then it is passed by induced current.If mould 10 has the inner core that comprises internal layer 16, it directly is subject to the effect in the interior mobile magnetic field of mould 10, in addition, the electric current that the inner surface in element 121 and 122 flows also in internal layer 16, on the surface of core 22 induced current.
As indicated above, the advantage of the structure of Fig. 4 is that it can be used for eliminating the impact of electromagnetism collection skin thickness.Therefore, has the larger degree of freedom aspect the power frequency of transformer device 14 selecting to be applied to.Now, when setting all parameters, the frequency of known increase electromagnetic field will improve the efficiency of heating surface.This will further reduce collection skin thickness.Thereby becoming to be conducive to provide by magnetic material for example is equipped with the skin 124,125 that is made of such as copper by the nonmagnetic substance example by being similar to the tubular body 12 that the material that forms layer 16 makes and each that is conducive to for the halfpipe body.The same with 122 with electrical insulation parts 121, nonmagnetic layer 124 insulate by means of identical insulating barrier 123 with 125 in this example.This kind equipment will move with for example high frequency of 10～100kHz ideally.Certainly, will select the frequency of electromagnetic field, so that collection skin thickness is less than will be greater than 1 millimeter non magnetic outer field thickness.Thereby electromagnetic field is the outer surface of penetrating tubular body 12 not, and this is because non magnetic outer 124,125 formation electro-magnetic screen layers.In addition, owing to it is non magnetic and has low resistivity, suffer thus considerably less induction heating.In contrast, as previously discussed, because electric current I
3And I
4Flow at the inner surface of tubular body 12, this tubular body 12 is made by nonmagnetic substance, so it is highly reaction for induction heating, and thereby be heated to a great extent, the while is generation current in core 22 further.Thereby tubular part 18 has obtained dual-heated on the outer surface within it simultaneously.For preventing energy loss any in the tubular body, also between each element 121,122 and insulating barrier 123, provide the non-magnetic screen layer.
Be shown in a kind of change programme of Fig. 5 also for the tubular body of being made by magnetic material provides two electric insulation parts 121 and 122, and non-magnetic screen layer 124 and 125 are provided, but inner core is not provided.Operation principle is identical with the situation of Fig. 4, and difference is that magnetic internal layer 16 is on the inner surface of element 121 and 122.Thereby layer 16 is directly by induced current I
3And I
4Pass, and thereby be locally heated.In fact, the profile between the inner surface of internal layer 16 and tubular body is unintelligible, because it is made by identical magnetic material.For preventing any energy loss, layer 124 and 125 also with element 121 and 122 with insulating barrier 123 separations, as shown in Figure 5.As the case may be, if necessary, these two screens can extend the level that reaches internal layer 16.This kind equipment especially goes for heating and molding solid parts.
Equipment of the present invention is particularly suitable for pipe or the cylinder that molding is for example made by thermoplasticity or thermosetting base composite material by composite material.It can be used for significantly reducing component processing required circulation timei.In fact, the energy of inductor directly injects internal layer 16.The thickness that this layer is very little rises to the temperature of expectation very fast so that the surface that contacts with parts can be heated/process, and this is because equipment 10 is not " integral body " heating.For parts being heated to given temperature, compare with the legacy equipment situation, the energy that injects thus still less and the time of carrying out shorter.Therefore, also reduce on respective degrees ground required cooling time, this is because the heat energy that dissipates is less, thus circulation timei provide extra gain (and when cooling device can place tubular body 12 thickness in and internal layer as much as possible near the time, all the more so).At last, required lower energy means economy, because the required capacity of induction generator is lower.
Traditionally, also be designed for the mechanical device (not shown) of discharging institute's member made.Therefore for the location of simplifying parts with remove, also provide open inductor.These open inductors are for example to be made into to be fixedly joined to respectively each halfpipe body 121 of tubular body 12, two parts of 122, and when tubular body 12 closure, these parts electrically contact.
Manufacture method is implemented as follows:
-the one or more of materials of tubular part are arranged on tubular body inside,
-heat molding region and by the pressurization of internal pressure device, continue the given time,
-carry out mold cooling with cooling-part,
-discharge/remove parts.
Claims (15)
1. be used for the equipment (10) of heating tubulose or solid parts (18), it comprises:
-consist of and design the tubular metal body (12) that is used for holding described parts (18) by nonmagnetic substance,
-consist of described parts molding region, consist of, place in the described tubular body (12) and design is used for the conduction internal layer (16) that contacts with described parts (18) by magnetic material,
-around the induction installation (14) of described tubular body with generation magnetic field,
Described equipment (10) comprises so that described tubular body (12) is passed in the magnetic field that is produced by described induction installation, therefore induced current and thus so that the means that heating can the near interface between described internal layer and described parts to be heated localizes in described internal layer (16).
2. according to claim 1 equipment, comprise so that the penetration depth of described magnetic field in described tubular body (12) greater than the thickness (e of described tubular body
1) means.
3. according to claim 2 equipment, the penetration depth through type δ in wherein said magnetic field=50. (ρ/(F. μ r))
1/2Come to determine that wherein ρ is the resistivity of the nonmagnetic substance that consists of described tubular body (12), μ r is the relative permeability of described material, and F be the frequency of electric current mobile in described induction installation.
4. according to claim 1 equipment, wherein said internal layer (16) places on the inner surface of described tubular body (12).
5. according to claim 2 equipment, comprise so that the penetration depth in described magnetic field less than the thickness sum (e of described tubular body (12) and described internal layer (16)
1+ e
2), thereby the means of any electric current of not inducting at the interface between described internal layer and described parts (18) to be heated.
6. according to claim 1 equipment, wherein said internal layer (16) places on the outer surface of interior cylindrical core (22), and described core is located coaxially in the inside of described tubular body (12).
7. according to claim 6 equipment, it comprises the second internal layer that places on described tubular body (12) inner surface.
8. according to claim 1 equipment, wherein said tubular body (12) comprises two elements (121,122), described two elements relatives are in removable so that can open described tubular body (12) each other.
9. according to claim 8 equipment, wherein when described tubular body (12) was closed, described two elements (121,122) were electric insulations.
10. according to claim 1 equipment, wherein said internal layer (16) comprise and have high relative permeability and the magnetic compound of resistivity.
11. equipment according to claim 1, wherein said tubular body (12) comprises the non-magnetic compound with high resistivity.
12. equipment according to claim 10, wherein said tubular body comprise the layer (124,125) that is made by the nonmagnetic substance with high conductivity at its outer surface towards induction installation.
13. according to the equipment of aforementioned claim 1, the thickness (e of wherein said internal layer (16)
1) less than 1 millimeter.
14. equipment according to claim 1, wherein said parts are tubuloses, and described equipment comprises that the outer surface that makes described tubular part (18) can be against the internal pressure device of described tubular body (12).
15. the method for the manufacture of pipe, one equipment during it uses according to claim 1-14.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0754481 | 2007-04-13 | ||
| FR0754481A FR2915053B1 (en) | 2007-04-13 | 2007-04-13 | METHOD AND DEVICE FOR HEATING TUBULAR OR INDUCTIONALLY FULL PIECES. |
| PCT/FR2008/050653 WO2008142337A2 (en) | 2007-04-13 | 2008-04-11 | Method and device for heating tubular or solid parts by induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101682941A CN101682941A (en) | 2010-03-24 |
| CN101682941B true CN101682941B (en) | 2013-10-16 |
Family
ID=38596330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880016004.1A Expired - Fee Related CN101682941B (en) | 2007-04-13 | 2008-04-11 | Method and device for heating tubular or solid parts by induction heating |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101682941B (en) |
| FR (1) | FR2915053B1 (en) |
| TW (1) | TWI478633B (en) |
| WO (1) | WO2008142337A2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2635420A2 (en) | 2010-11-04 | 2013-09-11 | 3M Innovative Properties Company | Method of forming filter elements |
| CN113593860A (en) * | 2015-05-12 | 2021-11-02 | 阿尔法能源技术公司 | System and method for reducing undesired eddy currents |
| US20170055581A1 (en) * | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Article for use with apparatus for heating smokable material |
| JP6120192B1 (en) * | 2016-07-25 | 2017-04-26 | Tsk株式会社 | Electromagnetic induction heating device and light alloy wheel manufacturing method |
| JP7360400B2 (en) | 2018-05-25 | 2023-10-12 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Susceptor assembly for aerosol generation including susceptor tube |
| FR3089775B1 (en) | 2018-12-18 | 2021-01-01 | Revology Sa | MOBILER WITH AN OPTIMIZED DESIGN FOR THE CIRCULAR ECONOMY |
| WO2021207465A1 (en) * | 2020-04-08 | 2021-10-14 | Watlow Electric Manufacturing Company | Resistance calibration and monitoring of thermal systems |
| CN112847906B (en) * | 2021-01-25 | 2023-03-14 | 宜宾天亿新材料科技有限公司 | Multi-section type pipe heating device used before preparation of PVC-O pipe fitting |
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| US4563145A (en) * | 1983-12-22 | 1986-01-07 | U.S. Philips Corporation | Alternately heatable and coolable moulding block |
| US5338920A (en) * | 1990-11-30 | 1994-08-16 | Metcal, Inc. | Method of manufacturing and joining electro-fusion fitting |
| CN1454736A (en) * | 2002-04-26 | 2003-11-12 | 东芝机械株式会社 | Casting device and molten-metal supplying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10175252A (en) * | 1996-12-19 | 1998-06-30 | Tahara:Kk | Method and apparatus for regulating temperature of stretch blow molding injection preform |
| JP3985949B2 (en) * | 2002-02-21 | 2007-10-03 | 第一高周波工業株式会社 | High frequency induction heating method |
| CN2540273Y (en) * | 2002-06-07 | 2003-03-19 | 张红中 | Direct heating equipment for processing plastic and rubber |
| FR2867939B1 (en) * | 2004-03-18 | 2007-08-10 | Roctool | METHOD FOR HEATING MATERIALS TO PRODUCE OBJECTS AND DEVICE USING THE METHOD |
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2007
- 2007-04-13 FR FR0754481A patent/FR2915053B1/en not_active Expired - Fee Related
-
2008
- 2008-04-11 CN CN200880016004.1A patent/CN101682941B/en not_active Expired - Fee Related
- 2008-04-11 WO PCT/FR2008/050653 patent/WO2008142337A2/en active Application Filing
- 2008-04-14 TW TW097113438A patent/TWI478633B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563145A (en) * | 1983-12-22 | 1986-01-07 | U.S. Philips Corporation | Alternately heatable and coolable moulding block |
| US5338920A (en) * | 1990-11-30 | 1994-08-16 | Metcal, Inc. | Method of manufacturing and joining electro-fusion fitting |
| CN1454736A (en) * | 2002-04-26 | 2003-11-12 | 东芝机械株式会社 | Casting device and molten-metal supplying device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2915053A1 (en) | 2008-10-17 |
| TW200906232A (en) | 2009-02-01 |
| WO2008142337A2 (en) | 2008-11-27 |
| WO2008142337A3 (en) | 2009-01-22 |
| TWI478633B (en) | 2015-03-21 |
| CN101682941A (en) | 2010-03-24 |
| FR2915053B1 (en) | 2009-07-17 |
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