WO2009041729A1 - 誘導加熱コイルの絶縁構造 - Google Patents
誘導加熱コイルの絶縁構造 Download PDFInfo
- Publication number
- WO2009041729A1 WO2009041729A1 PCT/JP2008/067992 JP2008067992W WO2009041729A1 WO 2009041729 A1 WO2009041729 A1 WO 2009041729A1 JP 2008067992 W JP2008067992 W JP 2008067992W WO 2009041729 A1 WO2009041729 A1 WO 2009041729A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ceramic
- induction heating
- heating coil
- alumina
- cloth
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/60—Continuous furnaces for strip or wire with induction heating
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/12—Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
- D10B2101/08—Ceramic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
- F27D2099/0015—Induction heating
-
- 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
Definitions
- the present invention relates to an insulating structure of an induction heating coil used for continuous heating while passing a steel plate.
- Steel plate manufacturing equipment such as continuous annealing furnaces and alloying furnaces for steel plate plating use induction heating coils to rapidly heat the steel sheets.
- Such an induction heating coil is a cylindrical coil conductor (solenoid type) with a steel plate passage inside, or a coil conductor installed so as to be sandwiched between the top and bottom so that the steel plate can be heated uniformly from both sides. (Traverse type) etc., and its surface is covered with heat-resistant insulating material.
- Insulating materials for this purpose have conventionally been heat-insulating castable refractories and alumina ceramics typified by high-temperature heat-resistant fibers such as aluminum cloth.
- Japanese Patent Laid-Open No. 2 0 0 5 — 1 5 6 1 2 4 UP2005-156124 A is different from the invention of the present application in that it relates to an induction heating coil of a material that is hot forged.
- An insulating structure in which the inner surface of an induction heating coil is covered with an amorphous refractory compounded with a conductive aggregate is disclosed.
- JP2006-169603 A discloses an induction heating coil having the same application as the invention of the present application and insulated by alumina ceramics. Yes. However, details of alumina ceramics are not described.
- the insulation structure of such a conventional induction heating coil is selected mainly with a focus on heat resistance and insulation, and the insulation deterioration due to the intrusion of metal fine particles (eg, zinc fume) in the atmosphere. It turned out that cannot be prevented.
- An object of the present invention is an induction heating coil that solves the above-described conventional problems and continuously heats steel plates while passing through them, and several hundreds. Extend the service life of the induction heating coil by maintaining the insulation characteristics equivalent to or higher than those of the initial stage even under continuous use conditions at high temperatures of C, and further preventing the deterioration of insulation due to the entry of fine metal particles such as zinc fume. Can It is to provide an insulation structure for an induction heating coil.
- the invention according to claim 1 of the present invention which has been made to solve the above-mentioned problems, is an induction heating coil for induction heating of a steel plate, wherein the surface facing the steel plate is coated with a ceramic cloth, and the induction coil of the ceramic cloth is coated. It is characterized in that a heat-resistant insulating layer made of a ceramic surface hardened material containing ceramic short fibers is formed on one or both of the steel side and the steel plate side.
- the induction heating coil can be of a solenoid type.
- the ceramic cloth is made of a ceramic long fiber which is made of silica or alumina monosilica and does not contain boron.
- the ceramic surface-curing material contains alumina or alumina-silica fine particles, alumina-silica ceramic short fibers, colloidal silica, and an organic adhesive. are preferred.
- the ceramic short fiber is obtained by defibrating a bulk of a ceramic fiber.
- the ceramic surface hardening material is It is preferable to spray and apply to the surface of the ceramic case to form a heat-resistant insulating layer.
- the induction heating coil may be installed in a continuous annealing furnace for steel plates or an alloying furnace for metal fitting equipment.
- the induction heating coil A ceramic cloth is coated on the surface facing the steel plate, and a heat-resistant insulating layer made of a ceramic hardened material containing ceramic short fibers is formed on the induction coil side and / or the steel plate side of the ceramic cross.
- the heat resistant insulation layer of the present invention is a ceramic surface hardened material that includes ceramic cloth having excellent heat resistance and insulation properties and ceramic short fibers. Since it is made of a material, stable heat resistance and insulation can be exhibited over a long period of time even under high temperature conditions of 500 ° C. to 120 ° C.
- the induction heating coil for induction heating the steel plate is of the solenoid type
- at least the inner peripheral surface facing the steel plate may have this structure. This is because metal particles such as zinc fume exist in the furnace through which the steel plate is passed. Needless to say, both the inside and outside of the induction heating coil may be covered with this heat-resistant insulating layer.
- the ceramic long fiber is made of siliceous or alumina monosilica and does not contain boron.
- boron does not elute, diffuse and penetrate into the surrounding ceramic cloth, and deteriorate, so that stable heat resistance and insulation can be exhibited.
- the practical heat-resistant temperatures of these ceramic cloths are more than 800 ° C for siliceous and more than 100 ° C for alumina-silica, and even for high-temperature induction heating devices that can be heated to more than 800 ° C. It can be used.
- the ceramic surface hardening material contains alumina or alumina-silica fine particles, alumina-silica ceramic short fibers, and colloidal silica, it is stable. Heat resistance and insulation can be exhibited.
- the ceramic particles and the ceramic short fibers are made of the same material, the adhesion between them is good, and the effect of preventing penetration of metal fine particles can be enhanced.
- the production cost can be reduced if the ceramic short fiber is obtained by breaking up the bulk of the ceramic fiber.
- the coating workability is good and it can be applied to a uniform thickness over a wide area.
- FIG. 1 (a), (b), and (c) are central sectional views of the induction heating coil in the present embodiment.
- FIG. 2 is an explanatory diagram showing a state in which ceramic short fibers and ceramic particles are sealed in the ceramic cloth mesh.
- Fig. 3 is an explanatory diagram of the instrument used in the withstand voltage experiment.
- FIG. 4 is a comparison diagram of the insulation state between the frame of the present invention and a conventional product at 400 ° C.
- FIGS. L (a), (b), and (c) are central sectional views of the induction heating coil 1 in an example of the present embodiment.
- FIG. 1 (a) shows a case where a heat-resistant insulating layer is formed on the steel plate side of the ceramic cloth 4 by the ceramic surface hardened material 7 containing ceramic short fibers.
- Fig. 1 (b) shows the case where a heat-resistant insulating layer made of the ceramic surface hardening material 7 is formed on the coil side of the ceramic cloth 4.
- FIG. 1 (c) shows a case where a heat-resistant insulating layer made of the ceramic hardened material 7 is formed on both the steel plate side and the coil side of the ceramic cloth 4.
- the induction heating coil 1 includes a coil conductor 1 a and a coil frame 1 b and is supported by a base 2.
- the induction heating coil 1 is a solenoid type having a steel plate passage 3 through which a steel plate S passes vertically.
- FIG. 1 (a) which may be installed horizontally so that a horizontal threading plate can be formed.
- the surface of the induction heating coil 1 facing the steel plate S that is, the surface facing the steel plate passage 3 is covered with a heat-resistant insulating layer made of a ceramic cloth 4 and a ceramic surface hardening material 7. That is, the ceramic cloth 4 is fixed to the surface of the induction heating coil 1 facing the steel plate passage 3 by the fixtures 5 and 6.
- the center part of this ceramic cloth 4 uses sealant It is preferable to adhere to the coil frame 1 b.
- the surface of the ceramic case 4 is sprayed with a ceramic surface hardening material 7 so as to have a uniform thickness.
- the ceramic case 4 has been conventionally used for insulation of induction heating coils, and there are siliceous and alumina-silicic ones.
- siliceous and alumina-silicic ones For example, there is Nushiri force fiber (maximum heat resistance inn degree 100 ° C) manufactured by Nippon Glass Fiber Co., Ltd.
- Alumina For siliceous materials, for example, Ichias' T0 M B
- a woven fabric of alumina-silica ceramic long fibers excellent in heat resistance and insulation is a composition of 70 to 80% alumina and 30 to 20% silica.
- the long fiber is obtained by combining very thin ceramic fibers having a diameter of about several im to 10 zm, mainly composed of alumina, silica, or the like, into a string.
- the length is 5 to 10 cm
- the length is 50 cm or longer.
- Ceramic cloth that can be knitted into a cloth-like ceramic cloth 4 There are various types of weaving methods, such as plain weave, twill weave, and satin weaving. However, in the present invention, there is no difference in action and effect due to the difference in weaving, so any weaving may be used.
- the thickness may be about 0.3 to 1.2 mm.
- As such an aluminum-silica ceramic cloth for example, Nippon Glass Fiber Co., Ltd. A commercially available product with a maximum heat resistance temperature of 120 ° C.) can be used.
- the ceramic surface hardening material 7 containing ceramic short fibers is applied to the surface thereof.
- the ceramic surface hardening material 7 contains, for example, alumina or alumina-silica fine particles, alumina-siliceous ceramic short fibers, colloidal silica, and an organic adhesive.
- the composition of alumina monosilica means that alumina is mass% and 40 95% silica is 60%, and the size of the fine particles is about 0.150 m in equivalent circle diameter.
- As the ceramic short fiber it is preferable to use a fiber having a diameter of about several m 10 m and a length of about several m to 500 m and deflated in bulk.
- Bulk refers to a product made from raw cotton, excluding non-fibrous spherical particles (generally called shots) in the process of melting and fiberizing raw materials such as alumina scouring force.
- Cellulose-based glue can be used as the organic adhesive.
- An excellent ceramic surface hardener 7 is a quotient of “Samopreg” from, for example, Nikka Chemical Ceramics Co., Ltd. a
- Ceramic surface hardeners that can be used with products sold under the PP name
- the ceramic surface hardening material 7 can be applied to the steel cloth side of the ceramic cloth 4 as shown in Fig. 1 (a), (b), and (c), or to the induction coil side of the ceramic cloth 4. Are the same. Either one may be selected depending on the circumstances of construction. Needless to say, it is more preferable if it is applied to both the induction coil side and the steel plate side.
- a heat resistant pad such as ceramic is used to prevent the ceramic surface hardener 7 from falling off due to contact with the steel sheet due to some trouble. It is preferable to coat the sheet.
- conventional high-temperature heat-resistant coatings such as “Taiguchi Coat” manufactured by Otake Serum Co., Ltd.
- ceramic adhesives such as “manufactured by Nikka Chemical Ceramics Co., Ltd.”
- the surface of the induction heating coil 1 facing the steel plate passage 3 is completely covered with the ceramic cross 4 and the ceramic hardened material 7. Insulate and protect induction heating coil 1 under operating temperature conditions of several hundred to 400 ° C Can. Furthermore, it is possible to completely prevent metal fine particles such as zinc fumes floating in the steel plate passage 3 from entering, and to prevent a decrease in insulation. For this reason, it is possible to reliably prevent the line stop caused by the insulation lowering of the induction heating coil 1.
- an induction heating coil covered only with a conventional ceramic cloth is less than 2 k ⁇ of insulation resistance after about two months after installation, and the insulation deterioration is remarkable.
- “Surmo Molder” which is a ceramic surface hardening material used in the present invention and “Surmo Modine” which is a ceramic adhesive which has the same chemical composition but does not contain short fibers.
- “Surmodin” is a product of Nikka Thermal Ceramics Co., Ltd., which is the same as “Thermopreda”, and its chemical composition is 95% or more of alumina + silica and the maximum operating temperature is 1400 ° C.
- test piece with “Thermodyne” applied to the surface of the water-cooled copper plate already had many fine cracks at the end of curing, and partial swelling and peeling occurred during the first heating and cooling. .
- the specimens coated with “thermopreda” on the surface of a water-cooled copper plate do not crack or peel at the end of curing, and do not crack or peel even after 5 heating / cooling cycles. It was not recognized at all.
- “Thermo Preda” and “Surmo Modine” were applied to the surface of the alumina cloth with a brush so as to have a thickness of about 1.5 mm, and then cured to produce two types of test pieces. Place these specimens in an electric furnace maintained at 65 ° C., heat them for 20 minutes, and then repeat forced air cooling in the room for 20 minutes 5 times to observe the occurrence of cracks and drops. Confirmed with.
- test piece coated with “Thermodyne” on the surface of the alumina cloth already had many fine cracks at the end of curing, and partial swelling occurred due to the first heating / cooling.
- test piece coated with “Thermopreda” showed no cracks or delamination at the end of curing, but also after repeated heating and cooling 5 times.
- the surface of the copper plate is coated with “thermopreda” only, the surface of the copper plate is coated with alumina cloth and “thermopreda”, and the surface of the copper plate is coated with only “thermodyne” 4 types are prepared: Alumina cloth and “Thermodyne” coated on the surface of the copper plate.
- test piece 1 1 Select one of the four types of test pieces, and attach the test piece 1 1 to the tip of the voltage pole 1 0 as shown in Fig. 3, and contact the ground electrode 1 2 made of copper plate to the surface.
- the current flowing through the ground electrode 1 2 was detected while gradually increasing the AC voltage applied to the four, and the withstand voltage performance of the four types of test pieces 11 was tested.
- the power supply was a commercial power supply, and it was boosted up to 200 000 V and used.
- the test conditions are a temperature of 24 ° C and a humidity of 52%.
- the test piece with only “Thermopreda” applied to the surface of the copper plate suddenly increased the charging current around 100 V, causing dielectric breakdown.
- the product of the present invention with alumina cloth and “thermo-preda” applied to the surface of the copper plate has a charging current of about 7 mA even when boosted to 200 V, and the current value during the test is also stable. It showed sufficient withstand voltage characteristics.
- the test piece in which only “thermodyne” was applied to the surface of the copper plate was subjected to dielectric breakdown at 1300 V.
- the test piece with alumina cloth and “thermodyne” coated on the surface of the copper plate has a charging current of about 2 ⁇ A when boosted to 200 V, and the current value during the test is 4 to 17 It fluctuated in the range of m A and was somewhat unstable.
- a ceramic cloth made of siliceous, boron-containing alumina-silica, boron-free alumina-silica, to which the present invention is applied, is attached to a water-cooled copper plate made of the same material as the induction coil, and a thermo-preg is applied to it.
- Table 1 shows the results of heating and evaluating the insulation and strength.
- the insulation structure according to the present invention By adopting the insulation structure according to the present invention to the induction heating coil, hundreds. Even under the continuous use condition of C at high temperature, it can maintain the insulation characteristics equal to or better than the initial level, and can prevent the insulation from deteriorating due to the intrusion of fine metal particles such as zinc fume. As a result, the service life of the induction heating coil can be extended.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Textile Engineering (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Induction Heating (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Woven Fabrics (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020107005537A KR101225479B1 (ko) | 2007-09-27 | 2008-09-26 | 유도 가열 코일의 절연 구조 |
CA2700706A CA2700706C (en) | 2007-09-27 | 2008-09-26 | Insulated structure of induction heating coil |
BRPI0817676A BRPI0817676B1 (pt) | 2007-09-27 | 2008-09-26 | estrutura isolada de bobina de aquecimento de indução |
EP08833372.9A EP2216418B1 (en) | 2007-09-27 | 2008-09-26 | Insulation structure of an induction heating coil |
CN2008801084596A CN101809172B (zh) | 2007-09-27 | 2008-09-26 | 感应加热线圈的绝缘结构 |
US12/733,922 US10080261B2 (en) | 2007-09-27 | 2008-09-26 | Insulated structure of induction heating coil |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-251083 | 2007-09-27 | ||
JP2007251083 | 2007-09-27 | ||
JP2008213937A JP4332203B2 (ja) | 2007-09-27 | 2008-08-22 | 誘導加熱コイルの絶縁構造 |
JP2008-213937 | 2008-08-22 |
Publications (1)
Publication Number | Publication Date |
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WO2009041729A1 true WO2009041729A1 (ja) | 2009-04-02 |
Family
ID=40511600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2008/067992 WO2009041729A1 (ja) | 2007-09-27 | 2008-09-26 | 誘導加熱コイルの絶縁構造 |
Country Status (9)
Country | Link |
---|---|
US (1) | US10080261B2 (ja) |
EP (1) | EP2216418B1 (ja) |
JP (1) | JP4332203B2 (ja) |
KR (1) | KR101225479B1 (ja) |
CN (1) | CN101809172B (ja) |
BR (1) | BRPI0817676B1 (ja) |
CA (1) | CA2700706C (ja) |
RU (1) | RU2430164C1 (ja) |
WO (1) | WO2009041729A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013164840A2 (en) * | 2012-03-09 | 2013-11-07 | Yadav Ganapati Dadasaheb Chemical Engineering Department, Institute Of Chemical Technology | System and method for production of membrane |
JP5950092B2 (ja) * | 2012-04-16 | 2016-07-13 | Jfeスチール株式会社 | 連続焼鈍炉 |
WO2014035480A1 (en) * | 2012-08-30 | 2014-03-06 | General Electric Company | Induction furnace with uniform cooling capability |
RU2544724C2 (ru) * | 2013-03-21 | 2015-03-20 | Открытое акционерное общество "Завод им. В.А. Дегтярева" | Печь шахтная |
US20160290680A1 (en) * | 2015-03-30 | 2016-10-06 | Stellar Generation, Inc. | Ultra High Temperature Solar-Driven Gas Heating System |
US11317481B2 (en) * | 2016-12-08 | 2022-04-26 | Koyo Thermo Systems Co., Ltd. | Supporting structure for induction heating coil, and induction heating device |
RU174244U1 (ru) * | 2017-02-21 | 2017-10-09 | Михаил Васильевич Пилягин | Устройство для термообработки металлических изделий в воздушной среде в муфеле |
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Also Published As
Publication number | Publication date |
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CN101809172A (zh) | 2010-08-18 |
CA2700706C (en) | 2012-10-09 |
EP2216418A4 (en) | 2013-05-29 |
US20100243644A1 (en) | 2010-09-30 |
BRPI0817676A2 (pt) | 2015-03-31 |
KR20100055470A (ko) | 2010-05-26 |
US10080261B2 (en) | 2018-09-18 |
CN101809172B (zh) | 2012-06-27 |
EP2216418B1 (en) | 2019-08-07 |
JP2009097080A (ja) | 2009-05-07 |
KR101225479B1 (ko) | 2013-01-22 |
RU2430164C1 (ru) | 2011-09-27 |
BRPI0817676B1 (pt) | 2016-11-08 |
EP2216418A1 (en) | 2010-08-11 |
CA2700706A1 (en) | 2009-04-02 |
JP4332203B2 (ja) | 2009-09-16 |
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