WO2019240014A1 - Objet à chauffer pour dispositif de chauffe par induction électromagnétique, procédé pour chauffer l'objet à chauffer, et procédé de fabrication de feuille d'aluminium - Google Patents

Objet à chauffer pour dispositif de chauffe par induction électromagnétique, procédé pour chauffer l'objet à chauffer, et procédé de fabrication de feuille d'aluminium Download PDF

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Publication number
WO2019240014A1
WO2019240014A1 PCT/JP2019/022603 JP2019022603W WO2019240014A1 WO 2019240014 A1 WO2019240014 A1 WO 2019240014A1 JP 2019022603 W JP2019022603 W JP 2019022603W WO 2019240014 A1 WO2019240014 A1 WO 2019240014A1
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WO
WIPO (PCT)
Prior art keywords
heated
electromagnetic induction
induction heating
heating device
magnets
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Application number
PCT/JP2019/022603
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English (en)
Japanese (ja)
Inventor
忠 窪野
精次 河本
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Tsk株式会社
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Application filed by Tsk株式会社 filed Critical Tsk株式会社
Publication of WO2019240014A1 publication Critical patent/WO2019240014A1/fr

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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
    • 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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications

Definitions

  • the present invention relates to an object to be heated for an electromagnetic induction heating apparatus that heats the object to be heated by generating an induction current, a method for heating the object to be heated, and a method for manufacturing an aluminum wheel.
  • an electromagnetic induction heating apparatus that heats an object to be heated made of a conductor by generating an induction current.
  • an induction current is generated in an object to be heated by rotationally driving the object to be heated made of an aluminum wheel with a rotating body in which a plurality of magnets face each other with the same magnetic pole.
  • An electromagnetic induction heating apparatus that heats by heating is disclosed.
  • the present invention has been made to address the above-described problems, and has as its object the object to be heated for an electromagnetic induction heating apparatus capable of shortening or equalizing the heating time, a method for heating the object to be heated, and aluminum
  • the object is to provide a method of manufacturing a wheel.
  • a feature of the present invention is an object to be heated consisting of a raw material or a semi-finished product to be softened by heating with an electromagnetic induction heating device in a process up to a finished product, the electromagnetic induction heating device comprising: A table in which the magnetic poles of a plurality of magnets are arranged in a plane in the same direction, a table driving means for relatively rotating and driving the object to be heated and the table, and the object to be heated opposed to each magnet of the table A workpiece support that is supported in a state, and heats an object to be heated by causing an induction current to be generated by rotating and rotating the object to be heated and a table that are opposed to each magnet.
  • the object to be heated is that a portion of the table facing the magnets is a flat surface parallel to the rotation surface of the magnets and having a flatness of 5 mm or less.
  • the object to be heated used in the electromagnetic induction heating device is a flat surface in which the portion of the table facing each magnet is parallel to the rotation surface of each magnet. Since a flat portion having a degree of 5 mm or less is formed, according to experiments by the present inventors, the heating time of the object to be heated can be shortened and the heating time can be made uniform.
  • the object to be heated is formed in a trapezoidal shape with a trapezoidal cross-sectional shape, and the planar portion has a trapezoidal shape.
  • the object to be heated is formed on the upper base surface of the trapezoidal shape.
  • the object to be heated used in the electromagnetic induction heating device has a trapezoidal cross-sectional shape and is formed in a bar shape, and the plane portion has a trapezoidal shape. It is formed on the surface of the trapezoidal upper base side of the object to be heated.
  • the to-be-heated object can reduce the time burden and economical burden of manufacture of a to-be-heated object compared with the case where a plane part is formed in the trapezoid-shaped lower-bottom side surface.
  • a portion that forms a flat portion can be formed at the bottom of the casting mold, so that the object to be heated can be easily cast.
  • the object to be heated is formed in a plate shape or a rod shape extending in a radial direction of a rotation circle of the table.
  • a rough portion in which a flat portion is not formed is formed in a central portion of a table that is relatively opposed to the table in the object to be heated and is relatively rotated, and the flat portion is formed outside the rough portion.
  • the object to be heated used in the electromagnetic induction heating device is a portion where the table in the object to be heated formed in a plate shape or a rod shape is opposed.
  • a rough portion having no flat portion is formed at the center portion of the relatively rotating table, and a flat portion is formed outside the rough portion.
  • the object to be heated does not need to form a flat portion having a high flatness for a portion where the induction current of the rotation center portion of the table is small, and the object to be heated can be manufactured while suppressing a decrease in the heating effect. Time burden and economic burden can be reduced.
  • the rough portion can be used as a space for marking such as the lot number or manufacturer name of the object to be heated.
  • the present invention can be implemented not only as an invention of an object to be heated for an electromagnetic induction heating apparatus, but also as an invention of a method for heating an object to be heated and a method for manufacturing an aluminum wheel.
  • the heating method of the object to be heated is such that a table in which the magnetic poles of a plurality of magnets are arranged in a plane in the same direction and a plate-shaped or rod-shaped object to be heated and the table are relatively rotated. It has a table driving means for driving and a work support that supports the object to be heated in a state of being opposed to each magnet of the table, and relatively rotates the object to be heated and the table arranged to face each magnet.
  • a method of heating an object to be heated using an electromagnetic induction heating device that heats an object to be heated by generating an induction current by displacing the object to be heated.
  • the method for heating the object to be heated is such that the object to be heated is formed in a trapezoidal shape with a cross-sectional shape extending in a rod shape, and the planar portion is the upper base of the trapezoidal shape in the trapezoidal object to be heated It may be formed on the side surface.
  • the heating method of a to-be-heated target object can anticipate the effect similar to the said to-be-heated target object.
  • the heating method of the object to be heated includes a table in which the magnetic poles of a plurality of magnets are arranged in a plane in the same direction, and a table that relatively rotationally drives a plate-shaped or rod-shaped object to be heated and the table.
  • a driving means and a work support that supports the object to be heated in a state of being opposed to each magnet of the table, and the object to be heated and the table disposed to face each magnet are relatively rotationally displaced.
  • the A flat portion forming step of forming may be to include a work placement step of placing the same object to be heated so as to face each of the flat portion in each magnet to the workpiece support in the object to be heated. According to this, the heating method of the object to be heated can form the flat part by the flat part forming process even when the flat part does not exist in the heated object. The same effect can be expected.
  • the method for heating the object to be heated is such that the object to be heated is formed in a trapezoidal shape with a cross-sectional shape extending in a rod shape, and the flat surface forming step is a trapezoidal shape in the trapezoidal object to be heated.
  • a flat portion may be formed on the upper bottom surface.
  • the aluminum wheel manufacturing method specifically relates a table in which the magnetic poles of a plurality of magnets are arranged in a plane in the same direction, and a rod-shaped object to be heated, which is a raw material of the aluminum wheel, and the table.
  • a table driving means for rotationally driving the workpiece and a workpiece support for supporting the object to be heated in a state of being opposed to each magnet of the table, and the object to be heated and the table arranged to face each magnet are relatively
  • the heating method of the object to be heated includes a table in which the magnetic poles of a plurality of magnets are arranged in a plane in the same direction, and a table that relatively rotationally drives a plate-shaped or rod-shaped object to be heated and the table.
  • a driving means and a work support that supports the object to be heated in a state of being opposed to each magnet of the table, and the object to be heated and the table disposed to face each magnet are relatively rotationally displaced.
  • a method of heating an object to be heated using an electromagnetic induction heating apparatus that generates an induction current in the object to be heated and heats the object to be heated.
  • the heating method of the object to be heated can shorten and equalize the heating time as compared with the case where the other surface of the object to be heated is disposed opposite to each magnet.
  • the aluminum wheel manufacturing method specifically relates a table in which the magnetic poles of a plurality of magnets are arranged in a plane in the same direction, and a rod-shaped object to be heated, which is a raw material of the aluminum wheel, and the table.
  • a table driving means for rotationally driving the workpiece and a workpiece support for supporting the object to be heated in a state of being opposed to each magnet of the table, and the object to be heated and the table arranged to face each magnet are relatively
  • positioning process which arrange
  • FIG. 1 It is a perspective view which shows the outline of the external appearance structure of the to-be-heated target object for electromagnetic induction heating apparatuses which concerns on one Embodiment of this invention. It is a perspective view which shows the outline of the external appearance structure which looked at the to-be-heated object for electromagnetic induction heating apparatuses shown in FIG. 1 from the opposite side of illustration up-down direction. It is a front view which shows typically the structure of the electromagnetic induction heating apparatus which heat-processes the to-be-heated target object for electromagnetic induction heating apparatuses shown in FIG. 1 and FIG. It is a block diagram of the control system which controls the action
  • FIG. 1 It is a top view which shows the outline of the external appearance structure of the table provided with the magnet which comprises the electromagnetic induction heating apparatus shown in FIG.
  • FIG. 1 It is a flowchart which shows the process of the heat processing operation
  • FIG. 1 It is a perspective view which shows the outline of the external appearance structure of the to-be-heated object for electromagnetic induction heating apparatuses for verifying the effect of this invention, Comprising: The plane part is not formed in the bottom face is there.
  • FIG. 1 is a perspective view showing an outline of an external configuration of an object to be heated 100 according to the present invention.
  • 2 is a perspective view showing an outline of an external configuration of the object to be heated 100 when the object 100 to be heated shown in FIG. 1 is viewed from the opposite side in the illustrated vertical direction.
  • FIG. 1 is a perspective view showing an outline of an external configuration of an object to be heated 100 according to the present invention.
  • FIG. 3 is a front view schematically showing the structure of an electromagnetic induction heating device 200 that heats the object to be heated 100 shown in FIGS. 1 and 2.
  • FIG. 4 is a block diagram of a control system that controls the operation of the electromagnetic induction heating device 200.
  • the object to be heated 100 is a raw material of an aluminum product such as an aluminum wheel or an aluminum sash, and is an object to be heated by an electromagnetic induction heating device 200 described later in the manufacturing process of these products.
  • the object to be heated 100 is an object to be heated by the electromagnetic induction heating device 200, and is configured by forming an aluminum material into a rod shape. More specifically, the object to be heated 100 is formed in a trapezoidal cone shape as a whole in which the cross-sectional shape is formed in a trapezoidal shape.
  • the object to be heated 100 has a flat portion 101 formed on the surface (upper surface in FIG. 1) on the side that becomes the upper base in the trapezoidal shape.
  • the flat portion 101 is a portion that is disposed opposite to the magnet 203 of the electromagnetic induction heating device 200, and is formed in a plane parallel to the rotation surface of the magnet 203 and having a flatness of 5 mm or less.
  • the flatness is the magnitude of deviation from the geometrically correct plane of the planar feature, and when the surface to be measured is sandwiched between two parallel virtual planes, It is represented by the interval between two planes when the interval is the minimum.
  • This flatness can be measured with a dial gauge, an optical flat (planar gauge), or a measuring instrument using laser light.
  • the surface other than the flat surface portion 101 in the object 100 to be heated specifically, the four side surfaces 102 adjacent to the flat surface portion 101 and the bottom surface 103 opposite to the flat surface portion 101 are each formed in a substantially flat surface.
  • the object to be heated 100 is formed by casting an aluminum material. That is, the object 100 to be heated is an ingot. For this reason, the bottom surface 103 of the object to be heated 100 is formed such that the center part is recessed by so-called sink marks at the time of casting. Further, the length of the object 100 to be heated is longer than the diameter of the table 201.
  • the electromagnetic induction heating device 200 is a mechanical device for generating an induction current in the object 100 to be heated and heating it. Each device 230 is provided.
  • the table 201 is a part for holding a plurality of magnets 203 and is configured by a circular plate-like body (hereinafter also referred to as “disk body”) in a plan view. More specifically, the table 201 is formed with a plurality of bottomed holes for holding the magnet 203 in an exposed state on the plate surface (the upper surface in the drawing) of the disk body. Further, the table 201 is provided with a shaft body 201 a extending in a rod shape from the center of the bottom surface (the lower surface in the drawing) of the disk body toward the lower side in the drawing, and the shaft body 201 a is electrically driven through a coupling 202. The output shaft of the motor 204 is connected.
  • the table 201 is made of a paramagnetic material (for example, aluminum, manganese, platinum, or glass) or a diamagnetic material (for example, copper, gold, silver, zinc, lead, glass, or wood).
  • the table 201 is made of an aluminum disk.
  • a magnet 203 and a work support 221 to be described later are indicated by two-dot chain lines.
  • the magnet 203 is a part for generating an induced current in the object 100 to be heated, and is formed in a cylindrical shape.
  • a plurality of magnets 203 are provided on the plate surface of the table 201.
  • each magnet 203 is embedded in the table 201 in such a direction that the same magnetic poles (N poles in the present embodiment) are exposed on the plate surface side of the table 201.
  • Each magnet 203 is held in a state of being flush with the plate surface of the table 201.
  • the magnets 203 are arranged concentrically around the rotational drive center of the table 201 and are arranged at equal intervals along the circumferential direction of the concentric circles. In this case, the magnet 203 is formed outside the rotation drive center portion of the table 201. As described above, the reason why the magnet 203 is not disposed at the rotation drive center portion of the table 201 is that the rotation drive speed of the rotation drive center portion is low and the heating efficiency is low.
  • each magnet 203 may be held in a state of entering inside the plate surface of the table 201, or may be held in a state of protruding from the plate surface.
  • positioning aspect of each magnet 203 is suitably determined according to the specification of the heating of the to-be-heated target object 100, and is naturally not limited to this embodiment.
  • the neodymium magnet is used for the magnet 203 in this embodiment, magnets other than a neodymium magnet, for example, various magnets, such as a ferrite, samarium cobalt, or alnico, can be used.
  • the electric motor 204 is a drive source for rotationally driving the table 201, and is configured by a servo motor whose operation is controlled by a control device 230 described later.
  • the electric motor 204 is supported by the approach mechanism 210.
  • the approach mechanism 210 is a mechanical device for bringing the table 201 together with or away from the object to be heated 100 together with the electric motor 204, and mainly includes a motor support 211, a linear guide 212, and a guide support 213. And a drive mechanism 214.
  • the motor support 211 is a part for supporting the electric motor 204, and is configured by forming a metal material in an L shape.
  • the motor support 211 is supported by the drive mechanism 214 while being connected to the guide support 213 via the linear guide 212.
  • the linear guide 212 is a component for guiding the table 201 and the electric motor 204 in a direction in which the table 201 and the electric motor 204 are approached or separated from the object to be heated 100, and is provided on the rail provided on the guide support 213 and the motor support 211. And a slider that reciprocally displaces on the rail.
  • the guide support body 213 is a part for supporting the rails constituting the linear guide 212, and is configured by forming a metal material in an L shape. In this case, the guide support 213 is formed to extend along the guide direction so as to support the rail along the guide direction of the table 201 and the electric motor 204.
  • the guide support 213 is supported by the outer support 220.
  • the drive mechanism 214 is a mechanical device that includes a drive source for displacing the table 201 and the electric motor 204 in a direction in which the table 201 and the electric motor 204 approach or separate from the object to be heated 100.
  • the drive mechanism 214 includes an electric motor (not shown) (for example, an AC servo motor) whose operation is controlled by the control device 230, a jack that converts the rotational driving force of the electric motor in the vertical direction shown in the figure, and the jack on the outer support 220. It has the support stand which supports by each, and is comprised.
  • the outer support body 220 is a part for supporting the approach mechanism 210 and the work support body 221, and is configured by assembling metal rods in a box shape.
  • the outer support 220 is provided with a top plate made of a plate-like body in which a through-hole through which the shaft body 201a of the table 201 passes is formed at the upper end in the figure, and a work support 221 is provided on the top plate. It has been.
  • the workpiece support 221 is a part for supporting the object to be heated 100 on the table 201, and the outer support on the outer side of the table 201 so that the object to be heated 100 is laid on the plate surface of the table 201. 220 is provided on each.
  • the work support 221 is provided at a position that supports the object to be heated 100 at a position that is offset radially outward with respect to the rotational drive center portion on the plate surface of the table 201.
  • the workpiece support 221 is formed in a V shape in which both end portions are fitted from above so as to support both ends of the object 100 to be heated from below with the plane portion 101 facing downward.
  • the work support 221 is provided with a temperature detector 222.
  • the temperature detector 222 detects the temperature of the object to be heated 100 and outputs it to the control device 230.
  • the control device 230 is configured by a microcomputer including a CPU, a ROM, a RAM, and the like.
  • the control device 230 comprehensively controls the entire operation of the electromagnetic induction heating device 200, and a heating processing program (not shown) stored in advance in the storage device. Is performed to heat the object 100 to be heated.
  • the control device 230 controls the operation of the electric motor 204 to rotationally drive the table 201 and also controls the operation of the approach mechanism 210 to control the vertical position of the table 201 in the figure.
  • the control device 230 includes an input device composed of a switch group that receives an instruction from an operator and inputs the command to the control device 230, an operation lamp 231 provided with a display lamp that displays an operation status of the control device 230, and a liquid crystal display device. It has. Although the control device 230 includes a power supply unit that receives power from an external power supply and supplies power to each unit such as the electric motor 204 and the approach mechanism 210, the control device 230 is not directly related to the present invention. Omitted.
  • the control device 230 may be housed in a metal box and attached to the outer surface of the outer support 220, but may be provided at a position away from the outer support 220 via a wire. Good.
  • the control device 230 executes a control program (not shown) to control the operation of the approach mechanism 210 to lower the table 201 and position it at a position farthest from the object 100 to be heated.
  • the worker performs a work placement process for setting the object to be heated 100 on the electromagnetic induction heating device 200.
  • the worker places the object to be heated 100 on the work support 221 in the electromagnetic induction heating device 200.
  • the operator places both end portions of the object to be heated 100 on the work support 221 so that the flat portion 101 of the object to be heated 100 faces the table 201.
  • the workpiece support 221 is composed of two inclined surfaces that open upward in a V shape, the workpiece support 221 fits stably with the side surface 102 formed of the inclined surface of the object to be heated 100.
  • the object 100 to be heated can be supported.
  • the set operation of the object to be heated 100 may be performed manually by an operator, or a mechanical device such as a robot arm that holds the object to be heated 100 and places it on the work support 221 is used. May be.
  • the operator positions the magnet 203 with respect to the object 100 to be heated. Specifically, the operator operates the operation panel 231 to operate the approach mechanism 210 so that the plate surface of the table 201 is brought closest to the flat surface portion 101 of the object 100 to be heated. Position it. In this case, the electromagnetic induction heating device 200 can be positioned at a position close to the position immediately before the two are in contact with each other because the planar portion 101 of the object to be heated 100 is disposed oppositely.
  • the worker heats the object 100 to be heated.
  • the operator operates the operation panel 231 to instruct the control device 230 to execute the heat treatment program.
  • the control device 230 rotates the table 201 by operating the electric motor 204. Thereby, the to-be-heated target object 100 is rapidly heated by the induced current produced inside.
  • the inventors have the same configuration as that of the object to be heated 100, that is, the flat surface portion 101 is formed on the upper bottom surface and the flat surface portion 101 is formed on the bottom surface 103.
  • a heated object 110 having a shape in which the central portion is recessed without being formed, and a heated object 120 in which a flat surface portion 101 (flatness of 1 mm or less) is formed on the bottom surface 103 of the heated object 100, respectively.
  • Several sets were prepared. Each of the object to be heated 110 and the object to be heated 120 is 5 kg.
  • the worker heats the object to be heated 110 and the object to be heated 120 when each bottom surface 103 is disposed opposite the table 201 and heated under the same conditions. And the relationship between the heating time and the heating time.
  • the horizontal axis is the time since the rotation of the table 201 is started, and the vertical axis is the temperature of the object 100 to be heated.
  • the heated object 120 in which the flat surface portion 101 according to the present invention is disposed to face the magnet 203 is arranged so that the flat surface portion 101 according to the present invention is disposed on the opposite side of the magnet 203.
  • the object 120 to be heated reaches 400 ° C. in approximately 141 seconds after starting to rotate the table 201 and is heated to 500 ° C. in approximately 221 seconds.
  • the object to be heated 110 reached 400 ° C. in about 481 seconds after starting to rotate the table 201, and did not reach 500 ° C. even after 601 seconds.
  • the worker stops heating the object 100 to be heated and removes it from the electromagnetic induction heating device 200.
  • the operator operates the operation panel 231 to instruct the control device 230 to stop executing the heat treatment program.
  • the control device 230 stops the rotation drive of the table 201 by stopping the operation of the electric motor 204. Thereby, the worker can take out the object 100 to be heated on the workpiece support 221.
  • the operator confirms the temperature of the object 100 to be heated displayed on the operation panel 231 and confirms that the object 100 to be heated has reached a predetermined temperature. Can do.
  • the operator experimentally obtains a time until the object 100 to be heated reaches a predetermined temperature in advance, and the object 100 to be heated has reached a predetermined temperature depending on whether or not the predetermined time has elapsed. You can also grasp that.
  • the control device 230 can automatically stop the operation of the electric motor 204 when the predetermined temperature is reached or when the predetermined time has elapsed.
  • the work to take out the object 100 to be heated may be performed manually by an operator, or a mechanical device such as a robot arm that holds the object 100 to be heated and carries it out from the work support 221 may be used. Good.
  • the worker puts the object 100 to be heated taken out from the electromagnetic induction heating device 200 into the melting furnace, and then pours the object 100 to be heated into a mold to form a molded product such as an aluminum wheel. Since the process of processing the object 100 to be heated taken out from the electromagnetic induction heating apparatus 200 is not directly related to the present invention, the description thereof is omitted.
  • the object to be heated 100 used in the electromagnetic induction heating device 200 is such that the portion of the table 201 that faces each magnet 203 is the rotation surface of each magnet 203. Since the flat portion 101 having a plane parallel to the surface and having a flatness of 5 mm or less is formed, the heating time of the object to be heated 100 can be shortened and the heating time can be made uniform. .
  • the implementation of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the object of the present invention.
  • subjected to the to-be-heated target object 100 is attached
  • the object to be heated 100 is formed by forming the flat portion 101 on the surface that is the upper bottom of the object to be heated 100 having a trapezoidal cross section (the upper surface in FIG. 1). .
  • the flat part 101 should just be formed in the surface which can be opposingly arranged to the magnet 203 provided in the table 201 in the to-be-heated target object 100.
  • FIG. Therefore, the plane portion 101 can be formed on each of the side surface 102 and the bottom surface 103 of the object to be heated 100.
  • the to-be-heated target object 100 is the whole surface of the surface (upper surface in FIG. 1) used as the upper bottom in the to-be-heated target object 100 in which the plane part 101 formed the trapezoidal shape in cross section. Formed.
  • the flat part 101 should just be formed in the surface which can be opposingly arranged to the magnet 203 provided in the table 201 in the to-be-heated target object 100.
  • the rotational speed of the central portion of the rotational drive of the table 201 is slower than the radially outer side. For this reason, the to-be-heated target object 100 has a relatively low heating effect at a portion disposed opposite to the central portion of the table 201 for rotational driving.
  • the object 100 to be heated does not form the flat portion 101 for the portion disposed opposite to the central portion of the rotational drive of the table 201 and has a flatness lower than the flatness of the flat portion 101.
  • the rough portion 104 can be formed in advance, and the flat portion 101 can be formed outside the rough portion 104. According to this, the object 100 to be heated can reduce the processing burden on the flat surface portion 101 and can be used as a space for marking the lot number or manufacturer name of the object 100 to be heated on the rough portion 104.
  • the flat portion 101 formed outside the rough portion 104 is indicated by hatching in order to clarify the difference between the rough portion 104 and the flat portion 101.
  • the object to be heated 100 is formed in a trapezoidal cone shape having a trapezoidal cross section.
  • the object to be heated 100 only needs to be formed in a shape that can be disposed opposite to the magnet 203 provided on the table 201 in the object to be heated 100. Therefore, the to-be-heated object 100 can be constituted by a flat plate-like body in addition to a rod-like body having a cross-sectional shape of a square or a polygon such as a triangle.
  • the object to be heated 100 may have a flat surface portion 101 formed on at least a part of the outer surface.
  • the table 201 is defined as a part having the highest flatness in the outer surface of the object 100 to be heated.
  • the object 100 to be heated is heated before the object 100 is heated by the electromagnetic induction heating device 200 as shown in FIG.
  • a plane portion forming step of forming the plane portion 101 on at least a part of the outer surface of the substrate can be performed.
  • the flat surface portion forming step is performed by performing various kinds of machining such as cutting, forging or rolling on at least a part of the outer surface of the object 100 to be heated on which the flat surface 101 is not formed.
  • the portion 101 may be formed.
  • the object to be heated 100 is composed of an ingot as a raw material for an aluminum product such as an aluminum wheel or an aluminum sash.
  • the object to be heated 100 may be an ingot as a raw material of various products other than an aluminum wheel or an aluminum sash (for example, an aluminum cylinder block).
  • the object to be heated 100 is a paramagnetic material other than an aluminum material (for example, aluminum, manganese, platinum, or glass) or a diamagnetic material (for example, copper, gold, silver, zinc, lead, glass, or wood). It can also be comprised with the material of.
  • the object to be heated 100 may be a semi-finished product obtained by processing a raw material before reaching a finished product such as an aluminum wheel or an aluminum sash.
  • a finished product such as an aluminum wheel or an aluminum sash.
  • the flatness of the portion of the semi-finished product that faces the magnet 203 is preferably 5 mm or less.
  • the table 201 is formed in a disc shape.
  • the table 201 may be formed in a shape other than a circle (including an ellipse) in a plan view, for example, a polygonal shape such as a square, a triangle, or a hexagon.
  • the flat part 101 should just be formed in the plane parallel to the rotating surface which the table 201 or the magnet 203 rotationally drives, and flatness is 5 mm or less.
  • the electromagnetic induction heating device 200 is configured such that the table 201 is rotationally driven with respect to the object 100 to be heated. That is, the electric motor 204 corresponds to the table driving means according to the present invention.
  • the electromagnetic induction heating device 200 only needs to be configured such that the table 201 rotates relative to the object 100 to be heated. Therefore, the electromagnetic induction heating device 200 can also be configured by providing table driving means so that the object to be heated 100 is rotationally driven with respect to the table 201.
  • the flatness of the flat portion 101 is 5 mm or less.
  • the flatness increases as the gap amount decreases, and the heating time of the object 100 to be heated can be shortened and the heating time can be made uniform. Therefore, the flatness in the flat portion 101 is preferably 3 mm or less, more preferably 1 mm or less.
  • the workpiece support 221 has a V-shaped cross section into which the heated object 100 formed in a trapezoidal cone shape is fitted from above.
  • the workpiece support body should just be comprised so that the to-be-heated target object 100 may be detachably supported. Therefore, the workpiece support 221 may further include a clamp mechanism that presses the object to be heated from above or from the side while the object 100 to be heated is placed. Further, the workpiece support 221 can be configured to support the object to be heated 100 while moving on the table 201 like a belt conveyor.
  • DESCRIPTION OF SYMBOLS 100 ... Object to be heated, 101 ... Plane part, 102 ... Side face, 103 ... Bottom face, 104 ... Rough part, 110 ... object to be heated, 120 ... object to be heated, DESCRIPTION OF SYMBOLS 200 ... Electromagnetic induction heating apparatus, 201 ... Table, 201a ... Shaft body, 202 ... Coupling, 203 ... Magnet, 204 ... Electric motor, 210 ... approach mechanism, 211 ... motor support, 212 ... linear guide, 213 ... guide support, 214 ... drive mechanism, 220 ... outer support, 221 ... work support, 222 ... temperature detector, 230: Control device, 231: Operation panel.

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  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

La présente invention concerne un objet à chauffer pour un dispositif de chauffe par induction électromagnétique, un procédé pour chauffer l'objet à chauffer, et un procédé de fabrication de feuille d'aluminium, caractérisés en ce que le temps de chauffe peut être réduit ou uniformisé. L'objet 100 à chauffer, qui doit être chauffé par le dispositif de chauffe par induction électromagnétique 200, est façonné sous la forme globale d'un cône trapézoïdal tronqué présentant une section transversale trapézoïdale. L'objet 100 à chauffer comprend une partie plane 101 sur une surface du côté tenant lieu de face supérieure de la forme trapézoïdale. La partie plane 101 est une partie disposée de manière à faire face à un aimant 203 du dispositif de chauffe par induction électromagnétique 200, est un plan parallèle à la surface rotative de l'aimant 203, et est formée de manière à présenter une planéité ne dépassant pas 5 mm. Dans l'objet 100 à chauffer, quatre surfaces latérales 102, qui sont des surfaces autres que la partie plane 101 et sont adjacentes à la partie plane 101, et une surface inférieure 103 sur le côté opposé à la partie plane 101, sont formées chacune dans un plan approximatif. L'objet 100 à chauffer est formé par moulage d'un matériau en aluminium.
PCT/JP2019/022603 2018-06-14 2019-06-06 Objet à chauffer pour dispositif de chauffe par induction électromagnétique, procédé pour chauffer l'objet à chauffer, et procédé de fabrication de feuille d'aluminium WO2019240014A1 (fr)

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JP2018113349A JP6515396B1 (ja) 2018-06-14 2018-06-14 電磁誘導加熱装置用の被加熱対象物、被加熱対象物の加熱方法およびアルミホイールの製造方法
JP2018-113349 2018-06-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009048049A1 (fr) * 2007-10-09 2009-04-16 Tsugumitsu Matsui Dispositif de chauffage du type à induction électromagnétique, dispositif de génération de souffle chaud, et dispositif de génération de puissance
JP2012104223A (ja) * 2009-04-04 2012-05-31 Crew Kenkyusho Co Ltd 永久磁石式渦電流加熱装置
JP2018018604A (ja) * 2016-07-25 2018-02-01 Tsk株式会社 電磁誘導加熱装置および軽合金ホイール製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009048049A1 (fr) * 2007-10-09 2009-04-16 Tsugumitsu Matsui Dispositif de chauffage du type à induction électromagnétique, dispositif de génération de souffle chaud, et dispositif de génération de puissance
JP2012104223A (ja) * 2009-04-04 2012-05-31 Crew Kenkyusho Co Ltd 永久磁石式渦電流加熱装置
JP2018018604A (ja) * 2016-07-25 2018-02-01 Tsk株式会社 電磁誘導加熱装置および軽合金ホイール製造方法

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