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WO2014061473A1 - Dispositif de chauffage résistif - Google Patents

Dispositif de chauffage résistif Download PDF

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Publication number
WO2014061473A1
WO2014061473A1 PCT/JP2013/077108 JP2013077108W WO2014061473A1 WO 2014061473 A1 WO2014061473 A1 WO 2014061473A1 JP 2013077108 W JP2013077108 W JP 2013077108W WO 2014061473 A1 WO2014061473 A1 WO 2014061473A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
steel plate
insulating block
insulating
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/077108
Other languages
English (en)
Japanese (ja)
Inventor
下津　晃治
幸弘 次田
勝志 大住
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asteer Co Ltd
Original Assignee
Asteer Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asteer Co Ltd filed Critical Asteer Co Ltd
Priority to JP2014542052A priority Critical patent/JPWO2014061473A1/ja
Publication of WO2014061473A1 publication Critical patent/WO2014061473A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/40—Direct resistance heating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0014—Devices wherein the heating current flows through particular resistances
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H05B3/08—Heater elements structurally combined with coupling elements or holders having electric connections specially adapted for high temperatures

Definitions

  • the present invention is an energization heating device used when hot pressing a steel plate.
  • an electric heating device is used as one of means for heating the steel plate.
  • a steel plate is disposed between a plurality of electrodes, and the steel plate is heated by energizing between the electrodes. After heating, the steel sheet is brought into contact with a pressing mold and rapidly cooled. This heat treatment is called quenching. Quenching increases the hardness of the steel.
  • Patent Document 1 describes that an upper electrode (reference numeral 5) and a lower electrode (reference numeral 1) constitute one electrode unit.
  • the electrode unit is energized in a state where it is disposed at both ends of the steel plate (FIG. 1 and the like). It is described that energization is stopped by lowering the lower electrode with a cylinder (reference numeral 2) and separating the steel plate from the upper electrode.
  • Patent Document 2 also describes that an upper electrode (reference numeral 4) and a lower electrode (reference numeral 5) constitute one electrode unit.
  • the upper electrode is lowered by a load device (reference numeral 9).
  • the elastic member 3 is arranged on the electrode support member, so that the electrode can be uniformly contacted with the steel plate. It is described that when the electrode and the steel plate cannot be uniformly contacted, it causes local overheating in the steel plate.
  • Patent Document 3 also describes that an upper electrode (reference numerals 51 and 52) and a lower electrode (reference numerals 51 and 52) constitute one electrode unit.
  • an upper electrode reference numerals 51 and 52
  • a lower electrode reference numerals 51 and 52
  • the upper and lower electrodes move to prevent the generation of wrinkles.
  • the upper electrode and the lower electrode constitute one electrode unit, and the steel plate is heated by energizing between a pair of left and right electrode units.
  • the present inventors have a configuration in which a steel sheet is sandwiched and fixed between an upper electrode and a lower electrode, which are generally used in the past. It has been found that the temperature of other portions of the steel sheet is locally reduced. That is, as shown in FIG. 12, since the voltage is applied to the upper electrode and the lower electrode by branching the power supply line from the same power source, the potential of the upper electrode and the lower electrode is theoretically Is the same. However, in reality, a slight potential difference is unavoidable.
  • both of the electrode units that are in contact with the steel plate are electrodes. That is, since an electric circuit and a power supply line for supplying power to the electrode are always connected to the electrode, the weight of the electrode increases and the electrode becomes large. After heating the steel plate with the electric heating device, at least one of the upper and lower electrodes is raised or lowered to remove the steel plate. At this time, if the upper and lower electrodes are heavy and bulky, the efficiency of the quenching operation is lowered. Furthermore, actuators such as hydraulic cylinders that move the upper and lower electrodes must improve the output according to the weight of the electrodes, which increases the manufacturing cost and the maintenance cost of the apparatus.
  • An object of the present invention is to solve the problem caused by the stray current and to provide a light-weight and simple configuration energization heating apparatus.
  • the present invention is a steel sheet energization heating device (hereinafter sometimes simply referred to as a device) having a plurality of electrode units each composed of an electrode for supplying a current to a steel plate and at least one insulating block.
  • a steel sheet energization heating device (hereinafter sometimes simply referred to as a device) having a plurality of electrode units each composed of an electrode for supplying a current to a steel plate and at least one insulating block.
  • One part of the steel sheet is sandwiched between an electrode constituting one of the plurality of electrode units and the insulating block.
  • the other part of the steel plate is sandwiched between an electrode constituting the other of the plurality of electrode units and the insulating block.
  • the steel plate is heated by energizing between one and the other electrode unit.
  • the steel plate is sandwiched between the electrode and the insulating block, there is no possibility that stray current is generated. Since the steel plate is sandwiched between the electrode and the insulating block, it is firmly held during heating. Since the insulating block is used instead of the electrode, the area where the steel plate and the electrode are in contact decreases, but this can be ignored. For example, when electrodes are connected to the front sides of the left and right ends of the steel plate and insulating blocks are connected to the back sides of the left and right ends, the current flows mainly on the front side of the steel plate. The heat generated by energization is uniformly and quickly transmitted to the back side of the steel plate, so no problem occurs. For example, the electrode may be connected from the back side on the left side of the steel plate, and the electrode may be connected from the front side on the right side of the steel plate. In this case, an insulating block is brought into contact with the left surface and the right back surface.
  • Each electrode unit is provided with an actuator, the position of the electrode for supplying current to the steel plate is fixed in the vertical direction, and the insulating block is preferably configured to approach or separate from the electrode by the actuator. . If the position of the electrode is fixed in the vertical direction, it is not necessary to move a power supply line or an electric circuit associated with the electrode, so that work efficiency is improved.
  • the electrode may be configured to be movable in the left-right direction according to the width of the steel plate.
  • the actuator include a hydraulic cylinder and a pneumatic cylinder. If the rod is moved linearly by hydraulic pressure or air pressure and an insulating block is arranged at the tip of the rod, the insulating block can be moved in conjunction with the rod.
  • each electrode unit is provided with an actuator, the position of the electrode for supplying current to the steel plate is fixed in the vertical direction, the electrode supports the steel plate from below, and the insulating block is attached to the electrode by the actuator. On the other hand, it is configured to approach or leave from above. In this case, the steel plate is suspended between the electrodes and energized in a state where the steel plate and the electrode are brought into close contact with each other so as to be pressed from above with an insulating block.
  • the electrode unit When quenching a plurality of steel plates at a time, the electrode unit may be configured as follows. That is, each electrode unit is composed of one electrode for supplying a current to the steel plate and a plurality of insulating blocks, and an actuator is arranged independently on each of the plurality of insulating blocks. In this case, one part of the plurality of steel plates is sandwiched between a plurality of insulating blocks constituting one of the plurality of electrode units and one electrode, and the other part of the plurality of steel plates is sandwiched between the other of the plurality of electrode units. It is sandwiched between a plurality of insulating blocks and one electrode. If it is within the range of the length of the electrode in the longitudinal direction, a single wide steel plate can be heated instead of a plurality of steel plates.
  • Each electrode unit preferably includes an elastic member between the insulating block and the actuator.
  • the insulating block has a function of pressing the steel plate against the electrode. However, when the insulating block is pressed against the steel plate using an actuator, the pressing force may be excessive or a load may be applied locally. If an elastic member is arrange
  • the elastic member include a coil spring, a leaf spring, and an elastomer block. The elastic member is disposed so as to expand and contract with respect to the moving direction of the insulating block.
  • an insulating block forms an insulating layer in the surface facing the steel plate of a block main body.
  • the entire block may be made of an insulating material, the manufacturing cost increases because the insulating material is expensive.
  • the block main body since the material of the block main body does not necessarily need to be an insulating material, the block main body can be configured from an inexpensive material. Thereby, the manufacturing cost of an apparatus can be reduced.
  • an insulating layer By covering the block body with an elastic insulator, an insulating layer can be formed on the surface of the block body facing the steel plate.
  • a steel plate is sandwiched and fixed between the electrode constituting the electrode unit and the insulating block. Since no current passes from the electrode to the insulating block, it is possible to suppress the occurrence of stray current. By suppressing the generation of stray current, the steel sheet can be heated uniformly.
  • the device configuration can be simplified and the working efficiency can be improved.
  • each electrode unit is composed of one electrode and a plurality of insulating blocks, and an actuator is arranged independently for each insulating block, the insulating block is independently approached or separated from one electrode. It becomes possible to do. If it does in this way, it is also possible to heat a some steel plate at once, and it is possible to heat the steel plate of various widths.
  • FIG. 1 It is a perspective view which shows a mode that the steel plate is heated using an example (Example 1) of the electricity heating apparatus of this invention. It is a side view of the electric heating apparatus of FIG. It is a perspective view showing a mode that a steel plate is carried in to the electric heating apparatus of FIG. It is a perspective view showing a mode that a steel plate is carried out from the electric heating apparatus of FIG. It is a side view showing a mode that the electric heating apparatus which concerns on another Example (Example 2) is used. It is a side view showing a mode that the electric heating apparatus of another Example (Example 3) is used. It is a side view showing a mode that the electric heating apparatus of another Example (Example 4) is used.
  • Example 5 It is a side view showing a mode that the electric heating apparatus of another Example (Example 5) is used. It is a perspective view showing a mode that several sheets of steel plates are heated using the electric heating apparatus of another Example (Example 6). It is a perspective view showing a mode that one wide steel plate is heated using the electric heating apparatus of another Example (Example 6). It is the side view which showed typically the stray current produced by the clearance gap between an electrode and a steel plate. It is a side view showing a mode that the electric heating apparatus of a comparative example is used. It is a schematic diagram which shows the external appearance of the steel plate heated and cooled using the electric heating apparatus of Example 5. FIG. It is a schematic diagram which shows the external appearance of the steel plate heated and cooled using the electrical heating apparatus of a comparative example.
  • FIG. 1 to 4 show an example (Embodiment 1) of the electric heating apparatus of the present invention.
  • 5 to 10 show apparatuses according to the second to sixth embodiments.
  • the electric heating device 1 of Example 1 is composed of a pair of left and right electrodes.
  • Each electrode unit is composed of one electrode 11 and one insulating block 12.
  • the electrode 11 is disposed on the lower side and does not move in the vertical direction, but can be moved in the horizontal direction according to the length of the steel plate 2.
  • the insulating block 12 is disposed on the upper side, and approaches or leaves the electrode 11 from above by an actuator.
  • the left end of the steel plate 2 is sandwiched between a lower electrode 11 and an upper insulating block 12 constituting one of a pair of left and right electrode units.
  • the right end of the steel plate 2 is sandwiched between the lower electrode 11 and the upper insulating block 12 constituting the other of the pair of left and right electrode units.
  • the power source 113 is connected only to the lower electrode 11 via the feeder line 112.
  • the electrode 11 is a rectangular parallelepiped block having an electric circuit (not shown) therein, and the upper surface of the block, that is, the electrode surface is made of a copper plate.
  • a current 3 is supplied with the copper plate of the electrode 11 in contact with the back surface of the steel plate 2.
  • the weight of the lower electrode 11 in Example 1 is about 20 kg per piece.
  • the length in the longitudinal direction of the electrode 11 is set longer than the width of the steel plate 2 to be heated.
  • a material having low heat resistance and low resistance during energization may be used. Examples of such materials include copper and silver.
  • the electrode 11 is fixed on a base 111 formed of a nonconductive material.
  • the base 111 is a rectangular parallelepiped that is slightly larger than the electrode so that the electrode can be stably supported.
  • the base 111 is required to have insulating properties and heat insulating properties.
  • the base 111 was formed of ceramic.
  • the insulating block 112 is obtained by forming an insulating layer 121 on the lower surface of a rectangular parallelepiped block main body 122 as shown in FIG.
  • the length of the insulating block 112 is set to be longer than the width of the steel plate 2.
  • three coil springs 123 and a plate 124 for attaching the coil springs 123 are provided on the upper side of the insulating block 112.
  • the tip of the rod 125 of the hydraulic cylinder is connected to the central portion of the plate 124 in the longitudinal direction.
  • the base end of the rod 125 is connected to a hydraulic cylinder.
  • the rod 125 moves up and down in response to the hydraulic pressure. That is, the hydraulic cylinder and rod 125 function as an actuator.
  • the insulating block 112 preferably has a heat insulating property in addition to an electric insulating property.
  • the main body 122 of the insulating block is formed of stainless steel, and the insulating layer 121 is made of ceramic having excellent heat insulating properties.
  • the insulating layer 121 an elastic insulator having heat resistance described later may be used.
  • the block body 122 may be made of iron in order to finish it at a lower cost.
  • the insulating block 12, the coil spring 123, and the plate 124 are moved up and down by the expansion and contraction of the rod 125.
  • the rod 125 is contracted to separate the insulating block 12 from the left and right electrodes 11, and the steel plate 2 is placed on the left and right electrodes 11.
  • the rod 125 is extended to bring the insulating layer 121 of the insulating block 12 into contact with the steel plate 2.
  • the rod 125 is further extended to compress the coil spring 123, and the steel plate 2 is evenly pressed by the repulsive force of the coil spring 123. Thereby, the steel plate 2 and the electrode 11 are closely adhered without a gap.
  • the electrode 11 of Example 2 shown in FIG. 5 has a semicircular cross section, and this cross-sectional shape is continuous in the longitudinal direction of the electrode 11.
  • the electrode 11 of Example 3 shown in FIG. 6 has a triangular cross section, and this cross sectional shape is continuous in the longitudinal direction of the electrode. In the apparatus of Example 2 and Example 3, since the contact point between the electrode 11 and the steel plate 2 is a line, there is no gap between the electrode 11 and the steel plate 2.
  • the apparatus 1 of Examples 2 to 4 has the same configuration as that of the apparatus 1 of Example 1 except for the shape of the electrode 11.
  • the apparatus 1 of Example 5 of FIG. 8 is demonstrated.
  • the apparatus of the fifth embodiment has the same apparatus configuration as that of the apparatus 1 of the fourth embodiment shown in FIG. 7 except that the configuration of the insulating block 12 is different.
  • the insulating block 12 according to the fifth embodiment covers the block main body 122 made of iron or stainless steel with an elastic insulator 126 having heat resistance, so that the insulating layer 121 is provided on the surface of the block main body 122 facing the steel plate 2. Forming. Since the elastic insulator 126 can be in close contact with the steel plate 2 without a gap, the steel plate 2 can be pressed against the electrode 11 without a gap as compared with a hard material such as ceramics.
  • the block main body 122 is configured such that cracks are not generated from the corners by chamfering the corners.
  • a heat resistant cloth can be suitably used.
  • the heat-resistant cloth for example, a nonwoven fabric obtained by needle punching heat-resistant fibers such as glass wool mat, ceramic blanket, rock wool or the like can be used.
  • the apparatus 1 of Example 6 includes a pair of left and right electrode units. Each electrode unit is composed of one electrode 11 and two insulating blocks 12. The number of insulating blocks 12 may be increased according to the number of steel plates 2 placed on the device 2. Since the two insulating blocks 12 are provided with rods 125 connected to the hydraulic cylinders independently as actuators, the insulating blocks 12 are connected to the electrodes 11 for each steel plate 2 as shown in FIG. Can be approached or separated from each other. Therefore, a plurality of steel plates 2 can be heated together and can be heated every predetermined number. That is, it can cope with both mass production and small production. Further, as shown in FIG. 10, a single wide steel plate 2 can be heated.
  • the apparatus 1 can be used for quenching various parts.
  • the number of the insulating blocks 112 is two. However, if the width of each insulating block 112 is reduced and the number thereof is increased, the steel plates 2 and the electrodes 11 having various widths are provided. It becomes possible to make it adhere more reliably. Further, if the electrode 11 is made longer and the number of the insulating blocks 12 is increased, the wide steel plate 2 can be brought into close contact.
  • the electrode 11 is connected to a power source 113 via a feeder line 112.
  • the configuration of the insulating block 12 and the shape of the electrode 11 can be changed as in the first to fifth embodiments.
  • the number of coil springs 123 may be changed as appropriate.
  • the length of the electrode 11 is longer than those in Examples 1 to 5, but can be heated without any problem.
  • one electrode 11 includes one power supply line 112 and one electric circuit. That is, since it is not necessary to prepare a plurality of feeder lines and a plurality of electric circuits for each steel plate 2 to be heated, the apparatus configuration can be simplified and the weight per electrode can be reduced.
  • Example 5 using the apparatus of Example 5 (FIG. 8) and the apparatus of FIG. 12, steel sheets corresponding to German Industrial Standard 22MnB5 were quenched.
  • the steel sheet has a transformation start temperature (AC1) of 810 ° C. to 840 ° C. and a transformation completion temperature (AC 3) of 850 ° C.
  • AC1 transformation start temperature
  • AC 3 transformation completion temperature
  • Two steel plates having the same thickness, width, and length are prepared and heated by the apparatus of Example 5 and FIG.
  • a block body 122 prepared by chamfering a corner of a stainless steel block as an insulating block and wrapped with a glass wool mat having a thickness of 5 mm was used.
  • the steel plate was fixed in close contact with the lower electrode so that a pressure of 4 kN was applied to the left and right ends of the steel plate from above the steel plate via rods and coil springs of a hydraulic cylinder.
  • the steel plate was fixed by sticking the steel plate to the lower electrode so that the pressure of 4 kN was applied from the upper side to the left and right ends of the steel plate from above.
  • FIG. 13 shows one end portion of a steel plate heated by the apparatus of Example 5.
  • the upward direction in the figure is the central direction of the steel sheet.
  • the electrode was contacted along the broken line at the lower end of the steel plate.
  • the hatched portion 41 did not change in color with the raw steel plate before heating.
  • the portion 42 with wide hatching has a slightly yellowish color due to quenching. This yellow color is due to the steel plate being burnt, and indicates that it has been uniformly hardened.
  • the steel plate heated using the apparatus of Example 5 was uniformly colored yellowish except for both ends contacting the electrodes.
  • the temperature of the portion 41 that turned yellow during the heating of the steel sheet was measured, it was confirmed that the temperature was about 870 ° C., which exceeds the transformation completion temperature (AC3).
  • FIG. 14 shows one end portion of the steel plate heated by the apparatus of FIG.
  • the electrode was installed along the broken line at the lower end of the steel plate. Even when heated by the apparatus of FIG. 12, in the region where the electrode was in contact, there was no change in color and color of the raw steel plate, and it was confirmed that this region was not quenched. However, it was confirmed that a black portion 43, a portion 44 changed from yellow to brown, and a portion 45 having the same color as the raw steel plate appeared around the electrode. In FIG. 13, the black portion 43 is painted black, and the portion 44 is cross-hatched. The black portion 43 was generated because the steel plate was excessively heated and the steel plate was burnt.
  • the yellow to brown portion 44 is a portion that is not heated as much as the black portion 43 but is too heated and burnt.
  • a portion 44 having the same color as that of the raw steel plate is a portion where heating is insufficient. As is clear from FIG. 13, it was confirmed that there were a mixture of a part that was heated too much and a part that was insufficiently heated around the electrode.
  • the steel plate heated as described above was quickly conveyed to a press machine without being cooled, and heat was removed while forming with a press die to produce a door beam.
  • strength over the whole beam was able to be manufactured.
  • the strength of both ends of the beam is not uniform in the door beam using the steel plate heated by the apparatus of FIG. 12, and when the stress concentrates around the both ends, it easily deforms and exhibits the expected performance. I could't. Then, although the both ends of the steel plate were cut
  • Electric heating device 11
  • Electrode 11
  • Feed line 11
  • Power supply 12
  • Insulating block 121
  • Insulating layer 122
  • Coil spring 124
  • Plate 125
  • Rod (actuator) 2
  • Steel plate 3
  • Current 31 Stray current

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

La présente invention vise à empêcher une surchauffe localisée dans une tôle d'acier et des baisses de température localisées dans d'autres parties de la tôle d'acier en raison de la génération de courants parasites, et à produire un dispositif de chauffage résistif qui est léger et présente une configuration de dispositif simple. En outre, la présente invention vise à produire un dispositif de chauffage résistif qui peut chauffer de façon uniforme une pluralité de tôles d'acier en même temps. Le dispositif de chauffage résistif pour tôles d'acier possède une pluralité d'unités d'électrode comprenant au moins un bloc isolant (12), et une électrode (11) qui apporte un courant (3) à une tôle d'acier (2). Le dispositif de chauffage résistif pour tôles d'acier est caractérisé par une partie de la tôle d'acier coincée par l'électrode et le bloc isolant formant une unité de la pluralité d'unités d'électrode, par une autre partie de la tôle d'acier coincée par l'électrode et le bloc isolant formant une autre unité de la pluralité d'unités d'électrode, et par un courant apporté entre la première et l'autre unité d'électrode lorsque la tôle d'acier est immobilisée par les blocs isolants et les électrodes.
PCT/JP2013/077108 2012-10-18 2013-10-04 Dispositif de chauffage résistif Ceased WO2014061473A1 (fr)

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JP2014542052A JPWO2014061473A1 (ja) 2012-10-18 2013-10-04 通電加熱装置

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JP2012230674 2012-10-18
JP2012-230674 2012-10-18

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Cited By (9)

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CN104588521A (zh) * 2014-12-19 2015-05-06 北京卫星制造厂 一种采用柔性夹持的电流辅助热成形设备及方法
JP2015149257A (ja) * 2014-02-10 2015-08-20 新日鐵住金株式会社 通電加熱用電極及びこれを用いた鋼板の通電加熱方法
WO2016017147A1 (fr) * 2014-07-28 2016-02-04 Neturen Co., Ltd. Procédé de chauffage direct par résistance et procédé de fabrication de produit moulé par compression
WO2016158778A1 (fr) * 2015-03-31 2016-10-06 住友重機械工業株式会社 Dispositif de moulage
JP2017045656A (ja) * 2015-08-27 2017-03-02 トヨタ自動車株式会社 通電加熱装置
KR101833850B1 (ko) * 2016-04-05 2018-03-02 엠디티 주식회사 강판소재 저항가열장치
KR20180039921A (ko) * 2016-10-11 2018-04-19 주식회사 엠에스 오토텍 핫스탬핑용 블랭크 가열장치 및 방법
CN112385091A (zh) * 2018-06-28 2021-02-19 势必锐航空系统有限公司 采用有源热缓冲元件以改善焦耳加热的系统和方法
CN113573824A (zh) * 2019-03-27 2021-10-29 住友重机械工业株式会社 成型装置及成型方法

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WO2009075134A1 (fr) * 2007-12-13 2009-06-18 Aisin Takaoka Co., Ltd. Dispositif de chauffage par excitation, dispositif de pressage à chaud comportant un tel dispositif de chauffage, et procédé de chauffage par conduction
JP2011183441A (ja) * 2010-03-10 2011-09-22 Shiroki Corp プレス成形法
JP2012149333A (ja) * 2010-12-27 2012-08-09 Daihatsu Motor Co Ltd 焼入れ装置

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WO2016017147A1 (fr) * 2014-07-28 2016-02-04 Neturen Co., Ltd. Procédé de chauffage direct par résistance et procédé de fabrication de produit moulé par compression
US10259028B2 (en) 2014-07-28 2019-04-16 Neturen Co., Ltd. Direct resistance heating method and press-molded product manufacturing method
CN104588521A (zh) * 2014-12-19 2015-05-06 北京卫星制造厂 一种采用柔性夹持的电流辅助热成形设备及方法
JP2016190247A (ja) * 2015-03-31 2016-11-10 住友重機械工業株式会社 成形装置
CN107427892A (zh) * 2015-03-31 2017-12-01 住友重机械工业株式会社 成型装置
KR20170132750A (ko) * 2015-03-31 2017-12-04 스미도모쥬기가이고교 가부시키가이샤 성형장치
US20180015519A1 (en) * 2015-03-31 2018-01-18 Sumitomo Heavy Industries, Ltd. Forming device
US10967413B2 (en) 2015-03-31 2021-04-06 Sumitomo Heavy Industries, Ltd. Forming device
KR102362771B1 (ko) * 2015-03-31 2022-02-15 스미도모쥬기가이고교 가부시키가이샤 성형장치
WO2016158778A1 (fr) * 2015-03-31 2016-10-06 住友重機械工業株式会社 Dispositif de moulage
CN110014066A (zh) * 2015-03-31 2019-07-16 住友重机械工业株式会社 成型装置
EP3520920A1 (fr) * 2015-03-31 2019-08-07 Sumitomo Heavy Industries, Ltd. Dispositif de formage
CN110014066B (zh) * 2015-03-31 2021-07-30 住友重机械工业株式会社 成型装置
JP2017045656A (ja) * 2015-08-27 2017-03-02 トヨタ自動車株式会社 通電加熱装置
KR101833850B1 (ko) * 2016-04-05 2018-03-02 엠디티 주식회사 강판소재 저항가열장치
KR20180039921A (ko) * 2016-10-11 2018-04-19 주식회사 엠에스 오토텍 핫스탬핑용 블랭크 가열장치 및 방법
KR101904839B1 (ko) 2016-10-11 2018-10-05 주식회사 엠에스 오토텍 핫스탬핑용 블랭크 가열장치 및 방법
CN112385091A (zh) * 2018-06-28 2021-02-19 势必锐航空系统有限公司 采用有源热缓冲元件以改善焦耳加热的系统和方法
CN113573824A (zh) * 2019-03-27 2021-10-29 住友重机械工业株式会社 成型装置及成型方法

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