WO2008044320A1 - Procédé de chauffage par conduction de pièces, procédé de production de corps liés, procédé de production de corps frittés, et dispositif de chauffage par conduction de pièces - Google Patents

Procédé de chauffage par conduction de pièces, procédé de production de corps liés, procédé de production de corps frittés, et dispositif de chauffage par conduction de pièces Download PDF

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Publication number
WO2008044320A1
WO2008044320A1 PCT/JP2006/320512 JP2006320512W WO2008044320A1 WO 2008044320 A1 WO2008044320 A1 WO 2008044320A1 JP 2006320512 W JP2006320512 W JP 2006320512W WO 2008044320 A1 WO2008044320 A1 WO 2008044320A1
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WIPO (PCT)
Prior art keywords
work
side electrode
workpiece
energization heating
electrodes
Prior art date
Application number
PCT/JP2006/320512
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English (en)
Japanese (ja)
Inventor
Takayuki Fujimori
Original Assignee
Mole's Act 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 Mole's Act Co., Ltd. filed Critical Mole's Act Co., Ltd.
Priority to PCT/JP2006/320512 priority Critical patent/WO2008044320A1/fr
Priority to PCT/JP2007/070012 priority patent/WO2008044776A1/fr
Publication of WO2008044320A1 publication Critical patent/WO2008044320A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • 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

Definitions

  • the present invention relates to a work current heating method, a joined body manufacturing method, a sintered body manufacturing method, and a ceramic current heating apparatus.
  • FIG. 16 is a view for explaining a conventional method of manufacturing a joined body.
  • a conventional method for manufacturing a joined body is a state in which a pair of electrodes 910a and 910b electrically connected to a power supply device 930 are interposed, and a plurality of metal members W as a workpiece are arranged.
  • the joined body is manufactured by energizing and heating the plurality of metal members W by passing current through the plurality of metal members W (see, for example, Patent Document 1).
  • Patent Document 1 Japanese Patent Laid-Open No. 2005-262244
  • the desire to greatly increase the heating efficiency of the workpiece is that the workpiece energization heating in which the workpiece is energized and heated by passing a current through the workpiece with the workpiece placed between a pair of electrodes. It is common to all methods.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a work energization heating method capable of significantly increasing the heating efficiency of a work than before.
  • the present invention provides a method for manufacturing a joined body for producing a joined body using such a work current heating method, and a method for producing a sintered body for producing a sintered body using such a work current heating method. The purpose is to provide.
  • an object of the present invention is to provide a work energization heating apparatus that can significantly increase the heating efficiency of the work compared to the prior art.
  • the inventor of the present invention divides at least one of the pair of electrodes into a work side electrode body and a power supply side electrode body.
  • a conductive felt having a lower thermal conductivity than the workpiece side electrode body between the workpiece side electrode body and the power supply side electrode body, that is, at least one of the pair of electrodes is disposed.
  • the heating efficiency of the workpiece can be made significantly higher than before. As a result, the present invention has been completed.
  • the work is passed through a power outlet by passing a current through the work in a state where the work is disposed between a pair of electrodes electrically connected to a power supply device.
  • the heating method of heating a workpiece at least one of the pair of electrodes is a workpiece-side electrode body, a conductive belt having a lower thermal conductivity than the workpiece-side electrode body, and the power supply side.
  • the work is energized and heated using an electrode having a structure in which an electrode body is laminated in this order.
  • the work energization heating method of the present invention there is a conductive felt having a lower thermal conductivity than the work side electrode body between the work side electrode body and the power supply side electrode body. As a result, it is possible to suppress the heat generated in the work and the work-side electrode body from moving to the power supply-side electrode body.
  • the heating efficiency can be made significantly higher than before.
  • the work energization heating method of the present invention it is possible to energize and heat the work with much less electric power than in the past, and the work temperature rise time can be significantly shortened compared to the prior art. In addition, even if the workpiece size is large, it can be heated to a sufficiently high temperature.
  • the work energization heating method of the present invention there is a conductive felt having a lower thermal conductivity than the work side electrode body between the work side electrode body and the power supply side electrode body. Since it is possible to suppress the heat generated in the work and the work-side electrode body from moving to the power supply-side electrode body, it is possible to suppress the power supply-side electrode body from reaching a high temperature. It is possible to suppress surrounding parts from being easily deteriorated.
  • JP 2005-230823 A describes an electrode having a structure in which a workpiece side electrode body, a carbon chip, and a power supply side electrode body are laminated in this order as an electrode ( See Fig. 4 of JP 2005-230823;).
  • the electrode has such a structure, the improvement in the heating efficiency of the work is limited, and the effect as much as the work current heating method of the present invention is obtained. I can't.
  • the conductive felt in the present invention refers to a felt formed by intertwining conductive fibers (for example, carbon fiber, stainless fiber, etc.).
  • the workpiece side electrode body in the present invention refers to an electrode body disposed on the workpiece side among the electrode bodies constituting the electrode, and the power supply side electrode body in the present invention configures the electrode.
  • the electrode body disposed on the power supply device side the electrode body disposed on the power supply device side.
  • the thermal conductivity of the conductive felt is 1Z10 or less of the thermal conductivity of the work-side electrode body.
  • the thermal conductivity of the conductive felt is 1Z10 or less of the thermal conductivity of the workpiece side electrode body.
  • the conductive felt preferably has a structure in which a plurality of felt pieces are laminated.
  • the thickness of the conductive felt is smaller than the thickness of the work-side electrode body.
  • the thickness of the conductive felt becomes thicker than the thickness of the workpiece-side electrode body, a large amount of heat is generated due to the increase in the electrical resistance of the conductive felt, thereby reducing the heating efficiency of the workpiece. It is because it will let you. From this viewpoint, it is more preferable that the thickness of the conductive felt is smaller than the thickness of 1Z2 which is the thickness of the anode side electrode body.
  • the conductive felt is preferably made of carbon felt.
  • the carbon felt in the present invention refers to a felt formed by entanglement of carbon fibers.
  • the work-side electrode body is preferably made of a carbon material.
  • the heat resistance of the workpiece-side electrode body can be increased by employing such a method.
  • the power supply device side electrode body also has a carbon material strength! [0030] Since the carbon material has excellent heat resistance, it is possible to increase the heat resistance of the power supply side electrode body by adopting such a method.
  • carbon material used for the workpiece-side electrode body or the power supply apparatus-side electrode body graphite, a single-bon composite material, or the like can be used.
  • the work is energized and heated in a state where a heat insulating housing is arranged around the work.
  • the presence of the heat insulating housing makes it possible to suppress the heat generated in the cake from being radiated to the surrounding space. It is possible to suppress surrounding components (for example, a vacuum chamber described later) from being easily deteriorated.
  • the heat insulating housing preferably has a carbon felt lining.
  • thermocouple for measuring the workpiece temperature
  • the wiring of the thermocouple is It can be pulled out of the heat insulating housing through the lid portion or the window portion, and the wiring of the thermocouple can be easily routed.
  • the power supply device side electrode body has a structure in which a plurality of flat plates are laminated.
  • the work is energized and heated in a state where a carbon sheet is disposed between the pair of electrodes and the work.
  • the carbon sheet in the present invention refers to a carbon fiber formed into a sheet shape.
  • the work is energized and heated in a state in which a portion of the pair of electrodes on the power supply device side is cooled.
  • the work is energized and heated by passing a pulse current through the work.
  • the heating efficiency of the workpiece can be further greatly increased.
  • the reason why the heating efficiency of the workpiece can be further greatly increased by applying the pulse current is that the induced current is induced in the workpiece by the pulse current, and the work is higher than usual by the action of this induced current. This is presumed to be due to heat generation at temperature.
  • any electrode of the pair of electrodes is lower than the work side electrode body and the work side electrode body! It is preferable that the work is energized and heated using an electrode having a structure in which a conductive felt having thermal conductivity and a power supply side electrode body are laminated in this order.
  • any of the pair of electrodes has a lower thermal conductivity than the work side electrode body between the work side electrode body and the power supply side electrode body.
  • the existence of the characteristic fault makes it possible to suppress the heat generated in the workpiece and the workpiece-side electrode body from moving to the power supply device-side electrode body.
  • the heating efficiency of the workpiece can be further greatly increased.
  • the work energization heating method of the present invention it becomes possible to energize and heat the work with much smaller electric power, and to further significantly shorten the temperature raising time of the work. In addition, even when the workpiece size is large, it is possible to heat by heating to a sufficiently high temperature.
  • a method for manufacturing a joined body according to the present invention is a method for manufacturing a joined body using the work energization heating method of the present invention, wherein a plurality of metal members are prepared as a workpiece.
  • a plurality of metal members can be energized and heated with high heating efficiency. Therefore, the plurality of metal members can be joined at a sufficiently high temperature. It becomes possible, and it becomes possible to manufacture a high-quality joined body.
  • the method for producing a sintered body of the present invention is a method for producing a sintered body by using the method for heating and heating a workpiece according to the present invention.
  • the sintered powder preparing step, the sintered powder arranging step for arranging the sintered powder between the pair of electrodes, and the current flowing through the sintered powder And an electric heating step of sintering the powder for sintered body by heating the powder for sintered body by electric current heating in this order.
  • the sintered body powder can be energized and heated with high heating efficiency.
  • the method for producing a sintered body of the present invention it becomes possible to conduct heating of the sintered body powder with high heating efficiency, so that the sintered body powder can be heated at a sufficiently high temperature. As a result, it becomes possible to produce a high-quality sintered body.
  • the method for producing a sintered body according to the present invention after the energization heating step, a sintered body arranging step of arranging the sintered body between the pair of electrodes, and the sintering It is preferable that the method further includes a second energization heating step of energizing and heating the sintered body by passing an electric current through the body.
  • the degree of sintering of the sintered body can be further increased, and a high-quality sintered body can be produced.
  • the work energization heating device of the present invention includes a power supply device, a pair of electrodes electrically connected to the power supply device, and a vacuum chamber in which the pair of electrodes are installed,
  • the work energization heating apparatus that energizes and heats the work disposed between the pair of electrodes, at least one of the pair of electrodes has a lower thermal conductivity than the work side electrode body and the work side electrode body. It is characterized by having a structure in which a conductive flute having a rate and a power supply device side electrode body are laminated in this order.
  • the work energization heating device of the present invention there is a conductive felt having a lower thermal conductivity than the work side electrode body between the work side electrode body and the power supply side electrode body. As a result, it is possible to suppress the heat generated in the work and the work side electrode body from moving to the power supply side electrode body. It becomes possible to make heating efficiency significantly higher than before. As a result, according to the workpiece energization heating apparatus of the present invention, the workpiece can be energized and heated with much less power than before, and the temperature raising time of the workpiece can be significantly shortened compared to the conventional method. In addition, even if the workpiece size is large, it can be heated to a sufficiently high temperature.
  • the work energization heating device of the present invention there is a conductive felt having a lower thermal conductivity than the work side electrode body between the work side electrode body and the power supply side electrode body.
  • the electrode between the pair of electrodes is also lower than the work side electrode body and the work side electrode body! It is preferable to have a structure in which a conductive felt having thermal conductivity and a power supply side electrode body are laminated in this order.
  • any of the pair of electrodes has a lower thermal conductivity than the work side electrode body between the work side electrode body and the power supply side electrode body.
  • the presence of the fluff makes it possible to suppress the heat generated in the workpiece and the workpiece-side electrode body from moving to the power supply device-side electrode body. It is possible to further greatly increase the heating efficiency.
  • the work energization heating apparatus of the present invention it becomes possible to energize and heat the work with much smaller electric power, and to further greatly shorten the work temperature raising time. In addition, even when the workpiece size is large, it is possible to heat by heating to a sufficiently high temperature.
  • the thermal conductivity lower than that of the work side electrode body is between the work side electrode body and the power supply side electrode body. Therefore, it is possible to suppress the heat generated in the work and the work-side electrode body from moving to the power supply-side electrode body, so that the power supply-side electrode body is heated to a high temperature. It is possible to suppress the deterioration of the components around the electrode.
  • the work energization heating apparatus includes the work energization heating apparatus. It is a joining device for joining a plurality of metal members by energizing and heating a plurality of metal members as a workpiece.
  • the workpiece energization heating apparatus includes a sintering apparatus that sinters the sintered body powder by energizing and heating the sintered body powder as the workpiece. It is a feature.
  • FIG. 1 is a diagram showing a work energization heating apparatus 100 used in a method for manufacturing a joined body according to Embodiment 1.
  • FIG. 2 is a flowchart shown for explaining a method for manufacturing a joined body according to the first embodiment.
  • FIG. 3 is a view for explaining the method for manufacturing the joined body according to the first embodiment.
  • FIG. 4 is a diagram showing a workpiece energization heating apparatus 200 used in the method for manufacturing a joined body according to Embodiment 2.
  • FIG. 5 is a diagram showing a workpiece energization heating apparatus 300 used in the method for manufacturing a joined body according to Embodiment 3.
  • FIG. 6 is a diagram showing a workpiece energization heating apparatus 400 used in the method for manufacturing a joined body according to Embodiment 4.
  • FIG. 7 is a view for explaining a heat insulating housing 470.
  • FIG. 8 is a diagram showing a workpiece energization heating apparatus 500 used in the method for manufacturing a joined body according to Embodiment 5.
  • FIG. 9 is a flowchart shown to explain a method for manufacturing a sintered body according to Embodiment 6.
  • FIG. 10 is a view for explaining the method for manufacturing the sintered body according to the sixth embodiment.
  • FIG. 11 is a flow chart for explaining a method for manufacturing a sintered body according to Embodiment 7.
  • FIG. 12 is a view shown for explaining a method for manufacturing a sintered body according to Embodiment 7.
  • FIG. 13 is a view for explaining a work energization heating method in a test example.
  • FIG. 14 is a graph showing test results in test examples.
  • FIG. 15 is a drawing-substituting photograph showing the current heating state of metal members Wa and Wb and electrode 10a ⁇ : L Of in a test example.
  • FIG. 16 is a view for explaining a conventional method of manufacturing a joined body.
  • Embodiment 1 explains the case where the work energization heating method of the present invention is applied to a joined body manufacturing method (joint body manufacturing method according to Embodiment 1) in which a plurality of metal members are joined to produce a joined body. It is embodiment to do.
  • FIG. 1 is a diagram showing a work energization heating apparatus 100 used in the method for manufacturing a joined body according to the first embodiment.
  • the upper side of the drawing sheet is the upper side of the workpiece energization heating apparatus 100
  • the lower side of the drawing plane is the lower side of the workpiece conduction heating apparatus 100.
  • FIG. 2 is a flowchart for explaining the method for manufacturing the joined body according to the first embodiment.
  • FIG. 3 is a view for explaining the method for manufacturing the joined body according to the first embodiment.
  • Fig 3 (a) is a diagram showing the metal member preparation step S 110
  • FIG. 3 (b) is a diagram showing the metal member arrangement step S 120
  • FIG. 3 (c) is a diagram showing the electric heating step S130
  • FIG. 3 (d) is a view showing a joined body Pj manufactured by the method for manufacturing a joined body according to the first embodiment.
  • 3 (b) and 3 (c) only the pair of electrodes 10a and 10b, the power supply device 30, the wiring 32, and the two metal members Wa and Wb are shown in order to simplify the drawing.
  • the manufacturing method of the joined body according to the first embodiment is electrically connected to the power supply device 30 using the work current heating apparatus 100 (work current heating apparatus 100 according to the first embodiment) shown in FIG.
  • the work current heating apparatus 100 work current heating apparatus 100 according to the first embodiment
  • the metal members Wa and Wb are energized and heated by flowing current through the metal members Wa and Wb to join them.
  • This is a method for manufacturing a joined body for manufacturing the body Pj (see FIG. 3 (d)).
  • the work energization heating apparatus 100 includes a power supply device 30, a pair of electrodes 10a, 10b electrically connected to the power supply device 30, and a pair of electrodes 10a, A vacuum chamber 40 in which 10b is installed; a pair of cooling bodies 20a, 20b that cool the pair of electrodes 10a, 10b; and a pressing device 50 that presses the pair of electrodes 10a, 10b toward each other.
  • the joining device joins the metal members Wa and Wb by energizing and heating the metal members Wa and Wb disposed between the pair of electrodes 10a and 10b.
  • the power supply device 30 has a function of causing a pulse current to flow through the metal members Wa and Wb, and a pair of the power supply device 30 via the wiring 32, the cooling bodies 20a and 20b, and the cooling body protection plates 24a and 24b (described later).
  • the electrodes 10a and 10b are electrically connected.
  • the pair of electrodes 10a, 10b includes a workpiece side electrode body 12a, 12b, a conductive felt 14a, 14b having a lower thermal conductivity than the workpiece side electrode body 12a, 12b, and a power supply side electrode body 16a, 16b have a structure in which they are stacked in this order.
  • the workpiece side electrode bodies 12a and 12b are electrode bodies arranged on the metal members Wa and Wb side among the electrode bodies constituting the electrodes 10a and 10b.
  • As the work-side electrode bodies 12a and 12b disk-shaped flat plates (ISEM-3, manufactured by Toyo Tanso Co., Ltd.) that have carbon material strength are used.
  • the thermal conductivity of the side electrode bodies 12a and 12b is, for example, 128 WZ (m′K).
  • the size of the workpiece side electrode bodies 12a and 12b is, for example, 100 mm (diameter) ⁇ 20 mm (thickness).
  • the conductive felts 14a and 14b are members that are disposed between the workpiece side electrode bodies 12a and 12b and the power supply apparatus side electrode bodies 16a and 16b among the members that constitute the electrodes 10a and 10b.
  • the conductive felts 14a and 14b disc-shaped carbon felt (manufactured by Across Co., Ltd., fired at 2000 ° C) is used.
  • the thermal conductivity of the conductive felts 14a and 14b is, for example, 0.6 WZ (m′K).
  • the size of the conductive felts 14a and 14b is, for example, 100 mm (diameter) ⁇ about 4 mm (thickness) when the load is in a natural state.
  • the thickness of the conductive felts 14a and 14b is, for example, about 1 to 2 mm.
  • the thermal conductivity (0.6 WZ (m.K)) of the conductive felts 14a and 14b is the work side electrode body 12a,
  • the thermal conductivity of 12b (128WZ (m ⁇ K)) is about 1 Z200.
  • the thickness of the conductive felts 14a and 14b (about 1 to 2 mm (when placed between the workpiece side electrode bodies 12a and 12b and the power supply side electrode bodies 16a and 16b)) It is thinner than 12a and 12b (20mm).
  • the power supply device side electrode bodies 16a and 16b are electrode bodies arranged on the power supply device 30 side among the electrode bodies constituting the electrodes 10a and 10b.
  • the upper power supply device side electrode body 16a has a structure in which three flat plates 18a to 18a are laminated.
  • the lower power supply side electrode body 16b has three flat
  • It has a structure in which plates 18b to 18b are laminated.
  • a flat plate (Toyo Tanso Co., Ltd., ISEM-3) is used.
  • Flat plate 18a-18a, 18b-18b is used.
  • the thermal conductivity of 1 3 1 is, for example, 128 WZ (m′K).
  • the size is, for example, 100mm (diameter) x 20mm (thickness), and the size of flat plates 18a and 18b
  • 3 3 is, for example, 150 mm (diameter) X 20 mm (thickness).
  • the flat plates 18a-18a are, for example, 150 mm (diameter) X 20 mm (thickness).
  • the plane size of the flat plate 18a is the same as the plane size of the upper cooling body protection plate 24a.
  • the planar size of the flat plate 18b is the same as that of the lower cooling body protection plate 24b.
  • the number of the flat plates 18a to 18a and 18b to 18b is increased or decreased depending on the size (thickness) of the metal members Wa and Wb. can do.
  • the vacuum chamber 40 is configured to include a pair of electrodes 10a, 10b, metal members Wa, Wb, and a part of the pair of cooling bodies 20a, 20b.
  • a vacuum pump 60 for discharging the gas inside the vacuum chamber 40 to the outside is attached to the vacuum chamber 40.
  • the cooling bodies 20a and 20b are each made of stainless steel. Cooling medium flow paths 22a and 22b for flowing the cooling medium are formed in the cooling bodies 20a and 20b, respectively.
  • a cooling body protection plate 24a that has both the thermal power generated in the electrode 10a and the stainless steel power for protecting the cooling body 20a.
  • a cooling body protection plate 24b made of a stainless steel cover for protecting the cooling body 20b from the heat generated by the electrode 10b.
  • the cooling medium channels 22a and 22b of the cooling bodies 20a and 20b are provided with a cooling medium.
  • the metal members Wa and Wb are energized and heated in a state where the power supply device 30 side portions of the pair of electrodes 10a and 10b are cooled.
  • the pressing device 50 has a hydraulic cylinder 52 that can move up and down, and is attached below the cooling body 20b.
  • the hydraulic cylinder 52 moves upward, the electrode 10b is pushed upward together with the cooling body 20b, and as a result, the pair of electrodes 10a and 10b are pressed toward each other.
  • the method of manufacturing the joined body according to Embodiment 1 includes a metal member preparation step S110, a metal member arrangement step S120, and an electric heating step S130 in this order. Include in
  • Metal member placement process S 120 the metal members Wa and Wb are disposed in a state in which the joining surfaces Sa, 31) (see FIG. 3 & ) are abutted between the pair of electrodes 10a and 10b (see FIG. 3B). reference.;).
  • the metal members Wa and Wb are energized and heated to join the metal members Wa and Wb (see FIG. 3C);
  • the joined body Pj can be manufactured by performing the above steps (see FIG. 3 (d);).
  • the gap between the workpiece side electrode bodies 12a, 12b and the power supply apparatus side electrode bodies 16a, 16b is lower than that of the workpiece side electrode bodies 12a, 12b.
  • the presence of the conductive felts 14a and 14b having thermal conductivity suppresses the heat generated in the metal members Wa and Wb and the workpiece side electrode bodies 12a and 12b from moving to the power supply side electrode bodies 16a and 16b. Therefore, the temperature of the metal members Wa and Wb can be significantly increased more easily than before, and the heating efficiency of the metal members Wa and Wb can be significantly increased as compared with the prior art.
  • the metal members Wa and Wb can be energized and heated with much less electric power than before, and the metal members Wa and Wb can be heated. It is possible to significantly shorten the heating time as compared with the prior art, and furthermore, even if the metal members Wa and Wb are large in size, they can be heated and heated to a sufficiently high temperature. .
  • a lower heat than the work side electrode bodies 12a and 12b is provided between the work side electrode bodies 12a and 12b and the power supply apparatus side electrode bodies 16a and 16b.
  • Conductive felts 14a and 14b having conductivity suppress the transfer of heat generated by metal members Wa and Wb and workpiece side electrode bodies 12a and 12b to power supply side electrode bodies 16a and 16b. Therefore, it is possible to prevent the power supply device side electrode bodies 16a and 16b from becoming high temperature, and it is possible to suppress the deterioration of the components around the electrodes 10a and 10b. Become.
  • the thermal conductivity of the conductive felts 14a, 14b is less than or equal to the thermal conductivity of the workpiece-side electrode bodies 12a, 12b.
  • the heat generated in the members Wa, Wb and the workpiece side electrode body 12a, 12b is generated by the power supply side electrode body 16a, It is possible to greatly suppress the movement to 16b.
  • the thickness of the conductive felts 14a and 14b is smaller than the thickness of the workpiece-side electrode bodies 12a and 12b. As a result, the heat resistance of the metal members Wa and Wb is not reduced due to the increase in electrical resistance.
  • the conductive felts 14a and 14b are made of carbon felt, the heat generated in the metal members Wa and Wb and the workpiece-side electrode bodies 12a and 12b. Can be greatly suppressed from moving to the power supply device side electrode bodies 16a and 16b, and the heat resistance of the conductive felts 14a and 14b can be increased.
  • the workpiece side electrode bodies 12a and 12b also have a carbon material force. Therefore, the heat resistance of the workpiece side electrode bodies 12a and 12b can be increased. It becomes.
  • the power supply device side electrode bodies 16a and 16b also have a carbon material force, so that the heat resistance of the power supply device side electrode bodies 16a and 16b is increased. Is possible.
  • the power device side electrode body 16a has a structure in which the flat plates 18a to 18a are laminated, and the power device side electrode body 16b is the flat plate 18b.
  • the metal members Wa and Wb are energized and heated in a state where the pair of electrodes 10a and 10b are pressed so as to approach each other. , 10b and the metal members Wa, Wb are increased in contact, and the contact resistance between the electrodes 10a, 10b and the metal members Wa, Wb is reduced. As a result, the heating efficiency of the metal members Wa and Wb can be further greatly increased. In addition, since the contact resistance between the electrodes 10a, 10b and the metal members Wa, Wb is less likely to fluctuate, stable energization heating can be performed.
  • the metal members Wa and Wb are energized and heated while the power supply device 30 side of the pair of electrodes 10a and 10b is cooled. It becomes possible to suppress the temperature of the power supply device 30 side of a and 10b from rising to an unfavorable temperature, and to further suppress the deterioration of components around the electrodes 10a and 10b. Become.
  • the metal member preparation step, the metal member arrangement step, and the energization heating step are included in this order.
  • the metal members Wa and Wb can be energized and heated with high heating efficiency, so that it is possible to join the metal members Wa and Wb with much less power than before, and the metal members The time required to join Wa and Wb can be greatly shortened.
  • the metal members Wa and Wb are large in size, they can be joined at a sufficiently high temperature. It becomes possible.
  • the metal members Wa and Wb can be electrically heated with high heating efficiency, so the metal members Wa and Wb can be heated at a sufficiently high temperature. This makes it possible to manufacture a high-quality joined body Pj.
  • the metal members W a and Wb can be energized and heated with high heating efficiency. Can be manufactured.
  • Embodiment 2 describes a case where the work energization heating method of the present invention is applied to a method for manufacturing a joined body in which a plurality of metal members are joined to produce a joined body (a joined body manufacturing method according to Embodiment 2). It is embodiment to do.
  • FIG. 4 is a diagram showing a work energization heating apparatus 200 used in the method for manufacturing a joined body according to the second embodiment.
  • the same members as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the method for manufacturing a joined body according to the second embodiment is basically a method for manufacturing a joined body including an electric heating process similar to the method for manufacturing the joined body according to the first embodiment.
  • the configuration is different from the case of the manufacturing method of the joined body according to the first embodiment. That is, in the manufacturing method of the joined body according to the second embodiment, as shown in FIG. 4, the three phenolic strips 215a to 215a and 215b to 215b are laminated in any of the pair of electrodes 210a and 210b.
  • the conductive felts 214a and 214b having the above structure are used.
  • the method for manufacturing a joined body according to the second embodiment differs from the method for manufacturing the joined body according to the first embodiment in the configuration of the conductive felt, but the method for manufacturing the joined body according to the first embodiment.
  • the electrodes 210a and 210b in which the conductive felts 214a and 214b are arranged between the workpiece side electrode bodies 12a and 12b and the power supply side electrode bodies 16a and 16b are used as a pair of electrodes. It is possible to suppress the heat generated in the metal members Wa and Wb and the workpiece side electrode bodies 12a and 12b from moving to the power supply side electrode bodies 16a and 16b, and the metal members Wa and Wb are significantly larger than before. Therefore, the heating efficiency of the metal members Wa and Wb can be made significantly higher than before.
  • the conductive felts 214a and 214b have a structure in which three pieces of felt 215a to 215a and 215b to 215b are stacked.
  • the heat generated in the metal members Wa and Wb and the work-side electrode bodies 12a and 12b can be further greatly suppressed from moving to the power supply apparatus-side electrode bodies 16a and 16b.
  • the method for manufacturing a joined body according to the second embodiment is the same as the method for producing a joined body according to the first embodiment except for the configuration of the conductive felt. It has the corresponding effect as it is among the effects of the method for manufacturing the joined body according to aspect 1.
  • Embodiment 3 describes the case where the workpiece energization heating method of the present invention is applied to a joined body manufacturing method (joint body manufacturing method according to Embodiment 3) in which a plurality of metal members are joined to produce a joined body. It is embodiment to do.
  • FIG. 5 is a diagram showing a work energization heating apparatus 300 used in the method for manufacturing a joined body according to the third embodiment.
  • the same members as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the method of manufacturing the joined body according to Embodiment 3 basically manufactures the joined body according to Embodiment 1.
  • This is a method for manufacturing a joined body that includes an energization heating process similar to that of the manufacturing method, but the configuration of the power supply device side electrode body is different from that of the joined body manufacturing method according to the first embodiment. That is, in the manufacturing method of the joined body according to the third embodiment, as shown in FIG. 5, the pair of power supply device side electrode bodies 316a, 316b is misaligned. 318a, 318b ⁇ 31
  • the plane size of 8b gradually increases with the direction of the workpiece side electrode body 312a, 312b.
  • the plane sizes of the workpiece side electrode bodies 312a and 312b and the conductive felts 314a and 314b are the same as the plane sizes of the flat plates 318a and 318b.
  • the method for manufacturing a joined body according to the third embodiment differs from the method for producing the joined body according to the first embodiment in the configuration of the power supply side electrode body, but the joined body according to the first embodiment.
  • the electrodes 310a, 310a, 314b, in which the conductive felts 314a, 314b are disposed between the workpiece side electrode bodies 312a, 312b and the power source side electrode bodies 316a, 316b as a pair of electrodes Since 310b is used, it is possible to suppress the heat generated in the metal members Wa and Wb and the workpiece side electrode bodies 312a and 312b from moving to the power supply apparatus side electrode bodies 316a and 316b. As a result, the temperature of the metal members Wa and Wb can be significantly increased compared to the conventional case, and the heating efficiency of the metal members Wa and Wb can be significantly increased as compared with the conventional case.
  • the pair of power supply device side electrode bodies 316a and 316b may be misaligned [even if they are flat, flat plates 318a to 318a and 318b to 318b] Plane size
  • planar size of the flat plates 318a and 318b on the power supply 30 side of the power supply device side electrode bodies 316a and 316b is changed.
  • planar size of the workpiece side electrode bodies 312a and 312b can be increased, and the metal members Wa and Wb having a large planar size can be energized and heated.
  • the method for manufacturing a joined body according to the third embodiment is the same as the method for producing a joined body according to the first embodiment except for the configuration of the power device side electrode body. The corresponding effect among the effects of the method for manufacturing the joined body according to the first embodiment is maintained.
  • the work energization heating method of the present invention is applied to a method for manufacturing a joined body in which a plurality of metal members are joined to produce a joined body (a joined body manufacturing method according to Embodiment 4). It is embodiment explaining a case.
  • FIG. 6 is a view for explaining the workpiece energization heating apparatus 400 used in the method for manufacturing the joined body according to the fourth embodiment.
  • FIG. 7 is a view for explaining the heat insulating housing 470.
  • the same members as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the method for manufacturing a joined body according to the fourth embodiment is basically a method for manufacturing a joined body including an energization heating process similar to the method for manufacturing the joined body according to the first embodiment. , Different from the method for manufacturing the joined body according to Embodiment 1 in that a heat insulating housing is arranged around W b. That is, in the method of manufacturing the joined body according to the fourth embodiment, as shown in FIG. 6, the metal members Wa and Wb are energized and heated with the heat insulating housing 470 disposed around the metal members Wa and Wb. It is said.
  • the heat insulating housing 470 is made of a substantially cylindrical thin plate made of stainless steel, and has a slit 474 formed therein.
  • the heat insulating housing 470 has a carbon felt lining 472.
  • the method for manufacturing a joined body according to Embodiment 4 differs from the method for manufacturing a joined body according to Embodiment 1 in that a heat insulating housing is disposed around the metal members Wa and Wb.
  • a heat insulating housing is disposed around the metal members Wa and Wb.
  • conductive felts 14a and 14b are provided between the workpiece side electrode bodies 12a and 12b and the power supply side electrode bodies 16a and 16b as a pair of electrodes. Since the arranged electrodes 10a and 10b are used, it is possible to suppress the heat generated in the metal members Wa and Wb and the workpiece side electrode bodies 12a and 12b from moving to the power supply side electrode bodies 16a and 16b. Become. As a result, the temperature of the metal members Wa and Wb is much easier to raise than before, and the heating efficiency of the metal members Wa and Wb can be made much higher than before.
  • the presence of the heat insulating housing 470 having the carbon felt lining 472, the heat generated in the metal members Wa and Wb is surrounded by the surroundings. Since it is possible to suppress the radiation to the space, the metal members Wa and Wb can be more easily heated than before, and the heating efficiency of the metal members Wa and Wb can be further greatly increased. It becomes possible.
  • the carbon felt lining 47 The heat insulating housing 470 having 2 can suppress the heat generated in the metal members Wa and Wb from being radiated to the surrounding space. (For example, the vacuum chamber 40) can be prevented from being easily deteriorated.
  • the metal members Wa and Wb are covered with the heat insulating housing 470. However, the state of the metal members Wa and Wb can be observed through the slit portion 474.
  • thermocouple wiring can be drawn out of the heat insulating housing 470 through the slit portion 474, and the thermocouple wiring can be easily routed.
  • the manufacturing method of the joined body according to the fourth embodiment is the same as the manufacturing method of the joined body according to the first embodiment, except that a heat insulating housing is disposed around the metal members Wa and Wb. Since it is a manufacturing method of a joined body, it has the corresponding effect as it is among the effects of the manufacturing method of the joined body according to Embodiment 1.
  • Embodiment 5 describes a case where the work energization heating method of the present invention is applied to a method for manufacturing a joined body in which a plurality of metal members are joined to produce a joined body (a joined body manufacturing method according to Embodiment 5). It is embodiment to do.
  • FIG. 8 is a view showing a work energization heating apparatus 500 used in the method for manufacturing a joined body according to the fifth embodiment.
  • the same members as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the method for producing a joined body according to Embodiment 5 is basically a method for producing a joined body including an energization heating step similar to the method for producing a joined body according to Embodiment 1, but includes a pair of electrodes. This is different from the case of the joined body manufacturing method according to Embodiment 1 in that a carbon sheet is disposed between 10a, 10b and the metal members Wa, Wb. That is, the method of manufacturing the joined body according to Embodiment 5 In the method, as shown in FIG. 8, the metal members Wa and Wb are energized and heated with the carbon sheets 582a and 582b disposed between the pair of electrodes 10a and 10b and the metal members Wa and Wb, respectively. . A carbon sheet (thickness: about 0.2 mm) manufactured by Toyo Tanso Co., Ltd. was used as the carbon sheet.
  • the method for manufacturing the joined body according to Embodiment 1 is different from that in the carbon sheet between the pair of electrodes 10a and 10b and the metal members Wa and Wb.
  • the pair of electrodes is disposed between the workpiece side electrode bodies 12a and 12b and the power supply side electrode bodies 16a and 16b. Since the electrodes 10a and 10b on which the conductive felts 14a and 14b are arranged are used, the heat generated in the metal members Wa and Wb and the workpiece side electrode bodies 12a and 12b is transferred to the power supply side electrode bodies 16a and 16b. It becomes possible to suppress. As a result, the temperature of the metal members Wa and Wb is much easier to raise than before, and the heating efficiency of the metal members Wa and Wb can be made much higher than before.
  • carbon sheets 582a and 582b having high lubricity are disposed between the pair of electrodes 10a and 10b and the metal members Wa and Wb, respectively.
  • the metal members Wa and Wb are electrically heated, it is possible to suppress the electrodes 10a and 10b and the metal members Wa and Wb from being seized.
  • the method for manufacturing the joined body according to the fifth embodiment is the same as that according to the first embodiment except that the carbon sheets 582a and 582b are disposed between the pair of electrodes 10a and 10b and the metal members Wa and Wb. Since the workpiece energization heating method is the same as in the case of the method for manufacturing a body, the corresponding effect among the effects of the method for manufacturing a bonded body according to Embodiment 1 remains as it is.
  • Embodiment 6 is a method for producing a sintered body (a method for producing a sintered body according to Embodiment 6) in which a sintered body is produced by energizing and heating a powder for a sintered body. This is an embodiment for explaining the case of application.
  • FIG. 9 is a flowchart for explaining a method for manufacturing a sintered body according to the sixth embodiment.
  • FIG. 10 is a view for explaining the method of manufacturing the sintered body according to the sixth embodiment.
  • Fig. 10 (a) is a diagram showing the powder preparation process S610 for sintered bodies
  • Fig. 10 (b) is for sintered bodies.
  • FIG. 10 (c) is a diagram showing a powder arrangement step S620
  • FIG. 10 (c) is a diagram showing an electric heating step S630
  • FIG. 10 (d) is a view of a sintered body manufactured by the method for manufacturing a sintered body according to Embodiment 6. It is a figure showing the body Ps.
  • FIGS. 10 (b) and 10 (c) in order to simplify the drawings, a pair of electrodes 10a, 10b, a power supply device 30, wiring 32, a sintered body forming jig (cylindrical shape) Only the upper punch Ta, the cylindrical lower punch Tb, the cylindrical sintering mold Tc), and the sintered powder Ws are shown.
  • a method for manufacturing a sintered body according to Embodiment 6 uses a workpiece energization heating apparatus 600 (work energization heating apparatus 600 according to Embodiment 6) shown in FIGS. 10 (b) and 10 (c).
  • work energization heating apparatus 600 shown in FIGS. 10 (b) and 10 (c).
  • This is a method for producing a sintered body, in which a powder Ws is energized and heated to produce a sintered body Ps (see Fig. 10 (d)).
  • the workpiece energization heating apparatus 600 according to Embodiment 6 has the same configuration as the workpiece energization heating apparatus 100 according to Embodiment 1. That is, the work energization heating device 600 according to Embodiment 6 includes the power supply device 30, the pair of electrodes 10a and 10b electrically connected to the power supply device 30, and the pair of electrodes 10a and 10b. A vacuum chamber 40; a pair of cooling bodies 20a, 20b that cool the pair of electrodes 10a, 10b; and a pressing device 50 that presses the pair of electrodes 10a, 10b toward each other. This is a sintering apparatus that sinters the sintered powder Ws by energizing and heating the sintered powder Ws disposed therebetween.
  • the method for producing a sintered body according to Embodiment 6 includes a sintered body powder preparation step S610, a sintered body powder arrangement step S620, and an electric heating step S630. Include in this order. Hereinafter, these steps will be described in order.
  • FIG. 10 (a) shows a state in which a weighed powder Ws for a sintered body is put in a container. .
  • the sintered body Ps can be manufactured (see FIG. 10 (d);).
  • the method for manufacturing a sintered body according to Embodiment 6 described above includes the powder preparation step S610 for the sintered body, the powder placement step S620 for the sintered body, and the electric heating step S630. Include in this order.
  • the powder preparation step S610 for the sintered body includes the powder preparation step S610 for the sintered body, the powder placement step S620 for the sintered body, and the electric heating step S630. Include in this order.
  • the time required to sinter the sintered powder Ws can be greatly reduced, and even when a large size sintered body Ps is manufactured, the temperature is sufficiently high. It becomes possible to sinter.
  • the workpiece energization heating method of the present invention is performed by energizing and heating the powder for a sintered body to produce a sintered body, and then energizing and heating the sintered body again to increase the degree of sintering.
  • This is an embodiment for explaining a case where the present invention is applied to a sintered body manufacturing method for manufacturing a bonded body (a sintered body manufacturing method according to Embodiment 7).
  • FIG. 11 is a flowchart for explaining the method for manufacturing a sintered body according to the seventh embodiment.
  • FIG. 12 is a view for explaining the method of manufacturing the sintered body according to the seventh embodiment.
  • Fig. 12 (a) is a diagram showing the sintered body Ps obtained by carrying out the electric heating step S730
  • Fig. 12 (b) is a diagram showing the sintered body arranging step S740
  • FIG. 12 (d) is a diagram illustrating a sintered body Ps ′ manufactured by the method for manufacturing a sintered body according to Embodiment 7.
  • FIG. 12 (c) the same members as those described in the first and sixth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Further, in FIG. 12 (b) and FIG. 12 (c), only the pair of electrodes 10a and 10b, the power supply device 30 and the wiring 32, and the sintered body Ps are shown in order to simplify the drawing.
  • a method for manufacturing a sintered body according to Embodiment 7 uses a workpiece energization heating device 600 described in Embodiment 6 to connect a pair of electrodes 10a, 10b electrically connected to power supply device 30.
  • the sintered body powder Ws is energized and heated by passing an electric current through the sintered body powder Ws in a state where the sintered body powder Ws is disposed as a workpiece, and the sintered body Ps (see 012 (a)). ))
  • the sintered body Ps is energized and heated by passing an electric current through the sintered body Ps with the sintered body Ps disposed between the pair of electrodes 10a and 10b.
  • This is a method for manufacturing a joined body for manufacturing a high sintered body Ps' (see Fig. 12 (d)).
  • the method for manufacturing a sintered body according to Embodiment 7 includes a sintered body powder preparation step S710, a sintered body powder arrangement step S720, an electric heating step S730, The sintered body arranging step S740 and the second current heating step S750 are included in this order.
  • Sintered powder preparation step S710 to energization heating step S730 is similar to the sintered body powder preparation step S610 to energization heating step S630 described in the sixth embodiment, and detailed description thereof will be omitted.
  • the “sintered body arranging step S740” and the “second electric heating step S750” will be described.
  • the sintered body Ps is disposed between the pair of electrodes 10a and 10b (see FIG. 12 (b)).
  • the sintered body Ps By passing an electric current through the sintered body Ps, the sintered body Ps is heated by energization (see FIG. 12 (c);).
  • the metal members Wa and Wb as the workpiece were energized and heated using the workpiece energization heating method according to Example Comparative Example 1 and Comparative Example 2 (details will be described later).
  • the temperature and power consumption of the metal members Wa and Wb were compared.
  • FIG. 13 is a diagram shown for explaining the work energization heating method in the test example.
  • FIG. 13 (a) is a diagram for explaining the work energization heating method according to Example 1
  • FIG. 13 (b) is a diagram for explaining the work energization heating method according to Comparative Example 1.
  • FIG. 13 (c) is a diagram for explaining the work energization heating method according to Comparative Example 2.
  • FIGS. 13A to 13C the same members as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted. Further, in FIGS. 13A to 13C, only the pair of electrodes 10a to 10: LOf, the power supply device 30, the wiring 32, and the metal members Wa and Wb are shown in order to simplify the drawing.
  • the work energization heating method according to Example 1 was performed using the work energization heating apparatus 102 having the same configuration as the work energization heating apparatus 100 according to Embodiment 1 described above.
  • the electric current heating method according to Comparative Example 1 was performed using the workpiece electric current heating device 104, and the electric current heating method according to Comparative Example 2 was performed using the workpiece electric current heating device 106.
  • the work energization heating devices 104 and 106 are basically different in the configuration of a force pair electrode having substantially the same configuration as the work energization heating device 102.
  • Example The configuration of the pair of electrodes in Comparative Example 1 and Comparative Example 2 is as follows.
  • the pair of electrodes 10a and 10b in the first embodiment includes the workpiece side electrode bodies 12a and 12b, the conductive felts 14a and 14b, and the power supply side electrode bodies 16a and 16b in this order. It has a laminated structure. Carbon felt is used as the conductive felts 14a and 14b.
  • the pair of electrodes 10c and 10d in Comparative Example 1 has a structure in which workpiece side electrode bodies 12a and 12b and power supply side electrode bodies 16a and 16b are stacked in this order.
  • the pair of electrodes 10c, 10d in Comparative Example 1 is the conventional one described in Patent Document 1 described above. This is the same configuration as the electrode (see FIG. 4 of Patent Document 1) in the workpiece energization heating method.
  • the pair of electrodes lOe, 10f in Comparative Example 2 is composed of the workpiece side electrode bodies 12a, 12b, the carbon tip layers 14e, 14f, and the power supply side electrode bodies 16a, 16b in this order. It has a laminated structure.
  • the pair of electrodes 10e and 10f in Comparative Example 2 is the same as the electrode in the conventional work energization heating method described in the above-mentioned JP-A-2005-230823 (see FIG. 1 of JP-A-2005-230823). However, the thickness of the carbon tip layer is thinner than that of the conventional work energization heating method).
  • the carbon chip layers 14e and 14f carbon sheets manufactured by Toyo Tanso Co., Ltd. were cut and chipped and laminated.
  • test conditions were the following (1) to (3).
  • the current (working current) flowing through the metal members Wa and Wb is a constant current of 1500A, and the voltage (measurement voltage) between the pair of electrodes at this time is measured.
  • Table 1 is a table showing test results in Example Comparative Example 1 and Comparative Example 2.
  • the power consumption (kWh) is
  • the measurement voltage in Example 1 was 3.3V
  • the measurement voltage in Comparative Example 1 was 2.0V
  • the measurement voltage in Comparative Example 2 was 2.2V.
  • FIG. 14 is a graph showing test results in the test examples.
  • Fig. 14 (a) is a graph showing the relationship between workpiece heating time and workpiece temperature in the test example
  • Fig. 14 (b) is a graph showing the relationship between power consumption and workpiece temperature in the test example. is there.
  • the workpiece heating efficiency is compared with the workpiece temperature at the power consumption of 2. OkWh (see Table 1 and Fig. 14 (b). Note that the imaginary line m in Fig. 14 (b) is 2. This is a line indicating the power consumption of OkWh.) O
  • the workpiece temperature in Comparative Example 1 was 420 ° C, and the workpiece temperature in Comparative Example 2 was about 510 ° C. In contrast, the workpiece temperature of Example 1 was about 730 ° C. From this, it can be seen that the heating efficiencies of the metal members Wa and Wb of Example 1 are significantly higher than the heating efficiencies of the metal members Wa and Wb of Comparative Example 1 and Comparative Example 2.
  • Fig. 15 is a drawing-substituting photograph showing the electrically heated state of the metal members Wa and Wb and the electrode 10a to LOf in the test example.
  • Fig. 15 (a) shows the current heating state (workpiece temperature is 763 ° C) of the metal members Wa and Wb and the electrodes 10a and 10b when the current heating is performed for 40 minutes in Example 1. This is a drawing substitute photo.
  • FIG. 15 (b) shows the current heating state (workpiece temperature is 420 ° C.) of the metal members Wa and Wb and the electrodes 10c and 10d when the current heating is performed for 40 minutes in Comparative Example 1. Drawing substitute copy Is true.
  • Fig. 15 (c) shows a case of conducting heating for 40 minutes in Comparative Example 1, and then increasing the work current to 280 OA stepwise for another 50 minutes (90 minutes total heating) .) Is a drawing-substituting photograph showing the current heating state of the metal members Wa, Wb and the electrodes 10c, 10d (working temperature is 648 ° C.).
  • the member visible above the electrode 10c and below the electrode 10d is a cooling body protection plate (see reference numerals 24a and 24b in FIG. 1).
  • FIG. 15 (d) shows the current heating state (workpiece temperature is 516 ° C.) of the metal members Wa and Wb and the electrodes 10e and 10f when 40 minutes of current heating is performed in Comparative Example 2. This is a drawing substitute photo.
  • Fig. 15 (e) shows the result of conducting heating for 40 minutes in Comparative Example 2, and then increasing the work current to 280 OA stepwise for another 30 minutes (total heating for 70 minutes) .) Is a drawing-substituting photograph showing the current heating state (working temperature is 724 ° C. 0 ) of the metal members Wa, Wb and the electrodes 10e, 10f when.
  • the member that can be seen above the electrode 10e and below the electrode 10f is a cooling body protection plate (see reference numerals 24a and 24b in FIG. 1).
  • Comparative Example 1 a total of 90 minutes of electrical heating was performed, and in Comparative Example 2, a total of 70 minutes of electrical heating was performed. This is because, in Comparative Example 2, the energization heating state of the metal members Wa and Wb and the electrodes 10a to 10f in a high temperature state is observed.
  • Example 1 Comparative Example 1 and Comparative Example 2
  • the current heating states of the metal members Wa and Wb and the electrodes 10a to 10f when the current heating is performed for 40 minutes are compared (FIG. 15 (a)).
  • Example 1 On the other hand, in Example 1, it is observed that only the metal members Wa and Wb and the work-side electrode bodies 12a and 12b emit light brightly as is clear from FIG. 15 (a). In the power supply side electrode bodies 16a and 16b, almost no light emission is observed. From this, the presence of the conductive felt 14a, 14b force S suppresses the heat generated in the metal members Wa, Wb and the workpiece side electrode bodies 12a, 12b from moving to the power supply side electrode bodies 16a, 16b. I found out.
  • the force using carbon felt as the conductive felts 14a, 14b, 214a, 214b, 314a and 314b is not limited to this.
  • a conductive felt made of stainless steel is used as the conductive felt.
  • the force using the workpiece side electrode bodies 12a, 12b, 312a, 312b which also has a carbon material force The present invention is not limited to this.
  • a workpiece-side electrode body having a metal material force such as stainless steel can be used.
  • the force using the power supply device side electrode body 16a, 16b, 316a, 316b that also has a carbon material force The present invention is not limited to this. .
  • a power supply side electrode body having a metal material force such as stainless steel can be used.
  • the heat insulating housing 470 is formed with the slit portion 474.
  • the present invention is not limited to this.
  • a window portion is formed in the heat insulating housing.
  • the present invention can be suitably used in the case of manufacturing a joined body for manufacturing a molding die in which a heat exchange medium channel is formed.

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Abstract

L'invention concerne un procédé de chauffage par conduction de pièces constituées par des éléments métalliques (Wa, Wb) consistant à envoyer un courant dans les éléments métalliques (Wa, Wb) disposés, en tant que pièces, entre une paire d'électrodes (10a, 10b), les électrodes (10a, 10b) ayant une structure utilisée comme corps d'électrodes (12a, 12b) côté pièces, cependant qu'il est prévu des feutres conducteurs (14a, 14b) ayant une conductivité thermique inférieure à celle des corps d'électrodes (12a, 12b) côté pièces, et des corps d'électrodes (16a, 16b) côté alimentation en courant, laminés dans l'ordre qui vient d'être indiqué. En raison de la présence de feutres conducteurs (14a, 14b) ayant une conductivité thermique inférieure à celle des corps d'électrodes (12a, 12b) côté pièces, la transmission de la chaleur générée par les éléments métalliques (Wa, Wb) ou les corps d'électrodes (12a, 12b) côté pièces, aux corps d'électrodes (16a, 16b) côté alimentation en courant peut être supprimée, la température des éléments métalliques (Wa, Wb) peut augmenter facilement, de manière significative, comparativement à la technique connue, et la capacité de chauffage des éléments métalliques (Wa, Wb) est augmentée de manière significative, comparativement à la technique connue.
PCT/JP2006/320512 2006-10-13 2006-10-13 Procédé de chauffage par conduction de pièces, procédé de production de corps liés, procédé de production de corps frittés, et dispositif de chauffage par conduction de pièces WO2008044320A1 (fr)

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PCT/JP2006/320512 WO2008044320A1 (fr) 2006-10-13 2006-10-13 Procédé de chauffage par conduction de pièces, procédé de production de corps liés, procédé de production de corps frittés, et dispositif de chauffage par conduction de pièces
PCT/JP2007/070012 WO2008044776A1 (fr) 2006-10-13 2007-10-13 Procédé de travail de chauffage d'excitation, procédé de production de d'élément soudé, procédé de production d'élément fritté, et dispositif de travail de chauffage d'excitation

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PCT/JP2007/070012 WO2008044776A1 (fr) 2006-10-13 2007-10-13 Procédé de travail de chauffage d'excitation, procédé de production de d'élément soudé, procédé de production d'élément fritté, et dispositif de travail de chauffage d'excitation

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JP5750719B2 (ja) 2011-05-31 2015-07-22 株式会社 旭 成形装置及び成形製品の製造方法
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