JP2014105358A - Continuous electrification sintering apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous electrification sintering apparatus that facilitates maintenance and has such expansibility that the treatment process can be varied according to the necessity.SOLUTION: A continuous electrification sintering apparatus 100 has a preheating chamber 10 for preheating a powder material filled in a sintering mold, a sintering chamber 20 for sintering a preheated powder material by electrification while applying pressure to the preheated powder material and a cooling chamber 30 for cooling the sintered powder material. In the apparatus, the powdered material is subjected to treatment while conveying the powdered material filled in the sintering mold through the preheating chamber 10, the sintering chamber 20 and the cooling chamber 30 successively by conveying means. A detachable connection is provided between the preheating chamber 10 and the sintering chamber 20 and between the sintering chamber 20 and the cooling chamber 30, respectively.

Description

  The present invention relates to an electric current sintering apparatus that sinters by energizing a powder material while applying pressure.

  2. Description of the Related Art Conventionally, there has been proposed an electric current sintering apparatus that sinters by energizing a powder material while applying pressure. As described in Patent Document 1, the inventor of the present invention uses two pairs of electrodes around a side surface of a cylindrical mold for storing a powder material under pressure as described in Patent Document 1. There has been proposed an electric current sintering apparatus in which a plurality of sets are arranged so as to apply heat to the powder material while alternately switching energization to a pair of electrodes in each group.

  However, the inventor conducted further research on the above-mentioned electric current sintering apparatus. As a result, "filling of powder material into the mold", "evacuation", "electric current supply to powder material", "cooling", etc. Since it is necessary to perform each process for each sintering process, it has been recognized that it takes a very long time to perform a large amount of sintering process.

  On the other hand, Patent Document 2 describes an automatic electric current sintering system that can automatically and continuously perform a sintering process from filling powder into a sintering mold to sintering. 22 and FIG. 23, the preheating device 30, the sintering device 40, and the cooling device 50 are continuously arranged so that the processing is performed while the sintering mold is conveyed by the conveyor 70. It has become.

Japanese Patent No. 42266774 JP 2000-345208 A

  However, in the invention described in Patent Document 2, although the preheating device 30, the sintering device 40, and the cooling device 50 are continuously arranged, since they are fixedly arranged on one line, There is a problem that it is difficult to maintain.

  Further, since the preheating device 30, the sintering device 40, and the cooling device 50 are in one set, there is no development such as changing the processing steps as necessary.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and provides a continuous electric current sintering apparatus that is easy to maintain and has a development such as changing a processing step as necessary.

  The continuous electric sintering apparatus of the present invention includes a preheating chamber for preheating powder material filled in a sintering mold, a sintering chamber for applying current to the preheated powder material while applying pressure to sinter, and sintering. A cooling chamber for cooling the sintered powder material, and the powder material filled in the sintering mold is sequentially conveyed by the conveying means in the preheating chamber, the sintering chamber, and the cooling chamber. A continuous electric current sintering apparatus that is processed while being detachably connected between the preheating chamber and the sintering chamber and between the sintering chamber and the cooling chamber. Features.

  Preferably, the conveying means in the preheating chamber, the sintering chamber, and the cooling chamber are independently driven.

  Preferably, a separate preheating chamber is additionally connected upstream of the preheating chamber.

  Preferably, a separate cooling chamber is additionally connected downstream of the cooling chamber.

  Preferably, a pressurizing means for pressurizing the sintered powder material is provided in the cooling chamber.

  According to the present invention, a preheating chamber for preheating the powder material filled in the sintering mold, a sintering chamber for energizing and sintering the preheated powder material while pressing, and the sintered powder The powder material filled in the sintering mold is processed while being sequentially conveyed by the conveying means in the preheating chamber, the sintering chamber, and the cooling chamber. A large amount of sintering treatment can be performed in a short time by processing a plurality of sintering dies filled with sinter in parallel while carrying them in order.

  Moreover, since the space between the preheating chamber and the sintering chamber and the space between the sintering chamber and the cooling chamber are detachably connected to each other, maintenance can be easily performed by separating them.

  In addition, since the conveying means in the preheating chamber, the sintering chamber, and the cooling chamber are driven independently, the conveying means becomes an obstacle when the preheating chamber and the sintering chamber, and the sintering chamber and the cooling chamber are separated. There is no.

  In addition, by connecting a separate preheating chamber upstream of the preheating chamber, it is possible to preheat the powder material before sintering in multiple stages and easily change the processing steps as necessary. Can be made.

  In addition, by adding a separate cooling chamber on the downstream side of the cooling chamber, the powder material after sintering can be cooled in multiple stages, and the processing steps can be easily changed as needed. Can be made.

  Further, by providing a pressurizing means for pressurizing the sintered powder material in the cooling chamber, it is possible to perform processing according to the material characteristics by simultaneously performing pressurization during cooling.

  As described above, according to the present invention, it is possible to provide a continuous electric sintering apparatus that is easy to maintain and has a development such as changing a processing step as necessary.

It is a front view which shows the continuous type electric current sintering apparatus which concerns on embodiment of this invention. It is a top view which shows a continuous-type electric sintering apparatus. It is a front view which shows a preheating chamber. It is AA sectional drawing of FIG. It is a front view which shows the part centering on the preheating chamber. It is a rear view which shows a preheating chamber. It is a front view which shows the part centering on a sintering chamber. It is a rear view which shows a sintering chamber. It is a top view which shows the inside of a sintering chamber. It is a front view which shows the part centering on a cooling chamber. It is a side view which shows a connection part. It is BB sectional drawing of FIG. It is (a) top view which shows a plate, (b) It is sectional drawing. It is (a) top view which shows a liner, (b) bottom view, (c) sectional drawing. It is (a) top view and (b) sectional view showing a sintering type (outside type). It is (a) top view and (b) sectional view showing a sintering type (inner type). It is sectional drawing which shows the state which set the powder material in the sintering type | mold. It is a figure explaining the movement in a sintering chamber. It is a front view which shows the cooling chamber which concerns on other embodiment. It is a front view which shows the continuous-type electric sintering apparatus which concerns on other embodiment.

  Hereinafter, with reference to FIG. 1 thru | or FIG. 20, the continuous electric current sintering apparatus which concerns on embodiment of this invention is demonstrated. First, the overall configuration of the continuous current sintering apparatus according to this embodiment will be described. FIG.1 and FIG.2 is the front view and top view which show the continuous-type electric sintering apparatus 100 which concerns on this embodiment.

  The continuous electric current sintering apparatus 100 mainly includes a preheating chamber 10, a sintering chamber 20, and a cooling chamber 30. In the work place, a frame 1 having a rail 2 provided on an upper surface is installed. Further, an upper pedestal 4, a lower pedestal 5, and a side frame 6 are erected on the upper surface of the pedestal 3 installed in the work place.

  The preheating chamber 10 is a hollow cylindrical body and is located on the upstream side (left side in FIG. 1) of the continuous current sintering apparatus 100, and on the rail 2 provided on the upper surface of the frame 1, It is mounted so as to be movable in the left-right direction via the wheels 11. A vacuum pump (not shown) is connected to the preheating chamber 10 so that the chamber is evacuated. The powder material filled in the sintering mold is heated by a heater not shown. The heating method is not limited to the heater, and may be performed, for example, by injecting a high-temperature gas. Further, the energizing shaft may be inserted into the preheating chamber 10 from both sides of the sintering mold in the advancing direction, and the energizing shaft may be brought into contact with the sintering mold from both sides to be energized and heated.

  Similarly, the cooling chamber 30 is a hollow cylindrical body and is located on the downstream side (right side in FIG. 1) of the continuous current sintering apparatus 100 and above the rail 2 provided on the upper surface of the frame 1. The wheel 31 is mounted so as to be movable in the left-right direction. A vacuum pump (not shown) is connected to the cooling chamber 30 so that the chamber is evacuated.

  The sintering chamber 20 is a hollow cylindrical body, and is disposed between the preheating chamber 10 and the cooling chamber 30. A fixed leg 21 is provided at the lower portion of the sintering chamber 20, and the sintering chamber 20 is fixed to the lower receiving base 5 by the fixed leg 21.

  An upper cylindrical portion 24 having a cylinder device (not shown) is provided between the sintering chamber 20 and the upper cradle 4, and the lower portion of the upper cylindrical portion 24 is the interior of the sintering chamber 20. Leads to. Similarly, a lower cylindrical portion 25 having a cylinder device (not shown) is provided between the sintering chamber 20 and the lower cradle 5, and the upper portion of the lower cylindrical portion 25 is the sintering chamber. 20 inside.

  Four side cylindrical portions 26 to which a cylinder device 27 is attached are provided on the side surface of the sintering chamber 20, and the distal ends of the side cylindrical portions 26 communicate with the inside of the sintering chamber 20. The four side cylindrical portions 26 are provided obliquely with respect to the direction from the upstream side to the downstream side of the continuous electric sintering apparatus 100 so that two of them are opposed to each other.

  Connecting portions 40 are disposed upstream of the preheating chamber 10, between the preheating chamber 10 and the sintering chamber 20, between the sintering chamber 20 and the cooling chamber 30, and downstream of the cooling chamber 30. The connecting portion 40 is a box-like body having a hollow inside and serves to connect the chambers in a detachable manner, and plays a role of opening and closing the connecting portion by the cylinder device 41.

  Next, with reference to FIG.3 and FIG.4, the fixing method of the preheating chamber 10 and the connection part 40 is demonstrated. Circular flange portions 13 are formed at both ends of the preheating chamber 10 that is a hollow cylindrical body. And the flange part 13 is made to contact | abut to the side surface of the connection part 40, and it fixes with the some volt | bolt 7. FIG. An opening 43 is provided on the side surface of the connecting portion 40.

  3 and 4 show a fixing method between the preheating chamber 10 and the connecting portion 40, a fixing method between the sintering chamber 20 and the connecting portion 40 and a fixing method between the cooling chamber 30 and the connecting portion 40. Is the same. With such a fixing method, the preheating chamber 10 and the sintering chamber 20 and the sintering chamber 20 and the cooling chamber 30 are detachably connected via the connecting portion 40, respectively. .

  Next, with reference to FIG. 5 and FIG. 6, a conveying means for conveying the sintered mold filled with the powder material in the preheating chamber 10 will be described. A plurality of rollers 12 are provided inside the preheating chamber 10, and a plate on which a sintering mold filled with a powder material is loaded is conveyed from the upstream side to the downstream side by the rotation of the roller 12 as will be described later. It has become so. The connecting portion 40 is provided with a roller 42, and the sintering chamber 20 is provided with a roller 22. A frame 8 provided with rollers 9 is disposed on the upstream side of the preheating chamber 10.

  As shown in FIG. 6, the plurality of rollers 12 inside the preheating chamber 10 are rotated by a drive mechanism provided on the back surface. The drive mechanism includes a plurality of gears 90 respectively connected to the plurality of rollers 12, a gear 91 that is rotated by the power of the motor 93, a chain feeding gear 92, and a power transmission chain 94. . When the motor 93 is rotated, the plurality of gears 90 are rotated and the plurality of rollers 12 are rotated. Note that the drive mechanism of the preheating chamber 10 is not connected to the roller 42 of the connecting portion 40 or the roller 22 of the sintering chamber 20, and the plurality of rollers 12 that are transport means in the preheating chamber 10 are independent. To drive.

  Next, with reference to FIG. 7 and FIG. 8, a conveying means for conveying the sintering mold filled with the powder material in the sintering chamber 20 will be described. A plurality of rollers 22 are provided inside the sintering chamber 20, and a plate on which a sintering die filled with a powder material is loaded is conveyed from the upstream side to the downstream side by the rotation of the rollers 22 as will be described later. It has come to be. Note that a roller 42 is provided in the connecting portion 40.

  As shown in FIG. 8, the plurality of rollers 22 in the sintering chamber 20 are rotated by a driving mechanism provided on the back surface. The drive mechanism includes a plurality of gears 90 respectively connected to a plurality of rollers 22, a gear 91 that is rotated by the power of a motor 93, a chain feeding gear 92, and a power transmission chain 94. . When the motor 93 is rotated, the plurality of gears 90 are rotated and the plurality of rollers 22 are rotated. In addition, the drive mechanism of the sintering chamber 20 is not connected to the roller 42 of the connecting portion 40, and the plurality of rollers 22 that are conveying means in the sintering chamber 20 are driven independently. Yes.

  Next, the sintering mechanism in the sintering chamber 20 will be described with reference to FIGS. In the sintering chamber 20, the lower part of the upper cylindrical part 24 which has a cylinder apparatus (not shown) is connecting inside, and the upper punch 24a is raised / lowered by the cylinder apparatus. Moreover, the upper part of the lower cylindrical part 25 which has a cylinder apparatus (not shown) is connecting inside, and the lower punch 25a raises / lowers with a cylinder apparatus. An opening 28 through which the lower punch 25a can pass is provided on the bottom surface of the sintering chamber 20.

  Further, the distal ends of four side cylindrical portions 26 to which the cylinder device 27 is attached communicate with the sintering chamber 20, and the electrode 26 a is advanced and retracted by the cylinder device 27. As the electrode 26a advances and retreats, the electrode 26a is energized by contacting or leaving the sintered mold filled with the powder material. Normally, sintering is performed while energizing a pair of opposing electrodes 26a and sequentially switching the two sets of electrodes 26a.

  Next, with reference to FIG. 10, a conveying means for conveying the sintered mold filled with the powder material in the cooling chamber 30 will be described. A plurality of rollers 32 are provided inside the cooling chamber 30, and a plate on which a sintering mold filled with a powder material is loaded is conveyed from the upstream side to the downstream side by the rotation of the rollers 32 as will be described later. It has become so. The connecting portion 40 is provided with a roller 42, and the sintering chamber 20 is provided with a roller 22. A frame 8 provided with rollers 9 is disposed on the downstream side of the cooling chamber 30.

  The driving mechanism for the plurality of rollers 32 inside the cooling chamber 30 is the same as the driving mechanism for the preheating chamber 10 shown in FIG. Note that the drive mechanism of the cooling chamber 30 is not connected to the roller 42 of the connecting portion 40 or the roller 22 of the sintering chamber 20, and the plurality of rollers 32 serving as the conveying means in the cooling chamber 30 are independent. To drive.

  Next, with reference to FIG.11 and FIG.12, the opening / closing mechanism of the connection part 40 is demonstrated. On both side surfaces of the connecting portion 40, openings 43 and 44 are provided for the passage of a sintered mold filled with a powder material. A cylinder device 41 is attached to an upper portion of the connecting portion 40, and a rod 45 attached to the lower end of the cylinder device 41 is moved up and down. A gate holding portion 47 is attached to the lower end of the rod 45. The gate holding portion 47 includes an advance / retreat mechanism that advances and retracts the plate-like gate 46 toward the opening 43. Further, the roller 42 of the connecting portion 40 is raised and lowered in accordance with the raising and lowering of the gate 46.

  FIG. 12A shows a state where the gate 46 is raised and the opening 43 is opened. At this time, since the sintered mold filled with the powder material passes through the opening 43, the roller 42 is also raised. FIG. 12B shows a state where the gate 46 is lowered. At this time, the roller 42 is lowered so as not to obstruct the descending gate 46. However, the opening 43 is not yet sealed. Next, FIG. 12C shows a state in which the gate holding part 47 brings the gate 46 into close contact with the opening 43 to seal the opening 43. As described above, the opening 43 of the connecting portion 40 is opened and closed. In the present embodiment, the opening 44 is not provided with an opening / closing mechanism and remains open. Of course, the opening 44 may be provided with an opening / closing mechanism, but either one may be provided.

  Next, with reference to FIG. 13 thru | or FIG. 17, the sintering die | dye which fills with powder material and moves the inside of an apparatus and the components for moving a sintering die are demonstrated.

  FIG. 13A is a plan view and FIG. 13B is a cross-sectional view showing a plate 50 that moves on a roller as a conveying means in each chamber. The plate 50 is a rectangular flat plate, and an opening 51 is formed at the center.

  14A is a plan view, FIG. 14B is a bottom view, and FIG. 14C is a sectional view showing the liner 60 placed on the plate 50. The liner 60 is a circular flat plate, and a small diameter portion 61 is formed at the center. The small diameter portion 61 is sized to fit into the opening 51 of the plate 50.

  FIG. 15A is a plan view and FIG. 15B is a cross-sectional view showing a sintering mold (outer mold) 70 placed on the liner 60. The outer mold 70 has an octagonal cylindrical shape in plan view, and has a tapered opening 71 whose diameter is increased downward in the center. FIG. 16A is a plan view and FIG. 16B is a cross-sectional view showing a sintered mold (inner mold) 80 placed on the liner 60. The inner mold 80 has a cylindrical shape, and has an outer surface formed in a tapered shape whose diameter is expanded downward, and an opening 81 for filling a powder material in the center. The height of the inner mold 80 is slightly higher than the height of the outer mold 70. Then, the inner mold 80 is fitted into the opening 71 of the outer mold 70 to complete the sintered mold. Depending on the shape of the product to be sintered, a mold can be further arranged inside. Further, instead of using the outer mold and the inner mold, one mold may be used.

  FIG. 17 is a cross-sectional view showing a state in which the plate 50, the liner 60, and the sintering dies 70 and 80 are set and filled with a powder material. The small diameter portion 61 of the liner 60 is fitted into the opening 51 of the plate 50. Then, the sintering dies 70 and 80 are placed on the liner 60, and the powder material P is filled in the opening 81 of the inner die 80. A graphite punch 82 is placed on the upper part of the powder material. The powder material set and filled as described above is sintered while passing through each chamber of the continuous electric current sintering apparatus 100.

  Next, a sintering method by the continuous electric current sintering apparatus 100 according to the present embodiment will be described. The sintering method of the continuous electric current sintering apparatus 100 according to the present embodiment mainly includes a preheating step, a sintering step, and a cooling step, and the conveyance of the powder material filled in the sintering mold before and after each step is performed. Done.

  In the following description, each chamber is evacuated, but the inside of the preheating chamber 10, the sintering chamber 20, the cooling chamber 30, and the connecting portion 40 is kept airtight by a known sealing method. Also, the vacuum pumps for evacuating each chamber are driven independently.

(Transport to preheating chamber)
The powder material P set and filled in the state shown in FIG. 17 is conveyed to the preheating chamber 10. This conveyance may be automated or may be performed manually.

(Preheating process)
The powder material P filled in the sintering dies 70 and 80 is heated by a heater provided in the preheating chamber 10.

(Transport from the preheating chamber to the sintering chamber)
The preheating chamber 10 and the sintering chamber 20 are evacuated. Next, while opening the opening 43 of the connection part 40 between the preheating chamber 10 and the sintering chamber 20, the roller 12 which is a conveyance means in the preheating chamber 10 is driven, and the conveyance means in the sintering chamber 20 is driven. The plate 22 on which the liner 60 and the sintering dies 70 and 80 are placed is transported from the preheating chamber 10 to the sintering chamber 20. Then, the opening 51 of the plate 50 is moved to a position that matches the opening 28 (lower punch 25a) at the bottom of the sintering chamber 20 (state shown in FIG. 18A). And the opening part 43 of the connection part 40 is closed. The plate 50 is positioned by a sensor or the like.

(Sintering process)
The lower punch 25a of the sintering chamber 20 is raised to pass through the opening 51 of the plate 50, and the liner 60 on which the sintering dies 70 and 80 are placed is lifted (state shown in FIG. 18B). Further, the upper punch 24 a is lowered to pressurize the powder material P filled in the sintering dies 70 and 80. A graphite cap 29 is attached to the lower end of the upper punch 24a. And it supplies with electricity, making the electrode 26a contact | abuts with the outer type | mold 70 suitably, and the powder material P is sintered. When the sintering is completed, the upper punch 24a is raised, the lower punch 25a is lowered, and the liner 60 on which the sintering dies 70 and 80 are placed is placed on the plate 50 as before.

(Transfer from sintering chamber to cooling chamber)
The inside of the cooling chamber 30 is evacuated. Next, while opening the opening part 43 of the connection part 40 between the sintering chamber 20 and the cooling chamber 30, while driving the roller 22 which is a conveying means in the sintering chamber 20, the conveying means in the cooling chamber 30 The plate 32 on which the liner 60 and the sintering dies 70 and 80 are placed is transported from the sintering chamber 20 to the cooling chamber 30. And the opening part 43 of the connection part 40 is closed.

(Cooling process)
In the cooling chamber 20, the powder material P filled in the sintering dies 70 and 80 is cooled.

(Conveying from the cooling chamber)
The plate 50 on which the liner 60 and the sintering dies 70 and 80 are placed is conveyed from the cooling chamber 30 and taken out. This conveyance may be automated or may be performed manually.

  The above processing steps are described for the processing of the powder material P filled in one sintering mold, but a plurality of sintering dies 70 and 80 filled with the powder material P are conveyed in order. However, it goes without saying that the preheating step, the sintering step, and the cooling step are simultaneously performed.

  According to the continuous electric current sintering apparatus 100 according to the present embodiment, the preheating chamber 10 that preheats the powder material P filled in the sintering dies 70 and 80 and the preheated powder material P are pressurized. The preheating chamber 10 includes a sintering chamber 20 that is energized and sintered, and a cooling chamber 30 that cools the sintered powder material P, and the sintering material 70 and 80 are filled with the powder material P. Since the inside of the sintering chamber 20 and the inside of the cooling chamber 30 are processed while being sequentially conveyed by the conveying means, a plurality of sintering dies 70 and 80 filled with the powder material P are simultaneously conveyed while being sequentially conveyed. By carrying out the treatment, a large amount of sintering treatment can be performed in a short time.

  In addition, since the preheating chamber 10 and the sintering chamber 20 and the sintering chamber 20 and the cooling chamber 30 are detachably connected to each other, they can be separated and easily maintained. .

  Further, since the conveying means in the preheating chamber 10, the sintering chamber 20 and the cooling chamber 30 are independently driven, the preheating chamber 10 and the sintering chamber 20 are separated from the sintering chamber 20 and the cooling chamber 30. In this case, the conveying means does not become an obstacle.

  Note that, as in another embodiment shown in FIG. 19, a pressurizing unit that pressurizes the sintered powder material P may be provided in the cooling chamber 30. Like the sintering chamber 20, the cooling chamber 30 is provided with an upper cylindrical portion 34 and an upper punch 34 a, a lower cylindrical portion 35 and a lower punch 35 a, and while being cooled in the cooling chamber 30, Pressurization to the powder material P can be continued.

  Thus, by providing the pressurizing means for pressurizing the sintered powder material P in the cooling chamber 30, it is possible to perform processing according to the material characteristics by simultaneously performing pressurization during cooling. .

  Moreover, you may add and connect the separate preheating chamber 10 to the upstream of the preheating chamber 10 like other embodiment shown in FIG. Further, a separate cooling chamber may be added and connected to the downstream side of the cooling chamber 30. In FIG. 20, one preheating chamber 10 and one cooling chamber 30 are added, but either one may be added or two or more may be added.

  In this way, by adding and connecting a separate preheating chamber 10 to the upstream side of the preheating chamber 10, the preheating of the powder material P before sintering can be performed in a plurality of stages, and processing is performed as necessary. The process can be easily changed.

  Further, by adding a separate cooling chamber 30 to the downstream side of the cooling chamber 30, the powder material P after sintering can be cooled in a plurality of stages, and processing steps can be performed as necessary. It can be easily changed.

  As described above, according to the continuous electric current sintering apparatus 100 according to the present embodiment, it is possible to provide a continuous electric current sintering apparatus that is easy to maintain and has expandability such as changing the processing steps as necessary. .

  In addition, this invention is not limited to the said embodiment, A various change is possible so that it may illustrate below.

  In the present embodiment, the chambers 10, 20, 30 and the connecting portion 40 are fixed by the bolts 7, but other methods may be used as long as they can be attached and detached and airtightness can be secured.

  Further, although the upper punch 24a, the lower punch 25a, the electrode 26a, and the gate 46 are driven by the cylinder device, other driving methods such as an electric motor may be used.

  Alternatively, the upper punch 24a may be fixed at a predetermined position in advance without being raised and lowered, and may be pressurized only by raising the lower punch 25a.

  Further, although the cooling chamber 30 is naturally cooled, it may be forcedly cooled by providing a separate cooling means.

DESCRIPTION OF SYMBOLS 1 Frame 2 Rail 3 Base 4 Upper base 5 Lower base 6 Side frame 7 Bolt 8 Frame 9 Roller 10 Preheating chamber 11 Wheel 12 Roller 13 Flange part 20 Sintering chamber 21 Fixed leg 22 Roller 23 Flange part 24 Upper cylindrical shape Portion 24a Upper punch 25 Lower tubular portion 25a Lower punch 26 Side tubular portion 26a Electrode 27 Cylinder device 28 Opening portion 29 Graphite cap 30 Cooling chamber 31 Wheel 32 Roller 33 Flange portion 34 Upper tubular portion 34a Upper punch 35 Lower tube Shaped portion 35a Lower punch 40 Connecting portion 41 Cylinder device 42 Roller 43 Opening portion 44 Opening portion 45 Rod 46 Gate 47 Gate holding portion 48 Hole 50 Plate 51 Opening portion 60 Liner 61 Small diameter portion 70 Sintering die (outer die)
71 Opening 80 Sintered mold (inner mold)
81 Opening 82 Graphite Punch 90 Gear 91 Gear 92 Gear 93 Motor 94 Chain 100 Continuous Electric Sintering Device P Powder Material

Claims (5)

A preheating chamber for preheating the powder material filled in the sintering mold, a sintering chamber for energizing and sintering the preheated powder material, and cooling the sintered powder material A continuous energization sintering in which the powder material filled in the sintering mold is processed while being transported in the preheating chamber, the sintering chamber, and the cooling chamber in order by a transporting means. A device,
A continuous current sintering apparatus, wherein the preheating chamber and the sintering chamber and the sintering chamber and the cooling chamber are detachably connected to each other.   The continuous energization sintering apparatus according to claim 1, wherein conveying means in the preheating chamber, the sintering chamber, and the cooling chamber are independently driven.   The continuous electric sintering apparatus according to claim 1 or 2, wherein a separate preheating chamber is additionally connected to the upstream side of the preheating chamber.   The continuous electric sintering apparatus according to any one of claims 1 to 3, wherein a separate cooling chamber is additionally connected to the downstream side of the cooling chamber.   The continuous electric sintering apparatus according to any one of claims 1 to 4, further comprising a pressurizing unit configured to pressurize the sintered powder material in the cooling chamber.