JP2000063906A - Electric heating type pressurize-sintering device - Google Patents
Electric heating type pressurize-sintering deviceInfo
- Publication number
- JP2000063906A JP2000063906A JP10234197A JP23419798A JP2000063906A JP 2000063906 A JP2000063906 A JP 2000063906A JP 10234197 A JP10234197 A JP 10234197A JP 23419798 A JP23419798 A JP 23419798A JP 2000063906 A JP2000063906 A JP 2000063906A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- powder
- mold
- electric
- heating body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/34—Heating or cooling presses or parts thereof
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、通電加熱式加圧焼
結装置に関するものであり、より詳しくは、発熱体によ
る発熱量を大きくし、粉末を速やかに目的温度に昇温さ
せるようにした通電加熱式加圧焼結装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric heating type pressure sintering apparatus, and more specifically, to increase the amount of heat generated by a heating element to quickly raise the temperature of a powder to a target temperature. The present invention relates to an electric heating type pressure sintering apparatus.
【０００２】[0002]
【従来の技術】金属の粉末やセラミックの粉末等を加圧
焼結する装置として、通電加熱式加圧焼結装置がある。2. Description of the Related Art As a device for pressure-sintering metal powder, ceramic powder, etc., there is an electric heating type pressure sintering device.
【０００３】従来の通電加熱式加圧焼結装置は、その一
例を図３に示すように、内部に粉末１を加圧成形するた
めの成形空間２を有する筒状のモールド３を設け、該モ
ールド３の成形空間２に上側発熱体４と下側発熱体５を
嵌合するようにしている。As shown in FIG. 3, a conventional electric heating type pressure sintering apparatus is provided with a cylindrical mold 3 having a molding space 2 for press-molding a powder 1 therein. The upper heating element 4 and the lower heating element 5 are fitted in the molding space 2 of the mold 3.
【０００４】前記モールド３の材料としては、高温時の
強度が高く、且つ粉末１等が付着し難い黒鉛等が一般に
用いられている。As the material of the mold 3, graphite or the like, which has high strength at high temperature and is hard to adhere to the powder 1 and the like, is generally used.
【０００５】一方、前記上側発熱体４及び下側発熱体５
は、前記モールド３を構成している黒鉛に対して不純物
を含有することにより電気抵抗が高められた例えばセミ
グラファイト等にて構成されており、発熱体４，５は一
般に図４に示すように円柱形状を有している。On the other hand, the upper heating element 4 and the lower heating element 5
Is composed of, for example, semi-graphite whose electric resistance is increased by containing impurities in the graphite forming the mold 3, and the heating elements 4 and 5 are generally formed as shown in FIG. It has a cylindrical shape.
【０００６】さらに、上側発熱体４の上部には、油圧シ
リンダ等からなる加圧手段６を設置すると共に、モール
ド３及び下側発熱体５を支持する台座ブロックからなる
支持手段７を設けている。Further, a pressurizing means 6 such as a hydraulic cylinder is installed above the upper heating element 4, and a supporting means 7 including a pedestal block for supporting the mold 3 and the lower heating element 5 is provided. .
【０００７】前記加圧手段６と支持手段７は共に良導体
であり、加圧手段６と支持手段７との間には電源８が接
続されている。電源８には、商用電源、或いは直流電源
を用いることができる。The pressing means 6 and the supporting means 7 are both good conductors, and a power source 8 is connected between the pressing means 6 and the supporting means 7. A commercial power supply or a DC power supply can be used as the power supply 8.
【０００８】なお、少くとも前記モールド３の部分は、
図示しない真空チャンバ内に収容されるようになってい
る。At least the part of the mold 3 is
It is accommodated in a vacuum chamber (not shown).
【０００９】このような構成において、まず、モールド
３の成形空間２に下側から下側発熱体５を挿入してモー
ルド３及び下側発熱体５を台座ブロックによる支持手段
７によって支持した状態において、金属やセラミック等
の粉末１を上方から前記成形空間２内に供給する。そし
て、成形空間２に上方から上側発熱体４を挿入する。In such a structure, first, in a state where the lower heating element 5 is inserted into the molding space 2 of the mold 3 from the lower side and the mold 3 and the lower heating element 5 are supported by the supporting means 7 by the pedestal block. A powder 1 of metal, ceramics or the like is supplied into the molding space 2 from above. Then, the upper heating element 4 is inserted into the molding space 2 from above.
【００１０】この状態において、少くともモールド３部
分を包囲するようにした真空チャンバ内を真空状態、ま
たは不活性ガス雰囲気、あるいは水素ガス等の還元ガス
雰囲気とする。In this state, the inside of the vacuum chamber that surrounds at least the mold 3 portion is set to a vacuum state, an inert gas atmosphere, or a reducing gas atmosphere such as hydrogen gas.
【００１１】さらに、電源８を用いて、上側発熱体４と
下側発熱体５の間に電圧を印加することにより、上側発
熱体４と下側発熱体５を通してモールド３及びモールド
３内の粉末１に電流を流し、該電流によって、上側発熱
体４及び下側発熱体５のジュール発熱、更には粉末１自
身のジュール発熱により、粉末１を高温に加熱する。Further, by applying a voltage between the upper heating element 4 and the lower heating element 5 using the power source 8, the mold 3 and the powder in the mold 3 are passed through the upper heating element 4 and the lower heating element 5. A current is applied to the powder 1, and the powder 1 is heated to a high temperature by the Joule heat generation of the upper heating element 4 and the lower heating element 5 and the Joule heating of the powder 1 itself by the current.
【００１２】この状態で、加圧手段６により上側発熱体
４を下降させる。この時、下側発熱体５は支持手段７に
固定されているため、上側発熱体４と下側発熱体５は接
近し、これにより、その間の粉末１は加圧されるが、粉
末１は高温に加熱されていて結合し易い状態となってい
るために、焼結されて加圧焼結体となる。In this state, the upper heating element 4 is lowered by the pressing means 6. At this time, since the lower heating element 5 is fixed to the supporting means 7, the upper heating element 4 and the lower heating element 5 approach each other, whereby the powder 1 between them is pressed, but the powder 1 is Since it has been heated to a high temperature and is in a state where it is easily bonded, it is sintered into a pressure-sintered body.
【００１３】[0013]
【発明が解決しようとする課題】上記の通電加熱式加圧
焼結装置において、大型の焼結体を製造する要求が生じ
ており、大型の焼結体を製造するためには、装置全体を
大型にすると共に、上側発熱体４と下側発熱体５間のプ
レス荷重も大きくなり、このために、強度上の観点から
発熱体４，５の径も大きくしなければならない。In the above-mentioned electric heating type pressure sintering apparatus, there is a demand for producing a large-sized sintered body. In order to produce a large-sized sintered body, the whole apparatus must be manufactured. In addition to being large-sized, the pressing load between the upper heating element 4 and the lower heating element 5 also increases, and therefore the diameters of the heating elements 4 and 5 must be increased from the viewpoint of strength.
【００１４】ここで、発熱体４，５の径が大きくなる
と、発熱体４，５による電気抵抗は減少することにな
る。このために、電源８によって高電圧を作用させて
も、発熱体４，５による発熱が十分に得られなくなり、
よって、粉末１を効率よく昇温することができないとい
う問題が生じる。また、焼結体が大きくなるほど、粉末
１の量が多くなるために、粉末１に対する熱の供給が低
下することになって、粉末１の加熱に時間が掛かるとい
う問題がある。Here, when the diameters of the heating elements 4 and 5 increase, the electrical resistance of the heating elements 4 and 5 decreases. Therefore, even if a high voltage is applied by the power source 8, sufficient heat generation by the heating elements 4 and 5 cannot be obtained,
Therefore, there arises a problem that the temperature of the powder 1 cannot be efficiently raised. Further, as the size of the sintered body increases, the amount of the powder 1 increases, so that the heat supply to the powder 1 decreases, and it takes time to heat the powder 1.
【００１５】本発明は、上述の実情に鑑み、大型の焼結
体に対応して発熱体の径を大きくした場合にも、発熱体
により十分なジュール熱が発生されるようにした通電加
熱式加圧焼結装置を提供することを目的とするものであ
る。In view of the above-mentioned circumstances, the present invention is an electric heating type in which sufficient Joule heat is generated by the heating element even when the diameter of the heating element is increased corresponding to a large sintered body. An object of the present invention is to provide a pressure sintering device.
【００１６】[0016]
【課題を解決するための手段】本発明は、内部に粉末を
加圧成形するための成形空間を有するモールドと、モー
ルドの成形空間に上下から嵌合される上側発熱体及び下
側発熱体と、モールド及び下側発熱体を支持する支持手
段と、上側発熱体に加圧力を与える加圧手段と、加圧手
段と支持手段とに接続した電源と、を備えた通電加熱式
加圧焼結装置において、前記上側発熱体及び下側発熱体
は、所要の電気抵抗を有する導電体部と、絶縁体部とに
よって構成されていることを特徴とする通電加熱式加圧
焼結装置、に係るものである。According to the present invention, there is provided a mold having a molding space for press-molding powder therein, and an upper heating element and a lower heating element fitted in the molding space of the mold from above and below. An electric heating type pressure sintering comprising: a supporting means for supporting the mold and the lower heating element; a pressing means for applying a pressing force to the upper heating element; and a power source connected to the pressing means and the supporting means. In the apparatus, the upper heating element and the lower heating element relate to an electrically heated pressure sintering apparatus, characterized in that the upper heating element and the lower heating element are composed of a conductor part having a required electric resistance and an insulator part. It is a thing.
【００１７】上側発熱体及び下側発熱体が、同心的に配
された導電体部と絶縁体部とからなる２重構造を有して
いてもよく、また、上側発熱体と粉末との間及び下側発
熱体と粉末との間にスペーサを備えていても良い。The upper heating element and the lower heating element may have a double structure composed of a conductor portion and an insulator portion which are concentrically arranged, and between the upper heating element and the powder. A spacer may be provided between the lower heating element and the powder.
【００１８】上記手段によれば、以下のような作用が得
られる。According to the above means, the following effects can be obtained.
【００１９】電源のオンにより上側発熱体及び下側発熱
体間が通電され、両発熱体に電流が流れる。ここで、両
発熱体は、所要の電気抵抗を有する導電体部と絶縁体部
とによって構成されているので、発熱体全体の径が大き
くても、実際に発熱する導電体部の水平方向断面積は小
さく、その分、電気抵抗が大きくなるので、発熱体には
十分なジュール熱が発生することになる。When the power is turned on, the upper heating element and the lower heating element are energized, and a current flows through both heating elements. Here, since both heating elements are composed of a conductor portion and an insulator portion having a required electric resistance, even if the diameter of the entire heating element is large, the horizontal disconnection of the conductor portion that actually generates heat is generated. Since the area is small and the electric resistance is correspondingly large, sufficient Joule heat is generated in the heating element.
【００２０】この結果、発熱体の径を大きくしてプレス
荷重に対する面圧を低く抑えながら、大きな発熱量を得
ることができる。As a result, it is possible to obtain a large amount of heat generation while increasing the diameter of the heating element and suppressing the surface pressure against the pressing load to be low.
【００２１】上側発熱体と下側発熱体の粉末に対向する
面にスペーサを設置すると、発熱体の導電体部からの熱
をスペーサよって分散させることができて、粉末を均一
に加熱することができる。If spacers are provided on the surfaces of the upper heating element and the lower heating element that face the powder, the heat from the conductor portion of the heating element can be dispersed by the spacers, and the powder can be heated uniformly. it can.
【００２２】[0022]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００２３】図１は本発明の実施の形態に係る通電加熱
式加圧焼結装置の概略構成図であり、図３と同一の構成
部分には同一の符号を付して詳細な説明は省略し、本発
明の特徴部分についてのみ説明する。FIG. 1 is a schematic configuration diagram of an electric heating type pressure sintering apparatus according to an embodiment of the present invention. The same components as those in FIG. 3 are designated by the same reference numerals and detailed description thereof will be omitted. However, only the characteristic part of the present invention will be described.
【００２４】図１に示すように、モールド３の成形空間
２に嵌合して、粉末１の加圧と加熱を行うようにした上
側発熱体９と下側発熱体１０を備えている。As shown in FIG. 1, there are provided an upper heating element 9 and a lower heating element 10 which are fitted in the molding space 2 of the mold 3 to pressurize and heat the powder 1.
【００２５】上側発熱体９及び下側発熱体１０は、その
軸を中心として内側に所要の電気抵抗を有する導電体部
９ａ，１０ａを備え、外側に対して同心的に絶縁体部９
ｂ，１０ｂを備えた２重構造を有している。The upper heating element 9 and the lower heating element 10 are provided with conductor portions 9a, 10a having a required electric resistance on the inner side about their axes, and are concentric with the outer side.
It has a double structure including b and 10b.
【００２６】更に具体的に述べると、前記上側発熱体９
と下側発熱体１０は、図１、図２に示すように、筒状に
形成された例えばセラミックからなる絶縁体部９ｂ，１
０ｂの内部に、所要の電気抵抗を有する円柱状のセミグ
ラファイトからなる導電体部９ａ，１０ａを一体に充填
固化した構成を有している。又図１、図２とは逆に、絶
縁体部９ｂ，１０ｂを内側に、外側に導電体部９ａ，１
０ａを備えるようにしても良い。More specifically, the upper heating element 9 is
As shown in FIGS. 1 and 2, the lower heating element 10 and the lower heating element 10 are made of, for example, a ceramic insulator 9b, 1 made of ceramic.
0b has a structure in which conductor portions 9a and 10a made of a semi-graphite column having a required electric resistance are integrally filled and solidified. Contrary to FIG. 1 and FIG. 2, the insulator portions 9b and 10b are placed inside and the conductor portions 9a and 1b are placed outside.
0a may be provided.
【００２７】また、図１では、前記上側発熱体９と下側
発熱体１０における粉末１に対向する面には、スペーサ
１１，１２を設置している。In FIG. 1, spacers 11 and 12 are provided on the surfaces of the upper heating element 9 and the lower heating element 10 facing the powder 1.
【００２８】以下に上記形態例の作用を説明する。The operation of the above embodiment will be described below.
【００２９】図１、図２に示すように、上側発熱体９及
び下側発熱体１０は、外側に絶縁体部９ｂ，１０ｂを備
え、中心部に導電体部９ａ，１０ａを備えた２層構造と
しているので、大型の焼結体を製造するために、加圧手
段６によるプレス荷重を大きくし、また径を大きくした
発熱体４，５を用いても、実際に発熱する導電体部９
ａ，１０ａ自体の径は小さく抑えることができ、よって
大きな電気抵抗が得られる。その結果、この導電体部９
ａ，１０ａによって粉末１を速やかに昇温させるに足る
十分なジュール熱を得ることができる。As shown in FIG. 1 and FIG. 2, the upper heating element 9 and the lower heating element 10 are provided with two layers of insulating parts 9b and 10b on the outside and conductive parts 9a and 10a on the center. Since the structure is employed, even if the press load by the pressing means 6 is increased and the heating elements 4 and 5 having a large diameter are used in order to manufacture a large-sized sintered body, the conductor portion 9 that actually generates heat is generated.
The diameters of a and 10a themselves can be suppressed to be small, so that a large electric resistance can be obtained. As a result, this conductor portion 9
With a and 10a, it is possible to obtain sufficient Joule heat sufficient to quickly raise the temperature of the powder 1.
【００３０】ここで、発熱体９，１０における発熱量に
ついて述べる。Here, the amount of heat generated by the heating elements 9 and 10 will be described.
【００３１】仮に、上側発熱体９及び下側発熱体１０の
両端に電源８が直接接続されて電圧が印加される場合に
は、図３、図４に示す一般的な発熱体４，５も、図１、
図２に示す本実施形態の発熱体９，１０も、印加電圧が
同じであれば、当然のことながら、総発熱量は変わりが
ない。If the power source 8 is directly connected to both ends of the upper heating element 9 and the lower heating element 10 and voltage is applied, the general heating elements 4 and 5 shown in FIGS. , Figure 1,
As for the heating elements 9 and 10 of the present embodiment shown in FIG. 2, if the applied voltage is the same, the total amount of heat generation is naturally unchanged.
【００３２】しかし実際には、電源８に接続された油圧
シリンダによる加圧手段６及び台座ブロックによる支持
手段７が、両発熱体９，１０と直列に接続されている。
従って、発熱体９，１０部分の抵抗が大きくなればなる
ほど、全体を流れる電流ｉは小さくなり、この結果、ｉ
１Ｒ１（Ｒ１を加圧手段６の抵抗値とする）及びｉ２Ｒ
２（Ｒ２を支持手段７の抵抗値とする）で表される加圧
手段６部分の発熱量と支持手段７部分の発熱量は小さく
なる。However, in reality, the pressurizing means 6 by the hydraulic cylinder connected to the power source 8 and the supporting means 7 by the pedestal block are connected in series with both heating elements 9, 10.
Therefore, the larger the resistance of the heating elements 9 and 10 is, the smaller the current i flowing through the whole is.
1R1 (R1 is the resistance value of the pressurizing means 6) and i2R
The heat generation amount of the pressurizing means 6 portion and the heat generation amount of the supporting means 7 portion represented by 2 (R2 is the resistance value of the supporting means 7) are small.
【００３３】電源８の印加電圧が等しければ、直列回路
全体の総発熱量は同じであるから、加圧手段６と支持手
段７の発熱量が小さくなれば、その分、発熱体９，１０
部分の発熱量が大きくなる。すなわち、図３、図４に示
した一般的な発熱体４，５を用いるよりも、本実施形態
の発熱体９，１０を用いる方が発熱体９，１０部分の発
熱量を大きくすることができるのである。If the applied voltage of the power source 8 is equal, the total amount of heat generated by the entire series circuit is the same. Therefore, if the amount of heat generated by the pressurizing means 6 and the supporting means 7 becomes smaller, the heating elements 9, 10 are correspondingly reduced.
The heat value of the part becomes large. That is, it is possible to increase the heat generation amount of the heating elements 9 and 10 by using the heating elements 9 and 10 of the present embodiment, rather than using the general heating elements 4 and 5 shown in FIGS. You can do it.
【００３４】なお発熱体９，１０の導電体部９ａ，１０
ａは、加圧手段６及び支持手段７以上の電気抵抗を有し
ている必要があり、そのために上記導電体部９ａ，１０
ａにはセミグラファイト等の材料が用いられる。The conductor portions 9a, 10 of the heating elements 9, 10 are
It is necessary that a has an electric resistance higher than that of the pressurizing means 6 and the supporting means 7, and therefore, the conductor portions 9a, 10
A material such as semi-graphite is used for a.
【００３５】また、上側発熱体９と下側発熱体１０の粉
末１に対向する面には、スペーサ１１，１２を設置して
いるので、前記導電体部９ａ，１０ａによって発生され
る熱は、スペーサ１１，１２の伝熱により径方向に分散
されて粉末１に伝えられることになり、よって粉末１を
均一に加熱することができる。Further, since spacers 11 and 12 are provided on the surfaces of the upper heating element 9 and the lower heating element 10 facing the powder 1, the heat generated by the conductor portions 9a and 10a is By the heat transfer of the spacers 11 and 12, the heat is dispersed in the radial direction and transferred to the powder 1, so that the powder 1 can be heated uniformly.
【００３６】更に、上記スペーサ１１，１２は、モール
ド３の成形空間２に密に嵌合する形状を有していて、粉
末１が上側発熱体９及び下側発熱体１０とモールド３と
の間に粉末１が侵入するのを防止するようにしており、
このために、前記スペーサ１１，１２は黒鉛にて形成さ
れているモールドと略同等の熱膨張率を有するセミグラ
ファイトによって構成するのが好ましい。Further, the spacers 11 and 12 have such a shape that they are closely fitted in the molding space 2 of the mold 3, and the powder 1 is between the upper heating element 9 and the lower heating element 10 and the mold 3. The powder 1 is prevented from entering the
For this reason, it is preferable that the spacers 11 and 12 are made of semi-graphite having a coefficient of thermal expansion substantially equal to that of a mold made of graphite.
【００３７】前記したような構成において、前述の如
く、電源８により加圧手段６と支持手段７との間に電圧
を印加すると、加圧手段６、上側発熱体９の導電体部９
ａ、スペーサ１１、粉末１、モールド３、スペーサ１
２、下側発熱体１０の導電体部１０ａ、支持手段７とい
う経路で電流が流れる。In the above-mentioned structure, when a voltage is applied between the pressing means 6 and the supporting means 7 by the power source 8 as described above, the pressing means 6 and the conductor portion 9 of the upper heating element 9 are applied.
a, spacer 11, powder 1, mold 3, spacer 1
2. The current flows through the path of the conductor portion 10a of the lower heating element 10 and the supporting means 7.
【００３８】このとき上述したように、図３、図４に示
す一般的な発熱体４，５を使用した場合よりも大きなジ
ュール熱が発熱体９，１０で得られるので、粉末１の容
積が大きくても十分にこの粉末１を加熱することができ
る。また、前記発熱体９，１０の導電体部９ａ，１０ａ
からの熱がスペーサ１１，１２によって径方向に分散さ
れることにより、粉末１を均一に加熱することができ
る。At this time, as described above, since Joule heat larger than that in the case of using the general heating elements 4 and 5 shown in FIGS. 3 and 4 is obtained by the heating elements 9 and 10, the volume of the powder 1 is Even if it is large, this powder 1 can be sufficiently heated. Also, the conductor portions 9a, 10a of the heating elements 9, 10
The powder 1 can be uniformly heated by the heat generated from 1 being dispersed in the radial direction by the spacers 11 and 12.
【００３９】なお、本実施形態では、発熱体９，１０の
内側に導電体部９ａ，１０ａを形成し、外側に絶縁体部
９ｂ，１０ｂを形成した場合について例示したが、その
逆でもよいし、また２重構造以外に３重、４重構造とな
っていてもよく、更には導電体部９ａ，１０ａが発熱体
９，１０の軸心からズレた位置に形成されていても良い
こと、その他本発明の要旨を逸脱しない範囲内において
種々変更を加え得ること、等は勿論である。In the present embodiment, the case where the conductor portions 9a and 10a are formed inside the heating elements 9 and 10 and the insulator portions 9b and 10b are formed outside is illustrated, but the reverse is also possible. In addition to the double structure, the structure may have a triple structure or a quadruple structure, and the conductor portions 9a and 10a may be formed at positions deviated from the axes of the heating elements 9 and 10. It goes without saying that other various changes can be made without departing from the scope of the present invention.
【００４０】[0040]
【発明の効果】以上説明したように、本発明によれば、
上側発熱体及び下側発熱体を、導電体部と絶縁体部とに
よって構成しているので、発熱体全体の径を大きくして
プレス荷重に対する面圧を抑えつつ、発熱体の抵抗を大
きくし発熱量を増加させることができる。従って、大き
な加圧焼結体であっても、確実にかつ効率よく生産する
ことが可能な通電加熱式加圧焼結装置を提供することが
できる。As described above, according to the present invention,
Since the upper heating element and the lower heating element are composed of the conductor portion and the insulator portion, the resistance of the heating element is increased while increasing the diameter of the entire heating element to suppress the surface pressure against the press load. The amount of heat generation can be increased. Therefore, it is possible to provide an electric heating type pressure sintering apparatus capable of reliably and efficiently producing a large pressure sintered body.
【００４１】また、上側発熱体と下側発熱体の粉末に対
向する面にスペーサを設置すると、発熱体の導電体部か
らの熱をスペーサよって分散させることができて、粉末
を均一に加熱することができる。If spacers are provided on the surfaces of the upper heating element and the lower heating element that face the powder, the heat from the conductor portion of the heating element can be dispersed by the spacer, and the powder is heated uniformly. be able to.
【図１】本発明の実施の形態に係る通電加熱式加圧焼結
装置の概略構成図である。FIG. 1 is a schematic configuration diagram of an electric heating type pressure sintering apparatus according to an embodiment of the present invention.
【図２】本発明の実施の形態に係る発熱体の斜視図であ
る。FIG. 2 is a perspective view of a heating element according to an embodiment of the present invention.
【図３】従来の通電加熱式加圧焼結装置の概略構成図で
ある。FIG. 3 is a schematic configuration diagram of a conventional electric heating type pressure sintering apparatus.
【図４】従来の発熱体の斜視図である。FIG. 4 is a perspective view of a conventional heating element.
１ 粉末 ２ 成形空間 ３ モールド ６ 加圧手段 ７ 支持手段 ８ 電源 ９ 上側発熱体 ９ａ，１０ａ 導電体部 ９ｂ，１０ｂ 絶縁体部 １０ 下側発熱体 １１，１２ スペーサ 1 powder 2 molding space 3 mold 6 Pressurizing means 7 Supporting means 8 power supplies 9 Upper heating element 9a, 10a Conductor part 9b, 10b Insulator part 10 Lower heating element 11,12 spacer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 和美 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社横浜エンジニアリ ングセンター内 Ｆターム(参考） 4K018 DA22 DA24 EA04 EA20 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kazumi Mori Stone, Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Kawashima Harima Heavy Industries, Ltd. Yokohama Engineer Inside the center F-term (reference) 4K018 DA22 DA24 EA04 EA20
Claims (3)
間を有するモールドと、モールドの成形空間に上下から
嵌合される上側発熱体及び下側発熱体と、モールド及び
下側発熱体を支持する支持手段と、上側発熱体に加圧力
を与える加圧手段と、加圧手段と支持手段とに接続した
電源と、を備えた通電加熱式加圧焼結装置において、前
記上側発熱体及び下側発熱体は、所要の電気抵抗を有す
る導電体部と、絶縁体部とによって構成されていること
を特徴とする通電加熱式加圧焼結装置。1. A mold having a molding space for press-molding powder inside, an upper heating element and a lower heating element fitted in the molding space of the mold from above and below, and a mold and a lower heating element. An electric heating type pressure sintering apparatus comprising: a supporting unit that supports the pressing unit; a pressurizing unit that applies a pressure to the upper heating unit; and a power source connected to the pressing unit and the supporting unit. The lower heating element is an electric heating type pressure sintering apparatus, characterized in that the lower heating element is composed of a conductor portion having a required electric resistance and an insulator portion.
配された導電体部と絶縁体部とからなる２重構造を有し
ていることを特徴とする請求項１記載の通電加熱式加圧
焼結装置。2. The energization according to claim 1, wherein the upper heating element and the lower heating element have a double structure composed of a conductor portion and an insulator portion which are concentrically arranged. Heating type pressure sintering equipment.
と粉末との間にスペーサを備えていることを特徴とする
請求項１又は２記載の通電加熱式加圧焼結装置。3. The electric heating type pressure sintering apparatus according to claim 1, further comprising a spacer provided between the upper heating element and the powder and between the lower heating element and the powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23419798A JP3870571B2 (en) | 1998-08-20 | 1998-08-20 | Electric heating type pressure sintering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23419798A JP3870571B2 (en) | 1998-08-20 | 1998-08-20 | Electric heating type pressure sintering equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000063906A true JP2000063906A (en) | 2000-02-29 |
| JP3870571B2 JP3870571B2 (en) | 2007-01-17 |
Family
ID=16967217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23419798A Expired - Fee Related JP3870571B2 (en) | 1998-08-20 | 1998-08-20 | Electric heating type pressure sintering equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3870571B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101499983B1 (en) * | 2008-12-18 | 2015-03-09 | 엘지이노텍 주식회사 | Mold apparatus and method of fabricating sintering body |
| JP2017018977A (en) * | 2015-07-09 | 2017-01-26 | トヨタ自動車株式会社 | Forging method |
| FR3058340A1 (en) * | 2016-11-07 | 2018-05-11 | Universite Pierre Et Marie Curie (Paris 6) | PULSE CURVING SINK DEVICE AND ASSOCIATED METHOD |
| KR101874799B1 (en) | 2017-05-08 | 2018-07-05 | (주)태린 | Metal mesh filter forming apparatus with multi mold |
-
1998
- 1998-08-20 JP JP23419798A patent/JP3870571B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101499983B1 (en) * | 2008-12-18 | 2015-03-09 | 엘지이노텍 주식회사 | Mold apparatus and method of fabricating sintering body |
| JP2017018977A (en) * | 2015-07-09 | 2017-01-26 | トヨタ自動車株式会社 | Forging method |
| FR3058340A1 (en) * | 2016-11-07 | 2018-05-11 | Universite Pierre Et Marie Curie (Paris 6) | PULSE CURVING SINK DEVICE AND ASSOCIATED METHOD |
| WO2018083325A1 (en) * | 2016-11-07 | 2018-05-11 | Universite Pierre Et Marie Curie (Paris 6) | Device for sintering by pulsating current and associated method |
| US11247267B2 (en) | 2016-11-07 | 2022-02-15 | Sorbonne Universite | Device for sintering by pulsating current and associated method |
| KR101874799B1 (en) | 2017-05-08 | 2018-07-05 | (주)태린 | Metal mesh filter forming apparatus with multi mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3870571B2 (en) | 2007-01-17 |
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