JP2021087985A - Joule heat metal rolling device - Google Patents

Joule heat metal rolling device Download PDF

Info

Publication number
JP2021087985A
JP2021087985A JP2019220774A JP2019220774A JP2021087985A JP 2021087985 A JP2021087985 A JP 2021087985A JP 2019220774 A JP2019220774 A JP 2019220774A JP 2019220774 A JP2019220774 A JP 2019220774A JP 2021087985 A JP2021087985 A JP 2021087985A
Authority
JP
Japan
Prior art keywords
metal material
joule
metal
thermometal
rolling apparatus
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.)
Pending
Application number
JP2019220774A
Other languages
Japanese (ja)
Inventor
俊助 牧村
Shunsuke Makimura
俊助 牧村
裕明 栗下
Hiroaki Kurishita
裕明 栗下
憲採 鄭
Hun-Chea Jung
憲採 鄭
高一 新倉
Koichi Niikura
高一 新倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kinzoku Giken Co Ltd
High Energy Accelerator Research Organization
Original Assignee
Kinzoku Giken Co Ltd
High Energy Accelerator Research Organization
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 Kinzoku Giken Co Ltd, High Energy Accelerator Research Organization filed Critical Kinzoku Giken Co Ltd
Priority to JP2019220774A priority Critical patent/JP2021087985A/en
Publication of JP2021087985A publication Critical patent/JP2021087985A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Control Of Resistance Heating (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

To provide a Joule heat metal rolling device that is rolled by low speed deformation while locally heating a pressure application part of a metal material, which is suitable for rolling manufacture of a transition metal carbide-containing tungsten alloy having toughness and high heat resistance.SOLUTION: The Joule heat metal rolling device is composed of a container that stores a metal material and is vacuum or filled with inert gas, and an upper conductive roll and a lower conductive roll that vertically press a local area of the metal material in the vacuum container and Joule heat the metal material by applying current to the local area. The metal material is rolled by grain boundary slippage transformation.SELECTED DRAWING: Figure 1

Description

本発明は、金属材料の圧力印加箇所を局所的に加熱しながら低速変形により圧延するジュール熱金属圧延装置に関し、より詳しくは、靭性・高耐熱性の遷移金属炭化物入りタングステン合金の圧延製造に好適なジュール熱金属圧延装置に関するものである。 The present invention relates to a Joule thermometal rolling apparatus that rolls a metal material by low-speed deformation while locally heating a pressure-applied portion, and more specifically, is suitable for rolling production of a tungsten alloy containing a transition metal carbide having toughness and high heat resistance. It relates to a Joule thermometal rolling mill.

本発明は、発明者らが開発した特許文献１の合金を製造するために開発された装置である。特許文献１は、合金、特に、タングステン材料に再結晶微細組織を導入し、その再結晶微細組織における弱い粒界を著しく強化することにより、低温脆化、再結晶脆化、照射脆化が大幅に改善された合金材料を、ＩＶＡ族、ＶＡ族又はＶＩＡ族遷移金属の炭化物から選ばれる少なくとも１種及び金属原料をメカニカルアロイングする工程、前記メカニカルアロイングする工程で得られた原料粉末を熱間等方圧プレスにより焼結する工程、前記焼結する工程で得られた合金を５００℃以上２０００℃以下、１０−５ｓ−１以上１０−２ｓ−１以下の歪速度で、６０％以上の塑性変形を施す工程で合金を製造するものである。 The present invention is an apparatus developed for producing the alloy of Patent Document 1 developed by the inventors. Patent Document 1 introduces a recrystallized microstructure into an alloy, particularly a tungsten material, and remarkably strengthens weak grain boundaries in the recrystallized microstructure, whereby low-temperature brittleness, recrystallization brittleness, and irradiation brittleness are significantly increased. The alloy material improved to the above, at least one selected from the carbides of IVA group, VA group or VIA group transition metal and the metal raw material mechanical alloying step, the raw material powder obtained in the mechanical alloying step is heated. The step of sintering by an iso-isostatic press, the alloy obtained in the step of sintering is 60% or more at a strain rate of 500 ° C. or higher and 2000 ° C. or lower, 10-5s-1 or higher and 10-2s-1 or lower. An alloy is manufactured in the process of plastic deformation.

遷移金属炭化物入りタングステン合金を製造する一つの工程で、タングステン合金を粒界すべり処理（高温中で低速で変形）させる必要がある。 In one step of manufacturing a tungsten alloy containing transition metal carbides, it is necessary to perform grain boundary slip treatment (deformation at low speed in high temperature).

そこで、特許文献１では、その製造として、粒界すべり処理（高温中での低速変形）を実現するために一軸加圧型のホットプレスの使用を提案（段落００４２）していたが、製造可能金属材料の大きさは印可可能な荷重に制限されていた。 Therefore, Patent Document 1 proposes the use of a uniaxial pressure type hot press in order to realize grain boundary slip treatment (low-speed deformation at high temperature) as its production (paragraph 0042), but a metal that can be produced. The size of the material was limited to the load that could be applied.

荷重制限の課題を解決するためには圧延することが望ましいが、従来の熱間圧延装置では、加熱炉内で加熱した材料を圧延ロールに送り込んで熱間圧延を行い、送り動作時に材料の温度は降下するために圧延時の温度は下がってしまい低速での粒界すべり処理は実現できない。また金属材料全体を加熱する必要があるため、加熱のための電力も大きくなる。 Rolling is desirable to solve the problem of load limitation, but in the conventional hot rolling apparatus, the material heated in the heating furnace is fed to the rolling roll to perform hot rolling, and the temperature of the material during the feeding operation. Since the temperature drops during rolling, the grain boundary slip treatment at low speed cannot be realized. In addition, since it is necessary to heat the entire metal material, the electric power for heating also increases.

他方、圧延の際に、圧延ロールと別つに通電ロールを用いて金属材料に通電し、ジュール加熱させる技術が知られている（特許文献２）。また、その際に生じる金属材料に生じる波や放電を低減させる技術も知られている（特許文献３，４）。 On the other hand, there is known a technique of energizing a metal material by using an energizing roll separately from the rolling roll to heat Joule during rolling (Patent Document 2). Further, a technique for reducing waves and electric discharges generated in a metal material generated at that time is also known (Patent Documents 3 and 4).

しかしながら、特許文献２−４は、通常の熱間圧延では数メートル／秒で処理され、低速圧延を想定しておらず、発熱領域を局所化していないため、金属材料を広範囲に加熱する必要があり、熱損失が大きく大容量の電力を消費する。 However, Patent Document 2-4 is processed at several meters / second in normal hot rolling, does not assume low-speed rolling, and does not localize the heat generation region, so that it is necessary to heat the metal material over a wide range. It has a large heat loss and consumes a large amount of power.

ＷＯ２０１３−０１８７１４WO2013-018714 特開平０９−７１８２２号公報Japanese Unexamined Patent Publication No. 09-71822 特開平１０−１３０７４３号公報Japanese Unexamined Patent Publication No. 10-130743 特開平１０−２３７５５７号公報Japanese Unexamined Patent Publication No. 10-237557 特開２０１６−１３２６１２号公報Japanese Unexamined Patent Publication No. 2016-132612 特開２０１９−１２３６３８号公法Japanese Patent Application Laid-Open No. 2019-123638

そこで、本発明は、金属材料の圧力印加箇所を局所的に加熱しながら低速変形により圧延するジュール熱金属圧延装置に関し、より詳しくは、靭性・高耐熱性の遷移金属炭化物入りタングステン合金の圧延製造に好適なジュール熱金属圧延装置を提供することを目的とする。 Therefore, the present invention relates to a Joule thermometal rolling apparatus that rolls by low-speed deformation while locally heating a pressure-applied portion of a metal material. More specifically, it is a rolling production of a tungsten alloy containing a transition metal carbide having toughness and high heat resistance. It is an object of the present invention to provide a Joule thermometal rolling apparatus suitable for the above.

（１）
金属材料を収納する真空又は不活性ガスが充填される容器と、
前記容器内で前記金属材料の局所を上下から押圧するとともに、前記局所に電流を印加によりジュール加熱する上導電性ロール及び下導電性ロールと、
からなり、
前記金属材料が、粒界すべり変形で圧延されることを特徴とするジュール熱金属圧延装置。
（２）
前記電流を、前記上導電性ロールに通電するための上黒鉛ブラシ及び前記下導電性ロールに通電する下黒鉛ブラシと、前記上黒鉛ブラシに接続する第一電極及び前記下黒鉛ブラシに接続する第二電極を介して印加することを特徴とする（１）に記載のジュール熱金属圧延装置。
（３）
前記導電性が黒鉛又は二ホウ化チタン、或いは二ホウ化チタンと窒化チタン混合物の内から選ばれるいずれか１種であることを特徴とする（１）に記載のジュール熱金属圧延装置。
（４）
前記金属材料が、
遷移金属炭化物入りタングステン合金であることを特徴とする（１）に記載のジュール熱金属圧延装置。
（５）
前記金属材料を、ＩＶＡ族、ＶＡ族又はＶＩＡ族遷移金属の炭化物、窒化物又は酸化物の内から選ばれる１種の金属材料、又は２種以上の合金（タングステン粉末を含むものを除く）である金属材料としたことを特徴とする（１）に記載のジュール熱金属圧延装置。
（６）
ＩＶＡ族、ＶＡ族又はＶＩＡ族遷移金属の炭化物、窒化物又は酸化物の内から選ばれる少なくとも１種の金属材料又は２種以上の合金（タングステン粉末を含むものを除く）である金属材料を、
酸素の含有量が３０００質量ｐｐｍ以下、窒素の含有量が１８０質量ｐｐｍ以下である原料粉末をメカニカルアロイングする工程、前記メカニカルアロイングする工程で得られた原料粉末を熱間等方圧プレスにより焼結する工程を経た後、
（１）に記載のジュール熱金属圧延装置を用いて、
前記焼結する工程で得られた合金を５００℃以上２０００℃以下、１０−５ｓ−１以上１０−２ｓ−１以下の歪速度で、６０％以上の塑性変形を施こすことを特徴とする金属材料の製造方法。
とした。 (1)
A container filled with a vacuum or an inert gas for storing metal materials,
An upper conductive roll and a lower conductive roll that press the local part of the metal material from above and below in the container and heat Joule by applying an electric current to the local part.
Consists of
A Joule thermometal rolling apparatus, characterized in that the metal material is rolled by grain boundary slip deformation.
(2)
The upper graphite brush for energizing the upper conductive roll, the lower graphite brush for energizing the lower conductive roll, the first electrode connected to the upper graphite brush, and the lower graphite brush to connect the current to the lower graphite brush. The Joule thermometal rolling apparatus according to (1), wherein the current is applied via two electrodes.
(3)
The Joule thermometal rolling apparatus according to (1), wherein the conductivity is any one selected from graphite, titanium diboride, or a mixture of titanium diboride and titanium nitride.
(4)
The metal material is
The Joule thermometal rolling apparatus according to (1), which is a tungsten alloy containing a transition metal carbide.
(5)
The metal material is a metal material selected from among carbides, nitrides or oxides of IVA, VA or VIA transition metals, or two or more alloys (excluding those containing tungsten powder). The Joule thermometal rolling apparatus according to (1), wherein a certain metal material is used.
(6)
A metal material selected from carbides, nitrides or oxides of IVA, VA or VIA transition metals, or a metal material which is two or more alloys (excluding those containing tungsten powder).
The raw material powder having an oxygen content of 3000 mass ppm or less and a nitrogen content of 180 mass ppm or less is mechanically alloyed, and the raw material powder obtained in the mechanical alloying step is hot isotropically pressed. After going through the sintering process
Using the Joule thermometal rolling apparatus according to (1),
A metal characterized in that the alloy obtained in the sintering step is subjected to plastic deformation of 60% or more at a strain rate of 500 ° C. or higher and 2000 ° C. or lower, 10-5s-1 or higher and 10-2s-1 or lower. Material manufacturing method.
And said.

本発明は以上の構成であるので、金属材料の圧力印加箇所を局所的に加熱しながら低速変形により圧延するジュール熱金属圧延装置であって、例えば、靭性・高耐熱性の遷移金属炭化物入りタングステン合金の圧延製造に好適なジュール熱金属圧延装置を提供できる。タングステン合金の他、同様の機構、粒界すべり現象で圧延できる金属材料に適用することができる。 Since the present invention has the above configuration, it is a Joule thermometal rolling apparatus that rolls by low-speed deformation while locally heating a pressure-applied portion of a metal material. For example, tungsten containing a transition metal carbide having toughness and high heat resistance. A Joule thermometal rolling apparatus suitable for rolling and manufacturing an alloy can be provided. In addition to tungsten alloys, it can be applied to metal materials that can be rolled by the same mechanism and grain boundary slip phenomenon.

他の金属材料としては、ＩＶＡ族、ＶＡ族又はＶＩＡ族遷移金属の炭化物の内から選ばれる１種又は２種以上の合金などが例示できる。その場合、金属原料をメカニカルアロイングする工程、前記メカニカルアロイングする工程で得られた原料粉末を熱間等方圧プレスにより焼結する工程、前記焼結する工程で得られた合金を、本発明の装置によって、５００℃以上２０００℃以下、１０−５ｓ−１以上１０−２ｓ−１以下の歪速度で、６０％以上の塑性変形を施す工程を経て、高温での粒界すべりを利用して超低速圧延を行う。 Examples of other metal materials include one or more alloys selected from carbides of group IVA, group VA or group VIA transition metals. In that case, the step of mechanically rolling the metal raw material, the step of sintering the raw material powder obtained in the step of mechanical alloying by a hot isotropic press, and the step of sintering the alloy obtained in the step of sintering are obtained. By the apparatus of the present invention, the grain boundary slip at high temperature is utilized through the step of performing plastic deformation of 60% or more at a strain rate of 500 ° C. or higher and 2000 ° C. or lower, 10-5s-1 or higher and 10-2s-1 or lower. And perform ultra-low speed rolling.

本発明のジュール熱金属圧延装置であれば、適用できる金属材料の大きさは、容器寸法による制限のみで原理的に長さ方向には制限なく製造可能である。二軸送りを採用すれば、厚さ方向にも制限なく製造可能である。 In the Joule thermometal rolling mill of the present invention, the size of the applicable metal material is limited only by the container size, and in principle, it can be manufactured without limitation in the length direction. If biaxial feed is adopted, it can be manufactured without limitation in the thickness direction.

そして、従来技術（引用文献２）にくらべ、本発明のジュール熱金属圧延装置は、発熱領域を上下圧延ロール部で押圧される部分に局所化でき、消費電力を従来技術に比べ飛躍的に低減（１／１０ 程度以下）させることができる。さらに往復圧延が可能であるので、製品の圧延精度や製品組成の一様性を高めることができる。 Further, as compared with the prior art (Reference 2), the Joule thermometal rolling apparatus of the present invention can localize the heat generating region to the portion pressed by the vertical rolling roll portion, and the power consumption is dramatically reduced as compared with the prior art. (About 1/10 or less) can be achieved. Further, since reciprocating rolling is possible, the rolling accuracy of the product and the uniformity of the product composition can be improved.

図１は、本発明のジュール熱金属圧延装置の説明模式図である。容器２ａは説明上、前後の面を取り除き、胴周を一部切欠き開放状態で描かれているが、実際は密閉され、高真空状態（５×１０−１Ｐａ以下）に減圧される。または容器２ａに不活性ガスを充填してもよい。FIG. 1 is an explanatory schematic view of the Joule thermometal rolling mill of the present invention. For the sake of explanation, the container 2a is drawn with the front and rear surfaces removed and the waist circumference partially cut out and open, but it is actually sealed and the pressure is reduced to a high vacuum state (5 × 10 -1 Pa or less). Alternatively, the container 2a may be filled with an inert gas.

以下、添付の図面を参照し、本発明の実施の形態について詳細に説明する。なお、本発明は下記形態例に限定されるものではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the following examples.

図１に示すように、本発明であるジュール熱金属圧延装置１は、容器ユニット２と、架台４に設置され容器２ａ内で金属材料１３を加熱しながら圧延する加熱圧延ユニット５とからなり、金属材料１３は、加熱圧延ユニット５により、長時間の局所的な、高温（好ましくは５００℃以上２０００℃以下、１０−５ｓ−１以上１０−２ｓ−１以下の歪速度で、６０％以上の塑性変形を施す工程によって金属材料の高温での粒界すべりを利用して超低速圧延される。 As shown in FIG. 1, the Joule thermometal rolling apparatus 1 of the present invention comprises a container unit 2 and a heating and rolling unit 5 which is installed on a gantry 4 and rolls a metal material 13 while heating in the container 2a. The metal material 13 is subjected to a heating and rolling unit 5 at a local, high temperature (preferably 500 ° C. or higher and 2000 ° C. or lower, 10-5s-1 or higher and 10-2s-1 or lower) strain rate of 60% or more for a long time. By the process of plastic deformation, ultra-low speed rolling is performed by utilizing the grain boundary slip of the metal material at high temperature.

容器ユニット２は、ホールド１４に保持されつつ圧延される金属材料１３を収納する容器２ａと、容器２ａが真空の場合には容器２ａを高真空状態に減圧するポンプ及び配管などを含む排気系２ｂと、排気系２ｂに設けられた容器２ａ内の真空度を計測する真空計２ｃと、容器２ａ内を視認できる覗き窓２ｄ、２ｄとからなる。他方、容器２ａに不活性ガスを充填する場合には、真空に必要な部品は備えなくてもよい。 The container unit 2 includes a container 2a for storing the metal material 13 to be rolled while being held by the hold 14, and an exhaust system 2b including a pump and a pipe for reducing the pressure of the container 2a to a high vacuum state when the container 2a is in a vacuum. A vacuum gauge 2c for measuring the degree of vacuum in the container 2a provided in the exhaust system 2b, and viewing windows 2d and 2d for visually recognizing the inside of the container 2a. On the other hand, when the container 2a is filled with the inert gas, it is not necessary to provide the parts necessary for vacuuming.

容器２ａには、内部に連通する複数の孔２ｅを備え、孔２ｅを挿通して容器２ａ内部に、各種機能を保持する。なお、真空とは、ここでは５×１０−１Ｐａ以下の高真空状態をいう。さらに、１つの覗き穴２ｄには内部温度を測定する輻射温度計３が向けられる。 The container 2a is provided with a plurality of holes 2e communicating with the inside, and various functions are held inside the container 2a through the holes 2e. The vacuum here means a high vacuum state of 5 × 10 -1 Pa or less. Further, a radiation thermometer 3 for measuring the internal temperature is directed to one peephole 2d.

加熱圧延ユニット５は、上下押圧ユニットから構成される。
上押圧ユニットは、容器２ａの孔２ｅを気密的に貫通する上シャフト８と、容器２ａの内部に位置する上シャフト８の先端に上黒鉛ブラシ９と接触しつつ回転可能取り付けられた上黒鉛ロール１０と、上黒鉛ロール１０を回転させる上駆動軸１１と、上黒鉛ブラシ９に通電する第一電極１２とからなる。上下黒鉛ロール１０、１１に代えて、上下二ホウ化チタン（ＴｉＢ２）ロール、或いは二ホウ化チタンと窒化チタン（ＴｉＮ）の混合物ロールとすることができる。二ホウ化チタンについては焼結用金型であるが特許文献５に、二ホウ化チタンと窒化チタンの混合物は同様に焼結用金型であるが特許文献６に製造方法が公開されている。 The heat rolling unit 5 is composed of a vertical pressing unit.
The upper pressing unit includes an upper shaft 8 that airtightly penetrates the hole 2e of the container 2a, and an upper graphite roll that is rotatably attached to the tip of the upper shaft 8 located inside the container 2a while being in contact with the upper graphite brush 9. It is composed of 10, an upper drive shaft 11 for rotating the upper graphite roll 10, and a first electrode 12 for energizing the upper graphite brush 9. Instead of the upper and lower graphite rolls 10 and 11, an upper and lower titanium diboride (TiB 2 ) roll or a mixture roll of titanium diboride and titanium nitride (TiN) can be used. Titanium diboride is a die for sintering, but Patent Document 5 discloses a manufacturing method in Patent Document 5, although a mixture of titanium diboride and titanium nitride is also a die for sintering. ..

なお、上シャフト８の上方は、圧力受けがある（図示省略）。他方、金属材料１３へ印加する圧力加圧装置を備えてもよい。 There is a pressure receiver above the upper shaft 8 (not shown). On the other hand, a pressure pressurizing device that applies pressure to the metal material 13 may be provided.

下押圧ユニットは、架台４に保持される圧力印加装置５ａと、金属材料１３へ印加された圧力を計測する加重測定装置６及び圧力印可による金属材料の変形に伴って移動する圧力印可装置５ａの変位を吸収する蛇腹７を介して加圧印加装置５ａに接続するとともに容器２ａの孔を気密的に貫通する上下動可能な下シャフト８ａと、容器２ａの内部に位置する下シャフト８ａの先端に下黒鉛ブラシ９ａと接触しつつ回転可能に取り付けられた下黒鉛ロール１０ａと、下黒鉛ロール１０ａを回転させる下駆動軸１１ａと、下黒鉛ブラシ９ａに通電する第二電極１２ａとからなる。 The lower pressing unit includes a pressure applying device 5a held on the gantry 4, a weight measuring device 6 for measuring the pressure applied to the metal material 13, and a pressure applying device 5a that moves with deformation of the metal material due to pressure applying. At the tip of the lower shaft 8a, which is connected to the pressurizing application device 5a via the bellows 7 that absorbs the displacement and can move up and down through the hole of the container 2a in an airtight manner, and the lower shaft 8a located inside the container 2a. It is composed of a lower graphite roll 10a rotatably attached while in contact with the lower graphite brush 9a, a lower drive shaft 11a for rotating the lower graphite roll 10a, and a second electrode 12a for energizing the lower graphite brush 9a.

このようにしてなる、上下押圧ユニットの上下黒鉛ロール１０ａ、１０ａで、金属材料１３を挟み、ホールド１４で保持、水平を維持しつつ、圧力印加装置５ａで金属材料１３に圧力を付加する。上下黒鉛ロール１０、１０ａは正逆転可能である。 The metal material 13 is sandwiched between the upper and lower graphite rolls 10a and 10a of the vertical pressing unit, held by the hold 14, and maintained horizontal, while the pressure applying device 5a applies pressure to the metal material 13. The upper and lower graphite rolls 10 and 10a can be forward-reversed.

上下ロール、上下ブラシを黒鉛とすることで、電極供給および圧力印可の効果がある。それらについて、その他の素材も、金属材料１３の種類に応じて、電極供給および圧力印可が可能であれば採用できる。上下黒鉛ロール１０、１０ａに直接通電することなく、上限黒鉛ブラシ９、９ａを介して通電する理由は、圧延動作によって回転する黒鉛ロールに通電するためである。 By using graphite for the upper and lower rolls and upper and lower brushes, there is an effect of electrode supply and pressure application. Regarding them, other materials can also be adopted as long as electrode supply and pressure application are possible, depending on the type of the metal material 13. The reason why the upper and lower graphite rolls 10 and 10a are not directly energized but are energized through the upper limit graphite brushes 9 and 9a is that the graphite rolls that rotate by the rolling operation are energized.

高温で高靭性な黒鉛製の圧延ロール（上下黒鉛ロール１０、１０ａ）に、上下黒鉛ブラシ９、９ａを介して電流印可を行うことで、金属材料、例えば、タングステン合金に局所的に高温を発生、維持するとともに、低速圧延動作による変形を加える事によって、広範囲にわたって粒界すべり処理を施すことが出来るようになる。 By applying a current to a high-temperature and tough graphite rolling roll (upper and lower graphite rolls 10 and 10a) via upper and lower graphite brushes 9 and 9a, a high temperature is locally generated on a metal material, for example, a tungsten alloy. By maintaining and deforming due to the low-speed rolling operation, it becomes possible to apply the grain boundary slip treatment over a wide range.

また、通電発熱する上下黒鉛ロール１０、１０ａを採用することで、加熱領域を局所化することができ、消費電力を特許文献２−４に比べ、１／１０に低減することができる。 Further, by adopting the upper and lower graphite rolls 10 and 10a that generate heat by energization, the heating region can be localized, and the power consumption can be reduced to 1/10 as compared with Patent Document 2-4.

１ ジュール熱金属圧延装置
２ 容器ユニット
２ａ 容器
２ｂ 排気系
２ｃ 真空計
２ｄ 覗き穴
２ｅ 孔
３ 輻射温度計
４ 架台
５ 圧延ユニット
５ａ 圧力印加装置
６ 加重測定装置
７ 蛇腹
８ 上シャフト
８ａ 下シャフト
９ 上黒鉛ブラシ
９ａ 下黒鉛ブラシ
１０ 上黒鉛ロール
１０ａ 下黒鉛ロール
１１ 上駆動軸
１１ａ 下駆動軸
１２ 第一電極
１２ａ 第二電極
１３ 金属材料
１４ ホールド 1 Joule thermometal rolling device 2 Container unit 2a Container 2b Exhaust system 2c Vacuum gauge 2d Peep hole 2e Hole 3 Radiation thermometer 4 Mount 5 Rolling unit 5a Pressure application device 6 Weight measuring device 7 Bellows 8 Upper shaft 8a Lower shaft 9 Upper graphite Brush 9a Lower graphite brush 10 Upper graphite roll 10a Lower graphite roll 11 Upper drive shaft 11a Lower drive shaft 12 First electrode 12a Second electrode 13 Metal material 14 Hold

Claims (6)

金属材料を収納する真空又は不活性ガスが充填される容器と、
前記容器内で前記金属材料の局所を上下から押圧するとともに、前記局所に電流を印加によりジュール加熱する上導電性ロール及び下導電性ロールと、
からなり、
前記金属材料が、粒界すべり変形で圧延されることを特徴とするジュール熱金属圧延装置。 A container filled with a vacuum or an inert gas for storing metal materials,
An upper conductive roll and a lower conductive roll that press the local part of the metal material from above and below in the container and heat Joule by applying an electric current to the local part.
Consists of
A Joule thermometal rolling apparatus, characterized in that the metal material is rolled by grain boundary slip deformation. 前記電流を、前記上導電性ロールに通電するための上黒鉛ブラシ及び前記下導電性ロールに通電する下黒鉛ブラシと、前記上黒鉛ブラシに接続する第一電極及び前記下黒鉛ブラシに接続する第二電極を介して印加することを特徴とする請求項１に記載のジュール熱金属圧延装置。 The upper graphite brush for energizing the upper conductive roll, the lower graphite brush for energizing the lower conductive roll, the first electrode connected to the upper graphite brush, and the lower graphite brush to connect the current to the lower graphite brush. The Joule thermometal rolling apparatus according to claim 1, wherein the current is applied via two electrodes. 前記導電性が黒鉛又は二ホウ化チタン、或いは二ホウ化チタンと窒化チタン混合物の内から選ばれるいずれか１種であることを特徴とする請求項１に記載のジュール熱金属圧延装置。 The Joule thermometal rolling apparatus according to claim 1, wherein the conductivity is any one selected from graphite, titanium diboride, or a mixture of titanium diboride and titanium nitride. 前記金属材料が、
遷移金属炭化物入りタングステン合金であることを特徴とする請求項１に記載のジュール熱金属圧延装置。 The metal material is
The Joule thermometal rolling apparatus according to claim 1, wherein the tungsten alloy contains a transition metal carbide. 前記金属材料を、ＩＶＡ族、ＶＡ族又はＶＩＡ族遷移金属の炭化物、窒化物又は酸化物の内から選ばれる１種の金属材料、又は２種以上の合金（タングステン粉末を含むものを除く）である金属材料としたことを特徴とする請求項１に記載のジュール熱金属圧延装置。 The metal material is a metal material selected from among carbides, nitrides or oxides of IVA, VA or VIA transition metals, or two or more alloys (excluding those containing tungsten powder). The Joule thermal metal rolling apparatus according to claim 1, wherein a certain metal material is used. ＩＶＡ族、ＶＡ族又はＶＩＡ族遷移金属の炭化物、窒化物又は酸化物の内から選ばれる少なくとも１種の金属材料又は２種以上の合金（タングステン粉末を含むものを除く）である金属材料を、
酸素の含有量が３０００質量ｐｐｍ以下、窒素の含有量が１８０質量ｐｐｍ以下である原料粉末をメカニカルアロイングする工程、前記メカニカルアロイングする工程で得られた原料粉末を熱間等方圧プレスにより焼結する工程を経た後、
請求項１に記載のジュール熱金属圧延装置を用いて、
前記焼結する工程で得られた合金を５００℃以上２０００℃以下、１０−５ｓ−１以上１０−２ｓ−１以下の歪速度で、６０％以上の塑性変形を施こすことを特徴とする金属材料の製造方法。 A metal material selected from carbides, nitrides or oxides of IVA, VA or VIA transition metals, or a metal material which is two or more alloys (excluding those containing tungsten powder).
The raw material powder having an oxygen content of 3000 mass ppm or less and a nitrogen content of 180 mass ppm or less is mechanically alloyed, and the raw material powder obtained in the mechanical alloying step is hot isotropically pressed. After going through the sintering process
Using the Joule thermometal rolling apparatus according to claim 1,
A metal characterized in that the alloy obtained in the sintering step is subjected to plastic deformation of 60% or more at a strain rate of 500 ° C. or higher and 2000 ° C. or lower, 10-5s-1 or higher and 10-2s-1 or lower. Material manufacturing method.
JP2019220774A 2019-12-05 2019-12-05 Joule heat metal rolling device Pending JP2021087985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019220774A JP2021087985A (en) 2019-12-05 2019-12-05 Joule heat metal rolling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019220774A JP2021087985A (en) 2019-12-05 2019-12-05 Joule heat metal rolling device

Publications (1)

Publication Number Publication Date
JP2021087985A true JP2021087985A (en) 2021-06-10

Family

ID=76218934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019220774A Pending JP2021087985A (en) 2019-12-05 2019-12-05 Joule heat metal rolling device

Country Status (1)

Country Link
JP (1) JP2021087985A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959806A (en) * 1982-09-29 1984-04-05 Toshiba Corp Sintered tungsten body
JPS62196305A (en) * 1986-02-20 1987-08-29 Ishikawajima Harima Heavy Ind Co Ltd Working device for metallic thin sheet
JPH02115302A (en) * 1988-10-26 1990-04-27 Ishikawajima Harima Heavy Ind Co Ltd Method and apparatus for manufacturing plate by powder rolling
JPH09268302A (en) * 1996-03-29 1997-10-14 Hiroshima Pref Gov Sangyo Gijutsu Shinko Kiko Production of continuous sintered body utilizing direct conducting
JP2007123467A (en) * 2005-10-27 2007-05-17 Honda Motor Co Ltd Method for manufacturing anisotropic magnet
WO2013018714A1 (en) * 2011-07-29 2013-02-07 国立大学法人東北大学 Method for manufacturing alloy containing transition metal carbide, tungsten alloy containing transition metal carbide, and alloy manufactured by said method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959806A (en) * 1982-09-29 1984-04-05 Toshiba Corp Sintered tungsten body
JPS62196305A (en) * 1986-02-20 1987-08-29 Ishikawajima Harima Heavy Ind Co Ltd Working device for metallic thin sheet
JPH02115302A (en) * 1988-10-26 1990-04-27 Ishikawajima Harima Heavy Ind Co Ltd Method and apparatus for manufacturing plate by powder rolling
JPH09268302A (en) * 1996-03-29 1997-10-14 Hiroshima Pref Gov Sangyo Gijutsu Shinko Kiko Production of continuous sintered body utilizing direct conducting
JP2007123467A (en) * 2005-10-27 2007-05-17 Honda Motor Co Ltd Method for manufacturing anisotropic magnet
WO2013018714A1 (en) * 2011-07-29 2013-02-07 国立大学法人東北大学 Method for manufacturing alloy containing transition metal carbide, tungsten alloy containing transition metal carbide, and alloy manufactured by said method

Similar Documents

Publication Publication Date Title
CN106062235B (en) The method for being used to prepare molybdenum or the band containing molybdenum
Yoshida et al. Low temperature and high strain rate superplastic flow in structural ceramics induced by strong electric-field
CN103849803B (en) Tantalum alloy and method for preparing tantalum alloy tube
CN110577399B (en) Multi-field coupling flash sintering system based on induction heating
WO2013104295A1 (en) Molybdenum-niobium alloy plate target material processing technique
CN103849788B (en) The preparation method of tantalum blank or tantalum alloy blank
KR20130015396A (en) Manufacturing method of wc sintered-body for friction stir welding(fsw) tool
Abedi et al. Spark plasma sintering of titanium spherical particles
CN111360072A (en) Rolling equipment based on high-frequency current assistance and high-reduction rolling method
CN110170527A (en) A kind of preparation method of the porous laminated titanium aluminium alloy sheet of high niobium
CN111020331B (en) Method for improving strength and plasticity of TZM bar
JP2021087985A (en) Joule heat metal rolling device
CN107282929B (en) Fiber alignment enhances composite material by electric current direct heating powder hot extrusion preparation method and device
CN104561638B (en) A kind of Al2O3The preparation method of dispersed and strengthened copper-based composite material
WO2022082976A1 (en) Friction roller action-based composite belt different-temperature rolling method and device
CN104593572B (en) A kind of full-compact nanometer crystalline pure iron block materials preparation method
JP3521290B2 (en) Molybdenum thick bar and method for producing the same
Shao et al. Microstructure and finite element analysis of hot continuous rolling of doped tungsten rod
CN212944653U (en) Contact type on-line heating constant-temperature rolling system for metal plate and strip
JPH01130802A (en) Method for continuously manufacturing thin sheet of hard-to-work material
Martynenko et al. Increase in the strength and electrical conductivity of a Cu–0.8 Hf alloy after rotary swaging and subsequent aging
CN106244961B (en) A kind of preparation method of large-diameter seamless high intensity silver-bearing copper conduction materials in the tube
CN114750265B (en) Ceramic rolling device and method
CN104759239A (en) Synthesis method and synthesis cavity of large-diameter polycrystalline diamond composite sheet
JP2012209085A (en) Discharge plasma sintering device

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20220425

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20220829

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220830

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230606

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230613

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20231205