JPS6210201A - Heat pressing device for executing electrical heating and mechanical pressing and manufacture thereby - Google Patents
Heat pressing device for executing electrical heating and mechanical pressing and manufacture therebyInfo
- Publication number
- JPS6210201A JPS6210201A JP14663685A JP14663685A JPS6210201A JP S6210201 A JPS6210201 A JP S6210201A JP 14663685 A JP14663685 A JP 14663685A JP 14663685 A JP14663685 A JP 14663685A JP S6210201 A JPS6210201 A JP S6210201A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- hard
- heating
- insulating film
- electrically insulating
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 80
- 238000003825 pressing Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims 2
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 238000005245 sintering Methods 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 3
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract 7
- 239000000843 powder Substances 0.000 claims abstract 6
- 239000003575 carbonaceous material Substances 0.000 claims abstract 4
- 229910021385 hard carbon Inorganic materials 0.000 claims abstract 4
- 230000005611 electricity Effects 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 7
- 238000010292 electrical insulation Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 4
- 229910019142 PO4 Inorganic materials 0.000 claims 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 3
- 239000010452 phosphate Substances 0.000 claims 3
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 238000009413 insulation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 8
- 239000010941 cobalt Substances 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、シリンダーに対向したピストンを組合わせて
、加熱と加圧とを同時に行う加熱加圧プレス装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating and pressing press device that combines a cylinder and a piston facing each other to simultaneously perform heating and pressurization.
本発明は、シリンダーに対向ピストンを組合わせて構成
した加熱加圧室内に装填した焼結用原料を加熱する方法
として対向ピストンを通じて供給する電気を用いて加熱
する加熱加圧プレス装置に関するものである。The present invention relates to a heating and pressurizing press device that heats sintering raw materials loaded in a heating and pressurizing chamber configured by combining a cylinder and an opposing piston using electricity supplied through an opposing piston. .
本発明は、加熱加圧室内に装填した焼結用原料を加熱す
るにあたり、対向ピストンを通じて供給する電気を焼結
用原料に直接に通電して焼結用原料を電気により直接加
熱を行うか、或は、加熱加圧室内に配置した電気抵抗発
熱体に通電して、其の電気抵抗発熱体に発生した熱をも
って加熱加圧室内に装填した焼結用原料を、電気による
間接加熱を行うようにした加熱加圧プレス装置に関する
ものである。In the present invention, when heating the sintering raw material loaded in the heating and pressurizing chamber, the sintering raw material is directly heated by electricity by directly applying electricity supplied through the opposed piston to the sintering raw material, or Alternatively, an electric resistance heating element placed in the heating and pressurizing chamber is energized, and the heat generated by the electric resistance heating element is used to indirectly heat the sintering raw material loaded in the heating and pressurizing chamber by electricity. The present invention relates to a heating and pressurizing press device.
本発明は、シリンダーの円筒状内側面に対向ピストンの
円柱状外側面を面接して、シリンダーに対向ピストンを
組合わせたプレス装置において、対向ピストンの外方端
部より供給する電気がシリンダーに流れることを防止す
るために、シリンダーの円筒状内側面に電気絶縁皮膜を
被覆し、或は、シリンダーの円筒状内側面と対向ピスト
ンの円柱状外側面とに電気絶縁皮膜を被覆して、対向ピ
ストンの外方端部より供給する電気が、対向ピストンの
対向面の間の反応室内に装填した焼結用原料にのみ流通
し、或は、対向ピストンの対向面の間の反応室内に配置
した電気抵抗発熱体にのみ流通するように電気通路を形
成して、通電直接加熱を行うか、或は、通電間接加熱を
行うようにした機構を特徴とする通電加熱と機械加圧を
行う加熱加圧プレス装置に関するものである。The present invention provides a press device in which the cylindrical inner surface of the cylinder faces the cylindrical outer surface of the opposing piston, and electricity supplied from the outer end of the opposing piston flows into the cylinder. In order to prevent this, the cylindrical inner surface of the cylinder is coated with an electrically insulating film, or the cylindrical inner surface of the cylinder and the cylindrical outer surface of the opposing piston are coated with an electrically insulating film. The electricity supplied from the outer end of the counter piston flows only to the sintering raw material loaded in the reaction chamber between the opposing surfaces of the opposing pistons, or the electricity supplied from the outer end of the Heating and pressurization that performs electrical heating and mechanical pressure, characterized by a mechanism in which an electrical path is formed so that it flows only through the resistance heating element, and electrical current direct heating or electrical indirect heating is performed. This relates to a press device.
以上に説明したように、本発明の通電加熱と機械加圧を
行う加熱加圧プレス装置は、超硬質炭化タングステン系
合金のような高い硬度と強い耐圧力とを有する材料を用
いて内側面を円筒状に成形したシリンダーに、超硬質タ
ングステン系合金のような高い硬度と強い耐圧力とを有
する材料を用いて円柱状に成形したピストンの２個を対
向した状態にて組合わせたピストン−シリンダー型プレ
ス装置であって、其のシリンダーの円筒状内側面とピス
トンの円柱状外側面とに電気絶縁皮膜を被覆するか、或
は、シリンダーの円筒状内側面にのみ電気絶縁皮膜を被
覆しておいて。対向ピストンとシリンダーとの間に電気
の流通を遮断して、対向ピストンより供給する交流電気
または直流電気を対向ピストンの対向面とシリンダーの
内側面とをもって囲んでいる加熱加圧室内に供給するよ
うにし、其の反応室内に装填した焼結用原料に直接に通
電して焼結用原料を加熱するか、または、其の反応室内
に配置した電気抵抗発熱体に通電して其の電気抵抗発熱
体を発生した熱をもって其の加熱加圧室内に装填した焼
結用原料を加熱し、同時にピストンは外部より加えられ
た圧力を加熱加圧室内に装填している焼結用原料に伝達
して、其の焼結用原料を加圧して加熱加圧室内に装填し
た焼結用原料を加熱加圧する装置である。従来使用され
ている焼結用原料を加熱加圧する装置は、シリンダーの
外周に高周波電気回路を設けて其のシリンダーの内側に
装填した焼結用原料を誘導加熱により加熱するように構
成したプレス装置であるから、シリンダーの外周に補強
環を嵌合することは不可能であった。本発明の加熱加圧
プレス装置は、前記のように対向ピストンより、其の対
向ピストンの対向面の間の加熱加圧室内に通常の交流電
気または直流電気を供給して加熱加圧室内に装填してい
る焼結用原料を加熱する装置であるから、シリンダーの
外側面に補強環を幾重にも嵌合して、′超高圧の内圧に
も耐えて焼結用原料に超高圧を加えると共に通常の交流
電気または直流電気を使用する加熱を行うことができる
のである。As explained above, the heating and pressing press device that performs electrical heating and mechanical pressing of the present invention uses a material with high hardness and strong pressure resistance, such as an ultra-hard tungsten carbide alloy, to form the inner surface. A piston-cylinder in which two cylindrical pistons made of a material with high hardness and strong pressure resistance, such as ultra-hard tungsten alloy, are combined in opposing positions into a cylindrical cylinder. A die press device in which the cylindrical inner surface of the cylinder and the cylindrical outer surface of the piston are coated with an electrically insulating film, or only the cylindrical inner surface of the cylinder is coated with an electrically insulating film. Leave it behind. Electricity is cut off between the opposing piston and the cylinder, and AC or DC electricity supplied from the opposing piston is supplied into a heating and pressurizing chamber surrounded by the opposing surface of the opposing piston and the inner surface of the cylinder. Then, the raw material for sintering loaded in the reaction chamber is heated by directly applying electricity to the raw material for sintering, or the raw material for sintering is heated by applying electricity to an electric resistance heating element placed in the reaction chamber. The heat generated by the piston heats the sintering raw material loaded in the heating and pressurizing chamber, and at the same time, the piston transmits the pressure applied from the outside to the sintering raw material loaded in the heating and pressurizing chamber. This is a device that pressurizes the sintering raw material and heats and presses the sintering raw material loaded into a heating and pressurizing chamber. The conventionally used device for heating and pressurizing sintering raw materials is a press device that is configured to heat the sintering raw materials loaded inside the cylinder by induction heating by installing a high-frequency electric circuit around the outer circumference of the cylinder. Therefore, it was impossible to fit a reinforcing ring around the outer periphery of the cylinder. As described above, the heating and pressurizing press device of the present invention supplies ordinary AC or DC electricity from the opposed pistons to the heating and pressurizing chamber between the opposing surfaces of the opposing pistons, and is loaded into the heating and pressurizing chamber. Since this equipment heats the raw material for sintering, a number of reinforcing rings are fitted to the outer surface of the cylinder to withstand ultra-high internal pressure and apply ultra-high pressure to the raw material for sintering. Heating can be done using regular AC or DC electricity.
本発明の目的は、超高圧を使用する加圧作業を行うこと
ができると共に、電気料金が安い通常の交流電気または
直流電気を直接に使用して加熱作業を行うことのできる
通電加熱と機械加圧を行う加熱加圧プレス装置を提しよ
うとするものである。The object of the present invention is to provide electrical heating and mechanical heating, which can perform pressurizing work using ultra-high pressure, and which can also perform heating work directly using ordinary AC or DC electricity, which has low electricity costs. The present invention is intended to provide a heating and pressurizing press device for applying pressure.
次に、本発明の通電加熱と機械加圧を行う加熱加圧プレ
ス装置の一実施例について図面により説明する。Next, an embodiment of the heating and pressing press apparatus that performs electrical heating and mechanical pressing according to the present invention will be described with reference to the drawings.
第１図は、本発明の通電加熱と機械加圧を行う加熱加圧
プレス装置の加熱加圧機構部分を図示したものである。FIG. 1 illustrates a heating and pressing mechanism portion of a heating and pressing press apparatus that performs electrical heating and mechanical pressing according to the present invention.
シリンダー１は炭化タングステン−コバルト焼結合金を
用いて内側面を円筒状に形成したシリンダーであって、
其のシリンダー１の円筒状内側面に被覆した皮膜２は、
Ｃｖｌ）法によって炭化タングステン−コバルト焼結合
金に強く接着する炭化チタン皮膜を下被覆して其の上に
電気絶縁皮膜とするアルミナ皮膜を被覆したものである
。補強環６はシリンダー１の外側面に、強靭鋼を用いて
環状に成形した環状体を嵌合した補強環であって、斯様
な補強環を幾重にも嵌合して超高圧の焼結用圧力を使用
できるように構成することができる。ピストン４と５と
は、炭化タングステン−コバルト焼結合金を用いて外側
面を円柱状に形成したピストンであって、其のピストン
の円柱状外側面に被覆した皮膜６と７とは、ＣＶＤ法に
よって炭化タングステン−コバルト焼結合金の面に強く
結合する炭化チタン皮膜を下被覆して炭化チタン皮膜を
形成し、其の炭化チタン皮膜の上にアルミナ皮膜を被覆
して電気絶縁皮膜を被覆したものであって、斯様に電気
絶縁皮膜を被覆したピストン４と５とを対向した状態で
シリンダー１の内側面に面接して組合わせてあり、また
、其の対向ピストンのうちのピストン４は、其のピスト
ン把持体８の上部をプレス本体フレームの上部分の内側
に電気絶縁板を挾んで電気の流通を遮断した状態にて結
合し、ピストン５は、其のピストン把持体９の下部をプ
レス本体フレームの下部分の内側に設定した油圧プレス
のラムに電気絶縁板を挾んで電気の流通を遮断した状態
にて結合して、対向ピストン４と５とより供給される電
気がシリンダー１へ流れることを防止する。斯様に対向
ピストン４と５とをシリンダー１に組合わせた状態にあ
るシリンダー１は、対向ピストン４と５との対向中央部
に位置するように発条を用いてプレス本体フレームに支
持しておくものである。The cylinder 1 is a cylinder whose inner surface is formed into a cylindrical shape using a tungsten carbide-cobalt sintered alloy,
The coating 2 coated on the cylindrical inner surface of the cylinder 1 is
A titanium carbide film that strongly adheres to the tungsten carbide-cobalt sintered alloy is undercoated by the Cvl method, and an alumina film serving as an electrically insulating film is coated thereon. The reinforcing ring 6 is a reinforcing ring in which an annular body formed into an annular shape using strong steel is fitted onto the outer surface of the cylinder 1, and such reinforcing rings are fitted in multiple layers and sintered under ultra-high pressure. It can be configured so that it can use pressure. The pistons 4 and 5 are pistons whose outer surfaces are formed into cylindrical shapes using a tungsten carbide-cobalt sintered alloy, and the coatings 6 and 7 coated on the cylindrical outer surfaces of the pistons are formed using a CVD method. A titanium carbide film is formed by undercoating a titanium carbide film that strongly bonds to the surface of a tungsten carbide-cobalt sintered alloy, and then an alumina film is coated on top of the titanium carbide film to cover an electrically insulating film. The pistons 4 and 5 coated with an electrically insulating film in this manner are combined so as to face the inner surface of the cylinder 1, and the piston 4 of the opposed pistons is The upper part of the piston holder 8 is connected to the inside of the upper part of the press body frame with an electric insulating plate interposed between them to cut off the flow of electricity, and the piston 5 presses the lower part of the piston holder 9. It is connected to the ram of a hydraulic press set inside the lower part of the main body frame with an electric insulating plate interposed between them to cut off the flow of electricity, and electricity supplied from opposing pistons 4 and 5 flows to cylinder 1. prevent this from happening. The cylinder 1 in which the opposed pistons 4 and 5 are combined in the cylinder 1 is supported on the press body frame using a spring so as to be located in the center opposite to the opposed pistons 4 and 5. It is something.
第２図は、第１図におけるシリンダー１に対向ピストン
４と５とを組合わせて構成した加熱加圧プレス装置にお
いて、シリンダー１の円筒状内側面に被覆した電気絶縁
皮膜２の内側面と対向ピストン４と５との対向面とによ
り囲まれている加熱加圧室内に装填した焼結用原料１５
を加熱加圧する機構を説明する図面である。対向ピスト
ン４と５との間にあってシリンダー１の円筒状内側面に
被覆している電気絶縁皮膜２の内側面に面接している円
筒状の容器１０は、電気絶縁性と耐熱性を有し、且つ熱
伝導率の悪いジルコニア材を用いて円筒状に成形した容
器でアリ、其の容器１０の内側の上部と下部とにあって
対向ピストン４と５との対向面に面接している金属環１
３と１４とは、ニッケル等の融点が高く電気良導体であ
る金属を環状に成形した金属環であって加熱加圧室内に
装填した焼結用原料１５に対向ピストン４と５とより交
流電気または直流電気を直接に通電する機能を有するも
のであシ、其の金属環１３と１４との夫々の内側にあっ
て対向ピストン４と５との対向面に面接している円板１
１と１２とはジルコニア材を用いて円板状に成形した円
板であって、金属環とは同心円状体を構成して容器１０
内に装填した焼結用原料の上面と下面とを押えている上
蓋と下蓋とを形成している。斯様な機構を構成している
加熱加圧プレス装置において、対向ピストン４と５とよ
り供給される交流電気または直流電気は、シリンダー１
の内側面に被覆している電気絶縁皮膜２と対向ピストン
４と５との円柱状外側面に被覆している電気絶縁皮膜６
と７とにより、または、対向ピストン４と５との円柱状
外側面には電気絶縁皮膜を被覆していないでシリンダー
１の内側面に被覆している電気絶縁皮膜２が電気の流通
を遮断して、対向ピストン４と５との対向面に面接して
いる金属環１３と１４とを通過して焼結用原料１５へ直
接に通電して、其の焼結用原料を直接に加熱する。其の
加熱と共に、下部ピストン５は、其の、ピストンを結合
しているピストン把持体９がプレス本体フレームの下部
分の内側に設定しある油圧プレスのラムにより加圧され
、其の加圧された圧力をピストン把持体９より下部ピス
トン５へ伝達して、其の伝達された圧力を下部ピストン
５が焼結用原料１５へ伝達して焼結用原料を加圧する。FIG. 2 shows the inner surface of the electrically insulating film 2 coated on the cylindrical inner surface of the cylinder 1 and the opposing pistons in a heating and pressurizing press device constructed by combining the cylinder 1 and opposed pistons 4 and 5 in FIG. 1. Sintering raw material 15 loaded into a heating and pressurizing chamber surrounded by the opposing surfaces of pistons 4 and 5
It is a drawing explaining a mechanism for heating and pressurizing. A cylindrical container 10, which is located between the opposed pistons 4 and 5 and faces the inner surface of the electrically insulating film 2 covering the cylindrical inner surface of the cylinder 1, has electrical insulation and heat resistance, Moreover, it is a container formed into a cylindrical shape using a zirconia material with poor thermal conductivity, and there are metal rings located at the upper and lower parts of the inside of the container 10 and facing the opposing surfaces of the opposing pistons 4 and 5. 1
3 and 14 are metal rings made of a metal such as nickel that has a high melting point and is a good electrical conductor. It has the function of directly applying direct current electricity, and is located inside the metal rings 13 and 14, respectively, and faces the facing surface of the opposing pistons 4 and 5.
1 and 12 are disks formed into disk shapes using zirconia material, and the metal rings constitute concentric circular bodies to form the container 10.
An upper lid and a lower lid are formed that hold down the upper and lower surfaces of the sintering raw material loaded therein. In the heating and pressurizing press device constituting such a mechanism, alternating current or direct current electricity supplied by the opposed pistons 4 and 5 is supplied to the cylinder 1.
an electrically insulating film 2 covering the inner surfaces of the pistons 4 and 5; and an electrically insulating film 6 covering the cylindrical outer surfaces of the opposing pistons 4 and 5.
and 7, or the cylindrical outer surfaces of the opposing pistons 4 and 5 are not coated with an electrically insulating coating, but the electrically insulating coating 2 coated on the inner surface of the cylinder 1 blocks the flow of electricity. Then, electricity is applied directly to the sintering raw material 15 through the metal rings 13 and 14 facing the opposing surfaces of the opposing pistons 4 and 5, thereby directly heating the sintering raw material. Along with its heating, the lower piston 5 is pressurized by a ram of a hydraulic press whose piston gripping body 9 connecting the piston is set inside the lower part of the press body frame; The pressure is transmitted from the piston holder 9 to the lower piston 5, and the lower piston 5 transmits the transmitted pressure to the raw material for sintering 15 to pressurize the raw material for sintering.
焼結用原料が通気の導電性を有する材料である場合に、
この機構を構成している通電加熱と機械加圧を行う加熱
加圧プレス装置を使用して焼結体を製造する。When the raw material for sintering is a material with ventilation conductivity,
A sintered body is manufactured using a heating and pressing press device that performs electrical heating and mechanical pressure, which constitutes this mechanism.
第３図は、第１図におけるシリンダー１と対向ピストン
４と５とをもって構成したプレス装置において、シリ・
ンダー１０内筒状内側面に被覆した電気絶縁皮膜２の内
側面と対向ピストン４と５との対向面とにより囲まれて
いる加熱加圧室内に配置した電気抵抗発熱体１６に通電
して其の電気抵抗発熱体に発生した熱をもって、其の加
熱加圧室内に装填している焼結用原料１５を加熱すると
ころの通電間接加熱を行う機構を説明する図面である。FIG. 3 shows the cylinder 1 and opposing pistons 4 and 5 shown in FIG.
Electricity is supplied to the electric resistance heating element 16 disposed in the heating and pressurizing chamber surrounded by the inner surface of the electrical insulating film 2 coated on the cylindrical inner surface of the inner cylinder 10 and the opposing surfaces of the opposing pistons 4 and 5. 2 is a diagram illustrating a mechanism for performing indirect electrical heating in which the sintering raw material 15 loaded in the heating and pressurizing chamber is heated using the heat generated in the electric resistance heating element.
対向ピストン４と５との対向面の間にあってシリンダー
１の円筒状内側面に被覆した電気絶縁皮膜２の内側面に
面接ししている円筒状の容器１０は、高い硬度と強い耐
熱性を有すると共に電気絶縁体でもあるジルコニア材を
用いて円筒状に成形した容器であって、其の容器１０の
内側面に面接していて、且つ対向ピストン４と５との対
向面に環状面をもって面接している金属環１３と１４と
の環状面に端面にて面接している電気抵抗発熱体１６は
黒鉛材を用いて円筒状に成形した黒鉛円筒状であシ、其
の電気抵抗発熱体１６の内側面に面接している内側容器
１７はパイロフィライト材を用いて円筒状に成形した内
側容器であシ、其の内側容器１７の内部には焼結用原料
１５を装填するものであって、其の内側容器１７と焼結
用原料１５との上下両端面は、ジルコニア材を用いて円
板状に成形した円板１１と１２とをもって押えていて、
高温度に加熱された焼結用原料１５により対向ピストン
４と５とが高温度に加熱されることを防止するものであ
る。斯様な機構を構成している加熱加圧プレス装置にお
いて対向ピストン４と５とより加熱加圧室内へ電気を供
給するときは、電気は金属環１３と１４とを通って電気
抵抗発熱体１６に通電して、其の電気抵抗発熱体１６が
発熱し、其の発生した熱をもって内側容器１７の内部に
装填している焼結用原料１５を加熱する。其の加熱と共
に、下部ピストン５は、其のピストンを結合しているピ
ストン把持体９が、プレス本体フレームの下部分の内側
に設定しである油圧プレスのラムにより加圧され、其の
加圧された圧力をピストン把持体９より下部ピストン５
へ伝達し、其の伝達された圧力を下部ピストン５が焼結
用原料１５へ伝達して焼結用原料１５を加圧する。焼結
用原料が導電性を有しない材料である場合に、この機構
を構成している通電加熱と機械加圧を行う加熱加圧プレ
ス装置を使用して焼結体を製遭する。The cylindrical container 10, which is located between the opposing surfaces of the opposing pistons 4 and 5 and faces the inner surface of the electrically insulating film 2 coated on the cylindrical inner surface of the cylinder 1, has high hardness and strong heat resistance. It is a container formed into a cylindrical shape using zirconia material, which is also an electrical insulator, and has an annular surface facing the inner surface of the container 10 and facing the opposing pistons 4 and 5. The electrical resistance heating element 16 whose end face is in contact with the annular surfaces of the metal rings 13 and 14 is a graphite cylindrical shape formed into a cylindrical shape using graphite material. The inner container 17 facing the inner surface is an inner container formed into a cylindrical shape using pyrophyllite material, and the sintering raw material 15 is charged inside the inner container 17. , the upper and lower end surfaces of the inner container 17 and the sintering raw material 15 are held down by disks 11 and 12 formed into disk shapes using zirconia material,
This prevents the opposed pistons 4 and 5 from being heated to a high temperature by the sintering raw material 15 heated to a high temperature. When electricity is supplied into the heating and pressurizing chamber by the opposing pistons 4 and 5 in a heating and pressurizing press device constituting such a mechanism, the electricity passes through the metal rings 13 and 14 and reaches the electric resistance heating element 16. The electric resistance heating element 16 generates heat, and the generated heat heats the sintering raw material 15 loaded in the inner container 17. Along with its heating, the lower piston 5 is pressurized by a ram of a hydraulic press whose piston gripping body 9 connecting the piston is set inside the lower part of the press body frame, The pressure is transferred from the piston gripper 9 to the lower piston 5.
The lower piston 5 transmits the transmitted pressure to the sintering raw material 15 to pressurize the sintering raw material 15. When the raw material for sintering is a material that does not have electrical conductivity, a sintered body is produced using a heating press device that performs electrical heating and mechanical pressure, which constitutes this mechanism.
以上の説明で明らかにしたように、従来使用されていた
加熱加圧プレス装置においては、シリンダーとして黒鉛
を用いて成形して成るものを用い、更に加熱用コイルを
その外周に設けた構造になっているので、加熱加圧作業
は５００幻／−が加圧の限度であったが、本発明の加熱
加圧プレス装置においては、シリンダ一部の外周に補強
環を幾重にも嵌合することができる構造にしであるので
５０，０００ｋｒ／ｍの超高圧で作業を行うことができ
る大きな効果がある。As clarified in the above explanation, the conventional heating and pressure press equipment uses a cylinder made of graphite and has a structure in which a heating coil is provided around the outer circumference of the cylinder. Therefore, the limit of heating and pressing work was 500 mm/-, but in the heating and pressing press device of the present invention, reinforcing rings are fitted in multiple layers around the outer periphery of a part of the cylinder. Since it has a structure that allows it to operate at high pressures of 50,000 kr/m, it has the great effect of allowing work to be carried out at ultra-high pressures of 50,000 kr/m.
第１図は、加熱加圧機構説明図
第２図は、直接通電式加熱加圧機構説明図第５図は、間
接通電式加熱加圧機構説明図１、 シリンダ
ー、 ６．７． 皮膜
６、補強環
１１．１２、円板
１３、１４． 金属環
１５、焼結用原料
１６、電気抵抗発熱体
１７、内側容器Fig. 1 is an illustration of a heating and pressing mechanism. Fig. 2 is an illustration of a direct energizing type heating and pressing mechanism. Fig. 5 is an illustration of an indirect energizing type heating and pressing mechanism. 1. Cylinder; 6.7. Coating 6, reinforcing rings 11.12, disks 13, 14. Metal ring 15, raw material for sintering 16, electric resistance heating element 17, inner container
Claims (3)
靭鋼・硬質炭素材其の他の硬質材を用いて内側面を円筒
状に成形したシリンダーの円筒状内側面に電気絶縁皮膜
を被覆したシリンダーに、超硬質炭化タングステン系合
金・硬質合金鋼・其の他の導電性を有する硬質材を用い
て円柱状に成形した２個のピストンまたは其の２個のピ
ストンの円柱状外側面に電気絶縁皮膜を被覆した２個の
ピストンを対向させた対向ピストンを組合わせてプレス
装置を構成し、其のプレス装置におけるシリンダーの円
筒状内側面に被覆した電気絶縁皮膜と対向ピストンの対
向面とにより囲まれた加熱加圧室内に装填した焼結用原
料に、対向ピストンより供給する電気を焼結用原料に直
接に通電して其の焼結用原料を加熱するように構成した
機構を特徴とする通電加熱と機械加圧を行う加熱加圧プ
レス装置。(1) An electrically insulating film is coated on the cylindrical inner surface of a cylinder whose inner surface is formed into a cylindrical shape using ultra-hard tungsten carbide alloy, hard alloy steel, tough steel, hard carbon material, or other hard materials. The cylinder has two pistons formed into a cylindrical shape using ultra-hard tungsten carbide alloy, hard alloy steel, or other electrically conductive hard materials, or an electric conductor is attached to the cylindrical outer surface of the two pistons. A press device is constructed by combining two opposing pistons covered with an insulating film, and the electrical insulating film coated on the cylindrical inner surface of the cylinder in the press device and the opposing surface of the opposing piston It is characterized by a mechanism configured to heat the sintering raw material loaded in the enclosed heated and pressurized chamber by directly applying electricity supplied from the opposed piston to the sintering raw material. A heating press device that performs electrical heating and mechanical pressure.
靭鋼・硬質炭素材其の他の靭性を有する硬質材を用いて
内側面を円筒状に成形したシリンダーの円筒状内側面に
電気絶縁皮膜を被覆したシリンダーに、超硬質炭化タン
グステン合金・硬質合金鋼・其の他の導電性を有する硬
質材を用いて円柱状に成形した２個のピストンまたは其
の２個のピストンの円柱状外側面に電気絶縁皮膜を被覆
した２個のピストンを対向させた対向ピストンを組合わ
せてプレス装置を構成し、其のプレス装置におけるシリ
ンダーの円筒状内側面に被覆した電気絶縁皮膜と対向ピ
ストンの対向面とにより囲まれた加熱加圧室内に電気抵
抗発熱体を配置し、其の電気抵抗発熱体に対向ピストン
より供給する電気を通電して発熱させて、其の発熱した
熱をもつて加熱加圧室内に装填した焼結用原料を加熱す
るように構成した機構を特徴とする通電加熱と機械加圧
を行う加熱加圧プレス装置。(2) Electrical insulation coating on the cylindrical inner surface of a cylinder whose inner surface is formed into a cylindrical shape using ultra-hard tungsten carbide alloy, hard alloy steel, tough steel, hard carbon material, or other tough hard materials. Two pistons formed into a cylindrical shape using ultra-hard tungsten carbide alloy, hard alloy steel, or other electrically conductive hard materials in a cylinder coated with A press device is constructed by combining two opposing pistons each coated with an electrically insulating film, and the electrically insulating film coated on the cylindrical inner surface of the cylinder in the press device and the opposing surface of the opposing piston. An electric resistance heating element is placed in a heating and pressurizing chamber surrounded by the electric resistance heating element, and electricity supplied from the opposed piston is applied to the electric resistance heating element to generate heat, and the generated heat is used to heat and pressurize. A heating and pressing press device that performs electrical heating and mechanical pressure, and is characterized by a mechanism configured to heat sintering raw materials loaded into a chamber.
靭鋼・硬質炭素材其の他の靭性を有する硬質材を用いて
内側面を円筒状に成形したシリンダーの円筒状内側面に
電気絶縁皮膜を被覆したシリンダーに、超硬質炭化タン
グステン系合金・硬質合金鋼・其の他の導電性を有する
硬質材を用いて円柱状に成形した２個のピストンまたは
其の２個のピストンの円柱状内側面に電気絶縁皮膜を被
覆した２個のピストンを対向させた対向ピストンを組合
わせてプレス装置を構成し、其のプレス装置におけるシ
リンダーの円筒状内側面およびピストンの円柱状外側面
に電気絶縁皮膜を被覆する方法として、ＣＶＤ方法によ
りアルミナ皮膜其の他の電気絶縁皮膜を被覆する方法、
ＰＶＤ法によりアルミナ皮膜其の他の電気絶縁皮膜を被
覆する方法、燐酸アルミニウム其の他の電気絶縁性を有
する燐酸塩の皮膜を被覆する方法、燐酸アルミニウム其
の他の電気絶縁性を有する燐酸塩に電気絶縁性を有する
物質の粉末を混合した粉末混合燐酸塩の皮膜を被覆する
方法、珪酸アルカリ其の他の電気絶縁性を有する珪酸塩
の皮膜を被覆する方法、珪酸アルカリ其の他の電気絶縁
性を有する珪酸塩に電気絶縁性を有する物質の粉末を混
合した粉末混合珪酸塩の皮膜を被覆する方法等のうちよ
り選択した電気絶縁皮膜を被覆する方法を使用して、シ
リンダーの円筒状内側面およびピストンの円柱状外側面
に電気絶縁皮膜を被覆することを特徴とする通電加熱と
機械加圧を行う加熱加圧プレス装置の製造法。(3) Electric insulation coating on the cylindrical inner surface of a cylinder whose inner surface is formed into a cylindrical shape using ultra-hard tungsten carbide alloy, hard alloy steel, tough steel, hard carbon material, or other tough hard materials. Two pistons formed into a cylindrical shape using ultra-hard tungsten carbide alloy, hard alloy steel, or other conductive hard materials in a cylinder coated with A press device is constructed by combining two opposing pistons whose sides are coated with an electrically insulating film, and the cylindrical inner surface of the cylinder and the cylindrical outer surface of the piston in the press device are coated with an electrically insulating film. As a method of coating, a method of coating an alumina film or other electrically insulating film by a CVD method,
Method of coating an alumina film or other electrically insulating film by PVD method, method of covering a film of aluminum phosphate or other phosphate having electrically insulating properties, aluminum phosphate or other phosphate having electrically insulating properties A method of coating a film of a powdered mixed phosphate mixed with powder of a substance having electrical insulation properties, a method of coating a film of a silicate having electrical insulation properties with an alkali silicate and other electrical insulating properties, a method of coating a film of a silicate with an electrical insulation property, an alkali silicate and other electrical The cylindrical shape of the cylinder is coated with an electrically insulating film selected from methods such as coating a powdered mixed silicate film, which is a mixture of an insulating silicate and a powder of an electrically insulating substance. A method for manufacturing a heating and pressing press device that performs electrical heating and mechanical pressure, characterized by coating the inner surface and the cylindrical outer surface of a piston with an electrically insulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14663685A JPS6210201A (en) | 1985-07-05 | 1985-07-05 | Heat pressing device for executing electrical heating and mechanical pressing and manufacture thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14663685A JPS6210201A (en) | 1985-07-05 | 1985-07-05 | Heat pressing device for executing electrical heating and mechanical pressing and manufacture thereby |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6210201A true JPS6210201A (en) | 1987-01-19 |
Family
ID=15412207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14663685A Pending JPS6210201A (en) | 1985-07-05 | 1985-07-05 | Heat pressing device for executing electrical heating and mechanical pressing and manufacture thereby |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6210201A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0841153A3 (en) * | 1996-11-11 | 1998-05-27 | Notter GmbH Werkzeugbau | Tabletting tool with an adhesion inhibiting coating |
| WO1998031492A1 (en) * | 1997-01-20 | 1998-07-23 | Mitsubishi Heavy Industries, Ltd. | Sintering method and sintering apparatus |
| US6287352B1 (en) | 1997-07-08 | 2001-09-11 | Smith International, Inc. | Method for manufacturing inserts with holes for clamping |
-
1985
- 1985-07-05 JP JP14663685A patent/JPS6210201A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0841153A3 (en) * | 1996-11-11 | 1998-05-27 | Notter GmbH Werkzeugbau | Tabletting tool with an adhesion inhibiting coating |
| WO1998031492A1 (en) * | 1997-01-20 | 1998-07-23 | Mitsubishi Heavy Industries, Ltd. | Sintering method and sintering apparatus |
| US6287352B1 (en) | 1997-07-08 | 2001-09-11 | Smith International, Inc. | Method for manufacturing inserts with holes for clamping |
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