JPH05200596A - Temporary compact pressing device - Google Patents
Temporary compact pressing deviceInfo
- Publication number
- JPH05200596A JPH05200596A JP4013098A JP1309892A JPH05200596A JP H05200596 A JPH05200596 A JP H05200596A JP 4013098 A JP4013098 A JP 4013098A JP 1309892 A JP1309892 A JP 1309892A JP H05200596 A JPH05200596 A JP H05200596A
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- temporary
- pressing device
- molded body
- die
- 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
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- Press-Shaping Or Shaping Using Conveyers (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、加熱、加圧プレス成形
に先だって、高純度の仮成形体を製造するための仮成形
体プレス装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary molded body press device for producing a high-purity temporary molded body prior to heating and press molding.
【０００２】[0002]
【従来の技術】加熱、加圧プレス成形は、金属粉体又は
セラミック粉体の成形体加工方法として一般に知られて
いる。この加工法では、粉体からそのまま成形体を製造
する方法もあるが、最近は、４００ｋｇ／ｃｍ2 以上の
強度の高い成形体加工が要求されるようになり、成形体
を製造する前加工として粉体から仮成形体を作製してお
き、この仮成形体を加熱、加圧プレス成形することが行
われている。2. Description of the Related Art Heat and pressure press molding are generally known as a method for processing a molded body of metal powder or ceramic powder. In this processing method, there is also a method of directly manufacturing a molded product from powder, but recently, it has become necessary to process a molded product having a high strength of 400 kg / cm 2 or more. BACKGROUND ART It is performed that a temporary molded body is prepared from powder and the temporary molded body is heated and press-molded.
【０００３】従来、この仮成形には、図２に示すよう
に、金属製のダイス１０、上パンチ１１及び下パンチ１
２から成るプレス装置が使用されていた。この仮成形体
の加工は常温でなされるため、加熱状態で行われ場合に
比べると低いが、加圧時にプレス装置の金属微粒子が不
純物として混入し、高純度の成形体が製造できないとい
う問題があった。Conventionally, as shown in FIG. 2, a metal die 10, an upper punch 11 and a lower punch 1 are used for this temporary forming.
A pressing machine consisting of two was used. Since the processing of this temporary molded body is performed at room temperature, it is lower than that in the case where it is carried out in a heated state, but there is a problem that high-purity molded body cannot be manufactured because metal fine particles of the pressing device are mixed as impurities at the time of pressurization. there were.
【０００４】そこで、仮成形加工時に仮成形体に不純物
が混入しないようにするため、黒鉛製のプレス装置を使
用することが考えられるが、黒鉛は金属に比べて強度が
弱いため、加圧条件を大きくするにはプレス装置全体が
大型化し、運搬等がたいへんとなり、又、衝撃を受けて
破損する機会も多くなるといった取扱上の問題があっ
た。Therefore, it is conceivable to use a pressing device made of graphite in order to prevent impurities from being mixed into the temporarily formed body during the temporary forming process. However, since graphite is weaker in strength than metal, pressure conditions are used. In order to increase the size, there is a problem in handling that the entire press device becomes large in size, transportation is difficult, and there are many opportunities for damage due to impact.
【０００５】[0005]
【発明が解決使用とする課題】本発明は、このような事
情に鑑みなされたものであり、その目的とするところ
は、全体をコンパクトに設計できるとともに高純度、高
強度の仮成形体を得ることができる仮成形体プレス装置
を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a temporary molded article of high purity and high strength which can be designed compactly as a whole. It is to provide a temporary molded body press device capable of performing the above.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記課題を解
決するため手段として、「金属粉体又はセラミック粉体
を高純度で仮成形するための仮成形体プレス装置であっ
て、該装置に用いられるダイスの内側が高純度黒鉛材で
構成され、外側が前記黒鉛材より強度の高い部材で構成
されて成るダイスを有することを特徴とする仮成形体プ
レス装置」を、その内容としている。As a means for solving the above-mentioned problems, the present invention provides a "temporary molded body pressing apparatus for temporarily molding metal powder or ceramic powder with high purity. The die used for the inside is made of high-purity graphite material, the outside has a die made of a member having a higher strength than the graphite material `` temporary molded body press device '', ..
【０００７】このプレス装置は基本的には、図１に示す
ように、黒鉛製のスリーブ１、黒鉛製の上スペーサー
２、黒鉛製の下スペーサー３、ダイス４、上パンチ５及
び下パンチ６によって構成される。このプレス装置は黒
鉛製のスリーブ１内に粉体を入れ、上下の黒鉛製スペー
サー２、３を取り付けた上パンチ５、下パンチ６により
垂直方向に加圧して仮成形体を成形するようになってい
る。As shown in FIG. 1, this press machine basically comprises a sleeve 1 made of graphite, an upper spacer 2 made of graphite, a lower spacer 3 made of graphite, a die 4, an upper punch 5 and a lower punch 6. Composed. In this press, powder is put in a graphite sleeve 1 and vertically pressed by an upper punch 5 and a lower punch 6 to which upper and lower graphite spacers 2 and 3 are attached to form a temporary molded body. ing.
【０００８】かかるプレス装置の黒鉛材は、石油ピッ
チ、石炭ピッチ、タール、コークス等が出発原料として
使用され、これにフェノール樹脂、フラン樹脂等の炭化
性樹脂を含浸し、硬化、炭化させたものが使用される。
そして、かかる黒鉛材はＦｅ、Ｃｏ、Ｎｉ、Ｎａ、Ｃ
ａ、Ａｌ、Ｂ、Ｐ、Ｖ等の不純物の総含有量が３００ｐ
ｐｍ以下であることが望ましく、これら黒鉛材で構成さ
れたダイスの内側に熱分解炭素をＣＶＤ処理等で被覆す
ればより効果的である。また、加圧の均一化を図る点か
ら、異方比が１．２以下の等方性黒鉛材を使用するのが
望ましい。[0008] The graphite material of such a pressing device is made by using petroleum pitch, coal pitch, tar, coke, etc. as a starting material, which is impregnated with a carbonizing resin such as phenol resin or furan resin, and then hardened and carbonized. Is used.
The graphite material is Fe, Co, Ni, Na, C.
The total content of impurities such as a, Al, B, P and V is 300 p
It is preferably pm or less, and it is more effective if the inside of the die made of these graphite materials is coated with pyrolytic carbon by a CVD process or the like. Further, from the viewpoint of making the pressurization uniform, it is desirable to use an isotropic graphite material having an anisotropic ratio of 1.2 or less.
【０００９】また、プレス装置に使用されるダイス４
は、黒鉛材より強度の高い部材（高強度部材）で構成さ
れ、クロム、モリブデン鋼、ステンレス等の金属や、二
次元、三次元構造のＣ／Ｃ炭素繊維強化複合黒鉛材を使
用することができ、黒鉛材に比べ引張強度が３倍以上で
あることが望ましい。The die 4 used in the press machine is also used.
Is composed of a member (high-strength member) having higher strength than the graphite material, and it is possible to use a metal such as chromium, molybdenum steel, or stainless steel, or a C / C carbon fiber reinforced composite graphite material having a two-dimensional or three-dimensional structure. It is desirable that the tensile strength is 3 times or more that of the graphite material.
【００１０】内側に位置する黒鉛材と外側に位置する高
強度部材とは、加圧したときに余分なひずみや応力がか
からない形態が望ましく、例えば、平板状の仮成形体を
成形する場合には、黒鉛製のスペーサーは高強度部材で
作製された上下パンチの成形面に対応し肉厚が一定であ
る方がよい。また、複雑な形状の仮成形体を成形する場
合には黒鉛製のスペーサーと高強度部材との間に加圧時
のひずみや応力を吸収するためのスペーサーを介在させ
てもよい。The graphite material located inside and the high-strength member located outside preferably have a form in which excessive strain or stress is not applied when pressure is applied. For example, in the case of forming a plate-shaped temporary molded body. The spacer made of graphite preferably has a constant wall thickness corresponding to the molding surfaces of the upper and lower punches made of a high-strength member. Further, in the case of molding a temporary molded body having a complicated shape, a spacer for absorbing strain and stress at the time of pressurization may be interposed between the graphite spacer and the high-strength member.
【００１１】また、スペーサー２、３は上下パンチ５、
６と一体となっている方が成形体取り出し時にスペーサ
ー２、３がスリーブ１内に残らないため好ましい。The spacers 2 and 3 are upper and lower punches 5,
It is preferable that the spacers 6 and 6 are integrated because the spacers 2 and 3 do not remain in the sleeve 1 when the molded product is taken out.
【００１２】[0012]
【作用】上記プレス装置にあっては、内側の高純度黒鉛
材によって高純度の仮成形体を得ることができると共
に、外側の高強度部材によって高強度の仮成形体の成形
も容易となる。すなわち、加圧条件を大きくできなかっ
た黒鉛材の問題を外側の高強度部材によって解消し、装
置全体をコンパクトにし、破損等の問題もなくなり取り
扱いが便利となって、高純度、高強度の仮成形体を容易
に得ることができる。In the above pressing apparatus, a high-purity temporary molded body can be obtained by the high-purity graphite material on the inner side, and a high-strength temporary molded body can be easily molded by the outer high-strength member. In other words, the problem of graphite material that could not be applied under high pressure was solved by the outer high-strength member, and the entire device was made compact, and problems such as breakage were eliminated and handling became convenient, and high-purity, high-strength temporary A molded body can be easily obtained.
【００１３】[0013]
【実施例】次に、本発明の実施例について説明する。実施例１ 図１に示すように、内径が１００ｍｍφ、引張強度が３
００ｋｇ／ｃｍ2 の黒鉛製のスリーブ１と、外径が３０
０ｍｍφ、内径が２００ｍｍφ、引張強度が１０００ｋ
ｇ／ｃｍ2 のクロムモリブデン製のダイス４と、肉厚が
３０ｍｍの黒鉛製のスペーサー２、３及び上パンチ５、
下パンチ６から成るプレス装置を作製し、ＳｉＣ粉体を
常温、加圧３０ｔｏｎで試験したが、装置の異常は認め
られなかった。EXAMPLES Next, examples of the present invention will be described. Example 1 As shown in FIG. 1, the inner diameter was 100 mmφ and the tensile strength was 3
00kg / cm 2 graphite sleeve 1 and outer diameter 30
0mmφ, inner diameter 200mmφ, tensile strength 1000k
g / cm 2 chrome molybdenum die 4, graphite spacers 2 and 3 with a thickness of 30 mm, and upper punch 5,
A press device composed of the lower punch 6 was produced, and the SiC powder was tested at room temperature and a pressure of 30 tons, but no device abnormality was observed.
【００１４】実施例２ 実施例１と同サイズで、外側に引張強度が１５００ｋｇ
／ｃｍ2 のＣ／Ｃ複合材からなるダイスを使用して、実
施例１と同様に、Ａｌ2Ｏ3粉体を常温、加圧３０ｔｏｎ
で試験したが、装置の異常は認められなかった。 Example 2 Same size as Example 1, but with a tensile strength of 1500 kg on the outside.
Using a die made of C / C composite material of C / C 2 / cm 2 , the Al 2 O 3 powder was pressed at room temperature and pressure of 30 ton in the same manner as in Example 1.
However, no abnormalities were found in the device.
【００１５】比較例１ 内径が１００ｍｍφ、外径が３００ｍｍφ、引張強度が
３００ｋｇ／ｃｍ2 の黒鉛製のダイス及び上パンチ、下
パンチから成るプレス装置を作製し、ＳｉＣ粉体を常
温、加圧３０ｔｏｎで試験したところ、３回目にダイス
にクラックが発生し、仮成形体は破損した。COMPARATIVE EXAMPLE 1 A press machine consisting of a graphite die having an inner diameter of 100 mmφ, an outer diameter of 300 mmφ and a tensile strength of 300 kg / cm 2 and an upper punch and a lower punch was prepared. As a result of the test, the die was cracked at the third time and the temporary molded body was broken.
【００１６】[0016]
【発明の効果】以上説明したように、本発明にあって
は、上記のような構成により、高純度、高強度の仮成形
体をコンパクトな装置によって得ることが可能となり、
強度の高い成形体加工技術の向上を図ることができると
いう優れた効果を有している。As described above, according to the present invention, with the above-mentioned structure, it is possible to obtain a high-purity, high-strength temporary molded product with a compact device.
It has an excellent effect that it is possible to improve the technology for processing a molded body having high strength.
【図１】本発明に係るプレス装置の一実施例を示す断面
図である。FIG. 1 is a sectional view showing an embodiment of a pressing device according to the present invention.
【図２】従来の仮成形体製造用のプレス装置を示す断面
図である。FIG. 2 is a cross-sectional view showing a conventional pressing device for manufacturing a temporary molded body.
１ 黒鉛製のスリーブ ２ 黒鉛製の上スペーサー ３ 黒鉛製の下スペーサー ４ ダイス ５ 上パンチ ６ 下パンチ 1 Graphite sleeve 2 Graphite upper spacer 3 Graphite lower spacer 4 Die 5 Upper punch 6 Lower punch
Claims (1)
仮成形するための仮成形体プレス装置であって、該装置
に用いられるダイスの内側が高純度黒鉛材で構成され、
外側が前記黒鉛材より強度の高い部材で構成されて成る
ダイスを有することを特徴とする仮成形体プレス装置。1. A temporary molded body pressing apparatus for temporarily molding metal powder or ceramic powder with high purity, wherein a die used in the apparatus is made of high purity graphite material.
An apparatus for pressing a preformed body, characterized in that the outside has a die composed of a member having higher strength than the graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013098A JPH05200596A (en) | 1992-01-28 | 1992-01-28 | Temporary compact pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013098A JPH05200596A (en) | 1992-01-28 | 1992-01-28 | Temporary compact pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05200596A true JPH05200596A (en) | 1993-08-10 |
Family
ID=11823680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4013098A Pending JPH05200596A (en) | 1992-01-28 | 1992-01-28 | Temporary compact pressing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05200596A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114699881A (en) * | 2022-03-10 | 2022-07-05 | 北京航化节能环保技术有限公司 | Self-cooling graphite quenching absorber and absorbing device |
-
1992
- 1992-01-28 JP JP4013098A patent/JPH05200596A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114699881A (en) * | 2022-03-10 | 2022-07-05 | 北京航化节能环保技术有限公司 | Self-cooling graphite quenching absorber and absorbing device |
| CN114699881B (en) * | 2022-03-10 | 2024-05-31 | 北京航化节能环保技术有限公司 | Self-cooling graphite quenching absorber and absorption device |
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