JPH0428771B2 - - Google Patents
Info
- Publication number
- JPH0428771B2 JPH0428771B2 JP18954287A JP18954287A JPH0428771B2 JP H0428771 B2 JPH0428771 B2 JP H0428771B2 JP 18954287 A JP18954287 A JP 18954287A JP 18954287 A JP18954287 A JP 18954287A JP H0428771 B2 JPH0428771 B2 JP H0428771B2
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- mold
- fiber molded
- fiber
- rubber
- 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.)
- Expired
Links
- 239000000835 fiber Substances 0.000 claims description 60
- 239000000463 material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000011324 bead Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
- B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure
Description
【発明の詳細な説明】
Ａ 発明の目的
(1) 産業上の利用分野
本発明は、金属製部材等を繊維強化する場合に
用いられる強化用筒状繊維形成体の成形方法、特
に、通気性筒状成形型の外周面に、強化用繊維お
よび無機バインダを付着させて成形体素材を得、
次いで前記成形型をラバー筒内に設置した後、前
記成形体素材を該ラバー筒を介し前記成形型に押
圧して繊維成形体を成形すると共に該繊維成形体
の繊維体積率を決定し、その後前記ラバー筒を前
記繊維成形体より離間させる成形方法の改良に関
する。Detailed Description of the Invention A. Purpose of the Invention (1) Industrial Application Field The present invention relates to a method for forming a reinforcing cylindrical fiber formed body used when reinforcing metal members, etc. A molded body material is obtained by attaching reinforcing fibers and an inorganic binder to the outer peripheral surface of a cylindrical mold.
Next, after installing the mold in a rubber cylinder, the molded body material is pressed against the mold through the rubber cylinder to form a fiber molded body and determine the fiber volume percentage of the fiber molded body, and then The present invention relates to an improvement in a molding method for separating the rubber cylinder from the fiber molded body.
(2) 従来の技術
従来、この種成形方法においては、成形体素材
の押圧作業をラバー筒の外周面側に加圧気体を供
給することにより行ない、またラバー筒の離間操
作を前記加圧気体を排出することにより行つてい
る。(2) Prior Art Conventionally, in this type of molding method, the pressing operation of the molded body material was performed by supplying pressurized gas to the outer circumference side of the rubber tube, and the separating operation of the rubber tube was performed by supplying pressurized gas to the outer peripheral surface of the rubber tube. This is done by discharging.
(3) 発明が解決しようとする問題点
しかしながら前記手法によると、ラバー筒の離
間操作に伴い繊維成形体がラバー筒に付着するの
で、繊維成形体外周面に強化用繊維および無機バ
インダの一部がラバー筒に持去られて繊維成形体
に凹みを生じたり、また繊維成形体が薄肉の場合
にはその一部が成形型より剥離してラバー筒に持
去られ、繊維成形体に欠けを生じるといつた問題
がある。(3) Problems to be Solved by the Invention However, according to the above method, the fiber molded body adheres to the rubber cylinder as the rubber cylinder is separated, so that some of the reinforcing fibers and inorganic binder are attached to the outer peripheral surface of the fiber molded body. may be carried away by the rubber tube and cause dents in the fiber molded article, or if the fiber molded article is thin, a part of it may peel off from the mold and be taken away by the rubber tube, causing chips in the fiber molded article. There are some problems that occur.
本発明は前記問題を解決することのできる前記
成形方法を提供することを目的とする。 An object of the present invention is to provide the above-mentioned molding method that can solve the above-mentioned problems.
Ｂ 発明の構成
(1) 問題点を解決するための手段
本発明は、通気性筒状成形型の外周面に、強化
用繊維および無機バインダを付着させて成形体素
材を得、次いで前記成形型をラバー筒内に設置し
た後、前記成形体素材を該ラバー筒を介し前記成
形型に押圧して繊維成形体を成形すると共に該繊
維成形体の繊維体積率を決定し、その後前記ラバ
ー筒を前記繊維成形体より離間させる強化用筒状
繊維成形体の成形方法において、前記ラバー筒の
離間操作を、前記成形型内に吸引作用を施しなが
ら行うことを特徴とする。B. Structure of the Invention (1) Means for Solving Problems The present invention provides a molded body material by attaching reinforcing fibers and an inorganic binder to the outer peripheral surface of an air-permeable cylindrical mold, and then is placed in the rubber cylinder, the molded body material is pressed against the mold through the rubber cylinder to form a fiber molded body, and the fiber volume percentage of the fiber molded body is determined, and then the rubber cylinder is In the method for molding a reinforcing cylindrical fiber molded body which is separated from the fiber molded body, the operation of separating the rubber cylinder is performed while applying a suction action within the mold.
(2) 作用
前記手法によれば、繊維成形体からのラバー筒
の離間操作時には繊維成形体が成形型に吸引され
ているので、その繊維成形体がラバー筒に付着す
ることがなく、これにより健全な繊維成形体を得
ることができる。(2) Effect According to the above method, since the fiber molded body is sucked into the mold when the rubber cylinder is separated from the fiber molded body, the fiber molded body does not adhere to the rubber cylinder. A healthy fiber molded body can be obtained.
(3) 実施例
第１図は強化用筒状繊維成形体１を示し、その
繊維成形体１は、強化用繊維としての長さ25〜
1000μｍのセラミツク繊維、例えばアルミナ繊維
とカーボン繊維との混合繊維を、無機バインダと
しての５％アルミナゾルにより部分的に結合した
もので、マトリツクスが浸入し得る無数の空〓を
有する。(3) Example Figure 1 shows a reinforcing cylindrical fiber molded body 1, and the fiber molded body 1 has a length of 25 to 25 mm as reinforcing fibers.
It is made by partially bonding 1000 μm ceramic fibers, such as mixed fibers of alumina fibers and carbon fibers, with 5% alumina sol as an inorganic binder, and has numerous holes into which the matrix can penetrate.
この繊維成形体１は、例えばアルミニウム合金
製シリンダブロツクの鋳造時においてアルミニウ
ム合金マトリツクスと複合して繊維強化複合シリ
ンダスリーブを得るために用いられる。 This fiber molded body 1 is used, for example, in order to obtain a fiber-reinforced composite cylinder sleeve by combining it with an aluminum alloy matrix when casting an aluminum alloy cylinder block.
次に第２図により前記繊維成形体１の製造方法
について説明する。 Next, a method for manufacturing the fiber molded body 1 will be explained with reference to FIG.
第２図ａに示すように、シエル砂（粒度
AFS5）を用いて通気性を有する筒状成形型２を
形成する。この成形型２はシエル砂より構成され
ているので、350〜400℃に高温加熱されると崩壊
するという物性を有する。 As shown in Figure 2a, shell sand (grain size
A cylindrical mold 2 having air permeability is formed using AFS5). Since the mold 2 is made of shell sand, it has the property of collapsing when heated to a high temperature of 350 to 400°C.
第２図ｂに示すように、成形型２の両端開口部
にそれぞれホルダ３1，３2を接着、ボルト締め等
により取付けてそれら開口部を密封する。 As shown in FIG. 2b, holders 3 1 and 3 2 are attached to the openings at both ends of the mold 2 by bonding, bolting, etc., and the openings are sealed.
第２図ｃに示すように、前記混合繊維およびア
ルミナゾルを含む成形材料の水溶液４中に成形型
２を浸漬し、真空ポンプ５によりホルダ３1の吸
気孔３ａを通じて成形型２内に20〜60cmHgの吸
引作用を施し、成形材料を成形型２外周面に所定
の厚さに付着させて成形体素材６を得る。 As shown in FIG. 2c, the mold 2 is immersed in an aqueous solution 4 of the molding material containing the mixed fibers and alumina sol, and a vacuum pump 5 is used to pump the mold 2 into the mold 2 through the air intake hole 3a of the holder 31 at a pressure of 20 to 60 cmH. A suction action is applied to make the molding material adhere to the outer peripheral surface of the mold 2 to a predetermined thickness, thereby obtaining a molded body material 6.
第２図ｄに示すように、成形型２を、後述する
ラバープレス７に設置して成形体素材６を成形型
２に押圧し、これにより繊維成形体１の成形を終
了すると共にその繊維体積率を決定する。 As shown in FIG. 2d, the mold 2 is installed in a rubber press 7, which will be described later, and the molded body material 6 is pressed against the mold 2, thereby completing the molding of the fiber molded body 1 and increasing its fiber volume. Determine the rate.
第２図ｅに示すように、成形型２より両ホルダ
３1，３2を取外す。 As shown in FIG. 2e, both holders 3 1 and 3 2 are removed from the mold 2.
第２図ｆに示すように、成形型２を乾燥炉８内
に設置し、繊維成形体１に120℃にて１時間の乾
燥処理を施して水分を蒸発除去する。 As shown in FIG. 2f, the mold 2 is placed in a drying oven 8, and the fiber molded body 1 is subjected to a drying process at 120° C. for 1 hour to evaporate and remove moisture.
第２図ｇに示すように、成形型２を焼結炉９内
に設置し、成形型２に350〜400℃にて１時間の崩
壊処理を施す。この崩壊処理により成形型２は完
全に崩壊する。 As shown in FIG. 2g, the mold 2 is placed in a sintering furnace 9, and the mold 2 is subjected to a disintegration treatment at 350 to 400° C. for 1 hour. This collapse process completely collapses the mold 2.
第２図ｈに示すように、今度は繊維成形体１の
みを焼成炉９内に設置し、繊維成形体１に800℃
にて１時間の焼成処理を施して混合繊維相互をア
ルミナゾルにより部分的に結合する
第３図はラバープレス７および繊維成形体１の
成形工程を示す。 As shown in FIG.
The mixed fibers were subjected to a firing treatment for 1 hour to partially bond each other with alumina sol. FIG. 3 shows the rubber press 7 and the molding process of the fiber molded body 1.
ラバープレス７は、断面凹弧状をなす内周面を
持つ筒体１０と、その筒体１０の下部開口を閉鎖
すべく、筒体１０に取付けられた底板１１と、筒
体１０の上部開口に着脱自在な蓋板１２と、下端
ビード部１３ａを筒体１０および底板１１間に挟
着され、また上端ビード部１３ｂを筒体１０およ
び環状押え板１４間に挟着されたラバー筒１３と
を有する。筒体１０に形成された２個の連通孔１
５1，１５2は加圧ポンプ１６および第１真空ポン
プ１７1にそれぞれ接続され、また底板１１に形
成されてラバー筒１３内に連通する吸気孔１１ａ
は第２真空ポンプ１７ａに接続される。 The rubber press 7 includes a cylindrical body 10 having an inner peripheral surface having a concave arc shape in cross section, a bottom plate 11 attached to the cylindrical body 10 to close the bottom opening of the cylindrical body 10, and an upper opening of the cylindrical body 10. A removable lid plate 12, a rubber cylinder 13 having a lower end bead portion 13a sandwiched between the cylindrical body 10 and the bottom plate 11, and an upper end bead portion 13b sandwiched between the cylindrical body 10 and an annular retaining plate 14. have Two communication holes 1 formed in the cylindrical body 10
5 1 and 15 2 are connected to the pressure pump 16 and the first vacuum pump 17 1 , respectively, and are also formed in the bottom plate 11 and communicate with the inside of the rubber cylinder 13, an intake hole 11a.
is connected to the second vacuum pump 17a.
前記ラバー筒１３は、自由状態にて前記成形型
２よりも小径に成形されており、したがつてラバ
ー筒１３の上、下端ビード部１３ｂ，１３ａは拡
径状態にて筒体１０に取付けられている。その結
果、ラバー筒１０内を蓋板１２の通気孔１２ａを
通じて大気に連通し、またラバー筒１３外周面と
筒体１０内周面との間の気圧室Ｃを大気に連通し
た状態では、ラバー筒１３の中間部は第３図ａに
示すようにくびれている。 The rubber cylinder 13 is molded to have a smaller diameter than the mold 2 in its free state, and therefore the upper and lower bead portions 13b and 13a of the rubber cylinder 13 are attached to the cylinder body 10 in an enlarged diameter state. ing. As a result, when the inside of the rubber cylinder 10 is communicated with the atmosphere through the vent hole 12a of the cover plate 12, and the pressure chamber C between the outer peripheral surface of the rubber cylinder 13 and the inner peripheral surface of the cylinder body 10 is communicated with the atmosphere, the rubber The middle portion of the tube 13 is constricted as shown in FIG. 3a.
繊維成形体１の成形作業に当つては、第３図ｂ
に示すように第１真空ポンプ１７1を作動して気
圧室Ｃに70〜75cmHgの吸引作用を与えてその気
圧室Ｃを減圧し、これによりラバー筒１３を半径
方向外方に吸引して筒体１０内周面に付着させ成
形型２よりも大径に拡張する。そして蓋板１２を
外し、厚さ４〜６mm、繊維体積率５〜10％の成形
体素材６を持つ成形型２を、ホルダ３1を下にし
て底板１１上に立てゝラバー筒１３内に設置し、
再び蓋板１２を閉じてそれと底板１１間にホルダ
３1，３2を介し成形型２を挟着する。その際、ホ
ルダ３1の吸気孔３ａを底板１１の吸気孔１１ａ
に合致させる。 For the molding work of the fiber molded body 1, see Fig. 3b.
As shown in the figure, the first vacuum pump 171 is operated to apply a suction action of 70 to 75 cmHg to the pressure chamber C to reduce the pressure in the pressure chamber C, thereby sucking the rubber cylinder 13 outward in the radial direction and closing the cylinder. It is attached to the inner peripheral surface of the body 10 and expanded to a larger diameter than the mold 2. Then, remove the cover plate 12, and place the mold 2 with the molded material 6 having a thickness of 4 to 6 mm and a fiber volume percentage of 5 to 10% on the bottom plate 11 with the holder 31 facing down, and place it inside the rubber cylinder 13. installed,
The lid plate 12 is closed again and the mold 2 is sandwiched between it and the bottom plate 11 via the holders 3 1 and 3 2 . At that time, the air intake hole 3a of the holder 31 is replaced with the air intake hole 11a of the bottom plate 11.
match.
第３図ｃに示すように、第１真空ポンプ１７1
を不作動にした後気圧室Ｃを大気に開放する。次
いで加圧ポンプ１６を作動し、気圧室Ｃに加圧気
体を導入してラバー筒１３に18Kg／cmの加圧力を
付与すると共に第２真空ポンプ１７2を作動して
成形型２内に35〜60cm2Hgの吸引作用を施す。 As shown in FIG. 3c, the first vacuum pump 17 1
After deactivating the air pressure chamber C, the air pressure chamber C is opened to the atmosphere. Next, the pressure pump 16 is operated to introduce pressurized gas into the pressure chamber C to apply a pressurizing force of 18 kg/cm to the rubber tube 13, and the second vacuum pump 172 is operated to inject 35 kg into the mold 2. Apply a suction effect of ~60cm 2 Hg.
これによりラバー筒１３を縮径させながらその
ラバー筒１３を介して半径方向内方への加圧力が
成形体素材６に作用するので、その成形体素材６
が成形型２に押圧されて繊維成形体１が得られ、
同時に繊維体積率（Vf）が決定される。このよ
うにして得られた繊維成形体１の肉厚は0.5〜2.0
mmで、また繊維体積率は25％である。 As a result, while reducing the diameter of the rubber cylinder 13, a radially inward pressing force is applied to the molded body material 6 through the rubber cylinder 13, so that the molded body material 6
is pressed into a mold 2 to obtain a fiber molded body 1,
At the same time, the fiber volume fraction (Vf) is determined. The wall thickness of the fiber molded body 1 obtained in this way is 0.5 to 2.0
mm, and the fiber volume fraction is 25%.
前記のように拡径状態のラバー筒１３を縮径さ
せながらそのラバー筒１３を介して成形体素材６
を形成型２に押圧すると、ラバー筒１３に皺を発
生することがなく、したがつて平滑な外周面を有
する繊維成形体１を得ることができる。 As described above, while reducing the diameter of the rubber tube 13 in the expanded diameter state, the molded body material 6 is inserted through the rubber tube 13.
When pressed against the forming mold 2, wrinkles do not occur in the rubber tube 13, and therefore a fiber molded article 1 having a smooth outer circumferential surface can be obtained.
第３図ｄに示すように、加圧ポンプ１６の作動
を停止し、一方、第２真空ポンプ１７2は作動を
続行する。したがつて繊維成形体１は成形型２に
吸引されている。 As shown in FIG. 3d, the pressure pump 16 stops operating, while the second vacuum pump 172 continues operating. Therefore, the fiber molded body 1 is sucked into the mold 2.
この状態において、第３図ｅに示すように、第
１真空ポンプ１７1を作動して気圧室Ｃ内を成形
型２内よりも強く減圧（70〜75cmHg）し、これ
により第３図ｂと同様にラバー筒１３を半径方向
外方に吸引して筒体１０内周面に付着させる。 In this state, as shown in Fig. 3e, the first vacuum pump 171 is operated to reduce the pressure in the pressure chamber C more strongly than in the mold 2 (70 to 75 cmHg), and as a result, as shown in Fig. 3b. Similarly, the rubber cylinder 13 is sucked radially outward and attached to the inner peripheral surface of the cylinder body 10.
このラバー筒１３の、繊維成形体１からの離間
操作時には、繊維成形体１が成形型２に吸引され
てそれに付着しているので、繊維成形体１外周部
の前記混合繊維およびアルミナゾルの一部がラバ
ー筒１３に付着して持去られることがなく、また
繊維成形体１が薄肉の場合でも、その一部が成形
型２より剥離してラバー筒１３に持去られること
がない。これにより健全な繊維成形体１を得るこ
とができる。 When the rubber cylinder 13 is separated from the fiber molded body 1, the fiber molded body 1 is attracted to the mold 2 and adheres thereto, so that some of the mixed fibers and alumina sol on the outer periphery of the fiber molded body 1 are removed. will not adhere to the rubber cylinder 13 and be taken away, and even if the fiber molded body 1 is thin, a part of it will not peel off from the mold 2 and be taken away by the rubber cylinder 13. Thereby, a healthy fiber molded body 1 can be obtained.
Ｃ 発明の効果
本発明によれば、成形型内に吸引作用を与えな
がら、繊維成形体からのラバー筒の離間操作を行
うといつた極めて簡単な手段を採用することによ
り、繊維成形体がラバー筒に付着することを防止
して健全な繊維成形体を得ることができる。C. Effects of the Invention According to the present invention, by employing extremely simple means such as separating the rubber cylinder from the fiber molded body while applying a suction action inside the mold, the fiber molded body becomes rubber. It is possible to prevent the fiber from adhering to the cylinder and obtain a healthy fiber molded product.
第１図は繊維成形体の斜視図、第２図は繊維成
形体の製造工程説明図、第３図は繊維成形体の成
形工程説明図である。
１……繊維成形体、２……成形型、６……成形
体素材、１３……ラバー筒、１６……加圧ポン
プ、１７1，１７2……第１、第２真空ポンプ。
FIG. 1 is a perspective view of a fiber molded product, FIG. 2 is an explanatory diagram of the manufacturing process of the fiber molded product, and FIG. 3 is an explanatory diagram of the molding process of the fiber molded product. DESCRIPTION OF SYMBOLS 1...Fiber molded body, 2...Molding die, 6...Molded body material, 13...Rubber tube, 16...Pressure pump, 171 , 172 ...First and second vacuum pumps.
Claims (1)
よび無機バインダを付着させて成形体素材を得、
次いで前記成形型をラバー筒内に設置した後、前
記成形体素材を該ラバー筒を介し前記成形型に押
圧して繊維成形体を成形すると共に該繊維成形体
の繊維体積率を決定し、その後前記ラバー筒を前
記繊維成形体より離間させる強化用筒状繊維成形
体の成形方法において、前記ラバー筒の離間操作
を、前記成形型内に吸引作用を施しながら行うこ
とを特徴とする強化用筒状繊維成形体の成形方
法。1. Obtain a molded body material by attaching reinforcing fibers and an inorganic binder to the outer peripheral surface of a breathable cylindrical mold,
Next, after installing the mold in a rubber cylinder, the molded body material is pressed against the mold through the rubber cylinder to form a fiber molded body and determine the fiber volume percentage of the fiber molded body, and then A method for molding a reinforcing cylindrical fiber molded body in which the rubber tube is separated from the fiber molded body, wherein the operation of separating the rubber tube is performed while applying a suction action within the mold. A method for forming a shaped fiber molded article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18954287A JPS6431917A (en) | 1987-07-29 | 1987-07-29 | Method for forming cylindrical fibrous preformed body for reinforcing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18954287A JPS6431917A (en) | 1987-07-29 | 1987-07-29 | Method for forming cylindrical fibrous preformed body for reinforcing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6431917A JPS6431917A (en) | 1989-02-02 |
| JPH0428771B2 true JPH0428771B2 (en) | 1992-05-15 |
Family
ID=16243054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18954287A Granted JPS6431917A (en) | 1987-07-29 | 1987-07-29 | Method for forming cylindrical fibrous preformed body for reinforcing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6431917A (en) |
-
1987
- 1987-07-29 JP JP18954287A patent/JPS6431917A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6431917A (en) | 1989-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4582682A (en) | Method of producing molded parts by cold isostatic compression | |
| US4927600A (en) | Method for molding of powders | |
| JPS63317246A (en) | Sand molding method and device for composite product consisting of light alloy matrix and fibrous insert | |
| JPH0428771B2 (en) | ||
| EP0328754B1 (en) | Method of forming shaped-body to be sintered | |
| US5135690A (en) | Process for producing cylindrical reinforcing fibrous molding | |
| JPH0428769B2 (en) | ||
| JPH0425333B2 (en) | ||
| JPS624843A (en) | Production of fiber-reinforced composite metallic material | |
| JPH0425334B2 (en) | ||
| JPS5836413Y2 (en) | Thin plate forming equipment | |
| JPH06106329A (en) | Production of composite member made of light alloy | |
| JPH07164195A (en) | Mold for hydrostatic pressure molding for producing powder molding having hollow part and molding method of powder molding | |
| JP2690499B2 (en) | Rubber press molding equipment for tubular fiber moldings | |
| JPH0488604A (en) | Method of wet-pressing oxide permanent magnet material in magnetic field and its molding device | |
| JPS61257442A (en) | Manufacture of composite material | |
| JPH0428770B2 (en) | ||
| JPH0426564A (en) | Production of fiber-reinforced ceramics | |
| JPS62192545A (en) | Production of cylindrical fiber molding for reinforcement | |
| JPH0668140B2 (en) | Method for manufacturing tubular fiber molding for reinforcement | |
| JPH0668143B2 (en) | Method for manufacturing tubular fiber molding for reinforcement | |
| JPS62294103A (en) | Method for molding powder of metal, ceramic or the like | |
| KR890009508A (en) | Method and apparatus for producing tubular green compact | |
| JPH0235429Y2 (en) | ||
| JPH0726070Y2 (en) | Rubber mold for hydrostatic molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |