JPH0425334B2 - - Google Patents
Info
- Publication number
- JPH0425334B2 JPH0425334B2 JP1161286A JP1161286A JPH0425334B2 JP H0425334 B2 JPH0425334 B2 JP H0425334B2 JP 1161286 A JP1161286 A JP 1161286A JP 1161286 A JP1161286 A JP 1161286A JP H0425334 B2 JPH0425334 B2 JP H0425334B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molded body
- hollow core
- body material
- molding
- 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
- 239000000463 material Substances 0.000 claims description 44
- 239000000835 fiber Substances 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 14
- 239000012778 molding material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Paper (AREA)
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成形体の製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Industrial Application Field The present invention relates to a method for manufacturing a reinforcing cylindrical fiber molded body used for fiber reinforcing a metal member or the like.
(2) 従来の技術
従来、この種繊維成形体は、通気性を有する筒
状成形型の両端開口部を密封し、その成形型を強
化繊維および無機バインダを含む成形材料の水溶
液中に浸漬し、その成形型内に吸引作用を施すこ
とにより成形材料を成形型の外周面に付着させて
成形体素材を成形する工程、成形体素材を成形型
に押圧して成形体素材の形状を整える工程、成形
型の両端開口部を開放し、また成形型を成形体素
材より引抜く工程、成形体素材を加熱乾燥する工
程および成形体素材を焼成して無機バインダによ
り強化繊維を部分的に結合する工程を経て製造さ
れる。(2) Conventional technology Conventionally, this type of fiber molded article is produced by sealing the openings at both ends of a cylindrical mold with air permeability, and immersing the mold in an aqueous solution of a molding material containing reinforcing fibers and an inorganic binder. , a process of applying a suction action within the mold to make the molding material adhere to the outer peripheral surface of the mold to form a molded body material, a process of pressing the molded body material against the mold to adjust the shape of the molded body material , a process of opening both end openings of the mold and pulling the mold from the molded body material, a process of heating and drying the molded body material, and a process of firing the molded body material and partially bonding the reinforcing fibers with an inorganic binder. Manufactured through a process.
(3) 発明が解決しようとする問題点
しかしながら、前記のように成形体素材の加熱
乾燥前に成形型を成形体素材より引抜くと、その
成形体素材は多量の水分を含有し、保形性が悪い
ので、成形体素材が変形して繊維成形体の寸法精
度が悪化するという問題がある。(3) Problems to be Solved by the Invention However, as mentioned above, when the mold is pulled out from the molded material before the molded material is heated and dried, the molded material contains a large amount of water and has a tendency to retain its shape. Because of the poor properties, there is a problem that the molded body material is deformed and the dimensional accuracy of the fiber molded body is deteriorated.
本発明は前記問題を解決し得る前記製造方法を
提供することを目的とする。 An object of the present invention is to provide the manufacturing method capable of solving the above 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、高温加熱下で完全崩壊し得るように
薄肉で通気性を有する筒状成形型に、周壁に多数
の通気孔を持ち剛性を有する中空コアを嵌合して
該成形型および中空コアの両端開口部を密封し、
前記成形型および中空コアを強化繊維および無機
バインダを含む成形材料の水溶液中に浸漬し、前
記中空コア内に吸引作用を施すことにより前記成
形材料を前記成形型の外周面に付着させて成形体
素材を成形する工程と；前記成形体素材を前記成
形型に押圧して該成形体素材の形状を整える工程
と；前記中空コアを前記成形型より引抜く工程
と；前記成形体素材を前記成形型の崩壊温度より
も低温で加熱乾燥する工程と；前記成形型を崩壊
温度以上に加熱して該成形型を完全に崩壊する工
程と；前記成形体素材を焼成して前記無機バイン
ダにより前記強化繊維を部分的に結合する工程
と；を用いることを特徴とする。B. Structure of the Invention (1) Means for Solving Problems The present invention consists of a cylindrical mold that is thin and air permeable so as to be completely disintegrated under high-temperature heating, and has many ventilation holes in the peripheral wall and is rigid. fitting a hollow core having a shape and sealing both end openings of the mold and the hollow core;
The mold and the hollow core are immersed in an aqueous solution of a molding material containing reinforcing fibers and an inorganic binder, and suction is applied to the inside of the hollow core to cause the molding material to adhere to the outer circumferential surface of the mold, thereby producing a molded product. a step of molding the material; a step of pressing the molded material into the mold to adjust the shape of the molded material; a step of pulling out the hollow core from the mold; a step of molding the molded material into the mold. heating and drying the mold at a temperature lower than the collapse temperature of the mold; heating the mold to a temperature higher than the collapse temperature to completely collapse the mold; firing the molded body material and reinforcing it with the inorganic binder. It is characterized by using a step of partially bonding the fibers.
(2) 作用
成形型は薄肉であるから成形体素材の成形時成
形材料の吸引を効率良く行うことができ、成形作
業が迅速に行われる。(2) Effect Since the mold is thin, the molding material can be efficiently sucked during molding of the molded body material, and the molding operation can be performed quickly.
成形型に剛性を持つ中空コアを嵌合するので、
成形体素材の成形および整形工程において成形型
が薄肉でもその破壊を防止することができる。 Since a rigid hollow core is fitted to the mold,
Even if the mold is thin, it can be prevented from breaking during the molding and shaping process of the molded body material.
中空コアを成形型より引き抜いた後成形体素材
を加熱乾燥するので、中空コアの熱膨脹により成
形型を破壊し、また成形体素材を変形することが
ない。この場合、中空コアを成形型より引抜くの
であり、成形体素材から引抜くのではないから、
中空コアの引抜きに当り成形体素材に形状変化を
与えることがない。 Since the molded body material is heated and dried after the hollow core is pulled out from the mold, the mold will not be destroyed due to thermal expansion of the hollow core, and the molded body material will not be deformed. In this case, the hollow core is pulled out from the mold, not from the molded body material.
No shape change is caused to the molded body material when the hollow core is drawn out.
成形型を高温加熱して完全に崩壊するので、成
形体素材を変形することなく成形型を簡単に除去
することができ、また成形型の引抜き工程を省く
ことができる。 Since the mold is completely disintegrated by heating to a high temperature, the mold can be easily removed without deforming the molded body material, and the step of pulling out the mold can be omitted.
(3) 実施例
第１図は本発明により得られた強化用筒状繊維
成形体１を示し、その繊維成形体１は、強化繊維
としての炭素繊維およびアルミナ繊維の混合短繊
維を、無機バインダとしてのシリカゾル、アルミ
ナゾル、またはそれらの混合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
の空隙を有する。(3) Example FIG. 1 shows a reinforcing cylindrical fiber molded body 1 obtained according to the present invention. It is partially bonded by silica sol, alumina sol, or a mixed sol thereof, and has countless voids 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
AFS35）を用いて通気性を有する円筒状成形型
２を形成する。この成形型２の外径は75mm、厚さ
は約2.5mmで、圧環強さは40Kg／cm2である。また
成形型２はシエル砂より構成され、また薄肉であ
るから、350〜400℃に高温加熱されると完全に崩
壊するいう性質を有する。 As shown in Figure 2a, shell sand (grain size
A cylindrical mold 2 with air permeability is formed using AFS35). The mold 2 has an outer diameter of 75 mm, a thickness of about 2.5 mm, and a radial crushing strength of 40 Kg/cm 2 . Furthermore, since the mold 2 is made of shell sand and has a thin wall, it has the property of completely collapsing when heated to a high temperature of 350 to 400°C.
第２図ｂに示すように、周壁外面に開口する複
数の環状溝Ｇと、各環状溝Ｇ底面および周壁内面
にそれぞれ開口する多数の通気孔Ｈを有する中空
コアC0をアルミニウム合金より形成する。これ
により中空コアC0は剛性を持つ。また中空コア
C0の外周面には略30分の抜き勾配が付されてい
る。 As shown in FIG. 2b, a hollow core C0 having a plurality of annular grooves G opening on the outer surface of the circumferential wall and a large number of ventilation holes H opening on the bottom surface of each annular groove G and the inner surface of the circumferential wall is formed from an aluminum alloy. . As a result, the hollow core C 0 has rigidity. Also hollow core
A draft angle of approximately 30 minutes is attached to the outer peripheral surface of C 0 .
第２図ｃに示すように、中空コアC0を成形型
２に嵌合する。 As shown in FIG. 2c, the hollow core C 0 is fitted into the mold 2.
第２図ｄに示すように、成形型２および中空コ
アC0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. 2d, holders 3 1 and 3 2 are attached to the openings at both ends of the mold 2 and the hollow core C 0 by bonding, bolting, etc., and the openings are sealed.
第２図ｅに示すように、炭素繊維およびアルミ
ナ繊維の混合繊維とアルミナゾルを含む成形材料
の水溶液４中に成形型２および中空コアC0を浸
漬し、真空ポンプ５により中空コアC0内に吸引
作用を施して成形材料を成形型２の外周面に所定
の厚さに付着させ、成形体素材６を成形する。こ
の場合、成形型２が薄肉であるから成形材料の吸
引が効率良く行われ、真空ポンプ５による成形作
業は略１分と短時間で良い。 As shown in FIG. 2e, the mold 2 and the hollow core C 0 are immersed in an aqueous solution 4 of a molding material containing mixed fibers of carbon fibers and alumina fibers and alumina sol, and then pumped into the hollow core C 0 by a vacuum pump 5. A suction action is applied to make the molding material adhere to the outer peripheral surface of the mold 2 to a predetermined thickness, and the molded body material 6 is molded. In this case, since the mold 2 has a thin wall, the molding material can be suctioned efficiently, and the molding operation by the vacuum pump 5 only takes about 1 minute, which is a short time.
第２図ｆに示すように、成形型２および中空コ
アC0をラバープレスの耐圧容器７内に設置し、
空圧源８より加圧空気を耐圧容器７内に供給して
ラバー９を介し成形体素材６を成形型２の外周面
に10Kg／cm2の圧力を以て押圧し、これにより成形
体素材６の形状を整え、同時に密度を決定する。 As shown in FIG. 2 f, the mold 2 and the hollow core C 0 are placed in the pressure container 7 of the rubber press,
Pressurized air is supplied from the air pressure source 8 into the pressure container 7 to press the molded body material 6 against the outer peripheral surface of the mold 2 through the rubber 9 with a pressure of 10 kg/cm 2 . Adjust the shape and determine the density at the same time.
前記成形体素材６の成形および整形工程におい
て、薄肉の成形型２は中空コアC0により補強さ
れているから破壊することはない。 During the molding and shaping process of the molded body material 6, the thin mold 2 is reinforced by the hollow core C0 , so that it will not break.
第２図ｇに示すように、成形型２および中空コ
アC0より両ホルダ３1，３2を取外す。 As shown in FIG. 2g, both holders 3 1 and 3 2 are removed from the mold 2 and the hollow core C 0 .
第２図ｈに示すように、中空コアC0を成形型
２より引抜く。この場合、中空コアC0の引抜き
は前記抜き勾配を利用して容易に行われ、また成
形体素材６に何等力を加えることがないので成形
体素材６を変形することがない。 As shown in FIG. 2h, the hollow core C 0 is pulled out from the mold 2. In this case, the hollow core C 0 is easily pulled out using the draft angle, and since no force is applied to the molded body material 6, the molded body material 6 is not deformed.
第２図ｉに示すように、成形型２を乾燥炉１０
内に設置し、成形体素材６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 Figure 2i, the mold 2 is placed in a drying oven 10.
The molded body material 6 is dried at 120° C. for 1 hour to evaporate and remove moisture.
第２図ｊに示すように、成形型２を焼成炉１１
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
薄肉でであるから完全に崩壊する。 As shown in FIG. 2j, the mold 2 is placed in the firing furnace 11.
The mold 2 is disintegrated at 350 to 400°C for 1 hour. Due to this disintegration process, the mold 2 is completely disintegrated since it is thin.
引続き成形体素材６に800℃にて１時間の焼成
処理を施す。これによりアルミナゾルにより混合
繊維を部分的に結合されて第１図に示す繊維成形
体１が得られる。 Subsequently, the molded body material 6 is subjected to firing treatment at 800° C. for 1 hour. As a result, the mixed fibers are partially bonded by the alumina sol, and the fiber molded body 1 shown in FIG. 1 is obtained.
前記成形型２を厚肉（例えば５mm）に形成する
ことにより、その型２に成形および整形工程に耐
え得るだけの圧環強さを持たせれば中空コアを省
くことができるが、このように成形型２を厚肉に
形成すると、成形材料の吸引効率が低下して成形
体素材の成形作業時間が長くなり、また成形材料
量が嵩み、さらに崩壊処理において成形型を完全
に崩壊することができなくなる。 The hollow core can be omitted by forming the mold 2 with a thick wall (for example, 5 mm) so that the mold 2 has enough radial crushing strength to withstand the molding and shaping process. If the mold 2 is formed to have a thick wall, the suction efficiency of the molding material will decrease, the molding operation time for the molded body material will become longer, the amount of molding material will increase, and furthermore, the mold may not completely collapse during the collapse process. become unable.
Ｃ 発明の効果
本発明によれば、成形型を薄肉に形成したの
で、成形体素材の成形時成形材料の吸引を効率良
く行い、成形作業を迅速に行うことができる。C Effects of the Invention According to the present invention, since the mold is formed with a thin wall, the molding material can be efficiently sucked during molding of the molded body material, and the molding operation can be performed quickly.
また成形型に剛性を持つ中空コアを嵌合するの
で、成形体素材の成形および整形工程において成
形型が薄肉でもその破壊を防止することができ
る。 Furthermore, since a rigid hollow core is fitted into the mold, even if the mold is thin, it can be prevented from breaking during the molding and shaping process of the molded body material.
さらに中空コアを成形型より引き抜いた後成形
体素材を加熱乾燥するので、中空コアの熱膨脹に
より成形型を破壊したり、また成形体素材を変形
することがない。この場合、中空コアを成形型よ
り引抜くのであり、成形体素材より引抜くのでは
ないから、中空コアの引抜きに当り成形体素材に
形状変化を与えることがない。 Furthermore, since the molded body material is heated and dried after the hollow core is pulled out from the mold, the mold is not destroyed or the molded body material is not deformed due to thermal expansion of the hollow core. In this case, since the hollow core is pulled out from the mold and not from the molded body material, the shape of the molded body material is not changed when the hollow core is pulled out.
さらにまた成形型を高温加熱して完全に崩壊す
るので、成形体素材を変形することなく成形型を
簡単に除去することができ、また成形型の引抜き
工程を省くことができる。 Furthermore, since the mold is completely disintegrated by heating to a high temperature, the mold can be easily removed without deforming the molded body material, and the step of pulling out the mold can be omitted.
したがつて、本発明によつて寸法精度の良い繊
維成形体を能率良く、安価に生産することができ
る。 Therefore, according to the present invention, fiber molded articles with good dimensional accuracy can be produced efficiently and at low cost.
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である。
C0…中空コア、Ｈ…通気孔、１…繊維成形体、
２…成形型、４…水溶液、５…真空ポンプ、６…
成形体素材、８…空圧源、１０…乾燥炉、１１…
焼成炉。
FIG. 1 is a perspective view of a fiber molded product, and FIG. 2 is an explanatory diagram of the manufacturing process of the fiber molded product. C0 ...Hollow core, H...Vent hole, 1...Fiber molded body,
2... Molding mold, 4... Aqueous solution, 5... Vacuum pump, 6...
Molded body material, 8... Air pressure source, 10... Drying oven, 11...
Firing furnace.
Claims (1)
気性を有する筒状成形型に、周壁に多数の通気孔
を持ち剛性を有する中空コアを嵌合して該成形型
および中空コアの両端開口部を密封し、前記成形
型および中空コアを強化繊維および無機バインダ
を含む成形材料の水溶液中に浸漬し、前記中空コ
ア内に吸引作用を施すことにより前記成形材料を
前記成形型の外周面に付着させて成形体素材を成
形する工程と；前記成形体素材を前記成形型に押
圧して該成形体素材の形状を整える工程と；前記
中空コアを前記成形型より引抜く工程と；前記成
形体素材を前記成形型の崩壊温度よりも低温で加
熱乾燥する工程と；前記成形型を崩壊温度以上に
加熱して該成形型を完全に崩壊する工程と；前記
成形体素材を焼成して前記無機バインダにより前
記強化繊維を部分的に結合する工程と；を用いる
ことを特徴とする強化用筒状繊維成形体の製造方
法。1. A rigid hollow core with numerous ventilation holes in the peripheral wall is fitted into a thin-walled, breathable cylindrical mold that can completely collapse under high-temperature heating, and both ends of the mold and hollow core are opened. The mold and hollow core are immersed in an aqueous solution of a molding material containing reinforcing fibers and an inorganic binder, and the molding material is applied to the outer peripheral surface of the mold by applying suction into the hollow core. a step of adhering the molded body material to form a molded body material; a step of pressing the molded body material against the mold to adjust the shape of the molded body material; a step of pulling out the hollow core from the mold; and a step of the molding. heating and drying the body material at a temperature lower than the collapse temperature of the mold; heating the mold to a temperature higher than the collapse temperature to completely collapse the mold; firing the mold material to A method for manufacturing a reinforcing cylindrical fiber molded article, comprising: partially bonding the reinforcing fibers with an inorganic binder.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1161286A JPS62170600A (en) | 1986-01-22 | 1986-01-22 | Method for manufacturing reinforcing cylindrical fiber molded product |
| GB8701266A GB2187995B (en) | 1986-01-22 | 1987-01-21 | Process for producing cylindrical reinforcing fibrous molding |
| CA000527875A CA1290562C (en) | 1986-01-22 | 1987-01-21 | Process for producing cylindrical reinforcing fibrous molding |
| US07/006,697 US5135690A (en) | 1986-01-22 | 1987-01-22 | Process for producing cylindrical reinforcing fibrous molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1161286A JPS62170600A (en) | 1986-01-22 | 1986-01-22 | Method for manufacturing reinforcing cylindrical fiber molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62170600A JPS62170600A (en) | 1987-07-27 |
| JPH0425334B2 true JPH0425334B2 (en) | 1992-04-30 |
Family
ID=11782732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1161286A Granted JPS62170600A (en) | 1986-01-22 | 1986-01-22 | Method for manufacturing reinforcing cylindrical fiber molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62170600A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2690499B2 (en) * | 1988-04-25 | 1997-12-10 | 本田技研工業株式会社 | Rubber press molding equipment for tubular fiber moldings |
-
1986
- 1986-01-22 JP JP1161286A patent/JPS62170600A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62170600A (en) | 1987-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |