JP2000061959A - Method for forming hollow molded product and core - Google Patents
Method for forming hollow molded product and coreInfo
- Publication number
- JP2000061959A JP2000061959A JP10241053A JP24105398A JP2000061959A JP 2000061959 A JP2000061959 A JP 2000061959A JP 10241053 A JP10241053 A JP 10241053A JP 24105398 A JP24105398 A JP 24105398A JP 2000061959 A JP2000061959 A JP 2000061959A
- Authority
- JP
- Japan
- Prior art keywords
- core
- molded product
- alloy
- forming
- synthetic resin
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、中空成型物形成方
法及び中子に関するものである。TECHNICAL FIELD The present invention relates to a hollow molded article forming method and a core.
【０００２】[0002]
【従来の技術】金属に換る構造部材として、現在種々の
ＦＲＰが使用されている。これらの成形は半割のメス型
（凹型）を起し、これに樹脂を含浸させた繊維を貼った
後、型合せを行い、内部加圧／加熱により成形後、抜型
するのが一般的製法である。又、ワックス、無機及び有
機塩、崩壊性の良い石膏等を使用して所望形状の中子を
形成し、この外面に合成樹脂を含浸させた繊維を貼着乃
至捲回して加圧／加熱等により熱硬化させて成形する方
法もある。2. Description of the Related Art Various FRPs are currently used as structural members replacing metal. In these moldings, a female mold (concave mold) of half is raised, the resin-impregnated fiber is pasted on it, the molds are matched, the internal pressurization / heating is performed, and then the mold is removed. Is. In addition, wax, inorganic and organic salts, gypsum with good disintegration, etc. are used to form the core of the desired shape, and the fibers impregnated with synthetic resin are attached or wound onto the outer surface of the core to apply pressure / heat, etc. There is also a method of thermosetting and molding.
【０００３】[0003]
【発明が解決しようとする課題】然して、半割のメス型
を使用する方法は、熱硬化樹脂含浸繊維の貼り付け作業
が面倒であり、且つ複雑な形状や細かい部分の形成が困
難であり、又型合せ部分の強度が弱点になる場合があ
る。又、一般的に考えられる材料により中子を用いた方
法は、加熱時の中子の剛性が期待できない。中子抜き作
業が難しく、一部残留の場合がある。又、水溶性の材料
で造られる中子を水で溶出する場合には、廃水の処理に
手間もコストも掛かり、又、中子材料の再利用が出来な
い等難問があり、実用化が至難である。However, in the method of using the half-cut female die, the work of attaching the thermosetting resin-impregnated fiber is troublesome, and it is difficult to form a complicated shape or a fine portion. In addition, the strength of the mold matching portion may become a weak point. In addition, the rigidity of the core during heating cannot be expected in the method using the core due to the generally considered material. Core removal work is difficult, and some may remain. In addition, when a core made of a water-soluble material is eluted with water, it is difficult to put it into practical use due to the difficulty and cost of treating the wastewater and the inability to reuse the core material. Is.
【０００４】[0004]
【課題を解決するための手段】そこで本発明において
は、ガラス繊維、熱硬化樹脂含浸繊維の捲回し乃至貼り
付け作業が簡単であり、且つ複雑な形状の中子が形成で
き、複雑な中空成型物が形成でき、更に外側からの作業
であり部分的に貼る枚数を増やしたり、補強材を挟み込
んだりするなどの強度補強が簡単である。又、中子材料
はリサイクルでき公害性が少ない。加圧成型時に十分な
剛性を有する中子を提供でき、成型物を損傷させない温
度範囲で中子の型抜きが容易で、且つ残留は殆どない等
実用効果の極めて大なる中空成型物形成方法を提案せん
とするもので、第１に２種以上の元素で構成される合金
を用い中子を形成させる工程と、該中子を合成樹脂を含
浸させた各種繊維等の成型物素材にて必要箇処を被覆さ
せる工程と、必要に応じ成型素材の加熱硬化工程と、合
金溶融温度に加熱して中子を溶出させる工程とよりなる
ことを特徴とし、第２に２種以上の元素で構成される合
金を用い中子を形成させる工程と、該中子を合成樹脂を
含浸させた各種繊維等の成型物素材にて必要箇処を被覆
させる工程と、その全体を外枠で囲い、外枠と被覆中子
間に合成樹脂を注入させ加熱硬化させる工程と、合金溶
融温度以上に加熱して中子を溶出させる工程とよりなる
ことを特徴とし、第３に２種以上の元素で構成される合
金を用い中子を形成させる工程と、該中子の必要箇処を
骨材としての各種繊維で被覆する工程と、合成樹脂を注
入加圧／加熱硬化させる工程とよりなることを特徴とす
る。In the present invention, therefore, the work of winding or pasting glass fiber or thermosetting resin-impregnated fiber is simple, and a core having a complicated shape can be formed. Objects can be formed, and it is an operation from the outside, and it is easy to reinforce the strength by partially increasing the number of sheets to be stuck or sandwiching a reinforcing material. Also, the core material can be recycled and has little pollution. A method for forming a hollow molded product that can provide a core having sufficient rigidity during pressure molding, is easy to demold the core within a temperature range that does not damage the molded product, and has almost no practical effect such as almost no residue. This is a proposal. Firstly, it is necessary for the step of forming a core using an alloy composed of two or more elements, and for molding materials such as various fibers impregnated with the synthetic resin. Secondly, it is composed of two or more kinds of elements, which is characterized by comprising a step of covering the parts, a step of heat-hardening the forming material if necessary, and a step of heating to the alloy melting temperature to elute the core. To form a core using the alloy described above, a step of covering the core with a molding material such as various fibers impregnated with a synthetic resin, and enclosing the whole in an outer frame. Injecting a synthetic resin between the frame and the coating core to heat and harden it, and an alloy And a step of forming an inner core using an alloy composed of two or more elements, and a step of melting the inner core. It is characterized by comprising a step of coating the treatment with various fibers as an aggregate and a step of injecting pressure / heat curing the synthetic resin.
【０００５】[0005]
【発明の実施の形態】以下、図に示す実施例により本発
明を詳細に説明する。先ず、中子であるが、中空成型物
の成形温度に対応して融点を調整できる合金により形成
する。これらの合金は、ビスマス、鉛、インジウム、
錫、亜鉛等必要に応じて選ばれる２種以上で構成される
元素で構成される合金が推奨される。これらは公害性が
少なく、リサイクル可能で、圧力、処理温度に対応して
融点を自由に設定できるものであることが望まれる。
又、この合金として市販されているｕアロイ（商品名）
を用いることができ、この場合、融点が４６．７℃〜２
００℃の合金として利用することができる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings. First, the core is made of an alloy whose melting point can be adjusted according to the molding temperature of the hollow molded product. These alloys include bismuth, lead, indium,
An alloy composed of two or more elements selected as necessary such as tin and zinc is recommended. It is desirable that these have low pollution properties, can be recycled, and can have their melting points freely set according to pressure and treatment temperature.
Also, u alloy (trade name) marketed as this alloy
Can be used, in which case the melting point is from 46.7 ° C. to 2
It can be used as an alloy at 00 ° C.
【０００６】これらの元素のうち、例えばインジウムと
亜鉛、錫、鉛、ビスマスと鉛、インジウム等の組合せが
自由に選択でき、温度条件、加圧条件に対応して選定す
る。又、これら元素の含有比率によって、融点を自由に
設定できる。例えば、ビスマス５０％、鉛５０％の合金
の融点は１５０℃であり、ビスマス５６％、鉛４４％の
合金は融点１２５℃である。ビスマス４０％、インジウ
ム６０％の合金の融点は１００℃であり、ビスマス２２
％、インジウム７８％の合金は融点７２℃の如くであ
る。Among these elements, for example, combinations of indium and zinc, tin, lead, bismuth and lead, indium, etc. can be freely selected, and selected according to temperature conditions and pressurization conditions. Further, the melting point can be freely set by the content ratio of these elements. For example, an alloy of bismuth 50% and lead 50% has a melting point of 150 ° C, and an alloy of bismuth 56% and lead 44% has a melting point of 125 ° C. The melting point of an alloy of bismuth 40% and indium 60% is 100 ° C.
%, Indium 78% alloy has a melting point of 72 ° C.
【０００７】中子はこれら合金を使用して公知の方法に
より所望形状に鋳造する。このように形成された中子
に、熱硬化性合成樹脂を含浸させたガラス繊維や炭素繊
維により成るシート或はテープ等の成型物素材を貼着さ
せ或は捲回しさせて被覆して行く。又、部分的に強度の
要求される部分には更に貼着或は捲回しさせ、或は補強
材を挟み補強しておく。The core is cast into a desired shape by a known method using these alloys. A molding material such as a sheet or tape made of glass fiber or carbon fiber impregnated with a thermosetting synthetic resin is attached to or wound on the core thus formed. In addition, a portion where strength is required is further attached or wound, or a reinforcing material is sandwiched and reinforced.
【０００８】成型物素材は、熱硬化性や加圧硬化性合成
樹脂を含浸させたガラス繊維や炭素繊維より一体的に構
成されたシート或はテープを云うが、これに限られず骨
材としてガラス繊維や炭素繊維により構成されたシート
或はテープと前記合成樹脂より成り、ガラス繊維等を中
子に捲回し乃至貼着させた後に、熱硬化性合成樹脂や加
圧硬化性樹脂を浸漬乃至注入により含浸させる方法もあ
る。更に、これらに強度補強材（ハニカム）を加えるこ
とも可能である。又、異種或は同種の成型物素材を所望
数、層状に形成させることもできる。The molding material is a sheet or tape integrally formed of glass fiber or carbon fiber impregnated with a thermosetting or pressure-curing synthetic resin, but is not limited to this and is used as an aggregate. A sheet or tape made of fiber or carbon fiber and the synthetic resin described above. After the glass fiber or the like is wound around or adhered to the core, the thermosetting synthetic resin or pressure-curable resin is dipped or injected. There is also a method of impregnating with. Further, it is possible to add a strength reinforcing material (honeycomb) to these. It is also possible to form a desired number of different types or the same types of molding materials in layers.
【０００９】成型物素材の硬化は、外側加圧や加熱又は
両者による化学反応（合成樹脂の縮合重合や付加重合）
による硬化である。選択する合成樹脂により、加圧力、
加熱温度をそれぞれ選定使用する。The molding material is hardened by a chemical reaction by external pressure or heat or both (condensation polymerization and addition polymerization of synthetic resin).
It is the hardening by. Depending on the synthetic resin selected,
Select and use the heating temperature.
【００１０】これを圧力及び温度調整のできるオートク
レープで所望時間加熱し成型する。或は、収縮テープを
外から巻いた後、所定温度で所定時間加熱し成型する。
この時の処理条件は中子の融点以下の温度であることが
必要であるが、含浸させる合成樹脂により適宜設定す
る。例えば、エポキシ樹脂を含浸させた炭素繊維及びガ
ラス繊維の場合、１２０℃にて成型できるようにし、そ
の際中子は例えば大気圧にて１５０℃の融点を有する如
く設定しておけば、例えば１２０℃、３気圧のオートク
レーブで２時間の成型後、大気圧中で温度を１６０℃に
上げると中子は溶けて流出する。この流出した合金は回
収して次の中子形成の材料として使用する。This is heated and molded for a desired time in an autoclave whose pressure and temperature can be adjusted. Alternatively, the shrink tape is wound from the outside and then heated at a predetermined temperature for a predetermined time to be molded.
The treatment condition at this time needs to be a temperature equal to or lower than the melting point of the core, but is appropriately set depending on the synthetic resin to be impregnated. For example, carbon fibers and glass fibers impregnated with an epoxy resin can be molded at 120 ° C., and if the core is set to have a melting point of 150 ° C. at atmospheric pressure, for example, 120 After molding in an autoclave at 3 ° C. for 2 hours at a temperature of 160 ° C. under atmospheric pressure, the core melts and flows out. The spilled alloy is recovered and used as a material for the next core formation.
【００１１】又、外枠を使用する場合は、合成樹脂を含
浸した炭素繊維やガラス繊維或は含浸しないこれらの繊
維や強度補強材を中子に捲回したり、貼着したりして、
これらを外枠で囲い、該外枠等と成型物素材で被覆され
た中子間、更に、エポキシ樹脂等を注入して加熱硬化さ
せ、強化することもできる。When an outer frame is used, carbon fibers or glass fibers impregnated with synthetic resin or those fibers not impregnated or a strength reinforcing material are wound around or attached to a core,
It is also possible to enclose these with an outer frame, and inject between them with an epoxy resin or the like between the outer frame and the core covered with the molding material, and heat-harden to strengthen.
【００１２】[0012]
【実施例】〔実施例１〕中子１を、融点１５０℃に設定
したビスマス５０％、鉛５０％含有の合金にて形成す
る。該中子１にエポキシ樹脂含浸炭素繊維及びガラス繊
維にて形成したシート（プリプレグ）２、を貼着して行
き中子を被覆する。これをオートクレープに収納後、３
気圧、２時間、１２０℃で成型する。成型後、温度を大
気圧中で１６０℃まで上げて中子１を溶出させた。中子
の部分は中空となり、熱硬化樹脂繊維の中空成型品が完
成した。[Example 1] A core 1 is formed of an alloy containing 50% bismuth and 50% lead, the melting point of which is set to 150 ° C. A sheet (prepreg) 2 formed of carbon fiber and glass fiber impregnated with epoxy resin is attached to the core 1 to cover the core. After storing this in the autoclave, 3
Mold at atmospheric pressure for 2 hours at 120 ° C. After molding, the temperature was raised to 160 ° C. under atmospheric pressure to elute the core 1. The core portion became hollow, and a hollow molded product of thermosetting resin fiber was completed.
【００１３】〔実施例２〕中子１を大気圧中でのｕアロ
イ１０２を用いて形成した。これをエポシキ樹脂含浸炭
素繊維と強度補強材（ハニカム）にて多重に被覆した
後、外枠で囲いエポキシ樹脂を注入した後８０℃の温度
２．５気圧オートクレープで３時間成型後、更に温度を
大気中で１０５℃に上げ中子１を溶出し、成型品を完成
させた。Example 2 Core 1 was formed using u alloy 102 at atmospheric pressure. This is coated with epoxy resin-impregnated carbon fiber and strength-reinforcing material (honeycomb) in multiple layers, then surrounded by an outer frame and filled with epoxy resin. After molding with an autoclave at a temperature of 80 ° C and a pressure of 2.5 atm for 3 hours, the temperature is further increased. Was raised to 105 ° C. in the atmosphere to elute Core 1 to complete a molded product.
【００１４】[0014]
【発明の効果】請求項１の発明によれば、２種以上の元
素で構成される合金を用い中子を形成させる工程と、該
中子を合成樹脂を含浸させた各種繊維等の成型物素材に
て必要箇処を被覆させる工程と、必要に応じ成型物素材
の加熱硬化工程と、合金溶融温度に加熱して中子を溶出
させる工程とよりなるので、中子を被覆する成型物素材
の貼り付け等の被覆作業が簡単になり、より複雑な中子
の形状に対応して複雑な中空体が形成できる。又、必要
に応じて部分的に成型物素材を幾層にも張り付ける等に
より、部分的強度補強が容易にできる。中子は加圧／加
熱硬化成型時に十分な剛性を有し、硬化温度により融点
を調整でき各種成型物素材に対応できる。更に中子は成
型物を損傷させない温度範囲で処理でき、型抜きが容易
で残留が殆どない他、リサイクルができ、且つ公害性が
少ない等の効果を有する。According to the invention of claim 1, a step of forming a core using an alloy composed of two or more kinds of elements, and molded articles such as various fibers in which the core is impregnated with a synthetic resin. A molding material that coats the core because it consists of a step of covering the necessary parts with the material, a heat curing step of the molding material if necessary, and a step of heating to the alloy melting temperature to elute the core The covering work such as sticking is simplified, and a complicated hollow body can be formed corresponding to a more complicated core shape. Further, if necessary, the material of the molded product may be partially laminated in several layers to facilitate the partial strength reinforcement. The core has sufficient rigidity at the time of pressure / heat curing molding, and its melting point can be adjusted by the curing temperature so that it can be used for various molding materials. Furthermore, the core has the effects that it can be treated in a temperature range that does not damage the molded product, that it can be easily removed from the mold and has little residue, that it can be recycled, and that it is less polluting.
【００１５】請求項２によれば、請求項１に効果の他
に、外枠により外表面の歪等がなく滑らかに仕上がり、
製品が美麗であり、更に大なる強度と大型製品に対応で
きる効果を有する。According to the second aspect, in addition to the effect of the first aspect, the outer frame has a smooth finish without distortion of the outer surface,
The product is beautiful, and has the effect of being able to deal with greater strength and larger products.
【００１５】請求項３によれば、請求項１，２の効果の
他に、強度の調整、肉厚の調整などを簡単にできる。According to the third aspect, in addition to the effects of the first and second aspects, it is possible to easily adjust the strength and the wall thickness.
【００１６】請求項４によれば、上記各効果の他に更
に、所望の強度が得られ、大型製品形成が容易になる効
果を有する。According to the fourth aspect, in addition to the above respective effects, there is an effect that desired strength is obtained and a large-sized product is easily formed.
【００１７】請求項５によれば、各種の合金により所望
の溶融温度を有する中子が得られるほか、強度のある複
雑な形状、細かい部分の形成が容易で、且つ型抜きも容
易で残留のない中子が提供できる。According to the fifth aspect, a core having a desired melting temperature can be obtained from various alloys, and a complicated and strong shape and a fine portion can be easily formed, and die cutting can be easily performed to leave a residue. No core can provide.
【図１】本発明一実施例斜面図。FIG. 1 is a perspective view of an embodiment of the present invention.
１ 中子 ２ シート 1 core 2 sheets
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Claims (5)
子を形成させる工程と、該中子を合成樹脂を含浸させた
各種繊維等の成型物素材にて必要箇処を被覆させる工程
と、必要に応じ成型素材の加熱硬化工程と、合金溶融温
度に加熱して中子を溶出させる工程とよりなることを特
徴とする中空成型物形成方法。1. A step of forming a core using an alloy composed of two or more kinds of elements, and the core is covered with a molding material such as various fibers impregnated with a synthetic resin. A method for forming a hollow molded article, which comprises a step, a step of heating and hardening a forming material as necessary, and a step of heating to an alloy melting temperature to elute the core.
子を形成させる工程と、該中子を合成樹脂を含浸させた
各種繊維等の成型物素材にて必要箇処を被覆させる工程
と、その全体を外枠で囲い、外枠と被覆中子間に合成樹
脂を注入させ加熱硬化させる工程と、合金溶融温度以上
に加熱して中子を溶出させる工程とよりなることを特徴
とする中空成型物形成方法。2. A step of forming a core using an alloy composed of two or more kinds of elements, and covering the core with a molding material such as various fibers impregnated with a synthetic resin. It is characterized in that it consists of a process, a process of enclosing the whole with an outer frame, injecting a synthetic resin between the outer frame and the covering core to heat-harden it, and heating the alloy melting temperature or higher to elute the core And a method for forming a hollow molded article.
子を形成させる工程と、該中子の必要箇処を骨材として
の各種繊維で被覆する工程と、合成樹脂を注入加圧／加
熱硬化させる工程とよりなることを特徴とする中空成型
物形成方法。3. A step of forming a core using an alloy composed of two or more elements, a step of coating necessary portions of the core with various fibers as an aggregate, and a synthetic resin injection process. A method for forming a hollow molded article, which comprises a step of pressure / heat curing.
び強度補強材を幾層にも被覆させることを特徴とする請
求項１，２又は３に記載の中空成型物形成方法。4. The method for forming a hollow molded article according to claim 1, wherein the molded material is formed by coating several layers of fibers and a strength reinforcing material in any number of layers as required.
成された中空成型物形成用中子。5. A hollow molded product forming core made of an alloy composed of two or more elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10241053A JP2000061959A (en) | 1998-08-12 | 1998-08-12 | Method for forming hollow molded product and core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10241053A JP2000061959A (en) | 1998-08-12 | 1998-08-12 | Method for forming hollow molded product and core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000061959A true JP2000061959A (en) | 2000-02-29 |
Family
ID=17068617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10241053A Pending JP2000061959A (en) | 1998-08-12 | 1998-08-12 | Method for forming hollow molded product and core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000061959A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2901731A1 (en) * | 2006-06-01 | 2007-12-07 | Coutier Moulage Gen Ind | Manufacturing flexible reinforced hollow body e.g. pipe in complex elastomer material, comprises executing complex folding mandrel in the form of solid core, depositing flexible framework, and molding the material by injection/compression |
| FR2972956A1 (en) * | 2011-03-25 | 2012-09-28 | Cogit Composites | Method for manufacturing tubular unit i.e. tube, that is utilized in e.g. application field, involves allowing mold to be made of phase change material, and changing phase of mold after curable material is solidified |
| WO2014028169A2 (en) * | 2012-07-20 | 2014-02-20 | Mag Aerospace Industries, Inc | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| AT514984A3 (en) * | 2013-10-25 | 2016-06-15 | Benteler Sgl Gmbh & Co Kg | Process for producing a hollow fiber composite component |
| CN108656577A (en) * | 2018-04-26 | 2018-10-16 | 西安亚龙航空机电有限责任公司 | High-precision answers material and is molded special-purpose metal core model manufacture craft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08150665A (en) * | 1994-11-30 | 1996-06-11 | Hitachi Chem Co Ltd | Production of composite structural material |
| JPH09272164A (en) * | 1996-04-05 | 1997-10-21 | Showa Aircraft Ind Co Ltd | Manufacture of curved-face honeycomb panel |
| JPH09323365A (en) * | 1996-06-06 | 1997-12-16 | Toyota Autom Loom Works Ltd | Gas fuel tank and its molding method |
-
1998
- 1998-08-12 JP JP10241053A patent/JP2000061959A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08150665A (en) * | 1994-11-30 | 1996-06-11 | Hitachi Chem Co Ltd | Production of composite structural material |
| JPH09272164A (en) * | 1996-04-05 | 1997-10-21 | Showa Aircraft Ind Co Ltd | Manufacture of curved-face honeycomb panel |
| JPH09323365A (en) * | 1996-06-06 | 1997-12-16 | Toyota Autom Loom Works Ltd | Gas fuel tank and its molding method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2901731A1 (en) * | 2006-06-01 | 2007-12-07 | Coutier Moulage Gen Ind | Manufacturing flexible reinforced hollow body e.g. pipe in complex elastomer material, comprises executing complex folding mandrel in the form of solid core, depositing flexible framework, and molding the material by injection/compression |
| FR2972956A1 (en) * | 2011-03-25 | 2012-09-28 | Cogit Composites | Method for manufacturing tubular unit i.e. tube, that is utilized in e.g. application field, involves allowing mold to be made of phase change material, and changing phase of mold after curable material is solidified |
| WO2014028169A2 (en) * | 2012-07-20 | 2014-02-20 | Mag Aerospace Industries, Inc | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| WO2014028169A3 (en) * | 2012-07-20 | 2014-03-27 | Mag Aerospace Industries, Inc | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| US9458955B2 (en) | 2012-07-20 | 2016-10-04 | Mag Aerospace Industries, Llc | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| EP2874791B1 (en) | 2012-07-20 | 2018-12-19 | MAG Aerospace Industries, LLC | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| AT514984A3 (en) * | 2013-10-25 | 2016-06-15 | Benteler Sgl Gmbh & Co Kg | Process for producing a hollow fiber composite component |
| AT514984B1 (en) * | 2013-10-25 | 2016-09-15 | Benteler Sgl Gmbh & Co Kg | Process for producing a hollow fiber composite component |
| CN108656577A (en) * | 2018-04-26 | 2018-10-16 | 西安亚龙航空机电有限责任公司 | High-precision answers material and is molded special-purpose metal core model manufacture craft |
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