JPH05185169A - Production of sandwich panel - Google Patents
Production of sandwich panelInfo
- Publication number
- JPH05185169A JPH05185169A JP4002897A JP289792A JPH05185169A JP H05185169 A JPH05185169 A JP H05185169A JP 4002897 A JP4002897 A JP 4002897A JP 289792 A JP289792 A JP 289792A JP H05185169 A JPH05185169 A JP H05185169A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- sheets
- face
- panel
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003796 beauty Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 239000002184 metal Substances 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 7
- 230000037303 wrinkles Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/055—Blanks having super-plastic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
- B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、軽量、高強度を要求さ
れる金属サンドイッチパネルの製作方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a metal sandwich panel which is required to be lightweight and have high strength.
【０００２】[0002]
【従来の技術】従来の接合先行型で超塑性を利用する金
属サンドイッチパネルの製作方法は、図２に示すように
コアシート０１とフェースシート０２の所定の個所を接
合した後、上型７と下型８を配設し、コアシート０１と
フェースシート０２の間に流体圧Ｐを加えて成形するも
のであった。2. Description of the Related Art A conventional method of manufacturing a metal sandwich panel using superplasticity in a joining-first type is to join a core sheet 01 and a face sheet 02 at predetermined positions as shown in FIG. The lower mold 8 was disposed, and the fluid pressure P was applied between the core sheet 01 and the face sheet 02 to perform molding.
【０００３】上記コアシート０１を超塑性成形するため
の流体圧Ｐはフェースシート０２にも同様の力で作用
し、フェースシート０２にも変形が生じて、フェースシ
ート０２が金型７，８に密着する成形終了時には、フェ
ースシート０２の肉余りによりしわや凹み０３が発生す
ることがあった。The fluid pressure P for superplastically molding the core sheet 01 acts on the face sheet 02 with the same force, and the face sheet 02 is also deformed, so that the face sheet 02 is applied to the molds 7 and 8. Wrinkles and dents 03 were sometimes generated due to the excess thickness of the face sheet 02 at the end of the molding for close contact.
【０００４】このフェースシート０２に発生するしわ、
凹み０３を防止するため、従来は以下に説明する金型ス
ライド方式、板厚制御方式及び材質（変形抵抗）制御方
式が検討され実施されていた。Wrinkles generated on the face sheet 02,
In order to prevent the depression 03, conventionally, a mold slide system, a plate thickness control system, and a material (deformation resistance) control system described below have been studied and implemented.
【０００５】金型スライド方式とは、フェースシート０
２が上下の金型に密着したままコアシート０１のみが成
形されるようにするため、図３に示すように上下の金型
７ａ，８ａが最終形状まで所定の速度でスライドして行
く方式である。The mold slide system is a face sheet 0
In order to form only the core sheet 01 while the 2 is in close contact with the upper and lower molds, as shown in FIG. 3, the upper and lower molds 7a and 8a are slid to a final shape at a predetermined speed. is there.
【０００６】板厚制御方式とは、フェースシート０２の
板厚をコアシート０１に比較して厚くすることによりフ
ェースシート０２の変形抵抗を相対的に大きくして、コ
アシート０１のみを変形させる方式である。The plate thickness control system is a system in which the face sheet 02 is made thicker than the core sheet 01 so that the deformation resistance of the face sheet 02 is relatively increased and only the core sheet 01 is deformed. Is.
【０００７】また、材質（変形抵抗）制御方式とは、コ
アシート０１に比較して所定の成形温度における変形抵
抗が大きいフェースシート０２を用いることにより、コ
アシート０１が超塑性成形されるときのフェースシート
０２の変形を防止する方式である。The material (deformation resistance) control method means that when the core sheet 01 is superplastically formed, a face sheet 02 having a larger deformation resistance at a predetermined forming temperature than the core sheet 01 is used. This is a method of preventing the deformation of the face sheet 02.
【０００８】[0008]
【発明が解決しようとする課題】従来の接合先行型で超
塑性を利用する金属サンドイッチパネルの製作方法にお
いて、前記の３つの方式はいずれもフェースシートに発
生するしわや凹みを防止する効果を有していた。In the conventional method of manufacturing a metal sandwich panel which uses superplasticity in the joining-first type, all of the above-mentioned three methods have an effect of preventing wrinkles and dents generated in the face sheet. Was.
【０００９】しかしながら、同時に各々以下のような欠
点を有しており、しわや凹みを防止するためにパネル形
状、コア／フェース板厚比、コアとフェースの材質及び
組織の組合せ等に関する設計自由度、更にはこれに伴う
パネル性能を犠牲にしなければならないという課題があ
った。 （１）金型スライド方式は、適用可能なパネル形状の制
約が大きく、また金型構造装置が複雑でコストが極めて
高い。 （２）板厚制御方式は、コア／フェース板厚比の制約が
大きく、多くの場合、成形後にフェースシートの板厚加
工（機械加工による薄肉化）が必要である。 （３）材質（変形抵抗）制御方式は、コアシートとフェ
ースシートの材質、組織の組合せに関する制約が大き
く、パネルの性能要求に合致した材質（組織）の選定が
不可能となる場合が多い。However, each of them has the following drawbacks at the same time, and the degree of freedom in design regarding the panel shape, the core / face plate thickness ratio, the material of the core and the face, the combination of the structures and the like in order to prevent wrinkles and dents. Furthermore, there is a problem that the panel performance accompanying this must be sacrificed. (1) The mold slide method has a large restriction on the applicable panel shape, and the mold structure device is complicated and the cost is extremely high. (2) In the plate thickness control system, the core / face plate thickness ratio is largely restricted, and in many cases, face plate thickness processing (thinning by machining) is required after molding. (3) In the material (deformation resistance) control method, there are many restrictions on the combination of the material and the structure of the core sheet and the face sheet, and it is often impossible to select the material (structure) that meets the performance requirements of the panel.
【００１０】本発明は上記の課題を解決しようとするも
のである。The present invention is intended to solve the above problems.
【００１１】[0011]
【課題を解決するための手段】本発明のサンドイッチパ
ネルの製作方法は、フェースシートの間にコアシートを
配設しシート間を千鳥状に接合して被加工体を形成し、
上記フェースシートの外側にダミーシートを重ね合わせ
た後、被加工体の外側に金型を配設し被加工体のシート
間に流体圧を加えてダミーシートとともに被加工体を成
形し、成形完了後に上記金型とダミーシートを除去する
ことを特徴としている。According to a method of manufacturing a sandwich panel of the present invention, a core sheet is arranged between face sheets and the sheets are joined in a staggered manner to form a workpiece.
After stacking a dummy sheet on the outside of the face sheet, place a mold on the outside of the workpiece and apply fluid pressure between the sheets of the workpiece to mold the dummy sheet and the workpiece, and complete the molding The feature is that the mold and the dummy sheet are removed later.
【００１２】[0012]
【作用】上記において、シート間に流体圧を加えて行う
被加工体の成形時には、ダミーシートをフェースシート
の外側に重ね合わせているために、流体圧に対する変形
抵抗増大効果は従来の方法のようにフェースシート自身
ではなく、ダミーシートが発揮する。In the above, when the workpiece is formed by applying the fluid pressure between the sheets, the dummy sheet is superposed on the outside of the face sheet, so that the effect of increasing the deformation resistance against the fluid pressure is the same as in the conventional method. The dummy sheet is effective instead of the face sheet itself.
【００１３】そのため、フェースシートは張出し変形が
少なくなり、充分に小さな曲率が維持され、成形終了時
にもフェースシートの肉余りは発生しない。Therefore, the face sheet is less likely to be overhanging and deformed, and a sufficiently small curvature is maintained, so that the face sheet does not have a surplus even at the end of molding.
【００１４】上記により、型構造、装置が単純で安価で
あり、成形後のフェースシートの板厚加工が不要であ
り、更にフェースシート、コアシートの材質、組織、板
厚の組合せに対する制約がなく、パネルの設計自由度が
大幅に改善され、見栄えだけでなく構造体性能の向上に
有効である平滑な外表面を有する金属サンドイッチパネ
ルの製作方法を実現する。From the above, the mold structure and the apparatus are simple and inexpensive, the thickness processing of the face sheet after molding is unnecessary, and there is no restriction on the combination of the material, the structure and the thickness of the face sheet and the core sheet. (EN) A method for manufacturing a metal sandwich panel having a smooth outer surface, which is significantly improved in design freedom of the panel and is effective not only for appearance but also for improving structure performance.
【００１５】[0015]
【実施例】本発明の一実施例を図１（ａ），（ｂ），
（ｃ）により説明する。図１（ａ），（ｂ），（ｃ）に
示す本実施例は、コアシート１及びフェースシート２が
ともに板厚１．０ｍｍのＴｉ−６Ａｌ−４Ｖ合金よりな
り、コアシート１の両面にフェースシート２が設けられ
て形成される３シート型サンドイッチパネルを製作する
場合であり、上記コアシート１の両面にフェースシート
２を配設しコアシート１とフェースシート２の間の所定
の接合部５を接合して被加工体６を形成し、図１（ａ）
に示すように同被加工体６の両面に板厚２．０ｍｍのＴ
ｉ−６Ａｌ−４Ｖ合金よりなるダミーシート４を重ね合
せた後、図１（ｂ）右側に示すように上下に上型７と下
型８を配設してコアシート１とフェースシート２の間を
ガス圧Ｐにより加圧し、ダミーシート４を上型７と下型
８に密着させた後、上型７、下型８及びダミーシート４
を除去し、図１（ｃ）に示す超塑性成形されたパネルを
得る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
This will be described with reference to (c). In the present embodiment shown in FIGS. 1A, 1B, and 1C, both the core sheet 1 and the face sheet 2 are made of Ti-6Al-4V alloy having a plate thickness of 1.0 mm, and both sides of the core sheet 1 are formed. This is a case of manufacturing a three-sheet type sandwich panel formed by providing the face sheet 2, in which the face sheets 2 are arranged on both surfaces of the core sheet 1 and a predetermined joint portion between the core sheet 1 and the face sheet 2 is provided. 5 is joined to form a workpiece 6, and FIG.
As shown in FIG.
After stacking the dummy sheets 4 made of i-6Al-4V alloy, the upper die 7 and the lower die 8 are arranged vertically as shown on the right side of FIG. Is pressed by the gas pressure P to bring the dummy sheet 4 into close contact with the upper die 7 and the lower die 8, and then the upper die 7, the lower die 8 and the dummy sheet 4
Is removed to obtain the superplastically molded panel shown in FIG. 1 (c).
【００１６】なお、図３（ｂ）は、超塑性成形中のフェ
ースシート２、コアシート１の形状をダミーシート４の
有る場合と無い場合について比較可能とするため、それ
ぞれ右側と左側に示している。In FIG. 3B, the shapes of the face sheet 2 and the core sheet 1 during superplastic forming are shown on the right side and the left side, respectively, in order to make it possible to compare the shapes with and without the dummy sheet 4. There is.
【００１７】上記において、フェースシート２とコアシ
ート１の接合部５を直径１０ｍｍ、ピッチ５６ｍｍとす
ると、コアシート２をε＝２×１０-4 sec-1程度のひず
み速度で成形するのに要するガス圧ＰはＰ≒０．０１kg
f/mm2 程度である。In the above, when the joint portion 5 between the face sheet 2 and the core sheet 1 has a diameter of 10 mm and a pitch of 56 mm, it is necessary to mold the core sheet 2 at a strain rate of about ε = 2 × 10 -4 sec -1. Gas pressure P is P ≒ 0.01kg
It is about f / mm 2 .
【００１８】この成形圧力によって生ずる、フェースシ
ート２とコアシート１の接合部５の間におけるフェース
シート２のたわみ量は、ダミーシート４を積層していな
い場合は約２．７ｍｍ、ダミーシート４を積層している
場合は約０．９ｍｍであり、フェースシート２の伸びに
換算すると、前者は約１％、後者は約０．１％となる。The amount of deflection of the face sheet 2 between the joint portion 5 of the face sheet 2 and the core sheet 1 caused by this molding pressure is about 2.7 mm when the dummy sheets 4 are not laminated. When laminated, it is about 0.9 mm, and when converted to the elongation of the face sheet 2, the former is about 1% and the latter is about 0.1%.
【００１９】ダミーシート４を積層した場合には、この
ように超塑性成形中にフェースシート２はほとんど変形
しないため、成形終了時にも図３（ｃ）に示すようにパ
ネル表面の肉余りによるしわや凹みが発生することな
く、平滑な表面の金属サンドイッチパネルが製作され
る。When the dummy sheets 4 are laminated, since the face sheet 2 is hardly deformed during superplastic forming as described above, wrinkles due to excess creases on the panel surface as shown in FIG. A metal sandwich panel with a smooth surface is produced without any dents.
【００２０】本実施例においては、フェースシート２、
コアシート１、ダミーシート４ともにその材質をＴｉ−
６Ａｌ−４Ｖ合金とし、板厚はフェースシート２、コア
シート１を１ｍｍ、ダミーシート４を２ｍｍとしたが、
材質及び板厚は任意に選択することが可能であり、たと
えばダミーシート４としてＴｉ−６Ａｌ−４Ｖ合金の超
塑性成形温度にて更に硬質のＴｉ−６Ａｌ−２Ｓｎ−４
Ｚｒ−２Ｍｏ合金を用いれば、板厚を薄くすることも可
能である。In this embodiment, the face sheet 2,
The material of both the core sheet 1 and the dummy sheet 4 is Ti-
6Al-4V alloy was used, the face sheet 2 and the core sheet 1 had a thickness of 1 mm, and the dummy sheet 4 had a thickness of 2 mm.
The material and the plate thickness can be arbitrarily selected. For example, as the dummy sheet 4, Ti-6Al-2Sn-4 which is harder at the superplastic forming temperature of Ti-6Al-4V alloy is used.
If a Zr-2Mo alloy is used, it is possible to reduce the plate thickness.
【００２１】上記については、前記の従来の方法による
しわや凹みの発生が、フェースシート自身に変形抵抗増
大の効果を持たせているために生じているものであるこ
とから、本実施例では、フェースシート２の変形抵抗増
大効果をフェースシート２自身ではなく、フェースシー
ト２に重ね合せたダミーシート４に持たせることを考え
た。With respect to the above, since wrinkles and dents are generated by the above-mentioned conventional method because the face sheet itself has the effect of increasing the deformation resistance, in the present embodiment, It is considered that the effect of increasing the deformation resistance of the face sheet 2 is provided not to the face sheet 2 itself but to the dummy sheet 4 superposed on the face sheet 2.
【００２２】すなわち、被加工体（フェースシート２、
１枚以上のコアシート１、フェースシート２の積層体）
６の両面もしくは片面に、肉厚あるいは硬質のダミーシ
ート４を重ね合わせて被加工体６と一緒に超塑性成形す
ることにより、ダミーシート４がフェースシート２の張
出し変形を少くし、充分に小さな曲率を維持するように
作用する。That is, the workpiece (face sheet 2,
A laminated body of one or more core sheets 1 and face sheets 2)
By superposing a thick or hard dummy sheet 4 on both sides or one side of 6 and performing superplastic forming together with the workpiece 6, the dummy sheet 4 reduces the overhang deformation of the face sheet 2 and is sufficiently small. It acts to maintain the curvature.
【００２３】そのため、成形終了時にもフェースシート
２の肉余りは発生せず、平滑でしわや凹みの無い外表面
を有する金属サンドイッチパネルが形成されるものであ
る。Therefore, even if the molding is completed, the face sheet 2 does not have a surplus, and a metal sandwich panel having a smooth outer surface without wrinkles or dents is formed.
【００２４】上記により、型構造、装置が単純で安価で
あり、成形後のフェースシートの板厚加工が不要であ
り、更にフェースシート、コアシートの材質、組織、板
厚の組合せに対する制約がなく、パネルの設計自由度が
大幅に改善され、超塑性成形時のフェースシートの変形
を防止し外観的な見栄えを良くするだけでなく、面外曲
げ剛性等の構造体性能の向上に有効である平滑な外表面
を有する金属サンドイッチパネルの製作が可能となっ
た。From the above, the mold structure and the apparatus are simple and inexpensive, the thickness processing of the face sheet after molding is unnecessary, and there is no restriction on the combination of the material, the structure and the thickness of the face sheet and the core sheet. The design freedom of the panel is greatly improved, and it is effective not only for preventing the deformation of the face sheet during superplastic forming to improve the appearance but also for improving the structural performance such as out-of-plane bending rigidity. It has become possible to manufacture metal sandwich panels with smooth outer surfaces.
【００２５】[0025]
【発明の効果】本発明のサンドイッチパネルの製作方法
は、フェースシートの間にコアシートが配設されシート
間が千鳥状に接合されて形成された被加工体の成形時
に、フェースシートの外側にダミーシートを重ね合わせ
て被加工体のシート間に流体圧を加え、被加工体を成形
することによって、ダミーシートが変形抵抗増大効果を
発揮するため、型構造、装置が単純で安価であり、成形
後のフェースシートの板厚加工が不要であり、パネルの
設計自由度が大きく、美観上及び性能上有効である平滑
な外表面を有する金属サンドイッチパネルの製作方法を
実現する。According to the method of manufacturing a sandwich panel of the present invention, a core sheet is disposed between face sheets and the sheets are joined to each other in a zigzag manner. By stacking dummy sheets and applying fluid pressure between the sheets of the workpiece to form the workpiece, the dummy sheet exerts the effect of increasing the deformation resistance, so the mold structure and the device are simple and inexpensive, (EN) A method for manufacturing a metal sandwich panel having a smooth outer surface, which does not require plate thickness processing of a face sheet after molding, has a large degree of freedom in panel design, and is aesthetically and performance-effective.
【図１】本発明の一実施例の説明図で、（ａ）ダミーシ
ートが設けられた被加工体の断面図、（ｂ）成形時につ
いての従来の方法との比較図、（ｃ）成形完了時の斜視
図である。FIG. 1 is an explanatory view of an embodiment of the present invention, (a) a cross-sectional view of a work piece provided with a dummy sheet, (b) a comparison diagram with a conventional method at the time of molding, (c) molding It is a perspective view at the time of completion.
【図２】従来の方法の説明図で、（ａ）は成形時の断面
図、（ｂ）は成形完了後の斜視図である。FIG. 2 is an explanatory view of a conventional method, (a) is a cross-sectional view at the time of molding, and (b) is a perspective view after completion of molding.
【図３】従来の方法に係る金型スライド方式の説明図で
ある。FIG. 3 is an explanatory diagram of a mold slide system according to a conventional method.
１ コアシート ２ フェースシート ４ ダミーシート ５ 接合部 ６ 被加工体 ７，８ 金型 1 Core Sheet 2 Face Sheet 4 Dummy Sheet 5 Joined Part 6 Workpiece 7, 8 Mold
Claims (1)
しシート間を千鳥状に接合して被加工体を形成し、上記
フェースシートの外側にダミーシートを重ね合わせた
後、被加工体の外側に金型を配設し被加工体のシート間
に流体圧を加えてダミーシートとともに被加工体を成形
し、成形完了後に上記金型とダミーシートを除去するこ
とを特徴とするサンドイッチパネルの製作方法。1. A core sheet is provided between face sheets, the sheets are joined in a staggered manner to form a workpiece, and a dummy sheet is superposed on the outside of the face sheet. A sandwich panel characterized by arranging a mold on the outside and applying a fluid pressure between the sheets of the workpiece to mold the workpiece with the dummy sheet, and removing the die and the dummy sheet after the molding is completed. Production method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4002897A JPH05185169A (en) | 1992-01-10 | 1992-01-10 | Production of sandwich panel |
| GB9226451A GB2263081B (en) | 1992-01-10 | 1992-12-18 | Method for making metallic sandwich panels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4002897A JPH05185169A (en) | 1992-01-10 | 1992-01-10 | Production of sandwich panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05185169A true JPH05185169A (en) | 1993-07-27 |
Family
ID=11542149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4002897A Withdrawn JPH05185169A (en) | 1992-01-10 | 1992-01-10 | Production of sandwich panel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH05185169A (en) |
| GB (1) | GB2263081B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002018532A (en) * | 2000-07-03 | 2002-01-22 | Fuji Heavy Ind Ltd | Integral molding method for superplastic materials |
| US10821541B2 (en) * | 2017-08-22 | 2020-11-03 | Bae Systems Plc | Superplastic forming and diffusion bonding process |
| US10850317B2 (en) | 2017-08-22 | 2020-12-01 | Bae Systems Plc | Superplastic forming and diffusion bonding process |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2284569A (en) * | 1993-12-08 | 1995-06-14 | Rolls Royce Plc | Manufacture of similarly shaped components |
| EP0962268A1 (en) * | 1998-06-02 | 1999-12-08 | Solistor B.V. | A method for manufacturing a storage vessel for storing a medium, as well as a storage vessel manufactured in accordance with this method |
| US8707747B1 (en) * | 2012-12-14 | 2014-04-29 | Rohr, Inc. | Forming a shaped sandwich panel with a die and a pressure vessel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4217397A (en) * | 1978-04-18 | 1980-08-12 | Mcdonnell Douglas Corporation | Metallic sandwich structure and method of fabrication |
| US4304821A (en) * | 1978-04-18 | 1981-12-08 | Mcdonnell Douglas Corporation | Method of fabricating metallic sandwich structure |
| US4406393A (en) * | 1981-03-23 | 1983-09-27 | Rockwell International Corporation | Method of making filamentary reinforced metallic structures |
| GB9005191D0 (en) * | 1990-03-08 | 1990-05-02 | British Aerospace | Explosive bonding |
| GB9103804D0 (en) * | 1991-02-23 | 1991-04-10 | British Aerospace | Improvements relating to diffusion bonded/superplastically formed cellular structures |
-
1992
- 1992-01-10 JP JP4002897A patent/JPH05185169A/en not_active Withdrawn
- 1992-12-18 GB GB9226451A patent/GB2263081B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002018532A (en) * | 2000-07-03 | 2002-01-22 | Fuji Heavy Ind Ltd | Integral molding method for superplastic materials |
| US10821541B2 (en) * | 2017-08-22 | 2020-11-03 | Bae Systems Plc | Superplastic forming and diffusion bonding process |
| US10850317B2 (en) | 2017-08-22 | 2020-12-01 | Bae Systems Plc | Superplastic forming and diffusion bonding process |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2263081A (en) | 1993-07-14 |
| GB2263081B (en) | 1995-02-15 |
| GB9226451D0 (en) | 1993-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990408 |