JPH0433856A - Manufacture of laminated metal molded form - Google Patents
Manufacture of laminated metal molded formInfo
- Publication number
- JPH0433856A JPH0433856A JP2138596A JP13859690A JPH0433856A JP H0433856 A JPH0433856 A JP H0433856A JP 2138596 A JP2138596 A JP 2138596A JP 13859690 A JP13859690 A JP 13859690A JP H0433856 A JPH0433856 A JP H0433856A
- Authority
- JP
- Japan
- Prior art keywords
- superplastic
- molding
- pack
- foil
- laminated
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000011888 foil Substances 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000000470 constituent Substances 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 8
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000005219 brazing Methods 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 239000002313 adhesive film Substances 0.000 abstract description 2
- 229910000883 Ti6Al4V Inorganic materials 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は積層金属成形体の製造法に関し、特に航空機な
ど耐疲労性が要求される輸送機器につき、損傷許容性に
優れた金属成形構造体の製造法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing laminated metal molded bodies, and in particular to a metal molded structure with excellent damage tolerance for transportation equipment such as aircraft that requires fatigue resistance. This relates to a manufacturing method.
高強度の板材を軟質材の薄層を介在させて接合させる積
層体は、き裂の停止効果、即ち損傷許容性に優れる特長
があり、これまでアルミニウム合金板の接着による積層
体（ＡＲＡＬＬ ： Ａｒａ＋ｎ＋ｄＡｌｕｍｉｎｕｍ
Ｌａｍ１ｎａｔｅ）やチタン合金のろう付積層体が検
討されてきた。しかし、これら積層体は延性に乏しいこ
とから、複雑高加工度成形部品への適用は不可能であっ
た。A laminate made by bonding high-strength plates with a thin layer of soft material interposed therebetween has the advantage of excellent crack stopping effect, that is, excellent damage tolerance.
brazed laminates of titanium alloys and titanium alloys have been studied. However, since these laminates have poor ductility, it has been impossible to apply them to complex, highly processed molded parts.
これまで検討・試作されている積層体は、下記の如き問
題点を有していることから、加工度の低い平板状部品に
限定されている。Laminated bodies that have been studied and prototyped so far have the following problems, and are therefore limited to flat plate-like parts that require low processing.
（１） アルミニウム合金板の接着積層体；“ＡＲＡ
ＬＬ”で知られる積層体は、第４図のように接着剤を含
浸した一方面アラミド繊維を交互に積層している。この
繊維は強度は高いが延性に乏しく、繊維方向伸びは１％
程度しかなく、従ってこの方向の塑性加工は不可能であ
る。繊維直交方向では約９％の伸びがあるので、その方
向への曲げ加工は可能であることから、一方向の直線曲
げ部品には適用可能であるが、方向性が任意の一直文部
品には適用不可能である。(1) Adhesive laminate of aluminum alloy plates; “ARA
The laminate known as "LL" is made by alternately laminating single-sided aramid fibers impregnated with adhesive, as shown in Figure 4. These fibers have high strength but poor ductility, with an elongation in the fiber direction of 1%.
Therefore, plastic working in this direction is not possible. Since there is an elongation of approximately 9% in the direction perpendicular to the fibers, bending in that direction is possible, so it is applicable to linearly bent parts in one direction, but it cannot be applied to linearly bent parts with arbitrary directionality. Not applicable.
（２） チタン合金積層体；
実例はほとんどないが、その主たる理由はチタン合金は
延性が低い（最も代表的なＴｉ−６ＡＩ−４Ｖ合金では
伸びは約９％）ため複雑部品の成形が困難で、かつスプ
リングバック大のだと積層に必要な部材精度確保が困難
な点にあった。(2) Titanium alloy laminates: There are almost no actual examples, but the main reason is that titanium alloys have low ductility (the most typical Ti-6AI-4V alloy has an elongation of about 9%), making it difficult to form complex parts. , and if the springback is large, it is difficult to ensure the precision of the parts required for lamination.
本発明は積層金属成形体を製造するにあたり、■成形体
の構成金属材料を超塑性材とし、■該構成金属材料と箔
材とを交互に積層してカバーシートに包んで密封パック
状となし、■該パックを超塑性加工して所望の形状に成
形し、■成形後パックより成形された構成金属材料を取
出して箔材を取除き、その後に接合材を挿入して構成金
属材料を接合することを特徴とする積層金属成形体の製
造法である。In producing a laminated metal molded body, the present invention involves: (1) using a superplastic material as the constituent metal material of the molded body, and (2) alternately laminating the constituent metal material and a foil material and wrapping them in a cover sheet to form a sealed pack. , ■ superplastically process the pack to form it into a desired shape, and ■ take out the molded constituent metal materials from the pack and remove the foil material, and then insert a bonding material to join the constituent metal materials. This is a method for producing a laminated metal molded body, which is characterized by:
すなわち、本発明は積層すべき金属部材をあらかじめ超
塑性成形によって製造し、かつ接合＠（接着剤）、ろう
材など）の均一化のため、当該超塑性金属薄板（製品と
して使用するもの）と金属箔材（接着剤・ろう材層に相
当する間隙生成用）とを交互にはさんで積層体パックを
、同時に超塑性成形するようにした。That is, in the present invention, the metal members to be laminated are manufactured in advance by superplastic forming, and the superplastic thin metal sheets (to be used as a product) and The laminate pack was simultaneously superplastically formed by sandwiching metal foil materials (for creating gaps corresponding to the adhesive/brazing material layer) alternately.
超塑性成形の利用は、顕著な成形性向上によって複雑高
加工度部品の一体成形を可能にするもので、最近の超塑
性材料の進歩に伴って、アルミニウム合金（７４７５高
力アルミニウム合金など）チタン合金（Ｔｉ−６ＡＩ−
４Ｖなど）ともに製造可能となっている。The use of superplastic forming enables the integral molding of complex, highly workable parts due to the remarkable improvement in formability. Alloy (Ti-6AI-
4V, etc.) can be manufactured.
本発明は特に多数枚の部材を同時に成形する点ならびに
その間に、あとで接合層となるべき間隙確保のだと箔材
をはさんで同時成形する点を新規とするものである。手
順としてはこの多層金属積層体を超塑性成形し、そのあ
とで箔材を取り除き、そこに接合材を入れて接合処理を
行う。The present invention is particularly novel in that a large number of members are molded at the same time, and that a foil material is sandwiched between them to provide a gap that will later become a bonding layer. The procedure is to superplastically form this multilayer metal laminate, then remove the foil material, put a bonding material there, and perform the bonding process.
３作 用〕
（１）超塑性材料（超塑性成形法）採用の作用複雑高加
工度の部品成形を可能にする作用がある。3 Effects] (1) Effects of using superplastic material (superplastic forming method) It has the effect of making it possible to form parts with complex and high processing rates.
（２）積層パック材の同時超塑性成形法の作用■ 構成
部材を一度に成形することによって、加工工数を低減さ
せる作用がある。(2) Effects of the simultaneous superplastic forming method for laminated pack materials■ By forming the constituent members at once, there is an effect of reducing the number of processing steps.
■ 構成部材間に介在させる箔材は、成形後の接合工程
において、所要の接合間隙を付与させる作用がある。(2) The foil material interposed between the constituent members has the effect of providing a required bonding gap in the bonding process after molding.
■ 最外層のカバーシート （捨材）は、その周囲をシ
ール溶接などを行い、内部の真空引き又は不活性ガス封
入を可能にし、構成部材の酸化防止を達成する作用があ
る。■ The outermost cover sheet (waste material) is sealed and welded around it, allowing the inside to be vacuumed or filled with inert gas, and has the effect of preventing oxidation of the constituent members.
（３）超塑性成形部材の多層積層体
複雑・高加工度成形体に、優れた損傷許容性を与える作
用がある。(3) A multilayer laminate of superplastic molded parts has the effect of imparting excellent damage tolerance to complex, highly processed molded bodies.
本発明の一実施例として球形タンク用多層積層鏡板の製
造例をあげて説明する。An example of manufacturing a multilayer laminated end plate for a spherical tank will be described as an embodiment of the present invention.
第１図は超塑性成形前の積層パックＡであり、製品とな
る構成部材１、接合層を提供する箔材２をカバーシート
３で包み、その周囲を溶接４して気密性を与えである。Figure 1 shows a laminated pack A before superplastic molding, in which the component 1 that will become the product and the foil material 2 that provides the bonding layer are wrapped with a cover sheet 3, and the periphery is welded 4 to provide airtightness. .
箔材２は、要求される接合層間隙に合せて選択する。The foil material 2 is selected according to the required bonding layer gap.
第２図は、その超塑性ガス成形性概念図に示したもので
、上記の積層パックＡをダイスＢ及び押え板Ｃ間で押え
込み、全体を超塑性温度＜７５７５アルミニウム合金の
場合は約５００’Ｃ，Ｔｉ−６ＡＩ−４Ｖ チ９ ン合
金の場合は約９００℃）に加熱した状態で、押え板Ｃ内
に設けられたガス通路にコントロールされた成形ガス圧
りを加えて超塑性成形を行う。このとき積層パックへの
内部は真空引きＥ又はその後不活性ガス導入などによっ
て部材の酸化防止を行うことができる。Fig. 2 shows a conceptual diagram of the superplastic gas formability, in which the above laminated pack A is pressed between a die B and a presser plate C, and the entire superplastic temperature is <7575. C, Ti-6AI-4V alloy is heated to approximately 900°C), and controlled forming gas pressure is applied to the gas passage provided in the holding plate C to perform superplastic forming. . At this time, oxidation of the members can be prevented by evacuation E or subsequent introduction of an inert gas into the inside of the stacked pack.
第３図は全体の加工工程を示すもので、前述の超塑性成
形後、積層パックを取り出し、必要部分を切り出す（ト
リム）とともに、箔材を除去する。箔材を除去したあと
には接着剤フィルム又はろう材シートなど所要の接合材
をセットし、最終的に所定の加熱・加圧条件下で接合処
理を行う。FIG. 3 shows the entire processing process. After the above-mentioned superplastic forming, the laminated pack is taken out, the necessary parts are cut out (trim), and the foil material is removed. After removing the foil material, a necessary bonding material such as an adhesive film or a brazing material sheet is set, and finally a bonding process is performed under predetermined heating and pressurizing conditions.
以上の実施例において、部品形状は第２図における超塑
性成形用金型を変えることによって、任意に変えること
ができ、超塑性の特長を活かして複雑・高加工度の成形
が可能である。In the above embodiments, the part shape can be changed arbitrarily by changing the superplastic molding die shown in FIG. 2, and complex and highly workable molding is possible by taking advantage of the characteristics of superplasticity.
（１）超塑性材料（超塑性成形法）の適用により、従来
法では不可能であった任意形状の成形部品についても、
多層積層体を拡大できた。(1) By applying superplastic materials (superplastic molding method), it is possible to mold parts with arbitrary shapes, which were impossible with conventional methods.
We were able to expand the multilayer laminate.
（２）超塑性成形に際し、構成部材と箔材との構成体を
同時成形することによって、加工工数の低減と接合層間
隙確保の両者が、同時に達成できた。(2) During superplastic molding, by simultaneously molding the structural member and the foil material, it was possible to simultaneously reduce the number of processing steps and secure the bonding layer gap.
（３）成形部材多層積層体は厚さの等しい単一金属部材
にくらべ、接合面でのき裂停止効果があり優れた損傷許
容性を有する。(3) Compared to a single metal member of equal thickness, a multilayer laminate of molded members has a crack arresting effect at the joint surface and has excellent damage tolerance.
第１図は本発明の一実施例の超塑性成形前の積層パック
の概略図、第２図は該積層パックの超塑性ガス圧成形法
の概念図、第３図は本発明の工程図、第４図は従来の積
層体の概念図である。FIG. 1 is a schematic diagram of a laminated pack before superplastic molding according to an embodiment of the present invention, FIG. 2 is a conceptual diagram of a superplastic gas pressure molding method for the laminated pack, and FIG. 3 is a process diagram of the present invention. FIG. 4 is a conceptual diagram of a conventional laminate.
Claims (1)
シートに包んで密封パック状となし、 （３）該パックを超塑性加工して所望の形状に成形し、 （４）成形後パックより成形された構成金属材料を取出
して箔材を取除き、その後に接合材を挿入して構成金属
材料を接合することを特徴とする積層金属成形体の製造
法。[Claims] In producing a laminated metal molded body, (1) the constituent metal material of the molded body is a superplastic material, and (2) the constituent metal material and foil material are alternately laminated to form a cover sheet. (3) Superplastically process the pack to form it into a desired shape; (4) After molding, take out the molded constituent metal materials from the pack and remove the foil material; A method for producing a laminated metal molded body, which comprises inserting a bonding material to bond constituent metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2138596A JPH0433856A (en) | 1990-05-30 | 1990-05-30 | Manufacture of laminated metal molded form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2138596A JPH0433856A (en) | 1990-05-30 | 1990-05-30 | Manufacture of laminated metal molded form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433856A true JPH0433856A (en) | 1992-02-05 |
Family
ID=15225791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2138596A Pending JPH0433856A (en) | 1990-05-30 | 1990-05-30 | Manufacture of laminated metal molded form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433856A (en) |
-
1990
- 1990-05-30 JP JP2138596A patent/JPH0433856A/en active Pending
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