JP2629551B2 - Composite mold for superplastic forming and superplastic forming method - Google Patents
Composite mold for superplastic forming and superplastic forming methodInfo
- Publication number
- JP2629551B2 JP2629551B2 JP5050027A JP5002793A JP2629551B2 JP 2629551 B2 JP2629551 B2 JP 2629551B2 JP 5050027 A JP5050027 A JP 5050027A JP 5002793 A JP5002793 A JP 5002793A JP 2629551 B2 JP2629551 B2 JP 2629551B2
- Authority
- JP
- Japan
- Prior art keywords
- superplastic forming
- mold
- superplastic
- die
- die box
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、超塑性成形するため
の複合型およびその複合型を用いた超塑性成形方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite mold for superplastic forming and a superplastic forming method using the composite mold.
【０００２】[0002]
【従来の技術】超塑性成形にあたって、目的の形状を得
るための成形型と、その成形型を収納し、シールおよび
補強するための容器（以下、ダイボックスと称する）を
組合せてなる超塑性成形用複合型を用いることがあるこ
とは知られている。この超塑性成形用複合型は、大きさ
又は形状の異なった成形型と１個のダイボックスを用意
し、成形型を交換して超塑性成形を行なうことにより、
形状の異なった超塑性成形品を得ることができる。2. Description of the Related Art In superplastic forming, superplastic forming is performed by combining a forming die for obtaining a desired shape and a container (hereinafter, referred to as a die box) for accommodating the forming die, sealing and reinforcing. It is known that a composite type for use may be used. This composite mold for superplastic forming is prepared by preparing a forming die having a different size or shape and one die box, replacing the forming die and performing superplastic forming.
Superplastic molded articles having different shapes can be obtained.
【０００３】上記成形型とダイボックスは、共に耐熱鋳
鋼で作製されることもあるが、成形型をセラミックスで
作製し、ダイボックスを耐熱鋳鋼で作製される場合もあ
る。セラミックス製成形型は、耐熱鋳鋼製成形型よりも
微細な模様まで精密に成形できるという理由によるもの
である。The above-mentioned mold and die box may both be made of heat-resistant cast steel, but there are also cases where the mold is made of ceramic and the die box is made of heat-resistant cast steel. The reason for this is that the ceramic mold can form a finer pattern more precisely than the heat-resistant cast steel mold.
【０００４】[0004]
【発明が解決しようとする課題】上記超塑性成形用複合
型を用いて超塑性成形する際に、成形型とダイボックス
の間に隙間があると、その隙間に超塑性材料板が入り込
み、超塑性材料板が破れることがある。In the superplastic forming using the superplastic forming composite mold, if there is a gap between the mold and the die box, the superplastic material plate enters the gap, and The sheet of plastic material may be torn.
【０００５】そのため、成形型とダイボックスの間には
可能な限り隙間をなくすようにセットしたのち超塑性成
形を行なっているが、成形型とダイボックスが分離でき
るようになっている以上、成形型をダイボックスに容易
に挿入できる程度の隙間を設けることは必要であり、さ
らに、成形型とダイボックスの間に隙間が無いようにセ
ットできたとしても、例えばセラミックス製成形型と鋳
鋼製ダイボックスからなる超塑性成形用複合型のような
両者の材質が異なった超塑性成形用複合型を用いて超塑
性成形すると、材質の熱膨張係数が異なるために、常温
では隙間なく組み合せることができても高温において隙
間が生ずることは避けられず、特に大型の超塑性成形用
複合型の場合にかかる現象が顕著に現われ、超塑性成形
上問題となっていた。[0005] For this reason, superplastic forming is performed after setting the gap between the mold and the die box as much as possible, but since the mold and the die box can be separated, It is necessary to provide a gap that allows the mold to be easily inserted into the die box, and even if the mold can be set so that there is no gap between it and the die box, for example, a ceramic mold and a cast steel die When superplastic forming is performed using a superplastic forming composite mold in which both materials are different, such as a superplastic forming composite mold consisting of a box, the materials have different coefficients of thermal expansion. Even if it is possible, gaps are unavoidable at high temperatures, and the phenomenon especially in the case of large superplastic forming composite molds is prominent, which is a problem in superplastic forming. .
【０００６】[0006]
【課題を解決するための手段】そこで、本発明者等は、
かかる超塑性成形上の問題を解決すべく研究を行った結
果、成形型とダイボックスの隙間にセラミックス製粒状
物または／および粉体を充填し介在させると、成形型と
ダイボックスの隙間は埋められて無くなり、また充填さ
れたセラミックス製粒状物または／および粉体は成形型
とダイボックスの熱膨張係数の違いによって生ずる隙間
を調整する機能も有するという研究結果が得られたので
ある。Means for Solving the Problems Accordingly, the present inventors have
As a result of conducting research to solve such a problem on superplastic forming, if a gap between the mold and the die box is filled with ceramic granules and / or powder and interposed, the gap between the mold and the die box is filled. Research results have shown that the ceramic granules and / or powder filled and lost also have the function of adjusting the gap caused by the difference in the thermal expansion coefficient between the mold and the die box.
【０００７】この発明は、かかる研究結果にもとづいて
なされたものであって、ダイボックスと成形型の間に、
セラミックス製粒状物または／および粉体を充填してな
る超塑性成形用複合型に特徴を有するものである。[0007] The present invention has been made based on the results of such research, and comprises the following steps:
The present invention is characterized by a superplastic forming composite mold filled with ceramic granules and / or powder.
【０００８】上記セラミックス製粒状物または／および
粉体の大きさは特に限定されるものではないが、超塑性
材料板と接する部分にあまり細かいものを用いると、超
塑性成形後、超塑性材料板にくい込んで剥離させること
が困難となるため、直径：５〜１０mm程度とすることが
好ましい。成形型とダイボックスの隙間に充填したセラ
ミックス製粒状物または／および粉末は、高温時および
超塑性成形時に超塑性材料板と接する面が低下すること
があるが、超塑性成形にはほとんど問題がない。後工程
等でそれが問題となる場合は、超塑性成形温度に達した
後にその低下した分だけセラミックス製粒状物または／
および粉末を補充することで解決することができる。[0008] The size of the ceramic granules and / or powder is not particularly limited. However, if a very fine material is used in a portion in contact with the superplastic material plate, the superplastic material plate may be formed after superplastic forming. The diameter is preferably about 5 to 10 mm because it is difficult to peel off the film. In the case of ceramic granules and / or powder filled in the gap between the forming die and the die box, the surface in contact with the superplastic material plate at high temperatures and during superplastic forming may decrease, but there are almost no problems with superplastic forming. Absent. If it becomes a problem in the post-process, etc., the ceramic granules or /
And replenishing the powder can solve the problem.
【０００９】図１は、この発明の超塑性成形用複合型の
断面図であり、図１において、１は天板、２はダイボッ
クス、３は成形型、４はセラミックス製粒状物、５は超
塑性材料板、６は供給孔である。この発明の超塑性成形
用複合型を用いて超塑性成形するには、ダイボックス２
の中に成形型３を装入設置し、ダイボックス２および成
形型３を超塑性成形温度に加熱し、ついでダイボックス
２と成形型３の隙間にセラミックス製粒状物４を充填す
る。ダイボックス２および成形型３を加熱する前にセラ
ミックス製粒状物４を充填してもよいが、セラミックス
製粒状物４が微細であるとセラミックス製粒状物４が焼
結付着してダイボックス２と成形型３が一体化し、分離
できなくなってダイボックス２が再利用できなくなるこ
とがある。したがってセラミックス製粒状物４は加熱中
に焼結することがないようにダイボックス２および成形
型３を加熱した後で充填する方が好ましい。FIG. 1 is a cross-sectional view of a composite mold for superplastic forming according to the present invention. In FIG. 1, 1 is a top plate, 2 is a die box, 3 is a forming die, 4 is a ceramic granule, and 5 is The superplastic material plate 6 is a supply hole. In order to perform superplastic forming using the composite mold for superplastic forming of the present invention, a die box 2 is used.
The die 3 and the die 3 are heated to a superplastic forming temperature, and the gap between the die box 2 and the die 3 is filled with the ceramic granules 4. Before heating the die box 2 and the mold 3, the ceramic granules 4 may be filled. However, if the ceramic granules 4 are fine, the ceramic granules 4 are sintered and adhered to the die box 2. There is a case where the mold 3 is integrated, cannot be separated, and the die box 2 cannot be reused. Therefore, it is preferable to fill the ceramic granules 4 after heating the die box 2 and the mold 3 so as not to sinter during heating.
【００１０】セラミックス製粒状物４を充填したのち、
超塑性材料板５をダイボックス２の上に載置し、その上
に天板１を乗せ、成形用ガスを供給孔６から供給し、超
塑性成形を行なう。After filling the ceramic granules 4,
The superplastic material plate 5 is placed on the die box 2, the top plate 1 is placed thereon, and a forming gas is supplied from the supply holes 6 to perform superplastic forming.
【００１１】[0011]
【実施例】実施例１ 超塑性材料板として、重量％で２５％Ｃｒ−６％Ｎｉ−
３％Ｍｏ−Ｆｅの成分組成を有し、板厚が０．５mmの２
相ステンレス鋼板を用意し、さらに微量のアルミナを含
むシリカセラミックス（熱膨張係数：１．８×１０-6／
℃）製成形型およびＳＵＳ３１０相当の耐熱鋼（熱膨張
係数：１６×１０-6／℃）製ダイボックスを用意した。EXAMPLE 1 25% Cr-6% Ni-% by weight as a superplastic material plate.
2% having a component composition of 3% Mo—Fe and a plate thickness of 0.5 mm
A duplex stainless steel sheet is prepared, and a silica ceramic containing a small amount of alumina (coefficient of thermal expansion: 1.8 × 10 −6 /
C.) and a die box made of heat-resistant steel equivalent to SUS310 (coefficient of thermal expansion: 16 × 10 −6 / ° C.).
【００１２】一方、セラミックス製粒状物として、直
径：２mmのセラミックス球、直径：５mmのセラミックス
球、および直径：１０mmのセラミックス球をそれぞれ用
意し、これらセラミックス製粒状物を超塑性材料板と接
する部分には直径：５mmと直径：１０mmのセラミックス
球を混合して配置し、 温度：９８０℃、 ガス：Ａｒ、 ガス圧力：１８kg／cm2 、 の超塑性成形条件で超塑性成形を行った。On the other hand, ceramic spheres having a diameter of 2 mm, ceramic spheres having a diameter of 5 mm, and ceramic spheres having a diameter of 10 mm are prepared as ceramic granules, and these ceramic granules are brought into contact with a superplastic material plate. Were mixed with ceramic spheres having a diameter of 5 mm and a diameter of 10 mm, and superplastic forming was performed under superplastic forming conditions of temperature: 980 ° C., gas: Ar, gas pressure: 18 kg / cm 2 .
【００１３】その結果、超塑性材料板が成形型とダイボ
ックスの間の隙間に流れ込んで破れることがなくなっ
た。As a result, the superplastic material plate does not flow into the gap between the forming die and the die box and is not broken.
【００１４】実施例２ 超塑性材料板として、６％Ａｌ−４％Ｖ−Ｔｉの成分組
成を有し、板厚が１．６mmのＴｉ合金板を用意し、さら
に微量のアルミナを含むシリカセラミックス（熱膨張係
数：１．８×１０-6／℃）製成形型およびＨＫ−２０相
当の耐熱鋳鋼（熱膨張係数：１８×１０-6／℃）製ダイ
ボックスを用意した。Example 2 As a superplastic material plate, a Ti alloy plate having a composition of 6% Al-4% V-Ti and a thickness of 1.6 mm is prepared, and further, a silica ceramic containing a small amount of alumina A mold made of (thermal expansion coefficient: 1.8 × 10 −6 / ° C.) and a die box made of heat-resistant cast steel (thermal expansion coefficient: 18 × 10 −6 / ° C.) equivalent to HK-20 were prepared.
【００１５】一方、セラミックス製粒状物として、実施
例１で用意した直径：５mmのセラミックス球および直
径：１０mmのセラミックス球を使用し、超塑性材料板と
接する部分には直径：１０mmのセラミックス球を配置
し、 温度：９００℃、 ガス：Ａｒ、 ガス圧力：１０kg／cm2 、 の超塑性成形条件で超塑性成形を行ったところ、超塑性
材料板が成形型とダイボックスの間の隙間に流れ込んで
破れることがなかった。On the other hand, the ceramic spheres having a diameter of 5 mm and the ceramic spheres having a diameter of 10 mm prepared in Example 1 were used as the ceramic granules, and the ceramic spheres having a diameter of 10 mm were used at the portions in contact with the superplastic material plate. When superplastic forming was performed under the superplastic forming conditions of temperature: 900 ° C., gas: Ar, gas pressure: 10 kg / cm 2 , the superplastic material plate flowed into the gap between the forming die and the die box. Did not break.
【００１６】[0016]
【発明の効果】この発明の超塑性成形用複合型を用いる
と、ダイボックスとダイボックスの開口部よりも小さな
各種形状および大きさを有する成形型を組合せて用いて
も、ダイボックスと成形型の間の隙間がセラミックス製
粒状物または／および粉体で埋められているので、従来
のように超塑性材料板が上記隙間に入り込んで破れるこ
とがなく、またダイボックスと成形型の熱膨張係数の差
により生ずる隙間についての注意を払う必要もないとこ
ろから、超塑性成形作業が簡単かつ迅速に行なうことが
できるなど優れた効果を奏するものである。According to the composite mold for superplastic forming of the present invention, the die box and the mold having various shapes and sizes smaller than the opening of the die box can be used in combination with the die box and the mold. Is filled with ceramic granules and / or powder, so that the superplastic material plate does not break into the gap as in the prior art, and the thermal expansion coefficient of the die box and the molding die Since there is no need to pay attention to the gap generated due to the difference between the two, the superplastic forming operation can be performed easily and quickly, resulting in an excellent effect.
【図１】この発明の超塑性成形用複合型の断面図であ
る。FIG. 1 is a sectional view of a composite mold for superplastic forming according to the present invention.
１ 天板 ２ ダイボックス ３ 成形型 ４ セラミックス製粒状物 ５ 超塑性材料板 ６ 供給孔 DESCRIPTION OF SYMBOLS 1 Top plate 2 Die box 3 Mold 4 Ceramic granules 5 Superplastic material plate 6 Supply hole
Claims (3)
クス製粒状物または／および粉体を充填してなることを
特徴とする超塑性成形用複合型。A ceramic is provided between a die box and a mold.
A composite mold for superplastic forming, characterized by being filled with granules and / or powder.
セラミックス製であることを特徴とする請求項１記載の
超塑性成形用複合型。2. The superplastic forming composite die according to claim 1, wherein the die box is made of metal and the forming die is made of ceramics.
に加熱したのち、セラミックス製粒状物または／および
粉体をダイボックスと成形型の間に充填し、ついで超塑
性成形を行なうことを特徴とする超塑性成形方法。3. The method according to claim 1, wherein the die box and the mold are heated to a superplastic forming temperature, and then a ceramic granule or powder is filled between the die box and the mold, followed by superplastic forming. Superplastic forming method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5050027A JP2629551B2 (en) | 1993-02-16 | 1993-02-16 | Composite mold for superplastic forming and superplastic forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5050027A JP2629551B2 (en) | 1993-02-16 | 1993-02-16 | Composite mold for superplastic forming and superplastic forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06238355A JPH06238355A (en) | 1994-08-30 |
| JP2629551B2 true JP2629551B2 (en) | 1997-07-09 |
Family
ID=12847524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5050027A Expired - Lifetime JP2629551B2 (en) | 1993-02-16 | 1993-02-16 | Composite mold for superplastic forming and superplastic forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2629551B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008093728A (en) * | 2006-10-16 | 2008-04-24 | Honda Motor Co Ltd | Die for blow molding |
| JP4845813B2 (en) * | 2007-06-01 | 2011-12-28 | アイシン高丘株式会社 | Press working equipment in die quench method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177266A (en) * | 1992-01-09 | 1993-07-20 | Janome Sewing Mach Co Ltd | Method and device for molding super plastic alloy sheet |
-
1993
- 1993-02-16 JP JP5050027A patent/JP2629551B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06238355A (en) | 1994-08-30 |
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