JPH0224611B2 - - Google Patents
Info
- Publication number
- JPH0224611B2 JPH0224611B2 JP57128203A JP12820382A JPH0224611B2 JP H0224611 B2 JPH0224611 B2 JP H0224611B2 JP 57128203 A JP57128203 A JP 57128203A JP 12820382 A JP12820382 A JP 12820382A JP H0224611 B2 JPH0224611 B2 JP H0224611B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- superplastic
- metal plates
- plate
- recess
- 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
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
- 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)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
【発明の詳細な説明】
本発明は超塑性金属板から中空物品を製造する
方法に関するものである。詳しくは本発明は金属
板の接合と超塑性加工とを同時に行なうことによ
り、効率よく中空物品を製造する方法を提供する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing hollow articles from superplastic metal sheets. Specifically, the present invention provides a method for efficiently manufacturing hollow articles by simultaneously performing bonding of metal plates and superplastic working.
熱交換器や冷却器等に、中空管が板と一対とな
つた製品が利用されていることは周知である。こ
のものは予じめ管部分を溝状に形成した２枚の金
属板をブレージングで接合したり、２枚の金属板
を重ね合せて圧延によつて圧着し、次いで圧着間
隙に中空管路を形成するロールボンド法によつて
製作されている。しかし、これらの方法では、金
属板の接合と管路の形成とをそれぞれ別工程で行
わねばならない。本発明は超塑性板すなわち超塑
性特性を有する金属板を用いて、金属板の接合と
管路の形成とを同時に行なう方法を提供するもの
である。 It is well known that products in which a hollow tube is paired with a plate are used in heat exchangers, coolers, and the like. This product is made by joining two metal plates with groove-shaped pipes in advance by brazing, or by overlapping two metal plates and crimping them by rolling, and then inserting a hollow pipe into the crimping gap. It is manufactured using the roll bonding method. However, in these methods, joining the metal plates and forming the conduit must be performed in separate steps. The present invention provides a method for simultaneously joining metal plates and forming a conduit using a superplastic plate, that is, a metal plate having superplastic properties.
本発明によれば、少くとも一方が超塑性板であ
る２枚の金属板を重ね合せて両面から金型ではさ
むこと、金型のうち少くとも一方の超塑性板と接
触する方にはその接触面に凹所が設けられている
ものを用いること、重ね合せた金属板を金型で押
圧しつつ超塑性加工の温度条件下に保持して押圧
部分を接合すること、および２枚の金属板の間に
流体を送入して金型の凹所に面している超塑性板
を膨出させること、の各工程を経ることにより、
容易に中空物品を製造することができる。 According to the present invention, two metal plates, at least one of which is a superplastic plate, are overlapped and sandwiched between molds from both sides, and the one of the molds that comes into contact with at least one of the superplastic plates is Using a material with a recess on the contact surface, pressing the overlapped metal plates with a mold and holding them under the temperature conditions of superplastic processing to join the pressed parts, and two metal sheets By passing through the steps of injecting fluid between the plates to bulge the superplastic plate facing the recess of the mold,
Hollow articles can be easily manufactured.
本発明についてさらに詳細に説明すれば、本発
明は超塑性板を用い、これに接合と超塑性加工と
を同時に施すことにより、中空物品を製造する方
法である。なお、本明細書において接合と超塑性
加工とを同時に行なうとは、超塑性板を超塑性加
工の温度条件下に保持している間に、接合と超塑
性加工を行なうことを意味し、必ずしも両者を同
時並行的に行なう必要はない。 To explain the present invention in more detail, the present invention is a method of manufacturing a hollow article by using a superplastic plate and subjecting it to bonding and superplastic working at the same time. Note that in this specification, to perform bonding and superplastic working at the same time means to perform bonding and superplastic working while the superplastic plate is held under the temperature conditions for superplastic working, and does not necessarily mean that bonding and superplastic working are performed simultaneously. There is no need to do both at the same time.
本発明方法で中空物品を製造するには、先ず２
枚の金属板を用意する。このうち一方は超塑性板
であることが必要である。もう一方は、同じく超
塑性板であることが好ましいが、他の金属板であ
つてもよい。超塑性特性を有する合金は多数知ら
れており、そのいくつかのものは実用化されてい
る。その代表的なものはZn−22％Al合金である。
また本発明者らは、マグネシウム、マンガンおよ
びクロムを含むアルミニウム合金を、連続的に鋳
造圧延し、焼きなましたのち強く冷間圧延するこ
とにより、すぐれた超塑性特性を有する合金板が
得られることを見出した（特願昭56−36268、
119900、180247参照）。本発明方法は、これらの
任意の超塑性板に適用することができるが、陽極
酸化等の表面処理の容易なアルミニウム合金系の
超塑性板が実用上有利である。 To produce a hollow article using the method of the present invention, first
Prepare a metal plate. One of them needs to be a superplastic plate. The other plate is preferably a superplastic plate, but may be another metal plate. A large number of alloys having superplastic properties are known, and some of them are in practical use. A typical example is Zn-22% Al alloy.
In addition, the present inventors have discovered that an alloy plate with excellent superplastic properties can be obtained by continuously casting and rolling an aluminum alloy containing magnesium, manganese, and chromium, annealing it, and then strongly cold rolling it. Found (patent application 1983-36268,
119900, 180247). Although the method of the present invention can be applied to any of these superplastic plates, aluminum alloy-based superplastic plates, which can be easily subjected to surface treatment such as anodization, are practically advantageous.
本発明方法では、少くとも一方が超塑性板であ
る２枚の金属板を、金型をはさんで押圧しつつ超
塑性加工の温度条件下に保持する。金型として
は、目的とする中空物品の中空部分に対応する位
置を凹部にしたものを用いる。好ましくは中空物
品の中空部分に対応する形状を超塑性板との接触
面に設けた金型、すなわち中空物品に対応する雌
型を用いる。このような金型で、重ね合せた２枚
の金属板をはさんで押圧すると、金属板のうち金
型の非中空部分に位置する部分は金型により加圧
された状態となるが、中空部分に位置する部分は
加圧されない。従つて、この状態で超塑性加工の
温度条件下に保持すると、金属板のうち加圧され
ている部分が接合する。接合させる際の圧力、温
度、時間等は、２枚の金属板の接合特性および接
合部分に要求される接合強度により適宜決定す
る。例えばアルミニウム合金系の超塑性板同志で
あれば、圧力0.5Kg／mm2以上、温度450〜580℃の
条件下で１〜５分間保持することにより、ほぼ満
足すべき接合強度を得ることができる。なお、接
合強度が弱い場合には、得られた中空物品を450
〜580℃の炉中に保持して接合面の拡散を生起さ
せることにより、接合強度を向上させることが出
来る。なお、接合を促進するために、２枚の金属
板は予じめその表面を清浄にしておくのが好まし
い。例えばアルミニウム合金であれば、表面をブ
ラツシングしたり、苛性ソーダ水溶液で処理した
りして、表面の酸化皮膜を除去しておくのが好ま
しい。 In the method of the present invention, two metal plates, at least one of which is a superplastic plate, are held under the temperature conditions of superplastic working while being pressed with a mold in between. The mold used is one in which a recess is formed at a position corresponding to the hollow part of the intended hollow article. Preferably, a mold is used whose contact surface with the superplastic plate has a shape corresponding to the hollow part of the hollow article, that is, a female mold corresponding to the hollow article. When two overlapping metal plates are sandwiched and pressed with such a mold, the part of the metal plate that is located in the non-hollow part of the mold will be pressurized by the mold, but the hollow part will be pressed. The part located in the part is not pressurized. Therefore, if the metal plates are held under the temperature conditions of superplastic working in this state, the pressurized portions of the metal plates will be joined. The pressure, temperature, time, etc. for joining are appropriately determined depending on the joining characteristics of the two metal plates and the joining strength required for the joining portion. For example, in the case of aluminum alloy superplastic plates, almost satisfactory bonding strength can be obtained by holding them for 1 to 5 minutes at a pressure of 0.5 kg/mm 2 or more and a temperature of 450 to 580°C. . In addition, if the joint strength is weak, the obtained hollow article should be
The bonding strength can be improved by holding it in a furnace at ~580°C to cause diffusion at the bonding surface. Note that in order to promote bonding, it is preferable to clean the surfaces of the two metal plates in advance. For example, in the case of an aluminum alloy, it is preferable to remove the oxide film on the surface by brushing the surface or treating with a caustic soda aqueous solution.
一方、加圧されていない部分の金属板は、超塑
性加工により金型の形状に沿つて膨出させる。こ
れは、ブロー成形によるバルジ加工法であつて、
２枚の金属板の間に外部から流体、通常は気体を
圧入することにより容易に行なうことができる。
また、金属板の間隙に流体を送入すると共に金型
の凹所を真空にする真空成形法によることもでき
る。なお、超塑性板は通常、金型の凹所の壁面と
密着するまで膨出させ、金型を雌型とする中空物
品を製造する。しかし、所望ならば、膨出は金型
の凹所の壁面と接触しない程度に止めてもよい。
この場合には、金型としては凹所の部分が貫通孔
となつているものを用いることもできる。また、
重ね合せた金属板の間への流体の導入は、任意の
方法で行なうことができる。例えば金型に設ける
凹所を金型の端部まで延長し、ここに流体導入管
を収容し得る凹所を形成し、２枚の金属板の間に
流体導入管をはさんで金型で加圧することによ
り、金型−金属板−流体導入管を一体化させ、こ
の導入管を経て金属板の間に流体を導入するよう
にすることができる。また、別法として、金型の
凹所に位置する２枚の金属板の一方に孔をあけ、
この孔に対応する金型部分に流体の導入孔を開口
させ、金型内の管路を通つてきた流体が、該導入
口から金属板の孔を経て、２枚の金属板の間に入
るようにしてもよい。 On the other hand, the portion of the metal plate that is not pressurized is bulged out along the shape of the mold by superplastic processing. This is a bulge processing method using blow molding.
This can be easily done by injecting a fluid, usually a gas, from the outside between two metal plates.
Alternatively, a vacuum forming method may be used in which a fluid is introduced into the gap between the metal plates and at the same time the recesses of the mold are evacuated. Note that the superplastic plate is usually bulged until it comes into close contact with the wall surface of a recess in a mold to produce a hollow article using the mold as a female mold. However, if desired, the bulge may be limited to an extent that it does not contact the walls of the mold recess.
In this case, it is also possible to use a mold in which the recessed portion is a through hole. Also,
The fluid can be introduced between the stacked metal plates by any method. For example, a recess provided in the mold is extended to the end of the mold, a recess that can accommodate the fluid introduction tube is formed here, and the fluid introduction tube is sandwiched between two metal plates and pressurized by the mold. This makes it possible to integrate the mold, the metal plate, and the fluid introduction pipe, and introduce the fluid between the metal plates through this introduction pipe. Alternatively, a hole may be made in one of the two metal plates located in the recess of the mold.
A fluid introduction hole is opened in the mold part corresponding to this hole, and the fluid that has passed through the pipe in the mold enters between the two metal plates from the introduction hole through the hole in the metal plate. It's okay.
本発明方法では、金属板の接合と膨出とを並行
して行なうのが好ましいが、接合が完了してから
膨出を行なうこともできる。接合と膨出とを並行
して行なう場合には未だ接合部の強度が弱いの
で、金型の加圧条件は膨出に用いられる流体の圧
力よりも大きくしなければならない。しかし通
常、流体の圧力は１〜20Kg／cm2Ｇなので、金型の
圧力は一般的にはもつぱら接合の見地から決定し
得る。なお、流体の圧力は常法に従い、徐々に増
加するようにする。 In the method of the present invention, it is preferable to perform the joining and expanding of the metal plates in parallel, but it is also possible to perform the expanding after the joining is completed. When bonding and swelling are performed in parallel, the strength of the bonded portion is still weak, so the pressure condition of the mold must be greater than the pressure of the fluid used for swelling. However, since the fluid pressure is usually 1 to 20 kg/cm 2 G, the mold pressure can generally be determined from a joint standpoint. Note that the pressure of the fluid is gradually increased according to a conventional method.
接合およびブロー成形ないしは真空成形により
所定の形状の成形品が得られたならば、金型を開
放して成形品を取出す。前述のように、若し接合
部の強度が不十分な場合には、金型から取出した
成形品を引続いて超塑性加工の温度条件に保持し
て接合面の拡散を促進することにより、接合強度
を向上させることができる。通常、バルジ加工に
要する時間よりも接合に要する時間の方が長いの
で、バルジ加工が完了した段階で金型から成形品
を取出し、引続いて保温炉中で接合を完了させる
ことにより、金型の生産性を向上させることもで
きる。 After a molded article of a predetermined shape is obtained by bonding and blow molding or vacuum forming, the mold is opened and the molded article is taken out. As mentioned above, if the strength of the joint is insufficient, the molded product taken out of the mold can be held at the temperature conditions of superplastic working to promote diffusion at the joint surface. Bonding strength can be improved. Normally, the time required for joining is longer than the time required for bulge processing, so the molded product is removed from the mold after bulge processing is completed, and then the joining is completed in an insulated furnace. It can also improve productivity.
なお、本発明方法では、重ね合せる２枚の金属
板がいずれも超塑性板であるのが接合の容易な点
で好ましいが、超塑性板と非超塑性板との組合せ
にも適用することができる。この場合には、バル
ジ加工を受けるのは超塑性板だけであるから、こ
れと対向する金型面に中空部分に対応する形状を
設けておくことが必要である。 In addition, in the method of the present invention, it is preferable that the two metal plates to be superposed are both superplastic plates from the viewpoint of easy joining, but the method can also be applied to a combination of a superplastic plate and a non-superplastic plate. can. In this case, since only the superplastic plate undergoes bulge processing, it is necessary to provide a shape corresponding to the hollow portion on the mold surface facing the superplastic plate.
本発明方法によれば、２枚の金属板を用い、接
合と塑性加工とを同時に行なうことにより、容易
に中空物品を製作することができる。 According to the method of the present invention, a hollow article can be easily manufactured by using two metal plates and performing bonding and plastic working at the same time.
以下に実施例により本発明をさらに具体的に説
明するが、本発明はその要旨をこえない限り、以
下の実施例に限定されるものではない。 EXAMPLES The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to the following Examples unless it exceeds the gist thereof.
実施例 １
マグネシウム6.0％、珪素％2.5％、マンガン0.5
％、クロム0.15％、残部アルミニウムおよび通常
の不純物よりなる700℃のアルミニウム溶湯を、
直径30cmの２個の水冷ロールで構成された駆動鋳
型を用い、100cm／分の鋳造速度で連続的に鋳造
圧延して、厚さ6.0mmの帯状板を製造した。この
帯状板を475℃で６時間焼きなましたのち、冷間
圧延により厚さ1.0mmまで圧延して超塑性板とし
た。Example 1 Magnesium 6.0%, Silicon% 2.5%, Manganese 0.5
%, chromium 0.15%, balance aluminum and normal impurities.
A strip plate with a thickness of 6.0 mm was produced by continuous casting and rolling at a casting speed of 100 cm/min using a driving mold consisting of two water-cooled rolls with a diameter of 30 cm. This strip plate was annealed at 475°C for 6 hours and then cold rolled to a thickness of 1.0 mm to obtain a superplastic plate.
200×200mmの大きさの上記の超塑性板を２枚重
ね、これを中央に直径160mm、深さ20mmの浅い平
底の凹所を有し、約550℃に加熱されている２個
の金型ではさみ、約1.6Kg／mm2で加圧した。これ
を550〜570℃に加熱すると共に、金属板の間に４
Kg／cm2Ｇの空気を圧入した。空気の圧入は、下金
型の接触面に中央の凹所まで続く小さなくぼみを
設け、一方、この部分に位置する上方の超塑性板
に小さな穴をあけ、この穴と上金型に設けた空気
通路とを係合させることにより行なつた。 Two superplastic plates of 200 x 200 mm in size are stacked together, and these are placed in two molds that have a shallow flat-bottomed recess with a diameter of 160 mm and a depth of 20 mm in the center, and are heated to approximately 550°C. Using scissors, a pressure of approximately 1.6 kg/mm 2 was applied. Heat this to 550-570℃, and place 4 plates between metal plates.
Kg/cm 2 G of air was pressurized. For air injection, a small depression was made on the contact surface of the lower mold that continued to the central recess, while a small hole was made in the upper superplastic plate located in this area, and a hole was made in this hole and in the upper mold. This was done by engaging the air passage.
空気導入を開始してから５分後に金型を開き、
成形品を取出した。成形品は金型通りの形状に成
形されており、また２枚の超塑性板は強固に接合
していた。 Open the mold 5 minutes after starting air introduction,
I took out the molded product. The molded product was molded to the shape of the mold, and the two superplastic plates were firmly joined.
第１図および第２図は、本発明方法により中空
物品を製造する際の態様の１例を模式的に示すも
のであり、第１図は上下の金型とその間にはさま
れる２枚の金属板および金属板の間に位置する流
体導入管の関係を示し、第２図は第１図において
金型を閉じた状態を示している。
１……油圧シリンダー、２……上金型、３……
超塑性金属板、４……流体導入管、５……超塑性
金属板、６……下金型、７……下金型の流体導入
管収容部、８……上金型の流体導入管収容部、９
……下金型の凹部。
Figures 1 and 2 schematically show an example of the method of manufacturing a hollow article by the method of the present invention, and Figure 1 shows the upper and lower molds and the two sheets sandwiched between them. FIG. 2 shows the relationship between the metal plates and the fluid introduction tube located between the metal plates, and FIG. 2 shows a state in which the mold is closed in FIG. 1. 1...Hydraulic cylinder, 2...Upper mold, 3...
Superplastic metal plate, 4...Fluid introduction tube, 5...Superplastic metal plate, 6...Lower mold, 7...Fluid introduction tube housing part of lower mold, 8...Fluid introduction tube of upper mold Containment section, 9
...Concavity in the lower mold.
Claims (1)
を重ね合せて両面から金型ではさむこと、金型の
うち少くとも一方の超塑性板と接触する方にはそ
の接触面に凹所が設けられているものを用いるこ
と、重ね合せた金属板を金型で押圧しつつ超塑性
加工の温度条件下に保持して押圧部分を接合する
こと、および２枚の金属板の間に流体を送入して
金型の凹所に面している超塑性板を膨出させるこ
と、の各工程を経由することを特徴とする中空物
品の製造方法。 ２ 重ね合せた２枚の金属板が、いずれも超塑性
板であることを特徴とする特許請求の範囲第１項
記載の製造方法。 ３ 重ね合せた２枚の金属板の両面の金型が、い
ずれもその接触面の対向部分に同一形状の凹所を
有していることを特徴とする特許請求の範囲第２
項記載の製造方法。 ４ 金型に設けられた凹所が、重ね合せた金属板
の端部が位置する金型の周辺部まで連続してお
り、この端部から金属板の間に流体を送入するこ
とを特徴とする特許請求の範囲第１項ないし第３
項のいずれかに記載の製造方法。 ５ 超塑性板を金型の凹所の周壁と接触するまで
膨出させることを特徴とする特許請求の範囲第１
項ないし第４項のいずれかに記載の製造方法。[Scope of Claims] 1. Two metal plates, at least one of which is a superplastic plate, are stacked and sandwiched between molds from both sides, and at least one of the molds is in contact with the superplastic plate. The contact surface is provided with a recess, the stacked metal plates are pressed with a mold and held under the temperature conditions of superplastic processing to join the pressed parts, and the two metal plates are A method for manufacturing a hollow article, comprising the following steps: introducing a fluid between metal plates to bulge a superplastic plate facing a recess in a mold. 2. The manufacturing method according to claim 1, wherein the two superposed metal plates are both superplastic plates. 3. Claim 2, characterized in that the molds on both sides of the two stacked metal plates have recesses of the same shape in opposing portions of their contact surfaces.
Manufacturing method described in section. 4. The recess provided in the mold is continuous to the peripheral part of the mold where the end of the stacked metal plates is located, and the fluid is introduced between the metal plates from this end. Claims 1 to 3
The manufacturing method described in any of paragraphs. 5. Claim 1, characterized in that the superplastic plate is expanded until it comes into contact with the peripheral wall of the recess of the mold.
The manufacturing method according to any one of Items 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57128203A JPS5919037A (en) | 1982-07-22 | 1982-07-22 | Manufacture of hollow article from superplastic metallic plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57128203A JPS5919037A (en) | 1982-07-22 | 1982-07-22 | Manufacture of hollow article from superplastic metallic plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5919037A JPS5919037A (en) | 1984-01-31 |
| JPH0224611B2 true JPH0224611B2 (en) | 1990-05-30 |
Family
ID=14979016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57128203A Granted JPS5919037A (en) | 1982-07-22 | 1982-07-22 | Manufacture of hollow article from superplastic metallic plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5919037A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529452A (en) * | 1984-07-30 | 1985-07-16 | United Technologies Corporation | Process for fabricating multi-alloy components |
| CN102172706B (en) * | 2010-12-23 | 2013-01-02 | 李铭齐 | Tee forming and processing apparatus |
| WO2018011934A1 (en) * | 2016-07-14 | 2018-01-18 | 新日鐵住金株式会社 | Method for manufacturing cladded molded body and method for manufacturing heat-resistant gasket |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5499769A (en) * | 1978-01-25 | 1979-08-06 | Masanobu Nakamura | Molding process of modified superrplastic material |
| JPS5691930A (en) * | 1979-12-24 | 1981-07-25 | Sumitomo Light Metal Ind Ltd | Formation of bulged hollow part to aluminum plate body |
| JPS5752522A (en) * | 1980-09-13 | 1982-03-29 | Akio Nakano | Die casting method |
-
1982
- 1982-07-22 JP JP57128203A patent/JPS5919037A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5919037A (en) | 1984-01-31 |
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