JPH0622729B2 - Method for manufacturing hollow mold material with no weld line on the outer surface by porthole die - Google Patents

Method for manufacturing hollow mold material with no weld line on the outer surface by porthole die

Info

Publication number
JPH0622729B2
JPH0622729B2 JP1256217A JP25621789A JPH0622729B2 JP H0622729 B2 JPH0622729 B2 JP H0622729B2 JP 1256217 A JP1256217 A JP 1256217A JP 25621789 A JP25621789 A JP 25621789A JP H0622729 B2 JPH0622729 B2 JP H0622729B2
Authority
JP
Japan
Prior art keywords
metal
die
hollow mold
porthole die
welding
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
Application number
JP1256217A
Other languages
Japanese (ja)
Other versions
JPH03118909A (en
Inventor
栄治 杉尾
国男 大久保
正己 須藤
秀司 帰山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Aluminum Can Corp
Original Assignee
Showa Aluminum Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP1256217A priority Critical patent/JPH0622729B2/en
Publication of JPH03118909A publication Critical patent/JPH03118909A/en
Publication of JPH0622729B2 publication Critical patent/JPH0622729B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、ポートホールダイスを用いて、外面に溶着
線のない中空型材を製造する方法に関する。
Description: FIELD OF THE INVENTION The present invention relates to a method for producing a hollow die member having no weld line on the outer surface by using a porthole die.

従来の技術及び課題 ポートホールダイスを用いて中空型材を製造した場合、
型材に長さ方向に沿う複数本の溶着線が形成されること
はよく知られている。これは、周知のように、ビレット
を構成する金属が、ポートホースダイス内に入るときに
その足部によって複数に分断され、そして内部溶着室で
相互に溶着され、その後に成形隙間から出ていくという
過程を経て中空型材に成形されることに原因がある。
Conventional technology and problems When a hollow die material is manufactured using a porthole die,
It is well known that a plurality of welding lines are formed on a mold material along the length direction. This is because, as is well known, the metal forming the billet is divided into a plurality of parts by its feet when it enters the port hose die, and is welded to each other in the internal welding chamber, and then exits from the molding gap. The cause is that it is molded into a hollow mold material through the process.

しかしながら、型材の表面に上記のような溶着線が存在
することは、型材に割れ等の欠陥を生じさせる原因とな
る。
However, the presence of the above-mentioned welding line on the surface of the mold material causes defects such as cracks in the mold material.

この発明は、かかる問題点に鑑み、外面に溶着線が存在
せず、そのため割れ等の欠陥を生じにくい中間型材を製
造することのできる方法を提供することを目的とする。
In view of such problems, it is an object of the present invention to provide a method capable of producing an intermediate mold material which does not have welding lines on the outer surface thereof and therefore is less likely to cause defects such as cracks.

課題を解決するための手段 上記目的を達成するため、この発明は、ポートホールダ
イスの溶着室内の周端部に、ビレットを構成する第1金
属と同種又は異種の第2金属で構成した環状の押出材料
を嵌合配置した状態で、中空型材の押出を行うことを特
徴とするポートホールダイスによる、外面に溶着線のな
い中空型材の製造方法を要旨とする。
Means for Solving the Problems In order to achieve the above object, the present invention has an annular structure formed of a second metal that is the same as or different from the first metal forming the billet at the peripheral end portion inside the welding chamber of the porthole die. A gist of a method for manufacturing a hollow mold material having no welding line on the outer surface by a port hole die is characterized in that the hollow mold material is extruded in a state where the extruded material is fitted and arranged.

作用 上記方法では、ビレットを構成する第1金属は、ポート
ホールダイス内に分断状態となって入った後、内部の溶
着室に流入し、相互に溶着される。そして溶着室内に入
ってから成形隙間に向かう過程で、この第1金属の流れ
が溶着室内の環状押出材料に作用し、それを構成する第
2金属が第1金属のメタルフローに追従して成形隙間を
向うものとなる。これにより、成形隙間を出た中空型材
は、その外面が第2金属によって被覆されたものに形成
され、外面に溶着線が存在しないものとなる。
Action In the above method, the first metal forming the billet enters the porthole die in a divided state, then flows into the internal welding chamber, and is welded to each other. The flow of the first metal acts on the annular extruded material in the welding chamber in the process of entering the welding chamber and then toward the forming gap, and the second metal forming the second metal follows the metal flow of the first metal. It faces the gap. As a result, the hollow mold member that has left the molding gap is formed such that the outer surface thereof is covered with the second metal, and no welding line exists on the outer surface.

実施例 以下、この発明の実施例を図面に基づいて説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.

第1図及び第2図において、(1)は本発明方法に使用
されるポートホールダイスで、雄型(2)と雌型(3)
とによって構成されている。雌型(3)は、その後端面
中央に凹状の溶着室(4)を有し、かつその中央に該雌
型(3)を前後方向に貫通する押出孔(5)を有するも
のに形成されている。なお、押出孔(5)の内周面に
は、ベアリンク部(6)が設けられている。一方、雄型
(2)は、前後方向に貫通する複数個のポート孔(8)
…を周方向に間隔的に有し、かつそれらに囲まれた中心
部に前方突出状の成形用凸部(9)を備えている。上記
雌型(3)と雄型(2)とは、相互に組み合わされるこ
とによって、第2図に示されるように、成形用凸部
(9)が押出孔(5)内に位置するものとなり、両者間
に環状の成形隙間(10)が形成される。なお、成形用凸
部(9)の外周部には、前記ベアリング部(6)に対向
するベアリング部(11)が形成されている。
In FIGS. 1 and 2, (1) is a porthole die used in the method of the present invention, which is a male die (2) and a female die (3).
It is composed of and. The female die (3) has a concave welding chamber (4) at the center of its rear end surface and an extrusion hole (5) penetrating the female die (3) in the front-rear direction at the center thereof. There is. A bare link portion (6) is provided on the inner peripheral surface of the extrusion hole (5). On the other hand, the male mold (2) has a plurality of port holes (8) penetrating in the front-back direction.
Are provided at intervals in the circumferential direction, and a forwardly projecting molding convex portion (9) is provided in the central portion surrounded by them. When the female mold (3) and the male mold (2) are combined with each other, the molding convex portion (9) is located in the extrusion hole (5) as shown in FIG. An annular molding gap (10) is formed between the two. A bearing portion (11) facing the bearing portion (6) is formed on the outer peripheral portion of the molding convex portion (9).

また、本発明方法では、第1図及び第2図に示されるよ
うな、環状に形成された押出材料(14)を使用する。こ
の環状押出材料(14)は、その外周面(14a )及び前面
(14b )が溶着室(4)内の形状に適合するものに形成
され、溶着室(4)内にしっくりと嵌合配置されるもの
となされている。また、この環状押出材料(14)の高さ
は溶着室(4)の高さと略一致するものにされ、両型
(2)(3)を組合せた状態で雄型(2)の前面が環状
押出材料(14)の後面(14c )に溶着し、環状押出材料
(14)が溶着室(4)内に位置決め状態に固定されるも
のとなされている。そして更に、環状押出材料(14)の
内部は、前方に向けて縮径するテーパー孔(15)に形成
されている。
Further, in the method of the present invention, an extruded material (14) having an annular shape as shown in FIGS. 1 and 2 is used. This annular extruded material (14) is formed such that its outer peripheral surface (14a) and front surface (14b) conform to the shape in the welding chamber (4), and is fitted and arranged in the welding chamber (4) properly. It is supposed to be. Further, the height of the annular extruded material (14) is set to be substantially the same as the height of the welding chamber (4), and the front surface of the male die (2) is annular with the two die (2) (3) combined. The extruded material (14) is welded to the rear surface (14c) of the extruded material (14), and the annular extruded material (14) is positioned and fixed in the welding chamber (4). Further, the inside of the annular extruded material (14) is formed into a tapered hole (15) whose diameter decreases toward the front.

中空型材(17)の製造は、環状押出材料(14)を溶着室
(4)内に嵌合配置した雌型(3)を雄型(2)と組み
合わせ、これを、第3図に示されるように、ビレット
(13)の装填されたコンテナ(18)の前部に設置し、ス
テム(19)を前進せしめることにより達成される。即
ち、ビレット(13)を構成する第1金属(A)は、各ポ
ート孔(8)…を介してポートホールダイス(1)内に
分断状態となって入り、内部の溶着室(4)に流入して
相互に溶着される。そして溶着室(4)内に入ってから
成形隙間(10)に向かう過程で、この第1金属(A)の
流れが溶着室(4)内の環状押出材料(14)に作用し、
それを構成する第2金属(B)が第1金属(A)のメタ
ルフローに追従して成形隙間(10)に向うものとなる。
なお、環状押出材料(14)の内部は、上記のように前方
に向かって縮径するテーパー孔(15)に形成されている
ことにより、第2金属(B)はスムーズに第1金属
(A)のメタルフローに追従するものとなる。これによ
り、成形隙間(10)を出た中空型材(17)は、第4図に
示されるように、外面が第2金属(B)の層によって被
覆された、溶着線のない型材となる。
The hollow mold (17) is manufactured by combining the female mold (3) having the annular extruded material (14) fitted and arranged in the welding chamber (4) with the male mold (2), which is shown in FIG. Thus, it is achieved by installing the billet (13) at the front of the container (18) loaded with the billet (13) and advancing the stem (19). That is, the first metal (A) forming the billet (13) enters the port hole die (1) through each port hole (8) in a divided state and enters the internal welding chamber (4). They flow in and are welded together. The flow of the first metal (A) acts on the annular extruded material (14) in the welding chamber (4) in the process of entering the welding chamber (4) and then toward the forming gap (10),
The second metal (B) that constitutes it follows the metal flow of the first metal (A) toward the molding gap (10).
Since the inside of the annular extruded material (14) is formed into the tapered hole (15) whose diameter is reduced toward the front as described above, the second metal (B) smoothly moves to the first metal (A). ) Will follow the metal flow. As a result, the hollow mold member (17) exiting the molding gap (10) becomes a mold member having an outer surface covered with the layer of the second metal (B) and having no welding line, as shown in FIG.

なお、環状押出材料(14)を構成する第2金属(B)
と、ビレット(13)を構成する第1金属(A)とは、相
互に同種又は異種の金属によって製作される。例えば、
ビレット(13)に押出性に優れたAl−Mg−Si系の
合金を使用する場合において、外面に溶着線のない単一
金属よりなる中空型材を製造しようとするときは、環状
押出材料(14)を構成する第2金属(B)として第1金
属(A)と同じAl−Mg−Si系の合金を使用すれば
よい。なお、この場合、得られた中空型材は溶着線のな
い第2金属による層を有するから、強度の向上された型
材に製造されるものとなる。また、外面にろう材層を有
する中空クラッド材を製造しようとするときは第2金属
(B)としてAl−Si系合金を使用し、また外面に犠
牲腐食層を有する中空クラッド材を製造しようとすると
きは第2金属(B)としてAl−Zn系合金を使用すれ
ばよい。なお、この場合、ろう材層や犠牲腐食層に溶着
線が存在しない中空型材に製造されるものとなる。この
ように、第1金属(A)、第2金属(B)の種類は種々
変更されてよい。
The second metal (B) that constitutes the annular extrusion material (14)
And the first metal (A) forming the billet (13) are made of the same or different metals. For example,
In the case of using an Al-Mg-Si alloy having excellent extrudability for the billet (13), when an hollow extruded material made of a single metal having no weld line on the outer surface is to be produced, an annular extruded material (14 The same Al—Mg—Si-based alloy as the first metal (A) may be used as the second metal (B) that constitutes (1). In this case, since the obtained hollow mold member has the layer made of the second metal having no welding line, it can be manufactured into a mold member having improved strength. When manufacturing a hollow clad material having a brazing material layer on the outer surface, an Al-Si alloy is used as the second metal (B), and a hollow clad material having a sacrificial corrosion layer on the outer surface is manufactured. In this case, an Al-Zn alloy may be used as the second metal (B). In this case, the hollow mold member is manufactured so that the brazing material layer and the sacrificial corrosion layer do not have welding lines. As described above, the types of the first metal (A) and the second metal (B) may be variously changed.

発明の効果 上述の次第で、この発明方法は、ポートホールダイスの
溶着室内の周端部に、環状押出材料を嵌合配置して押出
を行うものであるから、得られた中空型材は、ビレット
を構成する第1金属によって形成された溶着線のある内
層と、環状押出材料を構成する第2金属によって形成さ
れた溶着線のない外層との2層構造をなすものとなり、
従って、外面に溶着線がなく、そのため割れ等の欠陥を
生じにくい品質の向上された中空型材を製造することが
できる。
EFFECTS OF THE INVENTION Depending on the above, the method of the present invention is to perform extrusion by fittingly disposing the annular extruded material at the peripheral end portion in the welding chamber of the porthole die, so that the obtained hollow mold member is a billet. To form a two-layer structure of an inner layer having a welding line formed of the first metal forming the second metal and an outer layer having a welding line formed of the second metal forming the annular extruded material,
Therefore, there is no welding line on the outer surface, so that it is possible to manufacture a hollow mold member with improved quality in which defects such as cracks are less likely to occur.

【図面の簡単な説明】[Brief description of drawings]

第1図ないし第4図はこの発明の実施例を示すもので、
第1図はポートホールダイスを、雄型と雌型とを分離し
た状態で示す斜視図、第2図はポートホールダイスの縦
断面図、第3図は本発明方法実施途上の押出加工装置の
縦断面図、第4図は本発明方法により製造された中空型
材の横断面図である。 (1)……ポートホールダイス、(4)……溶着室、
(13)……ビレット、(14)……環状押出材料、(17)
……中空型材、(A)……第1金属、(B)……第2金
属。
1 to 4 show an embodiment of the present invention,
FIG. 1 is a perspective view showing a porthole die in a state where a male mold and a female mold are separated from each other, FIG. 2 is a vertical sectional view of the porthole die, and FIG. FIG. 4 is a longitudinal sectional view, and FIG. 4 is a transverse sectional view of the hollow die member manufactured by the method of the present invention. (1) …… Port hole die, (4) …… Welding chamber,
(13) …… Billet, (14) …… Round extrusion material, (17)
... Hollow mold material, (A) ... first metal, (B) ... second metal.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 帰山 秀司 大阪府堺市海山町6丁224番地 昭和アル ミニウム株式会社内 (56)参考文献 特開 昭56−165512(JP,A) 特公 昭44−146(JP,B1) 特公 昭49−43467(JP,B2) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shuji Kakiyama 6-224 Kaiyamacho, Sakai City, Osaka Prefecture Showa Aluminum Co., Ltd. (56) -146 (JP, B1) Japanese Patent Publication Sho-49-43467 (JP, B2)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ポートホールダイスの溶着室内の周端部
に、ビレットを構成する第1金属と同種又は異種の第2
金属で構成した環状の押出材料を嵌合配置した状態で、
中空型材の押出を行うことを特徴とするポートホールダ
イスによる、外面に溶着線のない中空型材の製造方法。
1. A second metal that is the same as or different from the first metal that constitutes the billet is provided at the peripheral end of the welding chamber of the porthole die.
With the annular extruded material made of metal fitted and arranged,
A method for producing a hollow molding material having no welding line on the outer surface by a porthole die, which comprises extruding the hollow molding material.
JP1256217A 1989-09-29 1989-09-29 Method for manufacturing hollow mold material with no weld line on the outer surface by porthole die Expired - Lifetime JPH0622729B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1256217A JPH0622729B2 (en) 1989-09-29 1989-09-29 Method for manufacturing hollow mold material with no weld line on the outer surface by porthole die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1256217A JPH0622729B2 (en) 1989-09-29 1989-09-29 Method for manufacturing hollow mold material with no weld line on the outer surface by porthole die

Publications (2)

Publication Number Publication Date
JPH03118909A JPH03118909A (en) 1991-05-21
JPH0622729B2 true JPH0622729B2 (en) 1994-03-30

Family

ID=17289560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1256217A Expired - Lifetime JPH0622729B2 (en) 1989-09-29 1989-09-29 Method for manufacturing hollow mold material with no weld line on the outer surface by porthole die

Country Status (1)

Country Link
JP (1) JPH0622729B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6523839B2 (en) * 2014-08-11 2019-06-05 株式会社ゴーシュー MAGNESIUM BASE ALLOY TUBE AND METHOD FOR MANUFACTURING THE SAME

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028744B2 (en) * 1972-08-31 1975-09-18
JPS56165512A (en) * 1980-05-22 1981-12-19 Showa Alum Corp Extruded aluminum shape

Also Published As

Publication number Publication date
JPH03118909A (en) 1991-05-21

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