JPH08174045A - Production of metallic tube material - Google Patents

Production of metallic tube material

Info

Publication number
JPH08174045A
JPH08174045A JP32211394A JP32211394A JPH08174045A JP H08174045 A JPH08174045 A JP H08174045A JP 32211394 A JP32211394 A JP 32211394A JP 32211394 A JP32211394 A JP 32211394A JP H08174045 A JPH08174045 A JP H08174045A
Authority
JP
Japan
Prior art keywords
tube material
extrusion
molding
partition wall
forming
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
Application number
JP32211394A
Other languages
Japanese (ja)
Inventor
Tatsuji Ono
達治 小野
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 JP32211394A priority Critical patent/JPH08174045A/en
Publication of JPH08174045A publication Critical patent/JPH08174045A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/02Tubular elements of cross-section which is non-circular
    • F28F1/022Tubular elements of cross-section which is non-circular with multiple channels

Abstract

PURPOSE: To extrude integrally a tube material with communicating holes juxtaposed at spaced intervals on partition walls. CONSTITUTION: A female mold 7 having a forming hole bearing part 6 forming the outer peripheral part of the tube material and a male mold 10 having plural pieces of forming projecting parts 9... for forming the respective cells inside the tube material are combined. A die 11 for extrusion formed in such a manner that an extruding material is joined and compression bonded between the forming projecting parts 9... and that the partition walls are formed is used. Extrusion working is executed at the specified extrusion rate at which intermittent bead cracks are caused in the partition walls.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、例えば、エアコン用
凝縮器等の熱交換器用のチューブ材などとして用いられ
る、アルミニウム等の金属製のチューブ材の製造方法に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a tube material made of metal such as aluminum used as a tube material for a heat exchanger such as a condenser for an air conditioner.

【0002】[0002]

【従来の技術】例えばカークーラー用の凝縮器の熱交換
用チューブ材として、図4に示されるように、その耐圧
性向上のため、仕切り壁(51)により周壁(52)の上下
の壁(52a )(52a )が連接され、内部が幅方向に複数
の室(53)(53)に区画されたアルミニウム製押出材に
よる偏平状のチューブ材(T´)が用いられる傾向にあ
る。
2. Description of the Related Art As a tube material for heat exchange of a condenser for a car cooler, for example, as shown in FIG. 4, in order to improve the pressure resistance thereof, a partition wall (51) forms a wall above and below a peripheral wall (52). There is a tendency that a flat tube material (T ') made of an extruded aluminum material in which 52a and 52a are connected to each other and whose inside is divided into a plurality of chambers (53) and (53) in the width direction is used.

【0003】しかしながら、このチューブ材(T´)を
採用した凝縮器では、そのコアを前後方向に流通するエ
アーが、主に、チューブ材(T)内における幅方向風上
側を流通する冷媒とは活発に熱交換を行うが、チューブ
材(T´)の幅方向風下側を流通する冷媒とは十分な熱
交換をなさず、そのため、チューブ材(T´)内の幅方
向風下側を流通する冷媒の凝縮が不十分となって熱交換
効率を一定限度以上に高くえないという問題があった。
However, in the condenser employing this tube material (T '), the air flowing through the core in the front-rear direction is mainly the refrigerant flowing along the widthwise windward side in the tube material (T). Although heat exchange is actively carried out, it does not sufficiently exchange heat with the refrigerant flowing in the leeward side of the tube material (T ') in the width direction, and therefore flows in the leeward side in the width direction of the tube material (T'). There has been a problem that the heat exchange efficiency cannot be increased beyond a certain limit due to insufficient condensation of the refrigerant.

【0004】そこで、図5(イ)(ロ)に示されるよう
に、仕切り壁(51)に、隣り合う通路室(53)(53)同
士を連通する孔(54)…が、チューブ材軸線方向に間隔
的に列設された構造のチューブ材(T'')が提案されて
いる(特開昭58−136419号公報参照)。かかる
構造のチューブ材(T'')によれば、チューブ材
(T'')内の冷媒がこの連通孔(4)…を通じて幅方向
にも行来を行い、チューブ材(T'')を通過する冷媒の
凝縮作用が促進されて、熱交換効率が向上される。
Therefore, as shown in FIGS. 5 (a) and (b), the partition wall (51) has holes (54) for communicating the adjacent passage chambers (53) (53) with each other, and the tube material axis line. There has been proposed a tube material (T ″) having a structure in which the tubes are arranged at intervals in the direction (see JP-A-58-136419). According to the tube material (T ″) having such a structure, the refrigerant in the tube material (T ″) also travels in the width direction through the communication holes (4) ... The condensing action of the passing refrigerant is promoted, and the heat exchange efficiency is improved.

【0005】そして、上記のような、仕切り壁(51)に
連通孔(54)…を有するチューブ材(T'')の押出製造
方法として、従来、次のような方法が提案されている。
即ち、図5(ハ)(ニ)に示されるように、ダイスとし
て、仕切り壁(51)を含むチューブ材(T'')の横断面
形状に対応する成形隙間(55)を有する雌雄組み合わせ
ダイス(56)において、仕切り壁(51)を成形する成形
隙間部分(55a )にマンドレル(57)の先端部が進退可
能に配置されたものを用いる。この進退マンドレル(5
7)により、押出中、該マンドレル(57)の先端部を仕
切り壁成形用隙間部分(55a )から後退させることによ
って該仕切り壁成形用隙間部分(55a )にも押出材料が
通過される一方、マンドレル(57)の先端部を仕切り壁
成形用隙間部分(55a )に進出させることによって同隙
間部分(55a )への押出材料の流入が阻止される。この
ような進退マンドレル(57)を備えたダイス(56)を用
い、押出中、該マンドレル(57)を所定のタイミングに
て進退作動せしめるものである(同特開昭58−136
419号公報参照)。これにより、図5(イ)(ロ)に
示されるような、仕切り壁(1)にその長さ方向に間隔
的に連通孔(4)…が列設されたチューブ材(T'')が
押出製造される。
The following method has been conventionally proposed as a method for producing the tube material (T ″) having the communication holes (54) in the partition wall (51) as described above.
That is, as shown in FIGS. 5 (C) and 5 (D), a male / female combination die having a molding gap (55) corresponding to the cross-sectional shape of the tube material (T '') including the partition wall (51) as a die. In (56), a mandrel (57) having a distal end portion which is arranged so as to be able to move back and forth is used in a molding gap portion (55a) for molding the partition wall (51). This retreat mandrel (5
According to 7), during extrusion, the extruded material also passes through the partition wall forming gap portion (55a) by retracting the tip end portion of the mandrel (57) from the partition wall forming gap portion (55a), By advancing the tip of the mandrel (57) into the partition wall forming gap (55a), the extrusion material is prevented from flowing into the gap (55a). By using a die (56) equipped with such an advancing / retreating mandrel (57), the mandrel (57) is actuated forward / backward at a predetermined timing during extrusion (JP-A-58-136).
419). As a result, a tube material (T '') having communication holes (4) ... arranged in a row in the partition wall (1) at intervals in the length direction thereof as shown in FIGS. Extruded and manufactured.

【0006】[0006]

【発明が解決しようとする課題】しかしながら、上記の
ような押出製造法では、ダイス(56)の構造を複雑にす
ると共に、マンドレル(57)を進退動作させるための制
御駆動機構を要するなど、設備構成面での複雑化を招
き、チューブ材の製造コストを高くしてしまうという問
題があった。
However, in the extrusion manufacturing method as described above, the structure of the die (56) is complicated, and a control drive mechanism for moving the mandrel (57) forward and backward is required. There is a problem that the manufacturing cost of the tube material is increased because the structure is complicated.

【0007】この発明は、上記のような従来の問題点に
鑑み、仕切り壁に連通孔を有する押出材製のチューブ材
をコスト的に有利に製造することができる製造方法を提
供することを目的とする。
In view of the above conventional problems, it is an object of the present invention to provide a manufacturing method capable of cost-effectively manufacturing an extruded tube material having a communication hole in a partition wall. And

【0008】[0008]

【課題を解決するための手段】上記目的において、この
発明は、内部が、チューブ材軸線方向に延ばされた仕切
り壁により複数の室に区画されると共に、該仕切り壁
に、隣り合う室同士を連通する孔がチューブ材軸線方向
に間隔的に列設された金属製チューブ材の製造方法であ
って、チューブ材の外周部を成形する成形孔ベアリング
部を有する雌型と、チューブ材の内部の各室を成形する
複数個の成形凸部を有する雄型とが組み合わされ、押出
材料が成形凸部間で合流圧着されて仕切り壁が成形され
るようになされている押出用ダイスを用い、仕切り壁に
断続的なスピードクラックを生じさせる所定の一定押出
速度にて、押出加工を行うことを特徴とする金属製チュ
ーブ材の製造方法を要旨とする。
In the above object, according to the present invention, the interior is divided into a plurality of chambers by a partition wall extending in the axial direction of the tube material, and the chambers adjacent to each other are defined by the partition walls. A method for manufacturing a metallic tube material in which holes communicating with each other are arranged at intervals in the tube material axial direction, wherein a female die having a molding hole bearing portion for molding an outer peripheral portion of the tube material, and an inside of the tube material. A male die having a plurality of molding protrusions for molding each chamber is combined, and an extrusion die is used in which the extruded material is joined and pressure-bonded between the molding protrusions to form the partition wall, A gist of a method for producing a metallic tube material is characterized in that extrusion processing is performed at a predetermined constant extrusion rate that causes intermittent speed cracks in a partition wall.

【0009】なお、この場合、押出に使用する前記押出
用ダイスとして、雌型成形孔ベアリング部と成形凸部と
で囲まれたチューブ材周壁成形用隙間の隙間間隔が、成
形凸部間の仕切り壁成形用隙間の隙間間隔よりも相対的
に大きく形成されたものを用いるのがよい。
In this case, as the extrusion die used for extrusion, the gap of the tube material peripheral wall molding gap surrounded by the female molding hole bearing portion and the molding convex portion is the partition between the molding convex portions. It is preferable to use a wall forming gap that is formed relatively larger than the gap.

【0010】[0010]

【作用】一般に、押出材料がダイス内で合流圧着されて
所定の形状の押出材として押出成形されるタイプの押出
加工においては、その押出速度が、所定の適正な押出速
度である場合には、押出材料同士がダイスを通過する前
に適正に合流圧着されるが、この押出速度をある一定以
上に大きくして押出を行うと、押出材料がダイス内で互
い合流圧着される前にダイスを通過してしまい、長さ方
向に連続した欠肉、即ちスピードクラックを生じてしま
うことは良く知られている。
In general, in an extrusion process of a type in which an extruded material is joined and pressure-bonded in a die and extruded as an extruded material having a predetermined shape, when the extrusion speed is a predetermined proper extrusion speed, The extruded materials are properly joined and pressure-bonded before they pass through the die.However, if the extrusion speed is increased above a certain level and extrusion is performed, the extruded materials pass through the die before they are joined and pressure-bonded with each other in the die. It is well known that this results in a continuous wall thickness defect, that is, a speed crack.

【0011】ところで、上記の高低両押出速度の中間
の、ある押出速度範囲においては、その範囲内の一定の
押出速度にて押出加工を行うと、ダイス内で押出材料が
合流圧着されたり、されなかったりを繰り返し、得られ
た押出材がその長さ方向に断続的に欠肉したものに押出
加工される。そのような押出速度範囲が存在する。
By the way, in a certain extrusion speed range between the above-mentioned high and low extrusion speeds, when the extrusion processing is carried out at a constant extrusion speed within the range, the extruded materials are joined and pressure-bonded in the die. The extruded material obtained is repeatedly extruded into pieces having a lack of thickness in the longitudinal direction. Such an extrusion speed range exists.

【0012】本発明方法は、このような、断続的なスピ
ードクラックを生じさせる押出速度範囲の存在に着目
し、それを利用したものである。
The method of the present invention focuses on the existence of such an extrusion speed range which causes intermittent speed cracks, and utilizes it.

【0013】即ち、上記押出製造方法では、チューブ材
の外周部を成形する成形孔ベアリング部を有する雌型
と、チューブ材の内部の各室を成形する複数個の成形凸
部を有する雄型とが組み合わされ、押出材料が成形凸部
間で合流圧着されて仕切り壁が成形されるようになされ
ている押出用ダイスを用い、仕切り壁に断続的なスピー
ドクラックを生じさせる所定の一定押出速度にて、押出
加工を行うものであることにより、仕切り壁に、隣り合
う室同士を連通する孔が長さ方向に間隔的に列設された
金属製チューブ材が押出一体成形される。
That is, in the above extrusion manufacturing method, a female mold having a molding hole bearing portion for molding the outer peripheral portion of the tube material, and a male mold having a plurality of molding convex portions for molding each chamber inside the tube material. , The extrusion material is joined and pressure-bonded between the molding projections to form the partition wall, and a predetermined constant extrusion speed that causes intermittent speed cracks in the partition wall is used. By performing the extrusion process, the metal tube material in which the holes that connect the adjacent chambers are arranged in a row at intervals in the length direction is integrally formed by extrusion on the partition wall.

【0014】この方法では、このように、所定の一定押
出速度にて押出加工を行うものであることにより、押出
中に押出速度を変更すべく制御する必要もなく、しか
も、ダイスを仕切り壁に孔を成形するための付加的な構
成部材を備えたものに構成する必要もなく、押出におい
て設備構成面での変更が不要で、仕切り壁に孔を有する
チューブ材が安価に押出製造される。
In this method, since the extrusion process is performed at a predetermined constant extrusion speed, it is not necessary to control the extrusion speed during the extrusion, and the die is placed on the partition wall. It is not necessary to configure the apparatus with an additional component for forming the hole, there is no need to change the equipment structure in the extrusion, and the tube material having the hole in the partition wall can be manufactured by extrusion at low cost.

【0015】また、この場合、押出に使用する押出用ダ
イスとして、雌型成形孔ベアリング部と成形凸部とで囲
まれたチューブ材周壁成形用隙間の隙間間隔が、成形凸
部間の仕切り壁成形用隙間の隙間間隔よりも相対的に大
きく形成されたものを用いることにより、押出材料が、
仕切り壁成形用隙間よりもチューブ材周壁成形用隙間に
相対的に流れ込みやすくなり、従って、仕切り壁に断続
的なスピードクラックを生じさせる押出速度にて押出を
行っても、チューブ材の周壁にスピードクラックによる
欠肉を生じてしまうことがなく、適正なチューブ材が得
られる。
Further, in this case, as an extrusion die used for extrusion, the gap of the tube material peripheral wall molding gap surrounded by the female molding hole bearing portion and the molding convex portion is the partition wall between the molding convex portions. By using a material which is formed relatively larger than the molding gap, the extruded material is
It is relatively easier to flow into the tube material peripheral wall forming gap than the partition wall forming gap, so even if extrusion is performed at an extrusion speed that causes intermittent speed cracks in the partition wall, the tube material peripheral wall speed An appropriate tube material can be obtained without causing flesh due to cracks.

【0016】[0016]

【実施例】次に、本発明方法の具体的な実施例を図面に
基づいて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the method of the present invention will be described with reference to the drawings.

【0017】製造対象は、図1に示されるようなチュー
ブ材(T)であって、このチューブ材(T)は、例え
ば、図3に示されるような凝縮器用のチューブ材(T)
として用いられるものである。この凝縮器は、同図3に
示されるように、並列状に配置された複数本のアルミニ
ウム製チューブ材(T)…の両端部に一対のアルミニウ
ム製中空ヘッダー(31)(31)が連通状態に接続される
と共に、チューブ材(T)…間にアルミニウム製のコル
ゲートフィン(32)…が配置された構成の、いわゆるマ
ルチフローないしパラレルフロータイプと称されるアル
ミニウム製の凝縮器である。なお、(33)は仕切り部材
で、ヘッダー(31)(31)内を仕切り、冷媒が蛇行しな
がら凝縮器内部を流通するようにするものである。(3
4)は冷媒入口部、(35)は同出口部である。
The object of manufacture is a tube material (T) as shown in FIG. 1, and this tube material (T) is, for example, a tube material (T) for a condenser as shown in FIG.
Is used as. In this condenser, as shown in FIG. 3, a pair of aluminum hollow headers (31) (31) are in communication with both ends of a plurality of aluminum tube members (T) arranged in parallel. And a corrugated fin (32) made of aluminum is arranged between the tube materials (T) and so on, which is a so-called multi-flow or parallel flow type aluminum condenser. In addition, (33) is a partition member which partitions the inside of the headers (31) and (31) so that the refrigerant circulates inside the condenser while meandering. (3
4) is the refrigerant inlet and (35) is the outlet.

【0018】そして、チューブ材(T)は、図1(イ)
に示されるように、横断面長円状の偏平なチューブ材
で、周壁(2)の内部が多数の仕切り壁(1)…によ
り、幅方向に多数の室(3)…に区画されたものであ
る。そして、このチューブ材(T)の各仕切り壁(1)
…には、図1(ロ)(ハ)に示されるように、隣り合う
室(3)…同士を連通する孔(4)…がチューブ材軸線
方向に間隔的に列設されたものなされている。このチュ
ーブ材(T)は、幅Bが18mm、高さHが1.3m
m、上下の周壁(2a)(2a)の各肉厚t1 が0.24m
m、側部周壁(2b)の肉厚t2 が0.3mmに寸法設定
され、周壁(2)内は、仕切り壁(1)…により幅方向
に33の室(3)…に区画されたものである。
The tube material (T) is as shown in FIG.
As shown in Fig. 4, a flat tube material having an oval cross section, in which the inside of the peripheral wall (2) is divided into a number of chambers (3) in the width direction by a number of partition walls (1). Is. And each partition wall (1) of this tube material (T)
As shown in FIGS. 1 (b) and (c), the holes (4) communicating with the adjacent chambers (3) are arranged at intervals in the axial direction of the tube material. There is. This tube material (T) has a width B of 18 mm and a height H of 1.3 m.
m, the thickness t 1 of each of the upper and lower peripheral walls (2a) (2a) is 0.24 m
m, the thickness t 2 of the side peripheral wall (2b) was set to 0.3 mm, and the inside of the peripheral wall (2) was partitioned into 33 chambers (3) in the width direction by the partition walls (1). It is a thing.

【0019】このチューブ材(T)の押出製造に使用す
るダイスは、図2に示されるように、チューブ材(T)
の外周部を成形する成形孔ベアリング部(6)を有する
雌型(7)と、チューブ材(T)内の各室(3)…を成
形するのための多数の成形凸部(9)…を有する雄型
(10)とを組み合わせて構成された組み合わせダイス
(11)によるもので、図2(イ)に示されるように、そ
の組み合わせ状態において、成形孔ベアリング部(6)
と成形凸部(9)…との間にチューブ材周壁成形用隙間
(12)が形成されると共に、成形凸部(9)…相互間に
仕切り壁成形用隙間(13)が形成されるようになされて
いる。
As shown in FIG. 2, the die used in the extrusion manufacturing of the tube material (T) is a tube material (T).
A female mold (7) having a molding hole bearing portion (6) for molding the outer peripheral portion of the tube, and a large number of molding projections (9) for molding each chamber (3) in the tube material (T). With a combination die (11) configured by combining with a male mold (10) having the above, as shown in FIG. 2 (a), in the combined state, the forming hole bearing portion (6) is formed.
So that a tube material peripheral wall forming gap (12) is formed between the molding convex portion (9) and the partition wall forming gap (13) between the molding convex portions (9). Has been done.

【0020】雄型(10)の各成形凸部(9)…は、図2
(ロ)に示されるように、前方突出状の雄型突部(14)
の先端板状部に幅方向に間隔的に所定深さのスリット
(15)…を入れて形成されたもので、この先端板状部の
上下両側から押出材料が各スリット(15)…内に流入さ
れて合流圧着されることにより、仕切り壁(1)が成形
されるようになされている。また、雄型(10)の最側部
の成形凸部(9)の外側にも所定深さの凹部(16)が設
けられ、チューブ材(T)の上下の周壁部(2a)(2a)
を成形する押出材料が該凹部(16)内に流入されて合流
圧着されることにより、長円環状の周壁(2)が成形さ
れるようになされている。
Each molding convex portion (9) of the male mold (10) is shown in FIG.
As shown in (b), the male protrusion (14) protruding forward is formed.
It is formed by inserting slits (15) with a predetermined depth in the width direction of the tip plate portion of the, and extruded material is inserted into each slit (15) from both upper and lower sides of the tip plate portion. The partition wall (1) is formed by inflowing and merging pressure. Further, a concave portion (16) having a predetermined depth is also provided on the outer side of the outermost molding convex portion (9) of the male mold (10), and upper and lower peripheral wall portions (2a) (2a) of the tube material (T) are provided.
The extruded material for molding is flowed into the recess (16) and is joined and pressure-bonded, whereby the elliptical peripheral wall (2) is molded.

【0021】そして、このダイス(11)において、図2
(イ)に示されるように、チューブ材周壁成形用隙間
(12)の隙間間隔i1 、i2 は、仕切り壁成形用隙間
(13)…の隙間間隔i3 よりも相対的に大きく設計され
ている。具体的には、チューブ材周壁成形用隙間(12)
の隙間間隔がその上下平坦周壁部成形用隙間(12a )に
おいてi1 =0.27mm、左右の周壁成形用隙間(12
b )においてi2 =0.35mmに設定されているのに
対して、仕切り壁成形用隙間(13)の隙間間隔i3はそ
の半分程度の0.14mmに設定され、押出材料が、仕
切り壁成形用隙間(13)よりも周壁成形用隙間(12)の
方へ相対的に良く流れ込みやすくなるようにされてい
る。従って、このようなダイス(11)によって押出加工
されるチューブ材(T)の仕切り壁(1)の肉厚は、結
果的に、図1(イ)(ロ)に示されるように、周壁
(2)の肉厚よりも薄く成形されることになる。
Then, in this die (11), as shown in FIG.
As shown in (a), the gap intervals i 1 , i 2 of the tube material peripheral wall forming gap (12) are designed to be relatively larger than the gap interval i 3 of the partition wall forming gap (13). ing. Specifically, the gap for forming the peripheral wall of the tube material (12)
Of the upper and lower flat peripheral wall forming gaps (12a) is i 1 = 0.27 mm, and the left and right peripheral wall forming gaps (12a) are
In b), i 2 is set to 0.35 mm, while the gap i 3 of the partition wall forming gap (13) is set to about half that, 0.14 mm, and the extruded material is the partition wall. The peripheral wall molding gap (12) relatively easily flows into the peripheral wall molding gap (12) more easily than the molding gap (13). Therefore, the wall thickness of the partition wall (1) of the tube material (T) extruded by such a die (11) is, as a result, as shown in FIGS. It will be formed thinner than the wall thickness of 2).

【0022】また、雄型(10)において、図2(ロ)に
示されるように、最側部の成形凸部(9)の外側の凹部
(16)の最奥部位置は、各成形凸部(9)…間のスリッ
ト(15)の最奥部位置よりも後方に設定され、押出材料
が、最側部の成形凸部(9)の外側の凹部(16)におい
ては、各成形凸部(9)…間のスリット(15)における
よりも、相対的に押出方向の手前側の位置で圧着される
ようになされている。
In the male mold (10), as shown in FIG. 2 (b), the innermost position of the concave portion (16) outside the outermost molding protrusion (9) is at each molding protrusion. The extrusion material is set rearward of the innermost position of the slit (15) between the parts (9), and the extrusion material is formed in the recesses (16) outside the outermost molding projections (9). It is adapted to be crimped at a position relatively closer to the front side in the extrusion direction than in the slit (15) between the parts (9).

【0023】更に、各成形凸部(9)…は、その先端部
が雌型成形孔ベアリング部(6)よりも前方に突出さ
れ、仕切り壁成形用の隙間(13)におけるベアリング長
さが、周壁成形用隙間(12)におけるベアリング長さよ
りも長くされ、それによって、押出材料が、仕切り壁成
形用隙間(13)よりも周壁成形用隙間(12)の方へ相対
的に良く流れ込みやすくなるようにされている。
Further, the tip end of each of the molding projections (9) is projected further forward than the female molding hole bearing portion (6), and the bearing length in the partition wall molding gap (13) is It is made longer than the bearing length in the peripheral wall forming gap (12), so that the extruded material can flow into the peripheral wall forming gap (12) relatively better than the partition wall forming gap (13). Has been

【0024】そして、上記のような構成のダイス(11)
を用い、仕切り壁(1)…に断続的なスピードクラック
を生じさせる所定の一定押出速度にて押出加工を行う。
Then, the dice (11) having the above-mentioned structure
Is used to perform an extrusion process at a predetermined constant extrusion rate that causes intermittent speed cracks in the partition walls (1).

【0025】このような押出速度範囲は、使用するダイ
スの構成、使用するビレッドの材質、ビレットの温度等
の押出条件によって異なるものであり、従って、試押に
よって経験的に求めるのが一般的である。
Such an extrusion speed range varies depending on the configuration of the die used, the material of the billet used, the temperature of the billet and the like, and is therefore empirically obtained by trial pressing. is there.

【0026】因みに、A6063合金製のアルミニウム
合金ビレットを用い、ビレット温度を550℃に設定し
て上記押出を行ったところ、製品押出速度が30〜45
m/分の範囲において、図1(ハ)に示されるような、
連通孔(4)…が仕切り壁(1)…の長さ方向に間隔的
に列設されたチューブ材(T)が押出成形された。ま
た、得られたチューブ材(T)の周壁(2)への欠肉は
見られなかった。
Incidentally, when an aluminum alloy billet made of A6063 alloy was used and the billet temperature was set at 550 ° C. and the above extrusion was carried out, the product extrusion rate was 30 to 45.
In the range of m / min, as shown in FIG.
The tube material (T) in which the communication holes (4) ... Are arranged at intervals in the longitudinal direction of the partition walls (1) is extruded. Further, no flesh was found on the peripheral wall (2) of the obtained tube material (T).

【0027】なお、同じ条件において、30m/分を下
回る押出速度にて押出を行ったところ、連通孔のない仕
切り壁を有するチューブ材が押出成形された。また、4
5m/分を上回る押出速度にて押出を行ったところ、仕
切り壁の欠落したチューブ材が押出成形された。
Under the same conditions, when extrusion was carried out at an extrusion speed of less than 30 m / min, a tube material having a partition wall without communication holes was extruded. Also, 4
When extrusion was performed at an extrusion speed of more than 5 m / min, a tube material having a missing partition wall was extruded.

【0028】なお、上記実施例では、製造対象を熱交換
器用チューブ材としているが、これに限定されるもので
はなく、要は、構造上、内部が、チューブ材軸線方向に
延ばされた仕切り壁により複数の室に区画されると共
に、該仕切り壁に、隣り合う室同士を連通する孔がチュ
ーブ材軸線方向に間隔的に列設されたものとなされてい
る金属製チューブ材であればよい。
In the above embodiment, the tube material for the heat exchanger is manufactured, but the present invention is not limited to this. In essence, the structure is such that the inner part of the partition material is extended in the axial direction of the tube material. It may be a metal tube material which is divided into a plurality of chambers by a wall, and holes which communicate with adjacent chambers are arranged in a row at intervals in the tube material axial direction in the partition wall. .

【0029】[0029]

【発明の効果】上述の次第で、この発明の金属製チュー
ブ材の製造方法は、内部が、チューブ材軸線方向に延ば
された仕切り壁により複数の室に区画されると共に、該
仕切り壁に、隣り合う室同士を連通する孔がチューブ材
軸線方向に間隔的に列設された金属製チューブ材の製造
方法であって、チューブ材の外周部を成形する成形孔ベ
アリング部を有する雌型と、チューブ材の内部の各室を
成形する複数個の成形凸部を有する雄型とが組み合わさ
れ、押出材料が成形凸部間で合流圧着されて仕切り壁が
成形されるようになされている押出用ダイスを用い、仕
切り壁に断続的なスピードクラックを生じさせる所定の
一定押出速度にて、押出加工を行うものであるから、内
部の仕切り壁に連通孔が間隔的に列設されたチューブ材
を押出により製造することができる。
As described above, according to the method for manufacturing a metallic tube material of the present invention, the inside is divided into a plurality of chambers by the partition wall extending in the axial direction of the tube material, and A method of manufacturing a metallic tube material in which holes communicating between adjacent chambers are arranged in a row in the tube material axial direction at intervals, and a female die having a molding hole bearing portion for molding an outer peripheral portion of the tube material. , A male material having a plurality of molding projections for molding each chamber inside the tube material is combined, and the extruded material is joined and pressure-bonded between the molding projections to form the partition wall. Since the extrusion process is performed at a predetermined constant extrusion rate that causes intermittent speed cracks in the partition wall using a die, a tube material in which communication holes are lined up in the internal partition wall at intervals. Manufactured by extrusion Rukoto can.

【0030】しかも、一定押出速度にて押出加工を行う
ものであるから、押出中に押出速度を変更すべく制御す
る必要もなく、しかも、ダイスを仕切り壁に孔を成形す
るための付加的な特別の構成部材を備えたものに構成す
る必要もなく、製造設備構成面での変更が不要で、この
ようなチューブ材を安価にコスト的に有利に押出製造す
ることができる。
Moreover, since the extrusion process is carried out at a constant extrusion rate, it is not necessary to control the extrusion rate during the extrusion, and an additional die for forming a hole in the partition wall. It is not necessary to configure the apparatus with a special component, and there is no need to change the configuration of the manufacturing equipment, and such a tube material can be inexpensively manufactured by extrusion in a cost-effective manner.

【0031】また、この場合に、押出に使用する前記押
出用ダイスとして、雌型成形孔ベアリング部と成形凸部
とで囲まれたチューブ材周壁成形用隙間の隙間間隔が、
成形凸部間の仕切り壁成形用隙間の隙間間隔よりも相対
的に大きく形成されたものを用いることにより、チュー
ブ材周壁へのスピードクラックによる欠肉発生を確実に
防止し得て、所望の適正なチューブ材を確実性高く押出
製造することができる。
Further, in this case, as the extrusion die used for extrusion, the gap of the tube material peripheral wall molding gap surrounded by the female molding hole bearing portion and the molding convex portion is
By using a partition wall that is formed to be relatively larger than the partition wall molding gap between the molding protrusions, it is possible to reliably prevent the occurrence of wall thinning due to speed cracks on the peripheral wall of the tube material, and to achieve the desired It is possible to extrude various tube materials with high reliability.

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

【図1】実施例方法により製造しようとするチューブ材
を示すもので、図(イ)は端面図、図(ロ)は部分横断
面図、図(ハ)は図(ロ)のI−I線断面矢視図であ
る。
1A and 1B show a tube material to be manufactured by an embodiment method, in which FIG. 1A is an end view, FIG. 2B is a partial cross-sectional view, and FIG. 1C is II of FIG. FIG.

【図2】実施例方法において使用するダイスを示すもの
で、図(イ)は断面正面図、図(ロ)は断面平面図、図
(ハ)は図(ロ)のII−II線断面矢視図である。
2A and 2B show dies used in an example method, wherein FIG. 2A is a sectional front view, FIG. 2B is a sectional plan view, and FIG. 2C is a sectional arrow taken along the line II-II in FIG. 2B. It is a perspective view.

【図3】製造対象であるチューブ材が用いられる凝縮器
を示すもので、図(イ)は全体正面図、図(ロ)は同平
面図である。
3A and 3B show a condenser in which a tube material to be manufactured is used. FIG. 3A is an overall front view and FIG.

【図4】従来のチューブ材を示す斜視図である。FIG. 4 is a perspective view showing a conventional tube material.

【図5】図(イ)は他の従来例にかかるチューブ材の横
断面図、図(ロ)は図(イ)のIII−III線断面矢
視図、図(ハ)は該チューブを製造する押出用ダイスの
断面正面図、図(ニ)は図(ハ)のIV−IV線断面図
である。
5 (a) is a cross-sectional view of a tube material according to another conventional example, FIG. 5 (b) is a sectional view taken along the line III-III of FIG. (A), and FIG. Is a cross-sectional front view of the extrusion die, and FIG. 4D is a cross-sectional view taken along the line IV-IV of FIG.

【符号の説明】[Explanation of symbols]

T…チューブ材 1…仕切り壁 2…周壁 3…室 4…連通孔 6…成形孔ベアリング部 7…雌型 9…成形凸部 10…雄型 11…ダイス 12…周壁成形隙間 13…仕切り壁成形隙間 T ... Tube material 1 ... Partition wall 2 ... Peripheral wall 3 ... Chamber 4 ... Communication hole 6 ... Molding hole bearing part 7 ... Female mold 9 ... Molding convex part 10 ... Male mold 11 ... Die 12 ... Perimeter wall molding gap 13 ... Partition wall molding Gap

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 内部が、チューブ材軸線方向に延ばされ
た仕切り壁により複数の室に区画されると共に、該仕切
り壁に、隣り合う室同士を連通する孔がチューブ材軸線
方向に間隔的に列設された金属製チューブ材の製造方法
であって、 チューブ材の外周部を成形する成形孔ベアリング部を有
する雌型と、チューブ材の内部の各室を成形する複数個
の成形凸部を有する雄型とが組み合わされ、押出材料が
成形凸部間で合流圧着されて仕切り壁が成形されるよう
になされている押出用ダイスを用い、 仕切り壁に断続的なスピードクラックを生じさせる所定
の一定押出速度にて、押出加工を行うことを特徴とする
金属製チューブ材の製造方法。
1. The inside is divided into a plurality of chambers by a partition wall extending in the axial direction of the tube material, and holes for communicating adjacent chambers are formed in the partition wall at intervals in the axial direction of the tube material. A method for manufacturing a metal tube material arranged in a row, comprising a female die having a molding hole bearing portion for molding the outer peripheral portion of the tube material, and a plurality of molding convex portions for molding each chamber inside the tube material. Using a die for extrusion that is combined with a male mold that has an extrusion material and the extrusion material is joined and pressure-bonded between the molding projections to form the partition wall. A method for producing a metal tube material, which comprises performing extrusion processing at a constant extrusion speed.
【請求項2】 押出に使用する前記押出用ダイスとし
て、雌型成形孔ベアリング部と成形凸部とで囲まれたチ
ューブ材周壁成形用隙間の隙間間隔が、成形凸部間の仕
切り壁成形用隙間の隙間間隔よりも相対的に大きく形成
されたものを用いる請求項1に記載の金属製チューブ材
の製造方法。
2. The extrusion die used for extrusion, wherein the gap of the tube material peripheral wall forming gap surrounded by the female forming hole bearing portion and the forming convex portion is for forming the partition wall between the forming convex portions. The method for producing a metal tube material according to claim 1, wherein a material formed to be relatively larger than the clearance is used.
JP32211394A 1994-12-26 1994-12-26 Production of metallic tube material Pending JPH08174045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32211394A JPH08174045A (en) 1994-12-26 1994-12-26 Production of metallic tube material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32211394A JPH08174045A (en) 1994-12-26 1994-12-26 Production of metallic tube material

Publications (1)

Publication Number Publication Date
JPH08174045A true JPH08174045A (en) 1996-07-09

Family

ID=18140069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32211394A Pending JPH08174045A (en) 1994-12-26 1994-12-26 Production of metallic tube material

Country Status (1)

Country Link
JP (1) JPH08174045A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109013735A (en) * 2018-08-21 2018-12-18 洛阳理工学院 A kind of double blanks fusing soldering bimetallic plates extrusion dies of double rod and its application method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109013735A (en) * 2018-08-21 2018-12-18 洛阳理工学院 A kind of double blanks fusing soldering bimetallic plates extrusion dies of double rod and its application method
CN109013735B (en) * 2018-08-21 2023-12-01 洛阳理工学院 Double-rod double-blank fusion welding bimetallic plate extrusion die and use method thereof

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