JPS5973113A - Manufacture of drawn pipe - Google Patents
Manufacture of drawn pipeInfo
- Publication number
- JPS5973113A JPS5973113A JP18264082A JP18264082A JPS5973113A JP S5973113 A JPS5973113 A JP S5973113A JP 18264082 A JP18264082 A JP 18264082A JP 18264082 A JP18264082 A JP 18264082A JP S5973113 A JPS5973113 A JP S5973113A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- die
- bearing
- diam
- pipe
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は資源開発用のボーリングロッド、ケーシング、
アウターロッド、インナーロッド等の管を製造する管引
抜き方法に関する。[Detailed Description of the Invention] The present invention provides a boring rod, a casing, and a
The present invention relates to a method for drawing tubes for manufacturing tubes such as outer rods and inner rods.
従来例えば径が大きく、厚肉で第１図に示すような管を
製造するには両端部の鍛造製管と中間の一様径の管とを
溶接Ｗして製造していた。Conventionally, for example, a large diameter, thick-walled tube as shown in FIG. 1 was manufactured by welding together forged tubes at both ends and a tube with a uniform diameter in the middle.
才た外径約コ５〜３左烟、肉厚コ、／〜３．２咽程度で
自転車等のフレーム材等に用いる小径、薄肉管の場合は
第２図のような引抜装置で製造していた。Small-diameter, thin-walled pipes with an outer diameter of about 5 to 3 mm and a wall thickness of about 3.2 mm, used for bicycle frame materials, etc., are manufactured using a drawing device as shown in Figure 2. was.
第２図について説明する。第１図（ａ）は第１図のＡ部
の縦断面図であって、床に固定したフレーム／のほぼ中
央部にダイスａを固定するダイス支持台３を設け、プラ
グ弘とプラグｌを支えるプラグ支持棒左を備え、プラグ
支持棒５はプラグ支持台乙に図示しない油圧シリンダ等
を介して固定する。素材管７はプラグ弘、プラグ支持棒
Ｓの外側に嵌入され、その先端部７ａはハサミｇにて挾
持され、ハサミｇは引抜き車９に設けられる。引抜き車
？のツメ１０は図示しない強力な駆動源により駆動され
たチェーン／／により強力に引張られることにより、ダ
イスユとプラグ弘との間を挟圧され引抜かれて素材管７
より製品７ｂが製造される。FIG. 2 will be explained. FIG. 1(a) is a vertical cross-sectional view of part A in FIG. A left plug support rod 5 is provided, and the plug support rod 5 is fixed to the plug support base B via a hydraulic cylinder (not shown) or the like. The material tube 7 is fitted onto the outside of the plug rod and the plug support rod S, and its tip 7a is held by scissors g, which are provided on the extraction wheel 9. A towing car? The claw 10 is strongly pulled by a chain // driven by a strong drive source (not shown), and is squeezed between the die and the plug and pulled out, and the material tube 7 is pulled out.
Product 7b is manufactured from this.
第２図の装置で管を製造する場合外径１種で内径の異る
管は第３図（ａ）の様に管引抜き方向ｅに対し、プラグ
弘をダイスコの手前に引抜きに与らないように素材管７
と遊隙をもたせて保持し、パイプ先端部７ａを引張られ
ると小内径管部力で出来、第３図（ｂ）の様にダイスコ
内にプラスタを押入れで引抜かれると大内径管部が出来
る。When manufacturing tubes using the apparatus shown in Figure 2, for tubes with one type of outer diameter and different inner diameters, as shown in Figure 3 (a), in the tube drawing direction e, do not place the plug in front of the die and participate in the drawing. Like material tube 7
When the tip 7a of the pipe is pulled, a small inner diameter tube is formed by force, and when the plaster is pushed into the die and pulled out, a large inner diameter tube is formed. .
次に内径が７種類で外径が異る管は第７図（ａ）の様に
プラスタをダイスコに押入れで引抜くと外径の小さい管
が製造され、第７図（ｂ）の様にプラスタをダイスλの
左方に押し出して素材管７が引抜かれると、ダイスコと
プラスタの小径部との間で外径がしぼられ、更に進むと
プラスタの大径部で素利管りは径を拡大され、内径はプ
ラグｙの大径部と同一径となり、外径は第り図（ａｌに
よるものよりも大径のパイプ７ｂが製造される。Next, for tubes with seven different inner diameters and different outer diameters, as shown in Figure 7(a), the plaster is pushed into a die and pulled out, producing a tube with a smaller outer diameter, as shown in Figure 7(b). When the plaster is pushed to the left of the die λ and the material tube 7 is pulled out, the outer diameter is narrowed between the die and the small diameter part of the plaster, and as it moves further, the diameter of the material tube is reduced by the large diameter part of the plaster. The pipe 7b is enlarged so that the inner diameter is the same as the large diameter part of the plug y, and the outer diameter is larger than that of the pipe 7b.
前記の通り、従来の装置によると、（１）第３図（ａ）
のように作業された小内径鋼管はプラグの内圧がかから
なくて外径をしぼられたため、皺が出来やすい。（２）
第７図（ｋｌ）のような作業により出来た内径が７種類
で外径が大きい鋼管に於ては、先づダイスのベアリング
面とタップの小径ベアリング面とで出来た鋼管を更にタ
ップの大径ベアリング面で拡張する結果出来るので、一
応外見は第５図（ｆ）のような外見になるので、ここで
第５図（ｆ）を借りて、この場合を説明する。ｄｌｌ：
タップの大ベアリング径、ｄＪ：ダイスのベアリング径
、ｄ／：鋼管の大外形、ｄＪ：タップの小ベアリング径
とするとｄｌｌは鋼管の内径、ｄＪは鋼管の小外径とな
るが、鋼管の大外形ｄ／はダイスとプラグのベアリング
径と直接結びつかない。ｄ／＝ｆ（ｃｌ、７．ａ、２．
ａｔＩ）という函数関係が成立ち、ｄ／、ｄ、２．（ｌ
を独立して決められない。即ち最も希望するａｌ、ｄ、
２．ａｐを決めることは即ち、ｄ／＝ｆ（ｄＪ、ｄＪ
、ｄｌｌ）の函数関係の解の中で最も希望する値に近い
ものを選択することにしかならない。という不便さをは
らんでいる。（３）製造された鋼管は７種類の内径で外
径が異る二種類の寸法を有するか、内径が異る二種類の
寸法を有し７種類の外径かの二種類の鋼管に限られる。As mentioned above, according to the conventional device, (1) Fig. 3(a)
Small inner diameter steel pipes that have been worked on in this way tend to wrinkle easily because the outer diameter is reduced without the internal pressure of the plug being applied. (2)
For steel pipes with 7 types of inner diameters and large outer diameters made by the process shown in Figure 7 (kl), first, the steel pipes made from the bearing surface of the die and the small diameter bearing surface of the tap are further processed into larger taps. Since this is the result of expansion on the radial bearing surface, the external appearance will be as shown in FIG. 5(f), so this case will be explained using FIG. 5(f). dll:
If the large bearing diameter of the tap, dJ: the bearing diameter of the die, d/: the large external diameter of the steel pipe, and dJ: the small bearing diameter of the tap, dll is the inner diameter of the steel pipe, and dJ is the small outer diameter of the steel pipe, but The outer diameter d/ is not directly related to the bearing diameter of the die and plug. d/=f(cl, 7.a, 2.
atI) holds, and d/, d, 2. (l
cannot be determined independently. That is, the most desired al, d,
2. Determining ap means d/=f(dJ, dJ
, dll) that is closest to the desired value among the solutions of the functional relationship. It is fraught with inconvenience. (3) Manufactured steel pipes are limited to two types: either seven inner diameters and two different outer diameters, or two different inner diameters and seven outer diameters. It will be done.
（４）プラグのコ固定位置をとらせるのに油圧シリンダ
に内蔵したストッパ等を使用されているが、大引抜力を
要する場合は多数のシリンダを使用することになり、そ
れ等の間に釣合装置等が必要となり、構造複雑となる欠
点がある。(4) A stopper built into the hydraulic cylinder is used to hold the plug in the fixed position, but if a large pulling force is required, multiple cylinders are used, and a This method requires a coupling device, etc., which has the disadvantage of complicating the structure.
本発明は複数径の管の引抜方法に於て、これ等の不具合
を改善し、ダイスおよびプラグのベアリング部を夫々複
数として常に素材管をダイスとプラグとのベアリング面
で挾圧し乍ら引抜くことにより、正確で、所要の寸法を
有する複数の内、外径をもつ管を製造する方法を提供す
ることを目的とする。The present invention improves these problems in a method for drawing pipes of multiple diameters, and uses a plurality of die and plug bearing parts to draw out the material pipe while always clamping it between the bearing surfaces of the die and the plug. It is therefore an object of the present invention to provide a method for manufacturing tubes with multiple inner and outer diameters that are accurate and have the required dimensions.
以下、本発明の引抜管の製造方法の実施例についてのべ
る。厚内で大径の複数径を有する管を正確に引抜きによ
り製造する方法はダイス、プラグを移動可能に強固に支
えることが出来る装置を使用し、ダイスのベアリング面
とプラグのベアリング面とを相対峙させ挟圧し乍ら引抜
くことである。従って複数筒のベアリング面を持つダイ
スと複数個のベアリング面を持つプラグとを、管の引抜
き作業中に相対的に移動せしめることである。Examples of the method for manufacturing a drawn pipe of the present invention will be described below. A method for accurately manufacturing pipes with multiple diameters within the thickness and large diameter by drawing is to use a device that can firmly support the die and plug in a movable manner, and to align the bearing surface of the die with the bearing surface of the plug. The idea is to confront them, squeeze them, and then pull them out. Accordingly, the die having multiple bearing surfaces and the plug having multiple bearing surfaces are moved relative to each other during the tube drawing operation.
例えば夫々コ箇のベアリング面を持つダイスコとプラグ
ｌとを使用する方法としては第５図（ａ）の位置即ちダ
イスコのベアリング径６１面とプラグ弘のベアリング径
６３面が対峙する位置で、外径ｄＪ、内径ｄ３の管を製
造する場合、第３図（ｂ）の位置即ちタイスコのベアリ
ング径ｄ、２面とプラスタのベアリング径ｄ４Ｚ面が対
峙する位置で外径ｄ２、内径ｄｌｌの管を製造する場合
、第３図（Ｃ）の位置即ちダイスコのベアリング径６１
面とプラグｌのベアリング径６１１面が対峙する位置で
外径ｃｌ／、内径ｄ ＩＩの管を製造する場合がある。For example, a method of using a die and a plug L each having two bearing surfaces is to place the die at the position shown in FIG. When manufacturing a tube with a diameter dJ and an inner diameter d3, the tube with an outer diameter d2 and an inner diameter dll is manufactured at the position shown in Fig. 3(b), that is, at the position where the bearing diameter d, 2 surface of the Tyco and the bearing diameter d4Z surface of the plaster face each other. When manufacturing, the position shown in Fig. 3 (C), that is, the bearing diameter 61 of the die
In some cases, a tube having an outer diameter cl/ and an inner diameter d II is manufactured at a position where the surface and the bearing diameter 611 surface of the plug l face each other.
先づ第３図（ｅ）の様な管を製造するにはダイスコとプ
ラスタの相対位置を第７段は第５図（ａ）、第２段は第
３図（ｂ）、第３段は第３図（Ｃ）の位置を順次とらせ
る。この相対位置をとらせるのに、（１）ダイスを固定
してプラグｌを基点から左へ一段に移動する。即ち第Ｓ
図（ａ）の位置を基点として第２段は第５図（１））の
位置、第３段は第３図（Ｃ）の位置に移動することであ
る。（２）ダイスコを固定してプラグ亭を基点より／段
左へ移動し、次にプラグｌを固定してダイスを固定して
いた位置から／股布へ移動する。即ち第３図（ａ）の位
置を基点として第一段は第３図（ｂ）の位置、第３段は
第３図（Ｃ）の位置に移動することは同じである。First, to manufacture a tube like the one shown in Figure 3(e), the relative positions of the dice and plaster are shown in Figure 5(a) for the seventh stage, Figure 3(b) for the second stage, and Figure 3(b) for the third stage. Have them take the positions shown in Figure 3(C) in sequence. To obtain this relative position, (1) fix the die and move the plug l one step to the left from the base point. That is, No. S
The second step is to move to the position shown in FIG. 5(1)), and the third step is to move to the position shown in FIG. 3(C), using the position shown in FIG. 3(a) as a reference point. (2) Fix the dice and move the plug bow to the left of the base point, then fix the plug l and move the dice from the fixed position to the crotch cloth. That is, the first stage moves to the position shown in FIG. 3(b), and the third stage moves to the position shown in FIG. 3(c) using the position shown in FIG. 3(a) as a base point.
然し使用する装置の面では（１）にはダイス支持台固定
、プラグ支持台は３固定点を持つ装置が必要であり、（
２）にはダイス支持台、プラグ支持台共に一同定点を持
つ装置が必要である。However, in terms of the equipment used, (1) requires a device with a die support stand fixed and a plug support stand with three fixation points;
2) requires a device that has a single point for both the die support and the plug support.
なお、引抜作業は連続的に行われる。即ちダイスλ或は
プラグ亭がｌ固定位置より次の、固定位置への移動は、
ダイスコ或はプラグｌを駆動する油圧ユニットにあらか
じめ組込まれた自動制御により行われ、鋼管径の変化部
も同径部と同様に連続作業により造成される。Note that the extraction work is performed continuously. In other words, the movement of the die λ or the plug tab from the l fixed position to the next fixed position is as follows:
This is done by automatic control that is pre-installed in the hydraulic unit that drives the dice or the plug 1, and the portions with varying diameters of the steel pipe are also created by continuous work, just like the portions with the same diameter.
次に第に図（ｄ）の様な鋼管を製造するには、ダイスλ
とプラグ亭の相互位置を第１段は第３図（ａ）（外径（
１，２、内径ｄ３の鋼管が出来る）の位置にセットし、
第一段は第３図（ｂ）（外径ｄ２、内径ｄりの鋼管が出
来る）の位置にセットし、第３段は第Ｓ図（ａ）（外径
ｄ−１内径ｄ３の鋼管が出来る）の位置にセットする。Next, in order to manufacture a steel pipe as shown in Figure (d), a die λ
Figure 3(a) shows the mutual positions of the
1, 2, to create a steel pipe with an inner diameter of d3).
The first stage is set in the position shown in Figure 3 (b) (a steel pipe with an outer diameter d2 and an inner diameter d is created), and the third stage is set in the position shown in Figure S (a) (a steel pipe with an outer diameter d-1 and an inner diameter d3 is created). (possible) position.
この相互位置をとらせるのに、（１）ダイス、コを固定
してプラグ亭を基点から左へ即ち第３図（ａ）の位置を
基点とシテ、次にダイス−は固定してプラグ亭を左へ移
動し第５図（ｂ）の位置にセットし、更にダイスコは固
定してプラグ亭を右へ移動し第Ｓ図（ａ）の位置に戻す
。（２）プラグ亭を固定しダイスコを移動する方法で第
５図（ａ）の位置から、第Ｓ図（ｂ）の位置に移動し、
さらに第３図（ａ）の位置に戻すことは（１）と同じで
あるが、使用する装置の而では（１）ではダイス支持台
は固定、プラグ支持台は一同定点を持つ装置が必要１褐
り、（２）ではプラグ支持台は固定、ダイス支持台は一
同定点を持つ装置が必要である。In order to take this mutual position, (1) fix the dice and turn the plug tab from the base point to the left, that is, the position shown in Figure 3 (a) as the base point, then fix the die and move the plug tab to the left. Move the plug to the left and set it in the position shown in Figure 5(b), then fix the die and move the plug bow to the right and return it to the position shown in Figure S(a). (2) Move from the position shown in Figure 5 (a) to the position shown in Figure S (b) by fixing the plug bow and moving the dice,
Furthermore, returning to the position shown in Figure 3 (a) is the same as (1), but considering the equipment used, (1) requires a device in which the die support is fixed and the plug support has a single point. In case of (2), the plug support is fixed and the die support requires a device with a single point.
更に第３図（ｆ）の様な鋼管を製造するには、ダイスコ
とプラグ亭の相互位置を第１段は第Ｓ図（Ｃ）（外径（
１／、内径（１４／の鋼管が出来る）の位置にセットし
、第２段は第Ｓ図（ｋｌ） （外径ｄ、２、内径ｄ＆の
鋼管が出来る）の位置にセットして、第３段は第Ｓ図（
Ｃ）の位置に戻す。この様な相互位置をとらせるのに、
（１）ダイスλを固定し、プラグ亭を第Ｓ図（Ｃ）位置
を基点とし、第２段はプラグｌを右へ移動し第左図（ｂ
）位置をとらせ、第３段は基点に戻す。（２）プラグ亭
を固定し、基点である第９図（Ｃ）位置より、ダイスコ
を左へ移動し、第５図（ｂ）位置をとらせ、次にダイス
コを戻し第５図（Ｑ）位置にセットする。使用する装置
の面では（１）ではダイス支持台は固定、プラグ支持台
は一同定点を持つ装置が必要であり、（２）ではプラグ
支持台は固定、ダイス支持台は一同定点を持つ装置が必
要である。Furthermore, in order to manufacture a steel pipe as shown in Fig. 3(f), the mutual positions of the die and the plug trough should be adjusted so that the first stage is as shown in Fig. S (C) (outer diameter (
Set the second stage to the position shown in Fig. S (kl) (produces a steel pipe with an outer diameter of d, 2, and an inner diameter of d&). The third row is Figure S (
Return to position C). To make them take such a mutual position,
(1) Fix the die λ, set the plug trough at the position shown in Fig. S (C), and move the plug l to the right in the second stage,
) position, and the third stage returns to the base point. (2) Fix the plug bow, move the dice to the left from the base point (C) in Figure 9, take the position in Figure 5 (b), then return the dice to the position in Figure 5 (Q). set in position. In terms of the equipment used, (1) requires a device that has a fixed die support and a single identified point for the plug support, while (2) requires a device that has a fixed plug support and a single identified point for the die support. is necessary.
尚３箇以上のベアリング面を持つダイスコとプラク＜＜
とについても同様の方法により、外径３箇以上、内径３
箇以上の鋼管の製造が可能となった。In addition, dies and plaques with three or more bearing surfaces<<
3 or more outer diameter and 3 inner diameter by the same method.
It became possible to manufacture more than 1,000 steel pipes.
また、第１図に示すような溶接して作った鋼管、或は鋳
造鋼管、旋削して作った鋼管と異り、引抜く・という製
造方法は製品鋼管の肉厚部の組織の繊維が鋼管軸方向に
連続して通っており、強靭である。用途により、製造し
た鋼管を、更に調質する必要のある場合は最適の鋼管を
提供することになる。In addition, unlike steel pipes made by welding, casting, or turning as shown in Figure 1, the manufacturing method of drawing allows the fibers in the structure of the thick part of the product steel pipe to It runs continuously in the axial direction and is strong. Depending on the application, if the manufactured steel pipe needs to be further tempered, the most suitable steel pipe will be provided.
上記の通り、複数のベアリング径を持つダイスとプラグ
とを引抜方向の正逆の方向に移動可能に固定し、夫々の
所要のベアリング部を選択して相対峙させ、夫々のベア
リング面で挾圧し乍ら引抜くことにより、所要な多種の
正確な径を持つ強靭な鋼管を製造する方法を提供するこ
とが出来た。As mentioned above, a die and a plug having multiple bearing diameters are fixed so as to be movable in the forward and reverse directions of the drawing direction, and the desired bearing portions of each are selected and placed facing each other, and the respective bearing surfaces are pressed together. However, by drawing, we have been able to provide a method for producing strong steel pipes with a wide variety of precise diameters as required.
第７図は製造鋼管の一例を示す縦断面図、第２図は従来
の鋼管引抜装置の側面図、第２図（ａ）は第一図Ａ部の
詳細を示す縦断面図、第３図、第グ図は従来の鋼管引抜
き方法を示す縦断面図、第Ｓ図（ａ）、第３図（ｂ）、
第Ｓ図（Ｃ）は本発明による引抜き方法を示す縦断面図
、第Ｓ図（ｄ）、第５図（ｅ）、第５図（ｆ）は本発明
による製造鋼管を例示する縦断面図である。
ユ・・ダイス り・・プラグ ｄ／、ａ、２．ｃ１３゜
ｄＪはダイスとプラグのベアリング径であり、かつ製造
鋼管の径でもある。
特許出願人 山和鋼管株式会社
代理人 新 井 −部
第１図
第２図
第２図（α）
第３図
第４図Fig. 7 is a longitudinal sectional view showing an example of manufactured steel pipe, Fig. 2 is a side view of a conventional steel pipe drawing device, Fig. 2(a) is a longitudinal sectional view showing details of section A in Fig. 1, and Fig. 3 , Fig. 3 is a vertical cross-sectional view showing the conventional steel pipe drawing method, Fig. S (a), Fig. 3 (b),
Fig. S (C) is a longitudinal cross-sectional view showing the drawing method according to the present invention, and Fig. S (d), Fig. 5 (e), and Fig. 5 (f) are longitudinal cross-sectional views illustrating the manufactured steel pipe according to the present invention. It is. U... Dice Ri... Plug d/, a, 2. c13°dJ is the bearing diameter of the die and plug, and is also the diameter of the manufactured steel pipe. Patent Applicant Yamawa Kokan Co., Ltd. Agent Arai - Department Figure 1 Figure 2 Figure 2 (α) Figure 3 Figure 4
Claims (1)
ベアリング面とを管引抜方向に於て正逆の方向に移動し
て、ダイスのベアリング面とプラグのベアリング面とを
夫々相対峙せしめ、ダイスのベアリング面とプラグのベ
アリング面との間に素材管を挟圧引抜きすることのみに
より複数の外径と複数の内径を有する引抜き管を製造す
る方法。/ Move the bearing surfaces of the plurality of cylinders of the die and the bearing surfaces of the plurality of cylinders of the plug in the forward and reverse directions in the tube drawing direction so that the bearing surfaces of the die and the bearing surface of the plug face each other, and A method of manufacturing a drawn pipe having a plurality of outer diameters and a plurality of inner diameters by simply drawing the material pipe under pressure between the bearing surface of the plug and the bearing surface of the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18264082A JPS5973113A (en) | 1982-10-18 | 1982-10-18 | Manufacture of drawn pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18264082A JPS5973113A (en) | 1982-10-18 | 1982-10-18 | Manufacture of drawn pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5973113A true JPS5973113A (en) | 1984-04-25 |
| JPH0244603B2 JPH0244603B2 (en) | 1990-10-04 |
Family
ID=16121829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18264082A Granted JPS5973113A (en) | 1982-10-18 | 1982-10-18 | Manufacture of drawn pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5973113A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649728A (en) * | 1985-04-23 | 1987-03-17 | The Babcock & Wilcox Company | Integral joint forming of work-hardenable high alloy tubing |
| JP2008520440A (en) * | 2004-11-20 | 2008-06-19 | ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for shrinking a tube along a stepped mandrel to produce a tube shaft with an undercut in one process |
| US8210017B2 (en) | 2009-08-28 | 2012-07-03 | Sanwa Kokan Co., Ltd | Steel pipe drawing apparatus and drawn steel pipe manufacturing method |
| WO2014104371A1 (en) * | 2012-12-27 | 2014-07-03 | 三菱アルミニウム株式会社 | Pipe with spirally grooved inner surface, method for manufacturing same, and heat exchanger |
| JP2014140897A (en) * | 2012-12-27 | 2014-08-07 | Mitsubishi Alum Co Ltd | Tube with spiral groove on inner surface, manufacturing method therefor, and heat exchanger |
-
1982
- 1982-10-18 JP JP18264082A patent/JPS5973113A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649728A (en) * | 1985-04-23 | 1987-03-17 | The Babcock & Wilcox Company | Integral joint forming of work-hardenable high alloy tubing |
| JP2008520440A (en) * | 2004-11-20 | 2008-06-19 | ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for shrinking a tube along a stepped mandrel to produce a tube shaft with an undercut in one process |
| US8210017B2 (en) | 2009-08-28 | 2012-07-03 | Sanwa Kokan Co., Ltd | Steel pipe drawing apparatus and drawn steel pipe manufacturing method |
| WO2014104371A1 (en) * | 2012-12-27 | 2014-07-03 | 三菱アルミニウム株式会社 | Pipe with spirally grooved inner surface, method for manufacturing same, and heat exchanger |
| JP2014140897A (en) * | 2012-12-27 | 2014-08-07 | Mitsubishi Alum Co Ltd | Tube with spiral groove on inner surface, manufacturing method therefor, and heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0244603B2 (en) | 1990-10-04 |
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