JP2745437B2 - A method of passing the end of a metal strip through a die for manufacturing a metal welded pipe - Google Patents
A method of passing the end of a metal strip through a die for manufacturing a metal welded pipeInfo
- Publication number
- JP2745437B2 JP2745437B2 JP8923091A JP8923091A JP2745437B2 JP 2745437 B2 JP2745437 B2 JP 2745437B2 JP 8923091 A JP8923091 A JP 8923091A JP 8923091 A JP8923091 A JP 8923091A JP 2745437 B2 JP2745437 B2 JP 2745437B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- tip
- slit
- die
- manufacturing
- 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
Landscapes
- Winding, Rewinding, Material Storage Devices (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、金属帯を連続的に管状
に形成しこの金属帯の突き合わされた両側縁を溶接して
主として肉厚ｔと外径Ｄとの比ｔ／Ｄが３〜２０％程度
の金属溶接管を製造する方法として金属溶接管製造用ダ
イスに穿設されている貫通穴に平板状の金属帯を通板さ
せることによって一挙に金属板を管状に形成する金属溶
接管の製造方法において、金属溶接管製造用ダイスへ金
属帯の先端部を容易にしかも確実に通板させることので
きる方法に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a method for forming a metal strip continuously into a tubular shape, and welding the butted two side edges of the metal strip so that the ratio t / D of the thickness t to the outer diameter D is 3 / mm. As a method of manufacturing a metal welded pipe of about 20%, a metal plate is formed into a tubular shape by passing a flat metal band through a through hole formed in a die for manufacturing a metal welded pipe. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a pipe, which can easily and reliably pass the tip of a metal strip to a die for manufacturing a metal welded pipe.
【０００２】[0002]
【従来の技術】金属帯をその幅方向に製品曲率に曲げて
管状に形成して金属溶接管Ｐを製造するには、従来、図
８に示す斜視図の如く多数のタンデムに配置されたカリ
バーを有するフォーミングロール又はケージロール10を
備えたロール成形機を用いて平板状の金属帯１を幅方向
に順次曲げ加工して管状に形成し、この管状に形成され
た金属帯１をシームガイドロール11及びスクイズロール
５により保持した状態で金属帯１の両側縁の突き合わせ
部をアーク溶接用トーチ４などにより突き合わせ溶接に
より接合する連続ラインにより製造するロールフォーミ
ング法が一般に実施されていた。2. Description of the Related Art In order to manufacture a metal welded pipe P by bending a metal strip into a product curvature in the width direction thereof to form a tubular shape, conventionally, as shown in FIG. 8, a plurality of calipers arranged in tandem as shown in a perspective view. The flat metal strip 1 is sequentially bent in the width direction using a roll forming machine provided with a forming roll or a cage roll 10 having a shape, and formed into a tubular shape. In general, a roll forming method in which a butt portion of both side edges of the metal strip 1 is held by a squeeze roll 5 and a continuous line in which a butt portion of the metal band 1 is joined by a butt welding with an arc welding torch 4 or the like is used.
【０００３】しかしながらこのような従来方法において
は、製造すべき金属溶接管Ｐの外径を変更する場合には
前記フォーミングロール又はケージロール10，更にはシ
ームガイドロール11及びスクイズロール５等のロール組
を製造すべき金属溶接管Ｐの外径に対応した所望の寸法
を有する各ロール組と交換しなければならないので、外
径１種類に対してロール組は少なくとも２０組以上存在
することからロール交換に多大の労力と長時間とを要す
るために設備の生産効率が低下するのであり、また製造
すべき金属溶接管Ｐの外径に対応した所望の寸法を有す
る各ロール組を準備しなければならないので経済的でな
いという欠点があった。However, in such a conventional method, when the outer diameter of the metal welded pipe P to be manufactured is changed, a roll set such as the forming roll or cage roll 10, a seam guide roll 11, and a squeeze roll 5 is used. Must be replaced with each set of rolls having desired dimensions corresponding to the outer diameter of the metal welded pipe P to be manufactured. This requires a great deal of labor and a long time, so that the production efficiency of the equipment is reduced. Further, it is necessary to prepare each roll set having desired dimensions corresponding to the outer diameter of the metal welded pipe P to be manufactured. There was a disadvantage that it was not economical.
【０００４】更に例えば肉厚ｔと外径Ｄとの比ｔ／Ｄが
３〜２０％程度であって外径が１０mm以下のような細い
金属溶接管を製造しようとすると、前記各ロール組の設
置位置，各ロール組のロールのそれぞれ対向する間隔，
各ロール組のロールの寸法等に非常に高い精度が要求さ
れるのであり、例えば各組の対向するロールにおいてそ
れぞれ対向するロールの間隔と同時に金属帯の通板方向
に対して前後及び上下に関しても正確な位置に設置しな
ければならないが、この位置から多少ズレた位置に偏心
した状態で設置され易いので、特に製造すべき金属溶接
管の外径が小さく金属帯の板厚が非常に薄い場合には対
向するロールがわずかに偏心した状態で設置されてもこ
のロールによって管状に形成した金属帯の両側縁の突き
合わせ部に段差を生じ、この段差を生じた状態の突き合
わせ部を溶接することになるので製造された金属溶接管
の断面形状が真円を成さず製品上の欠陥となる欠点があ
った。Further, for example, in order to manufacture a thin metal welded pipe in which the ratio t / D of the thickness t to the outer diameter D is about 3 to 20% and the outer diameter is 10 mm or less, the roll set of each roll set is required. Installation position, the distance between the opposing rolls in each roll set,
Extremely high precision is required for the dimensions of the rolls in each roll set, and for example, the distance between the opposing rolls in each set of rolls and the front and back and up and down with respect to the passing direction of the metal band at the same time. It must be installed at the correct position, but it is easy to install it in an eccentric position slightly shifted from this position, especially when the outer diameter of the metal welded pipe to be manufactured is small and the thickness of the metal strip is extremely thin Even if the opposing roll is installed with a slight eccentricity, a step is created at the butting part on both sides of the tubular metal band formed by this roll, and the butting part in the state where this step has occurred is welded. Therefore, there was a defect that the cross-sectional shape of the manufactured metal welded pipe did not form a perfect circle, resulting in a defect on the product.
【０００５】そこで本発明者らは上記従来技術の欠点を
解消して製造すべき金属溶接管の外径の変更に容易にし
かも安価に対応することができて、特に外径が１０mm以
下のように細い金属溶接管を簡単にしかも安価で確実に
製造することのできる金属溶接管の製造方法を提供すべ
く種々検討した結果、入側から出側に行くに従って直径
を小さくするテーパを付した部分を有する断面円形の貫
通穴が穿設されている金属溶接管製造用ダイスの貫通穴
に金属帯を貫通させれば、多数のロールを使用して徐々
に管状に形成しなくとも平板状の金属帯を一挙にその両
側縁を突き合わせた状態の管状に形成することができる
ので、この管状に形成された金属帯の両側縁の突き合わ
せ部を溶接することによって金属溶接管を製造する金属
溶接管の製造方法を特願平２−４９５４９号として提案
した。The present inventors have solved the above-mentioned disadvantages of the prior art and can easily and inexpensively cope with a change in the outer diameter of a metal welded pipe to be manufactured. As a result of various studies to provide a method for manufacturing a metal welded pipe capable of easily and inexpensively manufacturing a thin metal welded pipe, a tapered portion that decreases in diameter from the entry side to the exit side. If a metal band is passed through a through hole of a metal welding pipe manufacturing die in which a circular cross section having a through hole is formed, it is possible to use a large number of rolls to gradually form the metal into a flat plate-like metal. Since the band can be formed into a tubular shape in which both side edges are abutted at once, a metal welded tube for manufacturing a metal welded tube by welding the butted portions of both side edges of the metal band formed in this tubular shape. Production method It was proposed as Japanese Patent Application No. 2-49549.
【０００６】この金属溶接管の製造方法は、図５にその
断面図を示すように金属帯１の進行方向にすなわち入側
から出側に行くに従って直径を小さくするテーパを付し
た部分を有する断面円形の貫通穴３が穿設されている金
属溶接管製造用ダイス（以下単にダイスと言うことがあ
る）２を準備し、金属溶接管Ｐを製造するための通常の
冷間圧延された金属帯や、少なくとも片面を鏡面研摩や
ヘヤーライン研摩の如き研摩処理された金属帯や、少な
くとも片面をエッチング加工や化学発色加工やセラミッ
クコーティング加工やメッキ処理や塗装等の表面処理を
施された金属帯から成る平板状の金属帯１を図４に示す
ようにダイス２の貫通穴３に直径の大なる入側からテー
パを付した部分を経て入側より直径が小さな出側に向け
て貫通させることによって一挙にその両側縁を突き合わ
せた状態の管状に形成し、この突き合わされた両側縁を
スクイズロール５によって管状に保持した状態でアーク
溶接用トーチ４やレーザ溶接によってアーク溶接した
り、また図６に示す如く管状に形成された金属帯１の突
き合わせ部に対応させてダイス２の外周縁からダイス２
の同一直径区間3aに向けて貫通して穿設された溶接用貫
通孔７を通してレーザ溶接用のレーザ照射機６からレー
ザを照射してレーザ溶接することによって金属溶接管を
製造する方法である。FIG. 5 shows a sectional view of a method for manufacturing a metal welded pipe having a tapered portion whose diameter decreases in the traveling direction of the metal strip 1, that is, from the entry side to the exit side. A metal-welded tube manufacturing die (hereinafter, may be simply referred to as a die) 2 having a circular through-hole 3 formed therein is prepared, and a normal cold-rolled metal strip for manufacturing a metal-welded tube P is prepared. Or at least one side from a metal band that has been polished such as mirror polishing or hairline polishing, or at least one side has been subjected to a surface treatment such as etching, chemical coloring, ceramic coating, plating, or painting. As shown in FIG. 4, the flat metal strip 1 is made to pass through the through hole 3 of the die 2 through the tapered portion from the entrance side having a larger diameter toward the exit side having a smaller diameter than the entrance side. Accordingly, the two side edges are formed into a tubular shape in a state where the two side edges are abutted at once, and the abutted both side edges are held in a tubular shape by the squeeze roll 5 and arc welding is performed by an arc welding torch 4 or laser welding. As shown in the figure, the outer peripheral edge of the die 2 corresponds to the abutting portion of the metal strip 1 formed in a tubular shape.
In this method, a metal welding pipe is manufactured by irradiating a laser from a laser irradiator 6 for laser welding through a welding through hole 7 pierced through the same diameter section 3a to perform laser welding.
【０００７】そしてこの金属溶接管の製造方法は、管の
内側となる面を内側として長手方向に直交する小径の曲
げロール８で塑性曲げ加工を行った金属帯１を長手方向
の曲率を零とすることによってその塑性曲げ・曲げ戻し
により生じる幅方向の残留曲率を利用して金属帯１を幅
方向に或る程度曲げた状態でダイス２の貫通穴３に貫通
させることが管状への成形を確実に実施できるので望ま
しく、その方法としては例えば図６に示した如く、入側
の円筒形ロール９とその軸が入側の円筒形ロール９と互
いに平行で且つ入側の円筒形ロール９との間にギャップ
を設けて配設され入側の円筒形ロール９と同方向に回転
する出側の円筒形ロール９とこれら円筒形ロール９，９
に近接してこの円筒形ロール９の軸と平行に配置された
小径の曲げロール８とから成るロール群に、金属帯１を
先ず入側の円筒形ロール９に沿わせてからギャップを通
した後に小径の曲げロール８に沿わせて曲げてから再び
ギャップを通して長手方向の曲率を零とすることによっ
て、その塑性曲げ・曲げ戻しにより生じる幅方向の残留
曲率を利用して金属帯１を幅方向に或る程度曲げた状態
でダイス２の貫通穴３に貫通させるのである。In this method of manufacturing a metal welded pipe, the metal strip 1 which has been subjected to plastic bending with a small-diameter bending roll 8 perpendicular to the longitudinal direction with the inner side of the pipe as the inner side has a longitudinal curvature of zero. By making use of the residual curvature in the width direction caused by the plastic bending and unbending, the metal band 1 is passed through the through hole 3 of the die 2 while being bent to some extent in the width direction. As shown in FIG. 6, for example, as shown in FIG. 6, it is desirable that the cylindrical roll 9 on the entrance side and the axis thereof are parallel to the cylindrical roll 9 on the entrance side and the cylindrical roll 9 on the entrance side. And a cylindrical roll 9 on the output side, which is disposed with a gap therebetween and rotates in the same direction as the cylindrical roll 9 on the input side, and these cylindrical rolls 9, 9
The metal strip 1 was first passed along the cylindrical roll 9 on the entry side and then passed through a gap through a roll group consisting of a small-diameter bending roll 8 arranged in parallel with the axis of the cylindrical roll 9 in close proximity to. Later, the metal strip 1 is bent along the small-diameter bending roll 8, and the curvature in the longitudinal direction is reduced to zero again through the gap. Then, it is made to penetrate through the through hole 3 of the die 2 while being bent to some extent.
【０００８】かかる金属溶接管の製造方法を実施するた
めには、先ず金属帯１の先端をダイス２の入側から出側
に行くに従って直径を小さくするテーパを付した部分を
有する断面円形の貫通穴３に通板させる作業が必要であ
り、この金属帯１の先端の通板は図７に示すように金属
帯１の先端を先細り状に切断加工してダイス２の貫通穴
３の最小直径よりも小さな直径の鋼線12にＴＩＧ溶接な
どで固着させてこの鋼線12からダイス２の貫通穴３に通
板させることによって行っていた。In order to carry out such a method for manufacturing a metal welded pipe, first, the tip of the metal strip 1 has a circular cross section having a tapered portion that decreases in diameter from the entry side to the exit side of the die 2. It is necessary to pass through the hole 3. The leading end of the metal band 1 is cut into a tapered shape as shown in FIG. This is performed by fixing the steel wire 12 having a smaller diameter by TIG welding or the like and passing the steel wire 12 through the through hole 3 of the die 2.
【０００９】しかしながら、この方法は金属帯１の先端
を先細り状に切断加工する作業とその先細り状に切断加
工された金属帯１の先端を小さな直径の鋼線12に固着さ
せる作業とを必要とするため、作業が煩雑で且つ溶接等
の固着作業に時間を要し、また固着が充分に行われてい
ないとダイス２の貫通穴３に挿入貫通させる作業中に固
着部分が外れてしまう現象が発生するという問題点や、
金属帯１の先端の断面積が先端に行くに従って減少して
いるために小さな直径の鋼線12を介して金属帯１を引張
った際に金属帯１が破断するという問題点があった。However, this method requires an operation of cutting the tip of the metal strip 1 into a tapered shape and an operation of fixing the tip of the metal strip 1 cut into the tapered shape to the steel wire 12 having a small diameter. Therefore, the work is complicated and it takes time for fixing work such as welding, and if the fixing is not sufficiently performed, the fixed portion may come off during the work of inserting and penetrating the through hole 3 of the die 2. Problems that occur,
Since the cross-sectional area of the tip of the metal strip 1 decreases toward the tip, there is a problem that the metal strip 1 is broken when the metal strip 1 is pulled through the steel wire 12 having a small diameter.
【００１０】[0010]
【発明が解決しようとする課題】本発明は、上記従来技
術の問題点を解消して、複雑な加工を行うことなく金属
帯の先端を容易に且つ確実に金属溶接管製造用ダイスの
貫通穴に通板させることのできる金属溶接管製造用ダイ
スへの金属帯先端部の通板方法を提供することを課題と
する。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and easily and reliably inserts a through-hole of a die for manufacturing a metal welded pipe without performing complicated processing. It is an object of the present invention to provide a method of passing a metal band tip portion to a die for manufacturing a metal welded pipe, which can be passed through the die.
【００１１】[0011]
【課題を解決するための手段】本発明者等はかかる課題
を解決すべく種々検討した結果、平板状の金属帯の先端
を金属帯の長手方向と平行に所定幅で所定長さ以上に多
条にスリットし、このスリット部分の先端を集束させて
この集束部分から金属溶接管製造用ダイスの貫通穴に挿
入貫通させて貫通した先端部を把持して引張れば良いこ
とを究明して本発明を完成したのである。The inventors of the present invention have made various studies to solve the above-mentioned problems. As a result, the leading end of the flat metal band is extended to a predetermined width and a predetermined length or more in parallel with the longitudinal direction of the metal band. After slitting the end of the slit, focusing the tip of this slit, inserting it into the through hole of the die for manufacturing a metal welded pipe from this focused part, and grasping and pulling the penetrated tip, the book The invention was completed.
【００１２】以下、図面により本発明に係る金属溶接管
製造用ダイスへの金属帯先端部の通板方法について詳細
に説明する。図１は本発明方法によって金属溶接管製造
用ダイスへ金属帯先端部を挿入貫通させた状態を示す斜
視図、図２は図１に示した金属帯先端部を形成するため
に金属帯の先端を多条にスリットした状態の１例を示す
平面説明図、図３は図２に相当する他の例の平面説明図
である。Hereinafter, a method for passing the tip of a metal band through a die for manufacturing a metal welded pipe according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a state in which the tip of a metal band is inserted through a die for manufacturing a metal welded pipe by the method of the present invention, and FIG. 2 is a tip of the metal band for forming the tip of the metal band shown in FIG. FIG. 3 is an explanatory plan view showing an example of a state in which the slits are slit in multiple lines, and FIG. 3 is an explanatory plan view of another example corresponding to FIG.
【００１３】本発明方法を実施するには、先ず平板状の
金属帯１の先端を金属帯１の長手方向と平行に所定幅Ｗ
で所定長さＬ以上に多条にスリットして、このスリット
部分1aの先端を集束させ、好ましくはこの集束部分がバ
ラケないようにクランプ材1cによりクランプする。この
スリットする幅Ｗは、余り狭過ぎるとこのスリット部分
1aの先端を集束させる際に各条のスリット部分1aが捻れ
て破損したりまた各条のスリット部分1aの断面積が小さ
いためにスリット部分1aの端末の応力集中により引張ら
れた際にスリット部分1aの端末で破断する危険性が高
く、また余り広過ぎるとこのスリットされたスリット部
分1aの先端を集束させた際にその集束部分の最大幅がダ
イス２の貫通穴３の最小径よりも大きくなってダイス２
の貫通穴３に挿入貫通させることができないので、その
金属帯１の材質や板厚や製造すべき金属溶接管Ｐの直径
等を勘案して適切に決定する。また、このスリットする
長さは、多条にスリットされたスリット部分1aの先端を
集束させる際に各条のスリット部分1aに無理な変形が生
じず且つスリットが設けられていない部分からクランプ
部分にかけて全体が滑らかに変形していくだけの所定長
さＬ以上でなければならず、この所定長さＬも金属帯１
の材質や板厚や製造すべき金属溶接管Ｐの直径や前記ス
リット幅Ｗ等を勘案して適切に決定する。In order to carry out the method of the present invention, first, the front end of the flat metal strip 1 is set to a predetermined width W in parallel with the longitudinal direction of the metal strip 1.
The slit is formed into a plurality of slits longer than a predetermined length L, and the tip of the slit portion 1a is focused. Preferably, the slit portion 1a is clamped by the clamp material 1c so that the focused portion does not vary. If this slit width W is too small,
When the tip of 1a is converged, the slit portion 1a of each strip is twisted and broken, and also because the cross-sectional area of the slit section 1a of each strip is small, the slit section is pulled by the stress concentration at the end of the slit section 1a. The risk of breaking at the end of 1a is high, and if it is too wide, the maximum width of the converged portion when the tip of this slit portion 1a is converged is larger than the minimum diameter of the through hole 3 of the die 2. Become dice 2
Cannot be inserted and penetrated into the through hole 3 of the metal strip 1, and is appropriately determined in consideration of the material and thickness of the metal strip 1, the diameter of the metal welded pipe P to be manufactured, and the like. In addition, the length of the slit, from the portion where the slit portion 1a of each strip is not deformed unnaturally and the slit is not provided to the clamp portion when the tip of the slit portion 1a slit in multiple strips is focused. The predetermined length L must be equal to or longer than the predetermined length L to allow the whole to be smoothly deformed.
Is appropriately determined in consideration of the material and thickness of the metal pipe, the diameter of the metal welded pipe P to be manufactured, the slit width W, and the like.
【００１４】このように、平板状の金属帯１の先端を金
属帯１の長手方向と平行に所定幅Ｗで所定長さＬ以上に
多条にスリットするに際し、多条にスリットする所定長
さＬは例えば専用のスリッティング装置を使用して図２
に示すように総て同一となるようにスリットするのが実
施が容易で好ましいが、この場合にはスリット幅が狭い
と引張られた際にスリット部分1aのスリット端末の応力
集中によりスリット部分1aのスリット端末で破断する危
険性がある。この危険性を解消する方法として、図３に
示すようにスリット長さが総て同一とならないようにス
リットする方法や、更にスリットされたスリット部分1a
のスリット端末に応力集中防止用の丸孔1bを穿設してお
く方法が採用できる。As described above, when the front end of the flat metal strip 1 is slit into a plurality of strips having a predetermined width W and a predetermined length L or more in parallel with the longitudinal direction of the metal strip 1, the predetermined length of the slits is determined. L is, for example, shown in FIG. 2 using a dedicated slitting device.
It is easy and preferable to perform slitting so that they are all the same as shown in Fig. 5, but in this case, when the slit width is narrow, the tension of the slit portion 1a due to the stress concentration at the slit terminal of the slit portion 1a when the slit portion 1a is pulled. There is a risk of breaking at the slit end. As a method of eliminating this danger, a method of slitting so that the slit lengths are not all the same as shown in FIG.
A method can be adopted in which a round hole 1b for preventing stress concentration is formed in the slit terminal.
【００１５】かくしてスリット部分1aの先端を集束さ
せ、好ましくはクランプ材1cによりクランプしたら、こ
の集束部分から金属帯１を金属溶接管製造用ダイス２の
貫通穴３に挿入貫通させて貫通した先端部を引取り装置
で把持して引張って通板を完了させるのである。After the tip of the slit portion 1a is thus focused and preferably clamped by the clamp material 1c, the metal band 1 is inserted through the through-hole 3 of the die 2 for manufacturing a metal welded pipe from the focused portion and penetrated. Is gripped by the take-up device and pulled to complete the threading.
【００１６】[0016]
【作用】このように平板状の金属帯１の先端を金属帯１
の長手方向と平行に所定幅Ｗで所定長さＬ以上に多条に
スリットし、このスリット部分1aの先端を集束させてこ
の集束部分から金属帯１を金属溶接管製造用ダイス２の
貫通穴３に挿入貫通させて貫通した先端部を引取り装置
で把持して引張ると、金属帯１はそのスリット部分1a全
体の断面積がスリットの設けられていない部分と比較し
てあまり差が存在しておらず且つ各条のスリット部分1a
は金属帯１のスリットの設けられていない部分と比較し
てその幅が狭いために容易に変形できるために、その先
端を集束させてもその強度が大幅に低下することがない
ため、金属溶接管製造用ダイス２の貫通孔３に金属帯１
の先端部を挿入貫通させて強く引張って通板させても破
損することがないのである。In this way, the tip of the flat metal band 1 is
In parallel with the longitudinal direction, a plurality of slits having a predetermined width W and a predetermined length L or more are formed. The tip of the slit portion 1a is focused, and the metal band 1 is formed from the focused portion into a through hole of a metal welded pipe manufacturing die 2. When the metal strip 1 is gripped and pulled by the take-off device, the cross-sectional area of the entire slit portion 1a of the metal strip 1 is much smaller than that of the portion where no slit is provided. And the slit part 1a of each strip
Can be easily deformed because its width is narrower than that of the metal strip 1 where no slit is provided. Therefore, even if the tip is focused, its strength does not decrease significantly. Metal band 1 in through hole 3 of die 2 for pipe production
No damage is caused even if the distal end of the wire is inserted and penetrated and pulled strongly through the board.
【００１７】[0017]
【実施例】入側直径35mm，出側直径10mm，テーパ角度22
°の貫通穴を穿設されている炭素工具鋼SK5製の金属溶
接管製造用ダイスの前記貫通穴に、板厚１mm，板幅31mm
の平板状のオーステナイト系ステンレス鋼帯（ＳＵＳ３
０４）を貫通させて管状に形成してその両側縁の突き合
わせ部をＴＩＧ溶接して外径10mmのステンレス鋼溶接管
を製造するに際し、オーステナイト系ステンレス鋼帯の
先端をその鋼帯の長手方向と平行に５mm幅で長さ200mm
に多条にスリットし、このスリット部分の先端を集束さ
せて、この集束部分からオーステナイト系ステンレス鋼
帯を金属溶接管製造用ダイスの貫通穴に挿入貫通させ、
その貫通させた部分を引取り装置で把持して引張ってオ
ーステナイト系ステンレス鋼帯の先端部をダイスに通板
せしめる作業を行った処、オーステナイト系ステンレス
鋼帯はその先端部もまたスリットが設けられていない部
分もいずれも何等の損傷が発生せず極めて短時間に良好
に通板が完了した。[Example] Inlet diameter 35mm, outlet side diameter 10mm, taper angle 22
1mm thickness and 31mm width in the through hole of the die for manufacturing metal welded pipe made of carbon tool steel SK5, which has a through hole of
Flat austenitic stainless steel strip (SUS3
04) is formed into a tubular shape, and the butted portions on both side edges thereof are TIG-welded to produce a stainless steel welded tube having an outer diameter of 10 mm. When manufacturing a stainless steel welded tube, the tip of the austenitic stainless steel strip is aligned with the longitudinal direction of the steel strip. Parallel 5mm wide and 200mm long
Into a multi-strip, the tip of this slit portion is focused, and from this focused portion, the austenitic stainless steel strip is inserted and penetrated into the through hole of the die for manufacturing a metal welded pipe,
The austenitic stainless steel strip was also provided with a slit at the tip, where the penetrated part was gripped and pulled by a take-off device and the tip of the austenitic stainless steel strip was passed through a die. The threading was completed in a very short time without any damage on any of the parts that were not.
【００１８】[0018]
【発明の効果】以上詳述した如く本発明に係る金属溶接
管製造用ダイスへの金属帯先端部の通板方法は、平板状
の金属帯の先端を金属帯の長手方向と平行に所定幅で所
定長さ以上に多条にスリットし、このスリット部分の先
端を集束させてこの集束部分から金属帯を金属溶接管製
造用ダイスの貫通穴に挿入貫通させて貫通した先端部を
把持して引張るという非常に単純な作業で金属溶接管製
造用ダイスへの金属帯先端部の通板を行う方法であり、
金属帯への加工は平板状の金属帯の先端を金属帯の長手
方向と平行に所定幅で所定長さ以上に多条にスリットし
てこのスリット部分の先端を集束させて、更に必要に応
じてクランプ材によりクランプするという極めて単純で
容易な作業だけであり、金属溶接管製造用ダイスの貫通
穴に挿入貫通される金属帯の先端はその断面積がスリッ
トの設けられていない部分と殆ど変わらないから強度的
な問題が無いと共に、金属帯の先端はスリットが設けら
れているために金属溶接管製造用ダイスの貫通穴に挿入
貫通できる大きさに容易に変形できるという利点もあ
り、その工業的価値は非常に大きなものである。As described in detail above, the method of passing the leading end of a metal band through a die for manufacturing a metal welded pipe according to the present invention is characterized in that the leading end of a flat metal band is formed with a predetermined width parallel to the longitudinal direction of the metal band. Slit it in multiple strips over a predetermined length, converge the tip of this slit part, insert the metal band from this converged part into the through hole of the die for manufacturing a metal welded pipe, penetrate and grasp the penetrated tip part It is a method of passing the tip of the metal band to the metal welding pipe manufacturing die with a very simple work of pulling,
For processing into a metal strip, the tip of a flat metal strip is slit into multiple strips with a predetermined width and a predetermined length or more in parallel with the longitudinal direction of the metal strip, and the tip of this slit portion is converged. It is only an extremely simple and easy operation of clamping with a clamp material, and the tip of the metal band inserted and penetrated into the through hole of the metal welding pipe manufacturing die has almost the same cross-sectional area as the part without slits. Since there is no problem in strength, there is also an advantage that the end of the metal strip can be easily deformed to a size that can be inserted and penetrated into a through hole of a die for manufacturing a metal welded pipe because the slit is provided. The target value is very large.
【図１】本発明方法によって金属溶接管製造用ダイスへ
金属帯の先端部を挿入貫通させた状態を示す斜視図であ
る。FIG. 1 is a perspective view showing a state in which a tip end of a metal band is inserted and penetrated into a die for manufacturing a metal welded pipe by the method of the present invention.
【図２】図１に示した金属帯の先端部を形成するために
金属帯の先端を多条にスリットした状態の１例を示す平
面説明図である。FIG. 2 is an explanatory plan view showing an example of a state in which the distal end of the metal band is slit in multiple stripes to form the distal end portion of the metal band shown in FIG. 1;
【図３】図３は図２に相当する他の例の平面説明図であ
る。FIG. 3 is an explanatory plan view of another example corresponding to FIG. 2;
【図４】金属溶接管の製造方法の側面説明図である。FIG. 4 is a side view illustrating a method for manufacturing a metal welded pipe.
【図５】金属溶接管の製造方法で使用するダイスの１例
の縦断面図である。FIG. 5 is a longitudinal sectional view of one example of a die used in the method for manufacturing a metal welded pipe.
【図６】金属溶接管の製造方法の好ましい実施例を示す
図である。FIG. 6 is a view showing a preferred embodiment of a method for manufacturing a metal welded pipe.
【図７】金属帯の先端に鋼線を固着させた従来方法を示
す斜視図である。FIG. 7 is a perspective view showing a conventional method in which a steel wire is fixed to the tip of a metal strip.
【図８】従来方法によって金属溶接管を製造している状
態を示す斜視図である。FIG. 8 is a perspective view showing a state where a metal welded pipe is manufactured by a conventional method.
１ 金属帯 1a スリット部分 1b 丸孔 1c クランプ材 ２ 金属溶接管製造用ダイス ３ 貫通穴 3a 同一直径区間 ４ アーク溶接用トーチ ５ スクイズロール ６ レーザ照射機 ７ 溶接用貫通孔 ８ 小径の曲げロール ９ 円筒形ロール 10 フォーミングロール又はケージロール 11 シームガイドロール 12 鋼線 Ｐ 金属溶接管 DESCRIPTION OF SYMBOLS 1 Metal strip 1a Slit part 1b Round hole 1c Clamping material 2 Die for manufacturing metal welding pipe 3 Through hole 3a Same diameter section 4 Arc welding torch 5 Squeeze roll 6 Laser irradiation machine 7 Welding through hole 8 Small diameter bending roll 9 Cylinder Form roll 10 Forming roll or cage roll 11 Seam guide roll 12 Steel wire P Metal welded pipe
Claims (5)
の長手方向と平行に所定幅(Ｗ)で所定長さ(Ｌ)以上に多
条にスリットし、このスリット部分(1a)の先端を集束さ
せて、この集束部分から金属帯(１)を金属溶接管製造用
ダイス(２)の貫通穴(３)に挿入貫通させて貫通した先端
部を把持して引張ることを特徴とする金属溶接管製造用
ダイスへの金属帯先端部の通板方法。1. A tip of a flat metal strip (1) is connected to a metal strip (1).
In parallel with the longitudinal direction of the above, a multiplicity of slits having a predetermined width (W) and a predetermined length (L) or more are formed, and the tip of the slit portion (1a) is focused. A method of passing a metal band tip through a die for manufacturing a metal welded pipe, wherein the tip is inserted into and penetrated into a through hole (3) of a welded pipe manufacturing die (2), and is gripped and pulled.
の長手方向と平行に多条にスリットする所定長さ(Ｌ)が
総て同一となるようにスリットする請求項１に記載の金
属溶接管製造用ダイスへの金属帯先端部の通板方法。2. The tip of a flat metal strip (1) is connected to the metal strip (1).
The method for passing a metal band tip through a die for manufacturing a metal welded pipe according to claim 1, wherein the slits are slit so that the predetermined lengths (L) of slitting in multiple rows in parallel with the longitudinal direction are all the same.
の長手方向と平行に多条にスリットするスリット長さが
総て同一とならないようにスリットする請求項１に記載
の金属溶接管製造用ダイスへの金属帯先端部の通板方
法。3. The tip of a flat metal strip (1) is connected to the metal strip (1).
2. The method of passing a metal band tip through a die for manufacturing a metal welded pipe according to claim 1, wherein the slit is slit so that the slit lengths slit in multiple rows in parallel with the longitudinal direction are not all the same.
ットされたスリット部分(1a)のスリット端末に応力集中
防止用の丸孔(1b)を穿設しておく請求項２又は３に記載
の金属溶接管製造用ダイスへの金属帯先端部の通板方
法。4. A round hole (1b) for preventing stress concentration is formed at a slit end of a slit portion (1a) slit at a tip end of a flat metal strip (1). Or the method of passing the tip of a metal band through a die for manufacturing a metal welded pipe according to item 3.
ットされたスリット部分(1a)の先端の集束部分をクラン
プ材(1c)によりクランプしておいて、このクランプ部分
から金属帯(１)を金属溶接管製造用ダイス(２)の貫通穴
(３)に挿入貫通させる請求項１から４までのいずれか１
項に記載の金属溶接管製造用ダイスへの金属帯先端部の
通板方法。5. A convergence portion at the tip of a multi-slit slit portion (1a) at the tip of a flat metal strip (1) is clamped by a clamp material (1c), and metal is removed from the clamp portion. The belt (1) is inserted into the through hole of the die (2) for manufacturing a metal welded pipe.
5. Any one of claims 1 to 4, wherein the component is inserted through (3).
4. A method for passing a metal band tip through a die for producing a metal welded pipe according to the above item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8923091A JP2745437B2 (en) | 1991-03-29 | 1991-03-29 | A method of passing the end of a metal strip through a die for manufacturing a metal welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8923091A JP2745437B2 (en) | 1991-03-29 | 1991-03-29 | A method of passing the end of a metal strip through a die for manufacturing a metal welded pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04305313A JPH04305313A (en) | 1992-10-28 |
| JP2745437B2 true JP2745437B2 (en) | 1998-04-28 |
Family
ID=13964949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8923091A Expired - Lifetime JP2745437B2 (en) | 1991-03-29 | 1991-03-29 | A method of passing the end of a metal strip through a die for manufacturing a metal welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2745437B2 (en) |
-
1991
- 1991-03-29 JP JP8923091A patent/JP2745437B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04305313A (en) | 1992-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5456405A (en) | Dual bias weld for continuous coiled tubing | |
| DE19757888A1 (en) | Method and device for producing stents | |
| US20150290743A1 (en) | Device and method for separating a longitudinally-extended cylindrical workpiece | |
| EP2740417B1 (en) | Method for manufacturing eyeless suture needle | |
| JP2745437B2 (en) | A method of passing the end of a metal strip through a die for manufacturing a metal welded pipe | |
| EP3797890B1 (en) | Method for the production of thin-walled hollow profiles with small diameters made from non-ferrous metals | |
| DE4411246C2 (en) | Connection end for winding hoses | |
| EP1230995B1 (en) | Procedure and device for the fabrication of tubes with longitudinally welded seam | |
| US6688513B2 (en) | Process for producing longitudinally welded tubes | |
| JPH06335723A (en) | Passing method for tip part of strip metal to metallic welded tube manufacturing die | |
| JPH05277559A (en) | Correcting method for welded metallic tube | |
| JP2640541B2 (en) | Method of manufacturing thin metal tube | |
| JP2790887B2 (en) | Manufacturing method of metal welded pipe | |
| EP1260301A2 (en) | Welding connection manufacturing method | |
| JP3759008B2 (en) | Welding method of cylindrical body | |
| SE8902961L (en) | SET TO MANUFACTURE THIN-WALL METAL ROWS | |
| CN111936406B (en) | Wire guide nozzle and wire winding device | |
| JPH06170439A (en) | Tubular forming die in welded tube production | |
| JPH02112820A (en) | Production of electrode wire for wire cut electric discharge machine | |
| JP3461025B2 (en) | Manufacturing method of welding tip | |
| JPH05115994A (en) | Wire for welding or thermal spraying | |
| JPH0120922B2 (en) | ||
| JP2000233288A (en) | Welding method for steel strip | |
| JP2001239314A (en) | Method and apparatus of manufacturing weld pipe | |
| JP2904996B2 (en) | Manufacturing method of metal welded pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980113 |