JPS63313614A - Forming apparatus for electric resistance welded tube - Google Patents
Forming apparatus for electric resistance welded tubeInfo
- Publication number
- JPS63313614A JPS63313614A JP14622887A JP14622887A JPS63313614A JP S63313614 A JPS63313614 A JP S63313614A JP 14622887 A JP14622887 A JP 14622887A JP 14622887 A JP14622887 A JP 14622887A JP S63313614 A JPS63313614 A JP S63313614A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- electric resistance
- circular arc
- resistance welded
- welded tube
- 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
- 230000015556 catabolic process Effects 0.000 claims abstract description 13
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 20
- 239000011324 bead Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は管厚の均一な厚肉の電縫管を製造する電縫管成
形装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric resistance welded tube forming apparatus for manufacturing a thick electric resistance welded tube having a uniform tube thickness.
成形過程の初期段階であるブレークダウンロールスタン
ドでは第５図に示すように素材エツジ部３１と、下ブレ
ークダウンロール１１と強接触で減肉が発生する。ここ
において１２は上ブレークダウンロールである。モして
減肉が発生することにより、素材エツジ部と下ブレーク
ダウンロールとは未接触となるため素材エツジ部の成形
が不充分となる。At the breakdown roll stand, which is the initial stage of the forming process, thinning occurs due to strong contact between the material edge 31 and the lower breakdown roll 11, as shown in FIG. Here, 12 is the top breakdown roll. As a result of thinning, the edge portion of the material is not in contact with the lower breakdown roll, resulting in insufficient shaping of the edge portion of the material.
また厚肉管の場合は管内外面の周長差が大きくなるため
、溶接直前の素材エツジ部の突合せ形状が理想的なＩ型
とならず、第６図のようなＶ型３２となり易く、このよ
うな状態で溶接すると第７図のように管内面に生ずるビ
ードが異常に大きくなり、ビード切削が困難になるほか
、溶接部の品質も悪くなる。In addition, in the case of thick-walled pipes, the difference in circumferential length between the inner and outer surfaces of the pipe is large, so the butt shape of the material edge immediately before welding does not become an ideal I-shape, but tends to become a V-shape 32 as shown in Figure 6. If welding is carried out under such conditions, the bead formed on the inner surface of the tube will become abnormally large as shown in FIG. 7, making it difficult to cut the bead, and the quality of the welded portion will also deteriorate.
かかる問題を解決するものとして特開昭５９−１２５２
８０がある。これはブレークダウンゾーンに続くフィン
パスロールのフィンの外面を膨出させて素材エツジの増
肉を計るものである。To solve this problem, Japanese Patent Application Laid-Open No. 59-1252
There are 80. This is to increase the thickness of the material edge by bulging the outer surface of the fin of the fin pass roll following the breakdown zone.
従来の電縫管製造装置で厚肉管を製造する場合ブレーク
ダウンロールスタンドで発生する素材工ツジの減肉およ
び、管内外面の周長差が大きくなるため素材エツジ部の
突合せ形状がＶ型となり易く、るそのために管内面に生
ずるビードが異常に大きくなるという問題点があった。When manufacturing thick-walled pipes using conventional ERW pipe manufacturing equipment, the material edges are thinned due to the break-down roll stand, and the difference in circumferential length between the inner and outer surfaces of the pipe becomes large, so the butt shape of the material edges becomes V-shaped. Therefore, there was a problem in that the bead formed on the inner surface of the tube became abnormally large.
本発明は上記のような問題点を解決しようとするもので
、電縫管を成形するブレークダウンゾーンのサイドロー
ルの１または２スタンド以上にサイドロールの側面形状
をロール底面から途中までをロール底面に鋭角をなす直
線で形成し、該直線の終点からロール上部フランジまで
を円弧で形成したサイドロールを設けたことにある。The present invention is an attempt to solve the above-mentioned problems.The present invention is aimed at solving the above-mentioned problems. The side roll is formed by a straight line forming an acute angle to the side roll, and the side roll is formed by an arc from the end point of the straight line to the roll upper flange.
本発明は、ブレークダウンロールスタンドで生ずる素材
エツジ部に生じた減肉部分をサイドロールスタンドで増
肉しようとするもので、以下本発明の実施例を図面に基
すいて説明する０本発明に使用するサイドロール２は第
２図のＡ部に特徴があり、ロール形状は第１図に示すよ
うにロールの底面２７から途中までを、ロール底面に鋭
角をなす直線２５で形成し、該直線の終点からロール上
部フランジ２日までを円弧２６で形成しである。ロール
の円弧部２６は素材エツジを増肉させる部分であり、上
流スタンドから本実施例の一対のサイドロール間に移動
してきた湾曲した素材のエツジはロールの直線部２５に
強く接触しつつ上方に案内されて円弧部２Ｂに至り第１
図に示すように強圧縮されて増肉される０強圧縮する部
位が円弧となっているので素材エツジは無理なく増肉さ
れる。しかし、従来のサイドロール２は第８図に示すよ
うにロールの側面２１が一つの円弧のみで形成されてい
るので、エツジを増肉する作用はない。The present invention aims to increase the thickness of the thinned portion of the material edge caused by the breakdown roll stand using a side roll stand. The side roll 2 to be used has a feature shown in part A in Fig. 2, and the roll shape is formed by a straight line 25 that forms an acute angle to the roll bottom from the bottom 27 of the roll to the middle, as shown in Fig. 1. An arc 26 is formed from the end point of the roll to the second roll upper flange. The arcuate portion 26 of the roll is a portion that increases the thickness of the edge of the material, and the edge of the curved material that has moved from the upstream stand between the pair of side rolls in this embodiment strongly contacts the straight portion 25 of the roll and moves upward. It is guided to the circular arc part 2B and the first
As shown in the figure, the part that is compressed by 0 or more and is thickened by strong compression is a circular arc, so the material edge is thickened without any difficulty. However, in the conventional side roll 2, as shown in FIG. 8, the side surface 21 of the roll is formed of only one circular arc, so there is no effect of thickening the edge.
本発明のサイドロールを設ける位置は、第３図のロール
配置では８Ｂ、Ｂ８の位置が好ましい、なを本発明のサ
イドロールの機能を充分発揮させるためには、スタンド
の剛性を充分にすること、上下ロールスタンドとサイド
ロールスタンドの間隔を極力短くして素材のスプリング
バックを防止すること、およびロール間隔調整を容易に
行えるようにすることが重要である。第４図は本発明の
サイドロールを第３図の８８の位置に使用して製造した
公称径７０φ、管肉厚１１ｍｍの断面形状を示す図であ
り、管の形状および肉厚が均一であることを示している
。The preferred position for installing the side rolls of the present invention is 8B and B8 in the roll arrangement shown in Figure 3.In order to fully utilize the function of the side rolls of the present invention, the stand must have sufficient rigidity. It is important to prevent springback of the material by making the distance between the upper and lower roll stands and the side roll stands as short as possible, and to easily adjust the roll distance. FIG. 4 is a diagram showing the cross-sectional shape of a tube with a nominal diameter of 70φ and a wall thickness of 11 mm manufactured using the side roll of the present invention at position 88 in FIG. 3, and the shape and wall thickness of the tube are uniform. It is shown that.
本発明は上記のように構成しであるからブレークダウン
ロールスタンドで発生する素材エツジの減肉部を増肉で
き、管内外面の周長差による素材エツジ部の突合せ形状
を理想的なＩ型にすることができるので、均一な肉厚の
厚肉管の製造が可能となる。Since the present invention is constructed as described above, it is possible to increase the thickness of the thinned part of the material edge that occurs in the breakdown roll stand, and the butt shape of the material edge part due to the difference in circumferential length between the inner and outer surfaces of the tube can be changed to an ideal I-shape. Therefore, it is possible to manufacture thick-walled pipes with uniform wall thickness.
第１図は、本発明のサイドロールの部分正面図、第２図
は本発明のサイドロールで素材を増肉成形している状態
図、第３図は本発明のブレークダウンゾーンのロールス
タンドの配列図、第４図は本発明の装置を使用して製造
された電縫厚肉鋼管の断面図、第５図は従来のブレーク
ダウンロールでの素材エツジの減肉を示す状態図、第６
図は従来の素材エツジが減肉のまま成形された場合の突
合せ部を示す図、第７図は、第６図の突合せ部を溶接し
た場合の管内面に生じたビードの状態を示す図、第８図
は従来のサイドロールの形状を示す部分正面図である。
ｌ・・・上、下ロール、２・・・サイドロール、３・・
・素材、２５・・・直線部、２８・・・円弧部、２８・
・・フランジ部、３２・・・突合せ部。Fig. 1 is a partial front view of the side roll of the present invention, Fig. 2 is a state diagram of the side roll of the present invention in which the material is thickened and formed, and Fig. 3 is a view of the roll stand of the breakdown zone of the present invention. Fig. 4 is a cross-sectional view of an electric resistance welded thick-walled steel pipe manufactured using the apparatus of the present invention, Fig. 5 is a state diagram showing thinning of the material edge with a conventional breakdown roll, and Fig. 6 is a diagram of the arrangement.
The figure shows a butt part when the conventional material edge is molded with reduced thickness, FIG. 7 shows the state of a bead formed on the inner surface of the tube when the butt part of FIG. 6 is welded, FIG. 8 is a partial front view showing the shape of a conventional side roll. l...Top, bottom roll, 2...side roll, 3...
・Material, 25... Straight line part, 28... Arc part, 28.
...Flange part, 32... Butt part.
Claims (1)
の１または２スタンド以上に、サイドロールの側面形状
をロール底面から途中までをロール底面に鋭角をなす直
線で形成し、該直線の終点からロール上部フランジまで
を円弧で形成したサイドロールを設けたことを特徴とす
る電縫管成形装置。On one or more stands of the side rolls in the breakdown zone where the ERW tube is formed, the side shape of the side rolls is formed by a straight line that makes an acute angle to the bottom of the roll from the bottom of the roll to the middle, and from the end of the straight line to the top of the roll. An electric resistance welded pipe forming device characterized by having side rolls formed in an arc up to the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14622887A JPH0815626B2 (en) | 1987-06-13 | 1987-06-13 | ERW pipe forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14622887A JPH0815626B2 (en) | 1987-06-13 | 1987-06-13 | ERW pipe forming equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63313614A true JPS63313614A (en) | 1988-12-21 |
| JPH0815626B2 JPH0815626B2 (en) | 1996-02-21 |
Family
ID=15403006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14622887A Expired - Fee Related JPH0815626B2 (en) | 1987-06-13 | 1987-06-13 | ERW pipe forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0815626B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009056487A (en) * | 2007-08-31 | 2009-03-19 | Nisshin Steel Co Ltd | Method and apparatus for manufacturing material having profile cross section |
-
1987
- 1987-06-13 JP JP14622887A patent/JPH0815626B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009056487A (en) * | 2007-08-31 | 2009-03-19 | Nisshin Steel Co Ltd | Method and apparatus for manufacturing material having profile cross section |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0815626B2 (en) | 1996-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6408498B1 (en) | Can end having a strengthened side wall and apparatus and method of making same | |
| US4305179A (en) | Hose clamp | |
| US3757413A (en) | Method of manufacturing sealing rings | |
| JPS63313614A (en) | Forming apparatus for electric resistance welded tube | |
| US3263053A (en) | Tube forming apparatus | |
| JPH0756085Y2 (en) | Welded pipe manufacturing equipment | |
| EP1018378A1 (en) | Pipe and molding equipment array and pipe molding method | |
| JPH02104419A (en) | Manufacture of welded pipe | |
| JPH0810879A (en) | Formation of pipe end and forming die used for it | |
| JPH09239438A (en) | Production of oval tube and roll forming device | |
| JP4442973B2 (en) | Steel pipe end expansion method | |
| JPH01309731A (en) | Method for forming resistance welded pipe | |
| JPH0489130A (en) | Production of electro-resistance-welded tube | |
| JP3214382B2 (en) | Seam guide roll for welding pipe production | |
| JPS55141323A (en) | Edge forming method in manufacturing electric resistance welded steel pipe | |
| JPS6410294B2 (en) | ||
| JPH02197329A (en) | Manufacturing equipment for welded pipe | |
| US362003A (en) | Blank for pipe-fittings | |
| SU385644A1 (en) | METHOD OF MANUFACTURE OF SPIRAL-AND-CONVENTIONAL PIPES OF BIG DIAMETER | |
| JPH0513005B2 (en) | ||
| JPH0367769B2 (en) | ||
| JPH1190527A (en) | Formation of electric welded tube | |
| JPS61165225A (en) | Forming device of electric welded pipe | |
| JP2596846Y2 (en) | Steel drums | |
| JPH01299785A (en) | Manufacture of electric resistance welded tube of small diameter and thick wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |