JP2881273B2 - Manufacturing method of surface treated steel pipe - Google Patents
Manufacturing method of surface treated steel pipeInfo
- Publication number
- JP2881273B2 JP2881273B2 JP10902792A JP10902792A JP2881273B2 JP 2881273 B2 JP2881273 B2 JP 2881273B2 JP 10902792 A JP10902792 A JP 10902792A JP 10902792 A JP10902792 A JP 10902792A JP 2881273 B2 JP2881273 B2 JP 2881273B2
- Authority
- JP
- Japan
- Prior art keywords
- strip
- treated steel
- steel pipe
- manufacturing
- cut
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、表面処理鋼管の製造方
法に関する。The present invention relates to a method for producing a surface-treated steel pipe.
【０００２】[0002]
【従来の技術】最近では、鋼管の耐食性向上を目的とし
て、亜鉛，銅，アルミニウム等をメッキした鋼板から直
接に電縫鋼管を製造する方法が一般的である。2. Description of the Related Art In recent years, in order to improve the corrosion resistance of a steel pipe, a method of manufacturing an electric resistance welded steel pipe directly from a steel sheet plated with zinc, copper, aluminum or the like is generally used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この種
のメッキ層の金属が溶接接合面または熱影響部に存在す
ると、溶接欠陥または液体金属脆化の原因となってい
た。However, if the metal of this type of plating layer is present on the weld joint surface or the heat affected zone, it has caused welding defects or liquid metal embrittlement.
【０００４】本発明は上記課題を解決し、メッキなどを
施した表面処理鋼板のストリップから、連続して溶接鋼
管を製造するのに際し、溶接欠陥の防止と、余裕ビード
からの液体金属脆化防止を可能とした製造方法を提供す
ることを目的とする。The present invention solves the above-mentioned problems, and prevents welding defects and prevents liquid metal embrittlement from excess beads when continuously manufacturing welded steel pipes from strips of a surface-treated steel sheet subjected to plating. It is an object of the present invention to provide a manufacturing method that enables the above.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明の構成は次のとおりとする。即ち、表面処理
鋼板ストリップのコイルから、ストリップを水平に展延
した状態で繰り出しながら、該ストリップの進行経路の
一定区間において、該ストリップを上下からパッドで挟
み、左右から案内ロ−ラで挟み、該ストリップの左右端
部の端面を切削し、左右端部の上面および下面の溶接部
近傍の範囲を処理層に相当する深さで切削し、その後、
成型ロ−ル群で徐々に管状に成型し、前記左右端部の突
き合わせ部を溶接することである。Means for Solving the Problems In order to solve the above problems, the constitution of the present invention is as follows. That is, from a coil of the surface-treated steel sheet strip, while the strip is unreeled in a horizontally extended state, in a certain section of the traveling path of the strip, the strip is sandwiched by pads from above and below, and sandwiched by guide rollers from left and right, The end surfaces of the left and right end portions of the strip are cut, and a range near the welded portion on the upper surface and the lower surface of the left and right end portions is cut at a depth corresponding to the treatment layer.
This is to gradually form a tube with a forming roll group and weld the butted portions of the left and right ends.
【０００６】[0006]
【作用】管状に成型したとき、ストリップ端部の突き合
わせ部には、表面処理層が切除されているので、溶接欠
陥と液体金属脆化が防止できる。When formed into a tube, the surface treatment layer is cut off at the abutting portion of the strip end, so that welding defects and liquid metal embrittlement can be prevented.
【０００７】[0007]
【実施例】以下に本発明の実施態様を図面に示す一実施
例にもとづき説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to an embodiment shown in the drawings.
【０００８】図１，２において、表面処理鋼板ストリッ
プＡのコイルＣから、ストリップＡを水平に展延した状
態で繰り出しながら、該ストリップの進行経路の一定区
間において、該ストリップを上下からピストンシリンダ
２で作動されるパッド１で挟み、左右から案内ロ−ラ３
で挟む。そして、該ストリップの左右端部の端面を第１
バイト４により深さａで切削し、左右端部の上面および
下面の溶接部近傍の範囲ｂを、第２バイト５により処理
層に相当する深さｃで切削する。その後、成型ロ−ル群
６で徐々に管状に成型し、前記左右端部の突き合わせ部
を溶接する。In FIGS. 1 and 2, while the strip A is unreeled from the coil C of the surface-treated steel strip A while being horizontally extended, the strip is vertically moved from the piston cylinder 2 in a certain section of the traveling path of the strip. Between the left and right guide rollers 3
Between. Then, the end surfaces of the left and right end portions of the strip are
The cutting is performed at a depth a by the cutting tool 4, and a range b near the welded portion on the upper surface and the lower surface at the left and right ends is cut by the second cutting tool 5 to a depth c corresponding to the treatment layer. Thereafter, it is gradually formed into a tubular shape by a forming roll group 6, and the butted portions at the left and right ends are welded.
【０００９】ここで、前記ａ，ｂ，ｃの値は次の範囲が
適当である。ａ＝０．１〜０．３ｍｍ，ｂ＝５〜８ｍ
ｍ，ｃ＝０．０５〜０．１ｍｍ。Here, the following ranges are appropriate for the values of a, b, and c. a = 0.1-0.3mm, b = 5-8m
m, c = 0.05-0.1 mm.
【００１０】本発明は前記した実施例や実施態様に限定
されず、特許請求の精神および範囲を逸脱せずに種々の
変形を含む。The present invention is not limited to the embodiments and embodiments described above, but includes various modifications without departing from the spirit and scope of the appended claims.
【００１１】[0011]
【発明の効果】本発明の構成により、溶接欠陥と余裕ビ
ード部からの液体金属脆化が防止でき、これらによっ
て、製品の品質と歩留の向上が達成でき、表面処理鋼板
の用途拡大が期待できる。According to the constitution of the present invention, it is possible to prevent welding defects and liquid metal embrittlement from a marginal bead portion, thereby achieving improvement in product quality and yield, and expecting an expanded use of surface-treated steel sheets. it can.
【図１】本発明方法の実施に使用される装置の一部切欠
正面図である。FIG. 1 is a partially cutaway front view of an apparatus used to carry out the method of the present invention.
【図２】図１のII─II断面図である。FIG. 2 is a sectional view taken along the line II-II in FIG.
Ａ…ストリップ、Ｃ…コイル、１…パッド、２…ピスト
ンシリンダ、３…案内ローラ、４…第１バイト、５…第
２バイト、６…成形ロール群A: strip, C: coil, 1: pad, 2: piston cylinder, 3: guide roller, 4: first byte, 5: second byte, 6: forming roll group
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B21C 37/083 B21C 37/09 Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) B21C 37/083 B21C 37/09
Claims (1)
ストリップを水平に展延した状態で繰り出しながら、該
ストリップの進行経路の一定区間において、該ストリッ
プを上下からパッドで挟み、左右から案内ロ−ラで挟
み、該ストリップの左右端部の端面を切削し、左右端部
の上面および下面の溶接部近傍の範囲を処理層に相当す
る深さで切削し、その後、成型ロ−ル群で徐々に管状に
成型し、前記左右端部の突き合わせ部を溶接することを
特徴とする表面処理鋼管の製造方法。1. A coil of a surface-treated steel strip,
While unwinding the strip in a horizontally extended state, the strip is sandwiched by pads from above and below and guide rollers from left and right, and the end faces of the left and right ends of the strip are cut in a certain section of the traveling path of the strip. Then, the upper and lower ends of the left and right end portions are cut in the vicinity of the welded portion at a depth corresponding to the treatment layer, and then gradually formed into a tubular shape by a group of forming rolls. A method for producing a surface-treated steel pipe, characterized by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10902792A JP2881273B2 (en) | 1992-03-31 | 1992-03-31 | Manufacturing method of surface treated steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10902792A JP2881273B2 (en) | 1992-03-31 | 1992-03-31 | Manufacturing method of surface treated steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05277552A JPH05277552A (en) | 1993-10-26 |
| JP2881273B2 true JP2881273B2 (en) | 1999-04-12 |
Family
ID=14499751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10902792A Expired - Lifetime JP2881273B2 (en) | 1992-03-31 | 1992-03-31 | Manufacturing method of surface treated steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2881273B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112017020590A2 (en) | 2015-03-30 | 2018-07-03 | Nippon Steel & Sumitomo Metal Corp | spot welding method of plated sheet steel |
| CN108025387B (en) | 2015-09-03 | 2020-07-07 | 日本制铁株式会社 | Spot welding method |
-
1992
- 1992-03-31 JP JP10902792A patent/JP2881273B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05277552A (en) | 1993-10-26 |
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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: 19981208 |