JP3244857B2 - Corrosion resistant structure coated with corrosion resistant metal - Google Patents
Corrosion resistant structure coated with corrosion resistant metalInfo
- Publication number
- JP3244857B2 JP3244857B2 JP10007793A JP10007793A JP3244857B2 JP 3244857 B2 JP3244857 B2 JP 3244857B2 JP 10007793 A JP10007793 A JP 10007793A JP 10007793 A JP10007793 A JP 10007793A JP 3244857 B2 JP3244857 B2 JP 3244857B2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- resistant metal
- steel pipe
- metal
- welded
- 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 - Fee Related
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Laser Beam Processing (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐食性に優れた金属皮
膜鋼管杭、パイプライン用鋼管、鋼矢板、橋脚に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-coated steel pipe pile excellent in corrosion resistance, a steel pipe for a pipeline, a steel sheet pile, and a pier.
【０００２】[0002]
【従来の技術】例えば、従来、防食鋼管杭には特開平２
−２５６７１３号公報に示すように、鋼管杭の外表面に
耐食性及び弾力性を有する接着性樹脂を被覆し、更にエ
ンボス状凸凹を加工した耐食性金属薄板を被覆したもの
があるが、接着性樹脂を用いて耐食性金属を貼付した場
合、接着材寿命が防食鋼管の寿命になり、耐食性金属の
耐久性が活用されない。又耐食性金属を鋼管杭に巻きつ
け両方の端部をＴＩＧ溶接などで溶接したものがある
が、熱影響部が大きく溶接部の材質を著しく劣化させ
る。又薄板では溶接部の熱変形や耐食性金属に貫通孔を
生じさせ、良好な溶着ができないと云う問題がある。2. Description of the Related Art For example, a conventional anticorrosion steel pipe pile is disclosed in
As shown in -256713, an outer surface of a steel pipe pile is coated with an adhesive resin having corrosion resistance and elasticity, and a steel sheet pile is further coated with a corrosion-resistant metal sheet processed into embossed irregularities. When the corrosion-resistant metal is used, the life of the adhesive becomes the life of the corrosion-resistant steel pipe, and the durability of the corrosion-resistant metal is not utilized. Further, there is a corrosion resistant metal wound around a steel pipe pile and both ends are welded by TIG welding or the like. On the other hand, a thin plate has a problem in that thermal deformation of the welded portion and through-holes are formed in the corrosion-resistant metal, and good welding cannot be performed.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、耐食性金属
を部分的に溶着し、かかる問題点のない品質の高い耐食
性金属薄板被覆構造を目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a high quality corrosion-resistant metal sheet coating structure in which a corrosion-resistant metal is partially welded and free from such problems.
【０００４】[0004]
【課題を解決するための手段】本発明は、所要の幅と長
さを有する耐食性金属の薄板を鋼管の外周方向に片側端
が他方端に重なるように巻きつけ、重ね合わせ部同士を
レーザー溶接して溶着させるとともに、更に前記薄板と
同様の幅と長さを有する耐食性金属の薄板の片側端が他
方端に重なるように巻きつけながら、鋼管の長手方向に
も前記溶着した耐食性金属の薄板と重なるように巻きつ
け、それぞれの薄板重ね合わせ部同士をレーザー溶接に
て溶着させるたことを特徴とする耐食性金属を被覆した
防食構造。又は前記鋼管の軸方向の耐食性金属継目がそ
れぞれ異なる位置としたことを特徴とする耐食性金属を
被覆した防食構造である。According to the present invention, a thin plate of a corrosion-resistant metal having a required width and length is provided at one end in the outer circumferential direction of a steel pipe.
Is wound so that it overlaps the other end.
Laser welding and welding, and further with the thin plate
One end of a sheet of corrosion resistant metal of similar width and length
While winding so that it overlaps the one end,
Also wound so as to overlap with the welded corrosion-resistant metal sheet.
For laser welding
A corrosion-resistant structure coated with a corrosion-resistant metal, characterized by being welded. Or the corrosion-resistant metal seam of the steel pipe in the axial direction is
Corrosion-resistant metals characterized by different positions
It is a coated anticorrosion structure.
【０００５】[0005]
【作用】本発明について、例えば鋼管について図面を示
して説明する。図１に示すように、鋼管１に耐食性金属
２を外周方向に耐食性金属２の片側端が他方端に重なる
ように巻きつけ、その重ね合せた箇所をレーザー溶接に
て溶着する。次に耐食性金属２を外周方向に耐食性金属
２の片側端が他方端に重なるように巻きつけ乍ら、鋼管
の長手方向にも既に溶着した耐食性金属２と重なるよう
に巻きつけ、それぞれ重ね合せた箇所をレーザー溶接に
て溶着させる。１例として図面の如く鋼管１の軸に直角
方向には金属薄板の外周方向継目３は直線状に、又軸方
向は各薄板の軸方向継目４はくいちがいに溶接する。The present invention will be described with reference to the drawings, for example, for a steel pipe. As shown in FIG. 1, a corrosion-resistant metal 2 is wound around a steel pipe 1 so that one end of the corrosion-resistant metal 2 overlaps the other end in the outer circumferential direction, and the overlapped portion is welded by laser welding. Next, while wrapping the corrosion-resistant metal 2 in the outer peripheral direction so that one end of the corrosion-resistant metal 2 overlaps the other end, the corrosion-resistant metal 2 is also wound in the longitudinal direction of the steel pipe so as to overlap with the corrosion-resistant metal 2 which has already been welded, and each is overlapped. The parts are welded by laser welding. As an example, as shown in the drawing, the outer peripheral seam 3 of the thin metal plate is welded linearly in the direction perpendicular to the axis of the steel pipe 1, and the axial seam 4 of each thin plate is welded in the axial direction.
【０００６】図２は鋼管１に耐食性金属１の端部同士を
重ねてレーザー溶接したレーザー溶接の溶接部５の断面
図を示し、溶接部５は耐食性金属１の重ね部を貫通し鋼
管１にまでくいこんで溶接部５を形成している。溶接部
５は巾が狭く耐食性金属２の上下を溶着し、更に下の金
属２は鋼管１とも溶着しているが鋼管１の成分は溶着部
６の表面にまで拡散しないので溶接部の耐食性をそこね
ることがない。FIG. 2 is a cross-sectional view of a laser welded portion 5 in which the ends of the corrosion-resistant metal 1 are overlapped and laser-welded to the steel pipe 1, and the welded portion 5 penetrates the overlapped portion of the corrosion-resistant metal 1 and passes through the steel pipe 1. The welded portion 5 is formed by digging. The welded portion 5 has a narrow width and is welded above and below the corrosion-resistant metal 2, and the metal 2 below is also welded to the steel pipe 1, but the components of the steel pipe 1 do not diffuse to the surface of the welded portion 6. I won't go wrong.
【０００７】本発明においてレーザー溶接にて耐食性金
属を溶着させることで、品質向上を図ることができる。
又レーザー溶接を用いることで、薄板の溶接が可能とな
り、耐食性金属と同等の寿命が期待できる。耐食性金属
としてはステンレス鋼板、チタン又はチタン合金板、ア
ルミニウム板、溶融亜鉛又は亜鉛合金めっき板が使用で
きる。又耐食性金属薄板の大きさとしては６００ｍｍ×
１０００ｍｍ〜１２００ｍｍ×６５００ｍｍのものが使
用される。又本発明の耐食性金属を被覆した構造は、切
貼りするので製造方法が簡単である。In the present invention, quality can be improved by welding a corrosion-resistant metal by laser welding.
Also, by using laser welding, thin plates can be welded, and a life equivalent to that of a corrosion-resistant metal can be expected. As the corrosion-resistant metal, a stainless steel plate, a titanium or titanium alloy plate, an aluminum plate, a hot-dip zinc or zinc alloy plated plate can be used. The size of the corrosion-resistant metal sheet is 600 mm x
Those having a size of 1000 mm to 1200 mm x 6500 mm are used. The structure coated with the corrosion-resistant metal of the present invention is cut and pasted, so that the manufacturing method is simple.
【０００８】本発明について薄板重ね合わせ部をレーザ
ー溶接にて鋼材に溶着する場合について説明したが、薄
板重ね合わせ部同士をレーザー溶接にて溶着し、薄板と
鋼材の摩擦力や薄板と鋼材との間に接着材を塗布する等
により防食構造を構築できる。溶接部５の断面は図３に
示すものとなる。これより薄板同士の重ね部の耐久性が
向上できる。Although the present invention has been described with respect to the case where the overlapped portions of a thin plate are welded to a steel material by laser welding, the overlapped portions of the thin plates are welded to each other by laser welding, and the frictional force between the thin plate and the steel material and the force between the thin plate and the steel material. An anticorrosion structure can be constructed by applying an adhesive between them. The cross section of the welded portion 5 is as shown in FIG. Thereby, the durability of the overlapping portion between the thin plates can be improved.
【０００９】[0009]
【実施例】鋼管の直径６００ｍｍ、厚さ１４ｍｍ、耐食
性金属ステンレスの厚さ１ｍｍ、巾１２００ｍｍのスト
リップを巻きつけ、レーザー溶接機で溶着する。EXAMPLE A steel pipe having a diameter of 600 mm, a thickness of 14 mm, a corrosion-resistant metal stainless steel of 1 mm in thickness and a width of 1200 mm is wound and welded by a laser welding machine.
【００１０】[0010]
【発明の効果】鋼管に耐食性金属を確実に部分的溶接被
覆できるので耐食性金属と同等の寿命が期待できる。又
コストダウン、品質向上を図ることが出来る。As described above, since the corrosion resistant metal can be surely partially coated on the steel pipe, the same life as the corrosion resistant metal can be expected. Further, cost reduction and quality improvement can be achieved.
【図１】本発明防食鋼管の斜視図である。FIG. 1 is a perspective view of a corrosion-resistant steel pipe of the present invention.
【図２】図１のＡ−Ａ断面である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】薄板重ね合わせ部同士を溶接した場合の溶接部
断面である。FIG. 3 is a cross-sectional view of a welded portion in a case where thin sheet overlap portions are welded to each other.
１ 鋼管 ２ 耐食性金属 ３ 外周方向継目 ４ 軸方向継目 ５ 溶接部 DESCRIPTION OF SYMBOLS 1 Steel pipe 2 Corrosion resistant metal 3 Perimeter seam 4 Axial seam 5
───────────────────────────────────────────────────── フロントページの続き (72)発明者 及川 昌志 神奈川県相模原市淵野辺５−10−１ 新 日本製鐵株式会社 エレクトロニクス研 究所内 (56)参考文献 特開 昭56−55625（ＪＰ，Ａ) 実開 昭62−185752（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 5/60 B23K 26/00 310 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masashi Oikawa 5-10-1 Fuchinobe, Sagamihara City, Kanagawa Prefecture Nippon Steel Corporation Electronics Research Laboratory (56) References JP-A-56-55625 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E02D 5/60 B23K 26/00 310
Claims (2)
板を鋼管の外周方向に片側端が他方端に重なるように巻
きつけ、重ね合わせ部同士をレーザー溶接して溶着させ
るとともに、更に前記薄板と同様の幅と長さを有する耐
食性金属の薄板の片側端が他方端に重なるように巻きつ
けながら、鋼管の長手方向にも前記溶着した耐食性金属
の薄板と重なるように巻きつけ、それぞれの薄板重ね合
わせ部同士をレーザー溶接にて溶着させるたことを特徴
とする耐食性金属を被覆した防食構造。1. A thin sheet of a corrosion-resistant metal having a required width and length is wound so that one end overlaps the other end in the outer peripheral direction of a steel pipe.
Laser welding and welding of the overlapping and overlapping parts
And the same width and length as the thin plate.
Wrap so that one end of the edible metal sheet overlaps the other end
The corrosion-resistant metal deposited in the longitudinal direction of the steel pipe
And wrap them so that they overlap each other.
An anticorrosion structure coated with a corrosion- resistant metal, wherein the welded portions are welded by laser welding .
れぞれ異なる位置としたことを特徴とする請求項１記載
の耐食性金属を被覆した防食構造。2. The steel pipe according to claim 1, wherein said metal pipe has an axial corrosion-resistant metal seam.
2. The method according to claim 1, wherein the positions are different from each other.
Anti-corrosion structure coated with anti- corrosion metal .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10007793A JP3244857B2 (en) | 1993-04-05 | 1993-04-05 | Corrosion resistant structure coated with corrosion resistant metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10007793A JP3244857B2 (en) | 1993-04-05 | 1993-04-05 | Corrosion resistant structure coated with corrosion resistant metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06287945A JPH06287945A (en) | 1994-10-11 |
| JP3244857B2 true JP3244857B2 (en) | 2002-01-07 |
Family
ID=14264391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10007793A Expired - Fee Related JP3244857B2 (en) | 1993-04-05 | 1993-04-05 | Corrosion resistant structure coated with corrosion resistant metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3244857B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1011953A4 (en) * | 1997-09-25 | 2000-03-07 | Cit Alcatel | Piles of protection arrangement of wooden anchors deep water bodies against aggressive attack against wood. |
| JP5425860B2 (en) * | 2011-10-24 | 2014-02-26 | 中国電力株式会社 | Hollow metal member reinforcement structure and hollow metal member reinforcement method |
| CN103753043A (en) * | 2014-01-22 | 2014-04-30 | 淮南巨万实业有限责任公司 | Method for adding anti-corrosion layer onto hydraulic support stand column in rolling and longitudinal welding mode |
| JP6672898B2 (en) * | 2016-03-04 | 2020-03-25 | 中国電力株式会社 | Boiler tube reinforcement device and boiler tube reinforcement method |
-
1993
- 1993-04-05 JP JP10007793A patent/JP3244857B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06287945A (en) | 1994-10-11 |
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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: 20011016 |
|
| LAPS | Cancellation because of no payment of annual fees |