JPH01151989U - - Google Patents
Info
- Publication number
- JPH01151989U JPH01151989U JP4263588U JP4263588U JPH01151989U JP H01151989 U JPH01151989 U JP H01151989U JP 4263588 U JP4263588 U JP 4263588U JP 4263588 U JP4263588 U JP 4263588U JP H01151989 U JPH01151989 U JP H01151989U
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pipe
- inner cylinder
- shield
- welding
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 238000009751 slip forming Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Description
第１図はこの考案の好適な製管溶接用ガスシー
ルド装置を示す縦断側面図である。第２図は第１
図−線上の縦断正面図である。第３図Ａは同
上装置のフード部を示す平面図、同図Ｂは同フー
ド部の側面図である。第４図は同上装置の内筒と
オープンパイプ間距離とＯ２濃度との関係を示す
図である。第５図は同じくＬ／ＤとＯ２濃度との
関係を示す図である。第６図は一般に使用されて
いるボツクス型のシールド装置の一例を示す縦断
面図である。
４……高周波ワークコイル、５……スクイズロ
ール、６……インピーダ、７……被溶接管、１１
……シールドボツクス、１１−１……内筒、１１
−２……外筒、１１−３，１１−４……フード、
１２……ガス噴出口、１３……ガス供給口、１４
……ガス噴出口、１５……ガス供給口、１６……
Ｖ接合点。
FIG. 1 is a longitudinal sectional side view showing a preferred gas shield device for pipe manufacturing and welding of this invention. Figure 2 is the first
FIG. 2 is a longitudinal sectional front view on the line. FIG. 3A is a plan view showing the hood portion of the above device, and FIG. 3B is a side view of the hood portion. FIG. 4 is a diagram showing the relationship between the distance between the inner cylinder and the open pipe of the above device and the O 2 concentration. FIG. 5 is a diagram similarly showing the relationship between L/D and O 2 concentration. FIG. 6 is a longitudinal sectional view showing an example of a commonly used box type shield device. 4...High frequency work coil, 5...Squeeze roll, 6...Impeder, 7...Pipe to be welded, 11
...Shield box, 11-1 ...Inner cylinder, 11
-2... Outer cylinder, 11-3, 11-4... Hood,
12...Gas outlet, 13...Gas supply port, 14
...Gas outlet, 15...Gas supply port, 16...
V junction.
Claims (1)
接合端面に高周波電流を通じて加熱・溶融・接合
する製管溶接におけるガスシールド装置であつて
、 オープンパイプ外径より（０．１１〜０．１４
）Ｌ［Ｌ：シールド装置出側〜Ｖ接合点間の距離
］大きい内径を有し、かつ多数のガス噴出口を有
する内筒と、複数個のガス供給口を有し高周波ワ
ークコイルに内接する外筒とからなり、内筒と外
筒との間にシールドガスを通流する構造となした
二重管でシールドボツクスを構成し、該シールド
ボツクスはオープンパイプを同心円上に囲繞する
ごとくＶ接合点後方に近接配置し、前記内筒にＶ
接合点上下面を覆うフードを突設したことを特徴
とする製管溶接用ガスシールド装置。[Scope of claim for utility model registration] A gas shielding device for pipe manufacturing welding in which steel strips are continuously formed into open pipes and the ends to be welded are heated, melted and joined by passing high frequency current, 0.11-0.14
)L [L: Distance between the exit side of the shield device and the V junction point] An inner cylinder with a large inner diameter and a large number of gas jet ports, and a plurality of gas supply ports, which are inscribed in the high-frequency work coil. The shield box consists of a double pipe with a structure that allows shielding gas to flow between the inner cylinder and the outer cylinder, and the shield box has a V-junction so as to concentrically surround the open pipe. V points are placed close to the rear of the inner cylinder.
A gas shield device for pipe welding, characterized by a protruding hood that covers the upper and lower surfaces of the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4263588U JPH01151989U (en) | 1988-03-29 | 1988-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4263588U JPH01151989U (en) | 1988-03-29 | 1988-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151989U true JPH01151989U (en) | 1989-10-19 |
Family
ID=31269044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4263588U Pending JPH01151989U (en) | 1988-03-29 | 1988-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151989U (en) |
-
1988
- 1988-03-29 JP JP4263588U patent/JPH01151989U/ja active Pending
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