JPH0245553B2 - SUIREIYOSETSUYOREIKYAKUJIGU - Google Patents
SUIREIYOSETSUYOREIKYAKUJIGUInfo
- Publication number
- JPH0245553B2 JPH0245553B2 JP14614082A JP14614082A JPH0245553B2 JP H0245553 B2 JPH0245553 B2 JP H0245553B2 JP 14614082 A JP14614082 A JP 14614082A JP 14614082 A JP14614082 A JP 14614082A JP H0245553 B2 JPH0245553 B2 JP H0245553B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cooling
- pipe
- main pipe
- nozzle
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/003—Cooling means for welding or cutting
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】
本発明は、水冷溶接用冷却治具（以下、水冷治
具と称す）に係り、特に耐応力腐食割れ性（以
下、耐SCC性と称す）に好適な水冷溶接用治具に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling jig for water-cooled welding (hereinafter referred to as water-cooled jig), particularly for water-cooled welding suitable for stress corrosion cracking resistance (hereinafter referred to as SCC resistance). Regarding jigs.
水冷溶接を適用するのに際し、従来は管台溶接
部を主に冷却していた。この方法であると、熱影
響を受ける母管側は余り冷却されず、この結果、
耐SCC上主要な材料の鋭敏化或は残留応力の関係
から、折角水冷しながらも、母管側に対しては余
り良い効果を期待出来ない場合があつた。 Conventionally, when water-cooled welding was applied, the nozzle head weld was mainly cooled. With this method, the main tube side, which is affected by heat, is not cooled much, and as a result,
Due to the sensitization of the main material for SCC resistance or residual stress, there were cases where we could not expect a very good effect on the main pipe side, even though we tried water cooling.
本発明の目的は、前述した従来技術の欠点をな
くし、水冷溶接の効果を充分に発揮出来るような
水冷溶接治具を提供するにある。 An object of the present invention is to provide a water-cooled welding jig that eliminates the drawbacks of the prior art described above and can fully exhibit the effects of water-cooled welding.
水冷溶接により耐SCC性を向上させるには、溶
接熱影響部を完全に冷却する必要がある。管台溶
接部に適用する場合、管台側はストレートの水冷
治具にて容易に冷却出来るが、母管側の冷却状態
は芳しくない。本発明の目的は、母管側及び管台
側の双方を確実に冷却できる水冷治具を提供する
ことにある。 To improve SCC resistance through water-cooled welding, it is necessary to completely cool the weld heat affected zone. When applied to nozzle head welds, the nozzle head side can be easily cooled with a straight water cooling jig, but the cooling condition on the main pipe side is not good. An object of the present invention is to provide a water cooling jig that can reliably cool both the main pipe side and the nozzle stand side.
本発明の水冷治具は、母管と管台とを水冷溶接
するに当たり、前記管台より挿入して溶接部の内
面を冷却するのに使用される多数の冷却水噴射口
を有するパイプ状冷却治具において、パイプ中間
部には管台の内面を冷却するために該パイプと直
角方向に多数の冷却水噴出口を設けると共に、パ
イプ先端部は前記母管の内面位置より突出した位
置になるようにし、かつ該先端部に前記母管の内
面方向に向けられた冷却水噴出口を設けてなるこ
とを特徴とする。 The water cooling jig of the present invention is a pipe-shaped cooling jig having a large number of cooling water injection ports that are inserted from the nozzle head and used to cool the inner surface of the welded part when water-cooling welding a main pipe and a nozzle head. In the jig, in order to cool the inner surface of the nozzle holder, a large number of cooling water spouts are provided in the middle part of the pipe in a direction perpendicular to the pipe, and the tip of the pipe is located at a position that protrudes from the inner surface of the main pipe. The main pipe is characterized in that the tip portion thereof is provided with a cooling water spout facing toward the inner surface of the main pipe.
以下本発明の一実施例を第１図について説明す
る。第１図は管台溶接部の横断図を示すものであ
り、特に母管１に対し管台２のみを取替る場合に
有効な方法を示すものである。 An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a cross-sectional view of the nozzle welded part, and shows a method that is particularly effective when replacing only the nozzle 2 with respect to the main pipe 1.
先ず母管１より旧管台（図示せず）を取去り、
新管台２を取付ける。溶接部３の初層をTIG溶接
にて取付けた後、パイプ状冷却治具４を管台２の
貫通孔２Ａを通して挿入する。前記水冷治具４の
先端部は母管１の内側の面より突出した位置に設
置される。管台側は中間部４Ａに設けられたパイ
プと直角方向に設けられた噴出口４Ｃから噴出す
る冷却水により、また、母管側は先端部４Ｂに設
けられた斜め方向に設けられた噴出口４Ｄから噴
出する冷却水により冷却される。上記実施例によ
れば、噴出口４Ｄから噴出する冷却水は、母管内
面より突出した位置に設けられているため噴出強
さを適宜調節することにより管台側から落下して
くる冷却水に対してもこれに抵抗して母管内面に
確実にスプレーすることが出来る。従来は、単に
横向きの噴出口だけの場合には落下水に押し流さ
れてしまい、母管内面に十分にスプレーすること
が出来なかつた。 First, remove the old pipe head (not shown) from main pipe 1,
Install new pipe stand 2. After the first layer of the welded portion 3 is attached by TIG welding, the pipe-shaped cooling jig 4 is inserted through the through hole 2A of the nozzle holder 2. The tip of the water cooling jig 4 is installed at a position protruding from the inner surface of the main pipe 1. On the nozzle stub side, the cooling water is ejected from the spout 4C provided at right angles to the pipe provided in the intermediate section 4A, and on the main pipe side, the cooling water is ejected from the ejection port provided in the diagonal direction on the tip section 4B. It is cooled by cooling water spouted from 4D. According to the above embodiment, since the cooling water jetted from the spout 4D is provided at a position protruding from the inner surface of the main pipe, the jetting strength can be adjusted appropriately to prevent the cooling water from falling from the nozzle stand side. Even against this, the spray can be reliably sprayed onto the inner surface of the main pipe. In the past, if there was only a sideways spout, the spray would be washed away by the falling water, and the inner surface of the main pipe could not be sufficiently sprayed.
この時の冷却は、熱影響を受けると考えられる
管台側Ｂ部のみならず、母管側Ａ部も充分冷却出
来るようにする。これは水冷治具４の穴をあらか
じめモツクアツプにより調整しておき実施するよ
うにする。 At this time, the cooling is done so that not only the nozzle stand side B section, which is considered to be affected by heat, but also the main pipe side A section can be sufficiently cooled. This is done by adjusting the holes in the water cooling jig 4 in advance by mock-up.
本発明は以上の様に水冷治具４の改良によりＡ
部及びＢ部を冷却しながら、溶接３を完了させよ
うとするものである。 As described above, the present invention achieves A by improving the water cooling jig 4.
Welding 3 is attempted to be completed while cooling the part and B part.
本発明によれば、耐SCC上有効な残留応力及び
材料の鋭敏化を最小限に抑制することができる。 According to the present invention, residual stress and material sensitization, which are effective in improving SCC resistance, can be suppressed to a minimum.
特に大口径の母管２は、簡単に取替えることが
出来ないため旧材料使用の弱点を有しているが、
水冷治具にて完全に冷却することにより、第３図
に示すように残留応力を大巾に改善することがで
きる。第２図は、母管１に管台２を取付けた正面
図であり、第３図は、第２図のＸ−Ｙ断面図であ
る。第３図の実線が改良水冷具を使用した場合、
点線表示が従来型のものである。 In particular, the large-diameter main pipe 2 has the disadvantage of using old materials because it cannot be easily replaced.
By completely cooling with a water cooling jig, the residual stress can be greatly improved as shown in FIG. FIG. 2 is a front view of the nozzle 2 attached to the main pipe 1, and FIG. 3 is an XY sectional view of FIG. 2. The solid line in Figure 3 indicates when the improved water cooling device is used.
The dotted line is the conventional type.
また、第４図は材料の鋭敏化に大きな影響をも
つ溶接時の最高温度を記録したものであり、実線
が本発明の水冷治具を使用したもの、点線が従来
型のものである。（尚温度は初層TIG溶接以降の
ものである）
以上のように本発明の水冷治具を使用すること
により、弱点と考えられる母管側に対し残留応力
及び鋭敏化度を低減し耐SCC性を大巾に向上する
ことができるようになる。 Moreover, FIG. 4 records the maximum temperature during welding, which has a great effect on the sensitization of the material, where the solid line is the one using the water cooling jig of the present invention, and the dotted line is the one using the conventional type. (Note that the temperature is after the first layer TIG welding) As described above, by using the water cooling jig of the present invention, residual stress and sensitization degree on the main pipe side, which is considered to be the weak point, can be reduced and SCC resistance can be reduced. You will be able to greatly improve your sexuality.
第１図は本発明の水冷治具を取付けた、管台溶
接部の横断面図、第２図は母管に管台を取付けた
正面図、第３図は第２図Ｘ−Ｙ断面の残留応力分
布図、第４図は温度分布図を示す。
１……母管、２……管台、３……管台溶接部、
４……水冷治具、Ａ……母管側熱影響部、Ｂ……
管台側熱影響部。
Figure 1 is a cross-sectional view of the nozzle welded part with the water cooling jig of the present invention attached, Figure 2 is a front view of the nozzle attached to the main pipe, and Figure 3 is the X-Y cross section of Figure 2. The residual stress distribution diagram and FIG. 4 show the temperature distribution diagram. 1... Main pipe, 2... Nozzle stub, 3... Nozzle welded part,
4...Water cooling jig, A...Heat affected zone on main pipe side, B...
Heat affected zone on the nozzle side.
Claims (1)
管台より挿入して溶接部の内面を冷却するのに使
用される多数の冷却水噴射口を有するパイプ状冷
却治具において、パイプ中間部には管台の内面を
冷却するために該パイプと直角方向に多数の冷却
水噴出口を設けると共に、パイプ先端部は前記母
管の内面位置より突出した位置になるようにし、
かつ該先端部に前記母管の内面方向に向けられた
冷却水噴出口を設けてなることを特徴とする水冷
溶接用冷却治具。1. In a pipe-shaped cooling jig having a large number of cooling water injection ports inserted from the nozzle head and used to cool the inner surface of the welded part when water-cooling welding the main pipe and the nozzle head, the intermediate part of the pipe is In order to cool the inner surface of the nozzle holder, a large number of cooling water spouts are provided in a direction perpendicular to the pipe, and the tip of the pipe is located at a position protruding from the inner surface of the main pipe,
A cooling jig for water-cooled welding, characterized in that the distal end portion is provided with a cooling water spout directed toward the inner surface of the main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14614082A JPH0245553B2 (en) | 1982-08-25 | 1982-08-25 | SUIREIYOSETSUYOREIKYAKUJIGU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14614082A JPH0245553B2 (en) | 1982-08-25 | 1982-08-25 | SUIREIYOSETSUYOREIKYAKUJIGU |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5935895A JPS5935895A (en) | 1984-02-27 |
| JPH0245553B2 true JPH0245553B2 (en) | 1990-10-09 |
Family
ID=15401041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14614082A Expired - Lifetime JPH0245553B2 (en) | 1982-08-25 | 1982-08-25 | SUIREIYOSETSUYOREIKYAKUJIGU |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0245553B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780794B2 (en) * | 1984-12-04 | 1995-08-30 | 三井造船株式会社 | Separation and purification method of hydrocarbon pyrolysis gas |
-
1982
- 1982-08-25 JP JP14614082A patent/JPH0245553B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5935895A (en) | 1984-02-27 |
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