JPS5834137A - Method of heating vertical weld seam for weld zone heat treatment - Google Patents
Method of heating vertical weld seam for weld zone heat treatmentInfo
- Publication number
- JPS5834137A JPS5834137A JP57105234A JP10523482A JPS5834137A JP S5834137 A JPS5834137 A JP S5834137A JP 57105234 A JP57105234 A JP 57105234A JP 10523482 A JP10523482 A JP 10523482A JP S5834137 A JPS5834137 A JP S5834137A
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- heating
- weld
- seam
- zone heat
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は特に肉厚≧１０ｗＩＡの大径管の縦シームのた
めの、溶接域の熱処理のための方法に関する・
周知のように溶接域の加熱は・従来誘導法（いわゆる線
状誘導）により、あるいは炎筒熱により行われる。公知
め方法は、管と加熱装置（誘導加熱の場合はコイル１炎
加熱の場合はバーナ）との間の相対運動を行うことによ
って、局部加熱しか行わないのが特徴である。熱処理の
ために最適である、シーム全長の同時加熱は、公知の方
法では不可能である。また上記の２つの方法では給熱が
表面を経て行われるから・熱伝導の結果、幅広い加熱域
が発生する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for the heat treatment of the weld zone, in particular for longitudinal seams of large diameter pipes with a wall thickness ≧10 wIA. As is known, the heating of the weld zone can be accomplished by conventional induction methods ( This is done by so-called linear induction) or by flame cylinder heat. The known method is characterized in that only local heating is achieved by relative movement between the tube and the heating device (in the case of induction heating, the burner in the case of coil single-flame heating). Simultaneous heating of the entire seam length, which is optimal for heat treatment, is not possible with known methods. In addition, in the above two methods, since heat is supplied through the surface, a wide heating area is generated as a result of heat conduction.
公知の方法は不良なエネルギ効率の欠点があり、炎筒熱
には更に煙ガスによる環境被害がある・
本発明の目的は、縦溶接シームの区域の溶接域の熱処理
によってこの区域の材質を大幅に改善し１更に加熱域の
幅を減少する方法を提供することである・
この目的の達成のために、本発明により特に肉厚≧ｌＯ
■の大径管の縦シームのための、溶接域の熱処理のため
の縦溶接シームの加熱方法において、加熱な電導法で行
い、その際シームの近傍の、またはシーム上で互いに並
んだ、異なる極性の多数の点状接触部を介して、肉厚の
約１／２ないし１０倍に相当する範匪の接触部間隔で給
電を行うことを特徴とする方法を提案する・本発明によ
る方法の最も本質的な利点は、シーム全体が同時に加熱
されることにある。このことは、縦シーム全体を同一過
程で冷却することもできることを意味する。電流が管の
壁体の中に浸透することによって、加熱域の幅を公知の
方法に比して大幅に減少することができる。The known methods have the drawback of poor energy efficiency, and the flame tube heat additionally causes environmental damage due to smoke gases.The object of the invention is to significantly improve the material quality in this area by heat treatment of the weld zone in the area of longitudinal weld seams. It is therefore an object of the present invention to provide a method for further reducing the width of the heating zone.
■ A heating method for longitudinal weld seams for heat treatment of the weld zone for longitudinal seams of large-diameter pipes, carried out by a heated electrical conduction method, in which different A method according to the present invention is proposed, characterized in that power is supplied through a large number of point-like contacts of polarity, at a contact interval of a range corresponding to about 1/2 to 10 times the wall thickness. The most essential advantage is that the entire seam is heated at the same time. This means that the entire longitudinal seam can also be cooled in the same process. By penetrating the current into the wall of the tube, the width of the heating zone can be significantly reduced compared to known methods.
エネルギ損失は公知の方法と興なり、給電ケーブルの損
失に限られる。Energy losses are limited to the losses in the feed cable in accordance with the known method.
接点間隔を変化することによって、特別の費用を掛けず
に・他の肉厚への適応が可能である・本発明方法のもう
一つの利点は、局部的な材料集積ＩＫ（７ランジ、段部
なと）も均一に加熱できることである。By varying the contact spacing, adaptation to other wall thicknesses is possible at no extra cost.Another advantage of the method is that local material accumulation IK (7 langes, steps) ) can also be heated evenly.
本発明による方法は非磁性電導材料にも適用することが
できる・
任意の形の部分的加熱が可能である０誘導法と比較して
、電導加熱の適用は周波数に無関係である・
添付の図面に管の溶接シームの近傍の接触部の配列を略
図で示す０この図面では管１が溶接シーム２と並んで・
一連の点状接触部３，４゜５を具備し、その場合接触部
３は平行にかつ互いに対向して、接触部４は溶接シーム
上に、また接触ＷＬ５は溶接シームと平行Ｖｃ１但し互
い違いに、配列されている〇
接触Ｎ３，４または５を押付けた後、全作用長にわたっ
て同時に電源を接続する＠加熱は最大電流密度の区域、
すなわち接触部の近傍と接触部の間で行われるＯ加熱過
程で押圧力を変えることによって、加熱速度の局部的な
差異を補償することができる０The method according to the invention can also be applied to non-magnetic conductive materials. Compared to zero-induction methods, where any form of local heating is possible, the application of conductive heating is frequency independent. Figure 2 schematically shows the arrangement of the contacts in the vicinity of the weld seam of the tube.
It comprises a series of point-like contacts 3, 4° 5, with the contacts 3 parallel and opposite each other, the contacts 4 on the weld seam and the contacts WL5 parallel to the weld seam Vc1 but staggered. , arranged〇 After pressing the contacts N3, 4 or 5, connect the power supply simultaneously over the entire working length @ heating the area of maximum current density,
In other words, by changing the pressing force during the O heating process that takes place near and between the contact area, it is possible to compensate for local differences in the heating rate.
図は管の溶接シームの近傍の接触部の配列の略図を示す
０
２・・・・・・溶接シーム、
３ ｔ ４．５・・・・−・点状接触部。
２The figure shows a schematic representation of the arrangement of contacts in the vicinity of the weld seam of a tube. 2
Claims (1)
ための縦溶接シームの加熱方法において、加熱な電導法
で行い・その際シームの近傍の、またはシーム上で互い
に並んだ％興なる極性の多数の点状接触部を介して、肉
厚の約１／２ないし１０倍に相当する範囲の接触部間隔
で給電を行うことを特徴とする方法・（２）接触部がシ
ームに平行して互いに対向し、または互い違いに配列さ
れていることを特徴とする特許請求の範闘第１項に記載
の方法・（３） 接触部を平行に配列した場合に肉厚
のＩ／２ないし１０倍の接触部槽間隔を保持することを
特徴とする特許請求の範囲第１項および第２項に記載の
方法◎(1) A method of heating longitudinal weld seams for the heat treatment of the weld zone, especially for longitudinal seams of large diameter pipes, carried out by a hot conductive method, with the percentage of % adjacent to or next to each other on the seam being A method characterized in that power is supplied through a large number of point-like contact parts of different polarities at a contact part interval corresponding to about 1/2 to 10 times the wall thickness. (2) The contact part has a seam. The method according to claim 1, characterized in that the contact portions are arranged parallel to each other, facing each other, or staggered. (3) When the contact portions are arranged parallel to each other, ◎ The method according to claims 1 and 2, characterized in that the spacing between the contact portions and the tanks is maintained at a distance of 2 to 10 times.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE31336280 | 1981-08-21 | ||
| DE19813133628 DE3133628A1 (en) | 1981-08-21 | 1981-08-21 | METHOD FOR HEATING LONG-SIDE WELDING SEAMS FOR THE HEAT TREATMENT OF THE SEAM AREA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5834137A true JPS5834137A (en) | 1983-02-28 |
Family
ID=6140093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57105234A Pending JPS5834137A (en) | 1981-08-21 | 1982-06-18 | Method of heating vertical weld seam for weld zone heat treatment |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5834137A (en) |
| DE (1) | DE3133628A1 (en) |
| FR (1) | FR2511704A1 (en) |
| GB (1) | GB2104106A (en) |
| IT (1) | IT1151568B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755921A (en) * | 2016-11-28 | 2017-05-31 | 中石化南京工程有限公司 | Austenitic stainless steel pressure piping weld joint stable heat treatment system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060205A1 (en) * | 2008-12-04 | 2010-06-10 | Rolls-Royce Deutschland Ltd & Co Kg | Method for producing a welded rotor for a gas turbine engine |
| DE102011009947A1 (en) * | 2011-02-01 | 2012-08-02 | Rwe Technology Gmbh | Process for the heat treatment of welds on power plant components |
-
1981
- 1981-08-21 DE DE19813133628 patent/DE3133628A1/en not_active Ceased
-
1982
- 1982-05-17 IT IT21302/82A patent/IT1151568B/en active
- 1982-06-18 JP JP57105234A patent/JPS5834137A/en active Pending
- 1982-07-01 FR FR8211559A patent/FR2511704A1/en not_active Withdrawn
- 1982-08-20 GB GB08224017A patent/GB2104106A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755921A (en) * | 2016-11-28 | 2017-05-31 | 中石化南京工程有限公司 | Austenitic stainless steel pressure piping weld joint stable heat treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2511704A1 (en) | 1983-02-25 |
| IT1151568B (en) | 1986-12-24 |
| IT8221302A0 (en) | 1982-05-17 |
| DE3133628A1 (en) | 1983-06-01 |
| IT8221302A1 (en) | 1983-11-17 |
| GB2104106A (en) | 1983-03-02 |
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