DE906339C - Post-treatment of lateral, welded pipe connections in multi-layer hollow bodies - Google Patents

Post-treatment of lateral, welded pipe connections in multi-layer hollow bodies

Info

Publication number
DE906339C
DE906339C DEB16263A DEB0016263A DE906339C DE 906339 C DE906339 C DE 906339C DE B16263 A DEB16263 A DE B16263A DE B0016263 A DEB0016263 A DE B0016263A DE 906339 C DE906339 C DE 906339C
Authority
DE
Germany
Prior art keywords
lateral
treatment
post
hollow bodies
pipe connections
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
Application number
DEB16263A
Other languages
German (de)
Inventor
Dr-Ing Immanuel Class
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to DEB16263A priority Critical patent/DE906339C/en
Application granted granted Critical
Publication of DE906339C publication Critical patent/DE906339C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Description

Nachbehandlung von seitlichen, angeschweißten Rohranschlüssen bei Mehrlagenhohlkörpern Im Patent $66655 ist ein Verfahren zur Nachbehandlung von seitlichen, angeschweißten Rohranschlüssen bei Mehrlagenhohlkörpern, insbesondere Wickelkörpern, beschrieben, wobei eine Glühbehandlung der Schweißstellen, die im Bereich des seitlichen Anschlußrohres liegen, mittels elektrischer Induktionserwärmung erfolgt. Es wurde damit die Aufgabe gelöst, ein zur Wandung etwa senkrecht stehendes Rohr, das z. B. zur Zu- und Abführung von Reaktionsteilnehmern dient, durch die einzelnen Wickellagen durchzuführen und mit dem Kernrohr und gegebenenfalls den Lagen so zu verbinden, daß die Verbindung den auftretenden Beanspruchungen gewachsen ist und dabei völlige Dichtheit gegenüber dem Innendruck gewährleistet.Post-treatment of welded-on pipe connections on the side Multi-layer hollow bodies The patent $ 66655 describes a process for the post-treatment of lateral, welded pipe connections for multi-layer hollow bodies, in particular wound bodies, described, with an annealing treatment of the welds in the area of the lateral Connection pipe lie, takes place by means of electrical induction heating. It was thus the problem solved, a to the wall approximately perpendicular tube, the z. B. is used to feed and discharge reaction participants through the individual winding layers to be carried out and to be connected to the core tube and, if necessary, the layers, that the connection can cope with the stresses that arise and is complete Guaranteed tightness against the internal pressure.

Es wurde nun gefunden, daß dieses Ziel auch dann erreicht wird, wenn man an Stelle der elektrischen Induktionserwärmung eine Glühbehandlung der Schweißstellen mittels Gasflamme vornimmt, wobei entweder jede Schweißlage für sich, gegebenenfalls bereits schon während des Schweißvorganges, oder mehrere Lagen gemeinsam behandelt werden können. Es wird demnach gerade mit einer Methode gearbeitet, welche dem üblichen Vorgehen bei der Glühung dickwandiger Gefäße entgegengesetzt ist. Während sonst eine möglichst gleichmäßige Temperaturverteilung über den ganzen Körper angestrebt werden muß, soll nach dem vorliegenden Vorschlag nur in dem die Schweißung des seitlichen Anschlußrohres enthaltenden Teil ein möglichst intensiver Wärmestau erzielt werden und die Erwärmung eines größeren Bereiches der einzelnen Lagen vermieden werden, damit zusätzliche neue Eigenspannungen und ein Verziehen des Körpers nur in möglichst geringem Umfang auftreten können.It has now been found that this goal is achieved even if instead of electrical induction heating, the welding points are annealed by means of a gas flame, with either each welding layer for itself, if necessary already during the welding process, or several layers treated together will can. It is therefore currently working with a method that is the usual The procedure for annealing thick-walled vessels is the opposite. While otherwise The aim is to achieve as even a temperature distribution as possible over the whole body must be, according to the present proposal, only in which the welding of the side Connection pipe containing part as intense as possible heat build-up can be achieved and the heating of a larger area of the individual layers can be avoided, thus additional new internal stresses and a distortion of the body only in as much as possible can occur on a small scale.

Claims (1)

PATENTANSPRUCH: Abänderung des Verfahrens des Patents 866 655 zur Herstellung von seitlichen, angeschweißten Rohranschlüssen bei Mehrlagenhohlkörpern, insbesondere Wickelkörpern, dadurch gekennzeichnet, daß die Glühbehandlung der Schweißstellen mittels Gasflamme vorgenommen wird. PATENT CLAIM: Modification of the method of patent 866 655 for the production of lateral, welded pipe connections in multi-layer hollow bodies, in particular wound bodies, characterized in that the annealing treatment of the welds is carried out by means of a gas flame.
DEB16263A 1951-08-11 1951-08-11 Post-treatment of lateral, welded pipe connections in multi-layer hollow bodies Expired DE906339C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB16263A DE906339C (en) 1951-08-11 1951-08-11 Post-treatment of lateral, welded pipe connections in multi-layer hollow bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB16263A DE906339C (en) 1951-08-11 1951-08-11 Post-treatment of lateral, welded pipe connections in multi-layer hollow bodies

Publications (1)

Publication Number Publication Date
DE906339C true DE906339C (en) 1954-03-11

Family

ID=6958827

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB16263A Expired DE906339C (en) 1951-08-11 1951-08-11 Post-treatment of lateral, welded pipe connections in multi-layer hollow bodies

Country Status (1)

Country Link
DE (1) DE906339C (en)

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