DE622162C - Process for annealing pipes stretched in sections - Google Patents

Process for annealing pipes stretched in sections

Info

Publication number
DE622162C
DE622162C DES113627D DES0113627D DE622162C DE 622162 C DE622162 C DE 622162C DE S113627 D DES113627 D DE S113627D DE S0113627 D DES0113627 D DE S0113627D DE 622162 C DE622162 C DE 622162C
Authority
DE
Germany
Prior art keywords
stretched
stretching device
sections
annealing
stretching
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
DES113627D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE622162C publication Critical patent/DE622162C/en
Expired legal-status Critical Current

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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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes

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 Strip Materials And Filament Materials (AREA)

Description

Verfahren zum Ausglühen von abschnittweise gestreckten Rohren Die Erfindung betrifft ein Verfahren zum Ausgleichen von abschnittweise gestreckten Rohren nachPatent603 138 und besteht darin, daß man den dieStreckvorrichtung verlassenden ausgestreckten Teil des Werkstücks zur anschließenden Wärmebehandlung in einen Glühofen laufen läßt und die Vorschubeinrichtungen der Streckvorrichtung und den Streckvorgang selbst benutzt, die ausgestreckten Rohre aus der Streckvorrichtung unmittelbar durch den Glühofen zu befördern.Process for annealing pipe stretched in sections The invention relates to a method for compensating for sections stretched Tubing according to patent 603 138 and consists in the fact that one leaves the stretching device extended part of the workpiece for subsequent heat treatment in an annealing furnace runs and the feed devices of the stretching device and the stretching process even used, the stretched tubes from the stretching device directly through to move the annealing furnace.

Da das ausgestreckte und verlängerte Werkstück die Streckvorrichtung frei und mit verhältnismäßig niedriger Geschwindigkeit verläßt, so kann man die dem Streckvorgang folgenden Wärmebehandlungen, welche zur Beseitigung der Ausstreckspannungen und der Ausstreckhärte dienen, in äußerst zweckmäßigerWeise mit demAusstrecken kuppeln. Zu diesemZwecke läßt man beispielsweise bei .derHerstellung vonRohren den die Streckvorrichtung verlassenden ausgestreckten Rohrteil in einen in geringerEntfernung von der Streckvorrichtung aufgestellten Rohrglühofen laufen und benutzt so die Vorschubeinrfchtungen derStreckvorrichtung und den Streckvorgang dazu, die ausgestreckten Rohre aus der Streckvorrichtung unmittelbar durch den Glühofen zu befördern. Ein solcher für den Erfindungszweck geeigneter, mit elektrischer Widerstandsheizung ausgerüsteter Ofen kann, da er im Querschnitt nur ein Rohr aufzunehmen hat, von sehr einfacher Bauart sein. Das Verschieben der Rohre im Ofen kann beispielsweise auf einer Stange oder einem Drahtseil stattfinden, die mit dem einen Ende an dem Dornkopf und, durch den rohrförmigen Glühofen geführt, mit dem anderen Ende außerhalb des Glühofens mit einer gewissen Zugspannung befestigt sind. Die zweckmäßig aus hitzebeständigen und warmfesten Werkstoffen hergestellte Tragstange oder das Tragseil kann mit Wärmeschutzmitteln gegen Wärmeaufnahme isoliert sein. Da es sich bei dem Streckverfahren nach der Erfindung in der Hauptsache um Rohre von geringerer Wandstärke handelt, so erfordert das Weichglühen nur sehr geringe Zeit. Man kommt also mit einer verhältnismäßig kurzen Baulänge des Ofens aus. ° Das Verfahren kann auch-zur Herstellung von vollen Werkstücken Anwendung finden.Because the stretched and elongated workpiece is the stretching device leaves freely and at a relatively low speed, one can do the heat treatments following the stretching process to eliminate stretching stresses and serve the extension hardness, couple with the extension in a most expedient manner. For this purpose, the stretching device is left, for example, in the manufacture of pipes exiting the stretched tube into a short distance from the stretching device installed tube annealing furnace run and thus uses the feed devices of the stretching device and the stretching process for this, the stretched tubes from the stretching device directly to be conveyed through the annealing furnace. Such a suitable for the purpose of the invention, Furnace equipped with electrical resistance heating can, as it has a cross-section has to accommodate only one tube, be of a very simple design. Moving the Pipes in the furnace can take place, for example, on a rod or a wire rope, one end to the mandrel head and through the tubular annealing furnace, with the other end attached outside the annealing furnace with a certain tensile stress are. The suitably made of heat-resistant and heat-resistant materials The support rod or the support cable can be insulated against heat absorption with heat protection means be. Since it is in the stretching process according to the invention in the main Tubes with a smaller wall thickness are involved, so the soft annealing is required only very little time. So you come with a relatively short overall length of the Oven off. ° The process can also be used to manufacture full workpieces Find.

Claims (1)

PATENTANSPRUCH: Verfahren zum Ausglühen von abschnittweise gestreckten Rohren nach Patent 603 138, dadurch gekennzeichnet, daß man den die- Streckvorrichtung verlassenden ausgestreckten Teil des Werkstücks zur anschließenden Wärmebehandlung in einen Glühofen laufen läßt und die Vorschubeinrichtungen derStreckvorrichtung und den Streckvorgang selbst benutzt, die ausgestreckten Rohre aus der Streckvorrichtung unmittelbar durch den Glühofen zu befördern.Claim: Process for annealing tubes stretched in sections according to Patent 603 138, characterized in that the stretched part of the workpiece leaving the stretching device is allowed to run into an annealing furnace for subsequent heat treatment and the feed devices of the stretching device and the stretching process itself are used to extend the stretched-out tubes the stretching device directly through the annealing furnace.
DES113627D 1933-04-12 1933-04-13 Process for annealing pipes stretched in sections Expired DE622162C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT622162X 1933-04-12

Publications (1)

Publication Number Publication Date
DE622162C true DE622162C (en) 1935-11-21

Family

ID=3677666

Family Applications (1)

Application Number Title Priority Date Filing Date
DES113627D Expired DE622162C (en) 1933-04-12 1933-04-13 Process for annealing pipes stretched in sections

Country Status (1)

Country Link
DE (1) DE622162C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE927095C (en) * 1952-03-27 1955-04-28 Friedrich Klopp Device for surface hardening, in particular of spindles or shafts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE927095C (en) * 1952-03-27 1955-04-28 Friedrich Klopp Device for surface hardening, in particular of spindles or shafts

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