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DE656830C - Device for hardening the inner wall of pipes and similar hollow bodies - Google Patents

Device for hardening the inner wall of pipes and similar hollow bodies

Info

Publication number
DE656830C
DE656830C DEB166438D DEB0166438D DE656830C DE 656830 C DE656830 C DE 656830C DE B166438 D DEB166438 D DE B166438D DE B0166438 D DEB0166438 D DE B0166438D DE 656830 C DE656830 C DE 656830C
Authority
DE
Germany
Prior art keywords
hardening
wall
pipes
hollow bodies
pipe
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
DEB166438D
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.)
FRANZ BARK
Original Assignee
FRANZ BARK
Publication date
Priority to DEB166438D priority Critical patent/DE656830C/en
Application granted granted Critical
Publication of DE656830C publication Critical patent/DE656830C/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
    • C21D9/08Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085Cooling or quenching

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

Vorrichtung zum Härten der Innenw4z .von Rohren und ähnlichen Hohlkörpern Es ist bekannt, Hohlkörper dadurch zu härten, daß kaltes Wasser ,an die Innenflächen gespritzt wird. Die hierzu benutzten Einrichtungen eignen sich jedoch nur zum Härten von kurzen Hohlkörpern, in die das Spülrohr geschoben ist, ohne daß während des Härtevorgangs das Spülrohr oder der Hohlkörper seine Lage ändert.Device for hardening the inner cylinder of pipes and similar hollow bodies It is known to harden hollow bodies by applying cold water to the inner surfaces is injected. However, the facilities used for this purpose are only suitable for hardening of short hollow bodies into which the flush pipe is pushed without being during the Hardening process, the flush pipe or the hollow body changes its position.

Die Erfindung betrifft eine Vorrichtung zum Härten der Innenwandung von Rohren und ähnlichen Hohlkörpern .durch Beaufschlagung mit einer Härteflüssigkeit und besteht darin, daß innerhalb eines Flüssigkeitsbehälters ein am oberen, geschlossenen Ende mit einer Ringbrause o. dgl. versehenes Steigrohr angeordnet ist, :durch welches vermittels einer an einer Saugleitung angeschlossenen Pumpe oder einer sonstigen Vorrichtung die sich im unteren Teil des Behälters sammelnde, mit dem Härtegut nicht in Berührung stehende Härteflüssigkeit über ein Verbindungsrohr gegen die Innenfläche des von oben nach unten teleskopartig über das Steigrohr hinweg bewegten, .auf Härtetemperatur befindlichen Rohres geleitet wird. Dadurch ivzrd ein spannungsfreies Härten jeglicher Rohre ermöglicht.The invention relates to a device for hardening the inner wall of pipes and similar hollow bodies .by applying a hardening liquid and consists in that inside a liquid container a closed at the top End with a ring shower o. The like. Provided riser is arranged, through which by means of a pump connected to a suction line or another Device that collects in the lower part of the container, not with the material to be hardened hardening liquid in contact against the inner surface via a connecting pipe of the telescopically moved from top to bottom over the riser pipe,. to hardening temperature located pipe is passed. As a result, tension-free hardening of any Pipes made possible.

In der Zeichnung ist eine beispielsweise Ausführungsform des Erfindungsgegenstandes in Ansicht und teilweisem Schnitt veranschaulicht.The drawing shows an example embodiment of the subject matter of the invention illustrated in elevation and partial section.

In dem Kühlmittelbehälter a ist .ein dem Durchmesser des Hohlkörpers b entsprechend ausgebildetes Rohr c auswechselbar an das Rohr d angeschlossen, in welches -eine Saug-und Druckpumpe s eingebaut ist, die das Kühlmittel aus -dem Behälter a mittels einer Saugleitung ansaugt und durch die Leitung d in das Rohr c drückt. Dieses ist am oberen Ende durch einen Deckel abgeschlossen und auf seinem oberen Umfang mit Austrittslöchern f versehen, durch die das Kühlmittel austritt und an die Innenwandung des übergeschobenen und sich allmählich senkenden Hohlkörpers b gespritzt wird. Unterhalb der Löcher f kann um das Rohr c ein Trichter oder Schirm g mit kegeistumpfförmiger Fläche gelegt sein, der das ausspritzende Kühlmittel nach der Wandung des Werkstückes leitet und ein Herabfließen an der Wandung bewirkt. Dadurch wird das allmählich sich senkende Werkstück innen gleichmäßig abgekühlt und gehärtet, ohne daß die Außenwandung mit dem Kühlmittel in Berührung kommt. An dem Rohr c und dem Schirm g können geeignete Führungen h und i zum Führen des Werkstückes angebracht sein. Ebenso kann das Steigrohr c auch an eine Druckleitung angeschlossen sein. Der Stand des Kühlmittels in dem Behälter a ist so niedrig, daß das Werkstück nicht mit dem stehenden oder ruhenden Kühlmittel im Behälter in Berührung kommt und außen nur von Luft umgeben ist, wobei der im Innern sich bildende Dampf frei entweichen kann. Durch diese Art Härtung sind Spannungen in dem zu härtenden Körper kaum vorhanden und Rissebildungen ausgeschlossen, da ein allmählicher Härteübergang von innen nach außen eintritt.In the coolant tank a is .ein the diameter of the hollow body b appropriately designed tube c interchangeably connected to tube d, in which -a suction and pressure pump s is installed, which the coolant from the container a sucks in by means of a suction line and pushes it through the line d into the pipe c. This is closed at the upper end by a lid and on its upper end Perimeter provided with outlet holes f through which the coolant exits and on the inner wall of the slipped over and gradually lowering hollow body b is injected. A funnel or screen can be placed around the tube c below the holes f g be laid with a frustoconical surface, which is followed by the ejecting coolant the wall of the workpiece and causes it to flow down the wall. As a result, the gradually lowering workpiece is evenly cooled on the inside and hardened without the outer wall coming into contact with the coolant. At the tube c and the screen g can have suitable guides h and i for guiding the workpiece to be appropriate. Likewise, the riser pipe c can also be connected to a pressure line be. The level of the coolant in the container a is so low that the workpiece does not come into contact with the standing or resting coolant in the container and is surrounded only by air on the outside, whereby the steam forming inside is free can escape. Due to this type of hardening, there are tensions in the body to be hardened hardly present and cracking excluded, as there is a gradual transition in hardness enters from the inside out.

Claims (1)

PATENTANSPRÜCHE: i. Vorrichtung zum Härten der Innenwandung von Rohren und ähnlichen Hohlkörpern durch Beaufschlagung mit einer Härteflüssigkeit, dadurch gekennzeichnet, daß innerhalb eines Flüssigkeitsbehälters (a) ein am oberen, geschlossenen Ende mit einer Ringbrause (f) versehenes Steigrohr (c) angeordnet ist, durch welches vermittels einer an eine Saugleitung angeschlossenen Pumpe (e) die sich, im unteren Teil des Behälters (a) sammelnde, mit dem Härtegut nicht in Berührung stehende Härteflüssigkeit über ein Verbindungsrohr (d) gegen die Innenfläche des von oben nach unten teleskopartig über das Steigrohr (c) hinweg bewegten, auf Härtetemperatur befindlichen Rohres (b) geleitet wird. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß das Steigrohr (c) .an eine Druckleitung angeschlossen ist.PATENT CLAIMS: i. Device for hardening the inner wall of pipes and similar hollow bodies by applying a hardening liquid, thereby characterized in that within a liquid container (a) a closed at the top End with a ring shower (f) provided riser pipe (c) is arranged through which by means of a pump (s) connected to a suction line, which are located in the lower Part of the container (a) that collects hardening liquid that is not in contact with the material to be hardened telescopic from top to bottom via a connecting pipe (d) against the inner surface of the The pipe moved over the riser pipe (c) and is at the hardening temperature (b) is directed. Device according to claim i, characterized in that the Riser pipe (c). Is connected to a pressure line.
DEB166438D Device for hardening the inner wall of pipes and similar hollow bodies Expired DE656830C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB166438D DE656830C (en) Device for hardening the inner wall of pipes and similar hollow bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB166438D DE656830C (en) Device for hardening the inner wall of pipes and similar hollow bodies

Publications (1)

Publication Number Publication Date
DE656830C true DE656830C (en) 1938-04-14

Family

ID=7005669

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB166438D Expired DE656830C (en) Device for hardening the inner wall of pipes and similar hollow bodies

Country Status (1)

Country Link
DE (1) DE656830C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918641C (en) * 1950-12-06 1954-09-30 Basf Ag Compensation process for long pipes, especially for high pressures
DE945930C (en) * 1949-01-01 1956-07-19 Gewerkschaft Reuss Process for the production of wear-resistant pipes for the hydraulic and pneumatic conveying of bulk goods
DE962439C (en) * 1954-02-03 1957-04-25 Mannesmann Ag Method and device for the distortion-free hardening of long pipes
DE970358C (en) * 1951-07-26 1958-09-11 Basf Ag Process for quenching long, thick-walled hollow bodies
DE973247C (en) * 1949-11-15 1959-12-31 Gibone Anstalt Process for hardening hollow bodies

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945930C (en) * 1949-01-01 1956-07-19 Gewerkschaft Reuss Process for the production of wear-resistant pipes for the hydraulic and pneumatic conveying of bulk goods
DE973247C (en) * 1949-11-15 1959-12-31 Gibone Anstalt Process for hardening hollow bodies
DE918641C (en) * 1950-12-06 1954-09-30 Basf Ag Compensation process for long pipes, especially for high pressures
DE970358C (en) * 1951-07-26 1958-09-11 Basf Ag Process for quenching long, thick-walled hollow bodies
DE962439C (en) * 1954-02-03 1957-04-25 Mannesmann Ag Method and device for the distortion-free hardening of long pipes

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