DE573459C - Process for increasing the service life of copper molds - Google Patents

Process for increasing the service life of copper molds

Info

Publication number
DE573459C
DE573459C DEV27733D DEV0027733D DE573459C DE 573459 C DE573459 C DE 573459C DE V27733 D DEV27733 D DE V27733D DE V0027733 D DEV0027733 D DE V0027733D DE 573459 C DE573459 C DE 573459C
Authority
DE
Germany
Prior art keywords
molds
service life
copper
increasing
copper molds
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
DEV27733D
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.)
Vereinigte Stahlwerke AG
Original Assignee
Vereinigte Stahlwerke AG
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 Vereinigte Stahlwerke AG filed Critical Vereinigte Stahlwerke AG
Priority to DEV27733D priority Critical patent/DE573459C/en
Application granted granted Critical
Publication of DE573459C publication Critical patent/DE573459C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/101—Moulds

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)

Description

Verfahren zur Erhöhung der Lebensdauer kupferner Kokillen Es ist bereits vorgeschlagen worden, eiserne Kokillen für Schleudergußrohre auszuglühen, um ihnen alle Eigenspannungen zu nehmen, jedoch kann: dadurch. das Auftreten von neuen Spannungen auf die Dauer nicht verhütet werden.Procedure for increasing the service life of copper ingot molds It is already it has been proposed to anneal iron molds for centrifugally cast pipes in order to make them to take away all residual stresses, but can: thereby. the appearance of new tensions cannot be prevented in the long run.

Die Erfindung besteht darin, daß. kupferne Kokillen nach mechanischer Bearbeitung auf etwa 200"C erhitzt werden, zweckmäßig unter Verwendung von die Kokillen einschließenden Müffeln. Solche geglühten Kupferkokillen zeichnen sich nun vor anderen Kokillen dadurch aus, daß im Gebrauche unzulässige Spannungen nicht auftreten, weil die hohe Wärmeleitfähigkeit des Kupfers eine zu große Erhitzung unmöglich macht.The invention consists in that. copper molds after mechanical Machining to be heated to about 200 "C, expediently using the molds including muffles. Such annealed copper molds now stand out in front of others Mold from the fact that inadmissible stresses do not occur in use because the high thermal conductivity of copper makes excessive heating impossible.

@Es hat sich gezeigt, daß die Kokillen, welche auf solche Weise behandelt worden sind, eine Lebensdauer haben, welche die Lebensdauer gewöhnlicher Kokillen mindestens um das Doppelte übertrifft.@It has been shown that the molds treated in such a way have a service life which is the same as that of ordinary molds at least twice as much.

Die Behandlung lohnt sich für. alle Arten von Kupferkokillen und alle Arbeitsweisen. Die Kokillen können also aus gewöhnlichen. Kupferrohren oder aus Elektrolytkupfer biestehen und durch Gießen, .auch nach dem Schleudergußverfahren, Bohren aus dem Vollen, Lochen, Walzen, Schmieden, Ziehen, Pressen, Recken; Stauchen,' Schleifen, Polieren und sonstige Verfahren gewonnen 5ehi.The treatment is worth it for. all kinds of copper molds and all Working methods. The molds can therefore be made from ordinary. Copper pipes or from Electrolytic copper and by casting, .also after the centrifugal casting process, Drilling from solid, punching, rolling, forging, drawing, pressing, stretching; Upsetting, ' Grinding, polishing and other processes won 5ehi.

Geeignetenfalls wird die Wärmebehandlung mehrmals wiederholt, und zwar sowohl nach Durchführung einzelner Btearbeitungsstufenals auch nach Fertigstellung der Kokillen. Die Wärme kann der T:okille auch nur von der Innenseite zugeführt werden, wohei die Außfenseite gegen Wärmeverluste mehr oder weniger geschützt oder auch gekühlt werden kann.If appropriate, the heat treatment is repeated several times, and both after completion of individual processing stages and after completion the molds. The heat can also only be supplied to the tablet from the inside where the outside is more or less protected against heat loss or can also be cooled.

Claims (1)

PATr,NTANSPIZÜCIIE: i. Verfahren zur Erhöhung der Lebensdauer kupferner K okilleri zum. Herstellen von Schleudergußrohrexi, dadurch gekennzeichnet, daß die Kokillen nach mechanischer Bearbeitung auf ietwa zoo° C erhitzt werden, zweckmäßig unter Verwendung von die Kokillen einschließenden Muffeln. z. Kupferkokille, die nach dem Verfahren gemäß Anspruch i behandelt ist.PATR, NTANSPIZÜCIIE: i. Process to increase the service life of copper K okilleri for. Manufacture of centrifugal cast tubes, characterized in that the molds are heated to about zoo ° C after mechanical processing, expediently using muffles enclosing the molds. z. Copper mold that is treated by the method according to claim i.
DEV27733D 1932-01-24 1932-01-24 Process for increasing the service life of copper molds Expired DE573459C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV27733D DE573459C (en) 1932-01-24 1932-01-24 Process for increasing the service life of copper molds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV27733D DE573459C (en) 1932-01-24 1932-01-24 Process for increasing the service life of copper molds

Publications (1)

Publication Number Publication Date
DE573459C true DE573459C (en) 1933-04-01

Family

ID=7583619

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV27733D Expired DE573459C (en) 1932-01-24 1932-01-24 Process for increasing the service life of copper molds

Country Status (1)

Country Link
DE (1) DE573459C (en)

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