DE361149C - Sealing process for cast parts - Google Patents

Sealing process for cast parts

Info

Publication number
DE361149C
DE361149C DEL53201D DEL0053201D DE361149C DE 361149 C DE361149 C DE 361149C DE L53201 D DEL53201 D DE L53201D DE L0053201 D DEL0053201 D DE L0053201D DE 361149 C DE361149 C DE 361149C
Authority
DE
Germany
Prior art keywords
sealing process
cast parts
cast
pores
pressing
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
DEL53201D
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.)
Luftschiffbau Zeppelin GmbH
Original Assignee
Luftschiffbau Zeppelin GmbH
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 Luftschiffbau Zeppelin GmbH filed Critical Luftschiffbau Zeppelin GmbH
Priority to DEL53201D priority Critical patent/DE361149C/en
Application granted granted Critical
Publication of DE361149C publication Critical patent/DE361149C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002Cleaning, working on castings
    • B22D31/005Sealing or impregnating porous castings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Material Composition (AREA)

Description

Äbdichtungsverfahren für Gußteile. Die Erfindung betrifft ein Verfahren zur Behandlung fertiggegossener Arbeitsstücke, deren Wände je nach dem Verwendungszwecke des Stückes für Flüssigkeiten, Luft oder Gas undurchlässig sein sollen. Bekanntlich ergibt es sich, daß Gußkörper nicht einwandfrei dicht halten, da sie stets porös sind oder sonst undichte Stellen in den Wandungen aufweisen. Zur Prüfung auf Dichtigkeit füllte man früher die Hohlräume der Gußkörper mit Flüssigkeit, Luft oder Gas, welches unter Druck gesetzt wurde, was j e nach Zweckmäßigkeit entweder beim Rohgußstück oder nach teilweiser oder abgeschlossener Bearbeitung stattfinden konnte. Später ging -man dazu über, dem Druckmittel irgendeinen Stoff beizumengen, um mit dem Abpressen gleichzeitig eine Abdichtung der Poren oder blasigen Stellen zu bewirken. Mit den bisher geübten Dichtungsverfahren wurde jedoch dem Werkstück oft schon durch die Vorarbeiten, die verschiedentlich nötig sind, Schaden zugefügt, wie z. B. infolge des beim Abpressen mit Loten nötigen Erhitzen auf hohe Temperaturen. Andere Dichtungsmittel, die man bisweilen anwendete, verletzen, nachdem sie sich in die Poren oder undichten Stellen festgesetzt haben, beim Bearbeiten die Werkzeuge.Sealing process for cast parts. The invention relates to a method for the treatment of finished cast work pieces, the walls of which depend on the intended use of the piece should be impermeable to liquids, air or gas. As is well known it turns out that cast bodies do not hold perfectly tight because they are always porous or otherwise have leaks in the walls. To check for leaks In the past, the cavities of the cast bodies were filled with liquid, air or gas, whichever was put under pressure, which depending on expediency either with the raw casting or could take place after partial or completed processing. later went over to adding some substance to the pressure medium in order to cope with the pressing at the same time to seal the pores or blistered areas. With the Sealing methods practiced up to now, however, have often already been applied to the workpiece by the Preliminary work that is necessary on various occasions, inflicted damage, such as B. as a result the heating to high temperatures required when pressing with solder. Other sealants, which have been used at times, injure themselves after they get into the pores or leak Make fixed when editing the tools.

Der Erfindung gemäß wird als Abpreßmittel flüssiges Zellon verwendet. Dieser Stoff hat die Eigenschaft, sich nur in Azeton zu lösen, in Wasser lediglich aufzuquellen und dabei die Poren nur um so leichter zu schließen; das Zellon ist daher für den hier angezielten Zweck besonders geeignet. Es wird bei geeigneter Zusammensetzung nie spröde und ermöglicht infolgedessen eine unbeschränkte Haltbarkeit der Dichtung. Bei einer späteren Bearbeitung des Gußstückes ist weder ein Ausspringen des Zellons noch eine Beschädigung der Werkzeuge zu befürchten.According to the invention, liquid Zellon is used as the pressing agent. This substance has the property of only dissolving in acetone, only in water to swell and thereby to close the pores all the more easily; the cellon is therefore particularly suitable for the purpose aimed at here. It will be more appropriate Composition never brittle and consequently allows an unlimited shelf life the seal. When the casting is machined later, there is no jumping out of the cellon still to fear damage to the tools.

Das angemeldete Abdichtungsverfahren ist nicht nur bei gegossenen, sondern auch bei andersartig hergestellten Arbeitsstücken anwendbar.The registered sealing process is not only applicable to cast, but also applicable to workpieces manufactured in a different way.

Claims (1)

PATENT-A11,TSPRUCFI Abdichtungsverfahren für Gußteile o. dgl., dadurch gekennzeichnet, daß als Abpreßmittel flüssiges, in Azeton gelöstes Zellon verwendet wird.PATENT-A11, TSPRUCFI sealing process for cast parts o. The like., Thereby characterized in that liquid Zellon dissolved in acetone is used as a pressing agent will.
DEL53201D 1921-05-27 1921-05-27 Sealing process for cast parts Expired DE361149C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL53201D DE361149C (en) 1921-05-27 1921-05-27 Sealing process for cast parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL53201D DE361149C (en) 1921-05-27 1921-05-27 Sealing process for cast parts

Publications (1)

Publication Number Publication Date
DE361149C true DE361149C (en) 1922-10-10

Family

ID=7275218

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL53201D Expired DE361149C (en) 1921-05-27 1921-05-27 Sealing process for cast parts

Country Status (1)

Country Link
DE (1) DE361149C (en)

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