DE436092C - Process for the protection of metal objects - Google Patents

Process for the protection of metal objects

Info

Publication number
DE436092C
DE436092C DES69320D DES0069320D DE436092C DE 436092 C DE436092 C DE 436092C DE S69320 D DES69320 D DE S69320D DE S0069320 D DES0069320 D DE S0069320D DE 436092 C DE436092 C DE 436092C
Authority
DE
Germany
Prior art keywords
metal objects
protection
metal
protective coating
high temperatures
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
DES69320D
Other languages
German (de)
Inventor
Dr Phil Georg Masing
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens 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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES69320D priority Critical patent/DE436092C/en
Application granted granted Critical
Publication of DE436092C publication Critical patent/DE436092C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Description

Verfahren zum Schutz von Metallgegenständen. Es liegt hätifig die Aufgabe vor, Metallgegenstände, z. B. Gußformen, Thermoeleinente, die in flüssiges Metall getaucht werden, usw., vor dem Angriff der mit ihnen in z# Berührung kommenden flüssigen Metalle zu schützen. Man macht dies vielfach durch Aufbringen eines Schutzanstriches auf den Metallgegenstand. Hierbei tritt jedoch meist der Nachteil auf, daß die Schutzanstriche bei den hohen Temperaturen Sprünge erhalten, so daß das geschmolzene Metall trotz des An-,#triches Zutritt zu dem Metallgegenstand erlangen kann.Process for protecting metal objects. It is often the one Task before, metal objects, z. B. molds, thermal elements that are in liquid Metal, etc., before attack by those who come into contact with them to protect liquid metals. This is often done by applying a protective coating on the metal object. However, this usually has the disadvantage that the protective coatings cracks obtained at the high temperatures, so that the molten metal in spite of des an -, # triches can gain access to the metal object.

Die Erfindung liegt nun in der Erkenntnis, daß sich derartige Sprünge vollständig vermeiden lassen, wenn als Schutzanstrich eine Masse gewählt wird, die bei den in Betracht kommenden hohen Temperaturen erweicht. Eine solche Masse zeigt einerseits naturgemäß wenig Neigung zum Springen, anderseits fließen etwa auftretende Lücken von selbst wieder zu.The invention lies in the knowledge that such jumps Can be avoided completely if a protective coating is chosen that softens at the high temperatures involved. Such a mass shows on the one hand, naturally little tendency to jump, on the other hand, any occurring flow Gaps close again by themselves.

Als solcher Schutzanstrich kann z. B. ein Gemenge von drei Teilen leichtscbmelzendem Bleiglas und einem Teil Tonerde oder, als Schutz gegen flüssiges Aluminium, ein Ge- menge von leicht schmelzbarem Milchglas und von Tonerde in gleichen Teilen dienen. Das Gemenge kann mit Wasser oder auch mit etwas Wasserglas zu einem Brei angerührt und aufgestrichen werden. Es haftet nach dem Trocknen genfigend fest. Der angestrichene Gegenstand kann ohne vorheriges Erhitzen benutzt werden. Der Anstrich sintert dann bei der Benutzung von selbst und bildet einen emailartigen Überzug. Er kann aber auch vor der Ingebrauchnahme bis zum Sintern erhitzt werden.As such a protective coating, for. B. serve a mixture of three parts leichtscbmelzendem lead glass and a portion of alumina or, as a protection against liquid aluminum, a mixture of fusible glass, and alumina in equal parts. The mixture can be mixed with water or with a little water glass to a pulp and spread on. It adheres sufficiently after drying. The painted object can be used without prior heating. The paint then sinters by itself with use and forms an enamel-like coating. However, it can also be heated until sintering before it is used.

Claims (1)

PATEINT-ANSPRUCH: Verfahren zum Schutz von Metallgegenständen, die mit niedriger schmelzenden Metallen in Berührung kommen, dadurch gekennzeichnet, daß die Metallgegenstände mit einem Schutzanstrich versehen werden, der bei den in Betracht kommenden hohen Temperaturen erweicht.PATEINT CLAIM: Process for the protection of metal objects that come into contact with lower melting metals, characterized by that the metal objects are provided with a protective coating that is used in the under consideration high temperatures softens.
DES69320D 1925-03-20 1925-03-20 Process for the protection of metal objects Expired DE436092C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES69320D DE436092C (en) 1925-03-20 1925-03-20 Process for the protection of metal objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES69320D DE436092C (en) 1925-03-20 1925-03-20 Process for the protection of metal objects

Publications (1)

Publication Number Publication Date
DE436092C true DE436092C (en) 1926-10-23

Family

ID=7500900

Family Applications (1)

Application Number Title Priority Date Filing Date
DES69320D Expired DE436092C (en) 1925-03-20 1925-03-20 Process for the protection of metal objects

Country Status (1)

Country Link
DE (1) DE436092C (en)

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