DE477721C - Process for enamelling cast and wrought iron pieces - Google Patents
Process for enamelling cast and wrought iron piecesInfo
- Publication number
- DE477721C DE477721C DEI32995D DEI0032995D DE477721C DE 477721 C DE477721 C DE 477721C DE I32995 D DEI32995 D DE I32995D DE I0032995 D DEI0032995 D DE I0032995D DE 477721 C DE477721 C DE 477721C
- Authority
- DE
- Germany
- Prior art keywords
- enamelling
- vacuum
- cast
- wrought iron
- iron pieces
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
Description
Verfahren zum Emaillieren von guß- und schmiedeeisernen Stücken Das gleichmäßige Emaillieren von guß-und schmiedeeisernen Stücken bereitet große Schwierigkeiten und wird durch hohen Ausfall stark verteuert, weil die guß- oder schmiedeeisernen Stücke stets mehr oder weniger porös sind. Werden nun derartige Stücke mit Fritte bestrichen und gebrannt, so dehnt sich die unter der Fritte eingeschlossene Luft aus, wirft Blasen oder tritt durch kleine öffnungen aus. Hierdurch wird der Verband der Emaille mit dem Guß unterbrochen, es entstehen Blasen oder kleine Löcher, so daß das Gußstück nicht verwendet «erden kann. Derartige Fehlstellen verraten sich oft erst bei der Prüfung vermittels elektrischen Stromes.Method of enamelling cast and wrought iron pieces Uniform enamelling of cast and wrought iron pieces causes great difficulties and is made much more expensive by high failure, because the cast or wrought iron Pieces are always more or less porous. Now such pieces are made with frit coated and fired, the air enclosed under the frit expands blows out, bubbles or comes out through small openings. This creates the association the enamel is interrupted with the casting, there are bubbles or small holes, so that the casting cannot be used. Such defects reveal themselves often only when testing by means of electric current.
Es wurde nun gefunden, daß man eine einwandfreie Emaillierung erzielen kann, wenn man die in den Poren der Gußstücke befindliche Luft vor dem Brennen vermittels Vakuum entfernt.It has now been found that perfect enamelling can be achieved can, if one mediates the air in the pores of the castings before firing Vacuum removed.
Praktisch verfährt man in der Weise, daß man beispielsweise das zu emaillierende Gußstück mit Fritte überzieht und nun einige Zeit in ein Vakuum stellt. Beim nachfolgenden Drauflassen von atmosphärischem Druck füllen sich die Poren mit Fritte. Die Emailleschicht bildet nach dem Brennen einen sehr festen, blasenfreien, lückenlosen Verband mit dem Eisen, der eine vorzeitige Abnutzung des Gußstückes ausschließt. Das Verfahren kann wiederholt werden.In practice, one proceeds in such a way that, for example, one does enamelling casting covered with frit and now for some time in a vacuum. When atmospheric pressure is subsequently released, the pores also fill up Frit. After firing, the enamel layer forms a very solid, bubble-free, gapless association with the iron, which causes premature wear of the casting excludes. The procedure can be repeated.
Man kann aber auch das zu emaillierende Gußstück zunächst ins Vakuum bringen und im Vakuum selbst in geeigneter Weise (z. B. durch Untertauchen der zu emaillierenden Flächen unter die Fritte oder durch Spritzverfahren usw.) mit Fritte überziehen und sodann das Vakuum aufheben, atmosphärischen oder höheren Druck drauflassen und dann brennen.But you can also first put the casting to be enamelled in a vacuum bring and in the vacuum itself in a suitable manner (e.g. by submerging the to enamelling surfaces under the frit or by spraying, etc.) with frit cover and then release the vacuum, leave on atmospheric or higher pressure and then burn.
Eine derartig aufgetragene Emaille hält bedeutend besser als nach dem alten Verfahren; denn bei diesem sind stets in Fritte und Emaille Luftblasen eingeschlossen, und diese veranlassen Haarrisse und Abblätterungen und dadurch vorzeitige Abnutzung der emaillierten Gegenstände, Von ganz besonderer Wichtigkeit wird das Verfahren, wenn es sich darum handelt, bereits gebrauchte Gegenstände oder emailliert gewesene, beschädigte und gebrauchte Gußstücke zu emaillieren. Derartige Stücke enthalten in den Poren stets Verunreinigungen (Substanzreste usw.), die ein Emaillieren unmöglich machen, selbst häufig nach wiederholtem Abdrehen. Nach dem vorliegenden Verfahren gelingt es nun leicht, diese Stoffreste aus den Poren zu entfernen, wenn man unter abwechselnder Anwendung von Druck, Vakuum und Wärme die Poren vor dem eigentlichen Emaillieren mit geeigneten Flüssigkeiten, Lösungen usw, ausspült, reinigt und trocknet und dann, wie beschrieben, unter Anwendung von Vakuum emailliert.Enamel applied in this way lasts significantly better than after the old procedure; because with this there are always air bubbles in the frit and enamel included, and these cause hairline cracks and peeling and thereby premature Wear and tear on the enamelled objects, this becomes of particular importance Procedure when it comes to items that have already been used or enamelled Enameling past, damaged and used castings. Such pieces always contain impurities in the pores (substance residues, etc.) that could cause enameling impossible, even after repeated twisting. According to the present Method it is now easy to remove this material residue from the pores, if alternately using Pressure, vacuum and heat die Pores before the actual enamelling with suitable liquids, solutions, etc., rinses, cleans and dries and then using vacuum as described enamelled.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI32995D DE477721C (en) | 1927-12-20 | 1927-12-20 | Process for enamelling cast and wrought iron pieces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI32995D DE477721C (en) | 1927-12-20 | 1927-12-20 | Process for enamelling cast and wrought iron pieces |
Publications (1)
Publication Number | Publication Date |
---|---|
DE477721C true DE477721C (en) | 1929-06-12 |
Family
ID=7188289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI32995D Expired DE477721C (en) | 1927-12-20 | 1927-12-20 | Process for enamelling cast and wrought iron pieces |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE477721C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1086154B (en) * | 1951-02-14 | 1960-07-28 | J & Otto Krebber | Process, device and system for preparing paint surfaces on steel or iron by removing invisible moisture |
WO1985002206A1 (en) * | 1983-11-12 | 1985-05-23 | Joh. Vaillant Gmbh U. Co. | Process for enamelling an object and device for implementing such process |
-
1927
- 1927-12-20 DE DEI32995D patent/DE477721C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1086154B (en) * | 1951-02-14 | 1960-07-28 | J & Otto Krebber | Process, device and system for preparing paint surfaces on steel or iron by removing invisible moisture |
WO1985002206A1 (en) * | 1983-11-12 | 1985-05-23 | Joh. Vaillant Gmbh U. Co. | Process for enamelling an object and device for implementing such process |
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