DE4021466A1 - Restoring damaged areas of enamel layer in steel tanks - by spraying abrasive agent, esp. corundum, applying protection layer by plasma or detonation spraying etc. - Google Patents
Restoring damaged areas of enamel layer in steel tanks - by spraying abrasive agent, esp. corundum, applying protection layer by plasma or detonation spraying etc.Info
- Publication number
- DE4021466A1 DE4021466A1 DE4021466A DE4021466A DE4021466A1 DE 4021466 A1 DE4021466 A1 DE 4021466A1 DE 4021466 A DE4021466 A DE 4021466A DE 4021466 A DE4021466 A DE 4021466A DE 4021466 A1 DE4021466 A1 DE 4021466A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- esp
- pores
- corundum
- metallic
- 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.)
- Withdrawn
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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
-
- 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
- C23D13/00—After-treatment of the enamelled articles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Regeneration von Schadstellen der Emaille-Schicht in emaillierten Tanks aus Stahl, für welche die Bestimmungen der Lebensmittel industrie gelten.The invention relates to a method for the regeneration of Damaged areas of the enamel layer in enamelled tanks made of steel, for which the provisions of the food industry apply.
Bei emaillebeschichteten Tanks aus Stahl geschieht es häufig, daß die Emaille-Schicht in bestimmten Bereichen abgestoßen oder in sonstiger Weise beschädigt wird, so daß Schadstellen entstehen und der Tanks als solcher zur Aufbewahrung von Lebensmitteln oder dergleichen nicht mehr geeignet ist.It happens with enamel-coated steel tanks often that the enamel layer in certain areas repelled or otherwise damaged, so that damage occurs and the tanks as such No more storing food or the like suitable is.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren anzugeben, mittels dessen die entsprechenden Schadstellen beseitigt werden und der Tank seiner zweckgemäßen Bestimmung wieder zugeführt werden kann. The invention is based on this prior art the task of specifying a method by means of the corresponding damaged areas are eliminated and the tank returned to its intended purpose can be.
Dadurch daß die Schadstelle mit Strahlmittel, insbesondere Korund, gestrahlt und aufgerauht wird, erfolgt praktisch eine Haftgrundvorbereitung, die das nachträgliche Auftragen der metallischen Deckschicht mittels thermischer Spritzver fahren ermöglicht und eine intensive Haftung der Deckschicht auf dem Untermaterial gewährleistet.Characterized in that the damaged area with blasting media, in particular Corundum, blasted and roughened is practically done a primer preparation, which the subsequent application the metallic cover layer by means of thermal spraying allows driving and an intensive adhesion of the top layer guaranteed on the base material.
Da die Deckschicht üblicherweise mikroporös ist, ist eine nachfolgende Behandlung oder Bearbeitung der Deckschicht erforderlich, wozu eine mechanische Verdichtung oder ein Tränken mit Versieglern vorgesehen werden kann. Bei einer mechanischen Verdichtung werden die Poren durch Umformung des Materials geschlossen, während bei einem Tränken mit Versiegler das Versieglungsmaterial in die Poren eindringt und dort gegen mechanische Reinigungsmittel oder dergleichen geschützt angeordnet ist, so daß er dauerhaft die Poren verschließen kann.Since the top layer is usually microporous, one is subsequent treatment or processing of the top layer required, for which a mechanical compression or a Watering with sealers can be provided. At a mechanical compression, the pores are formed of the material closed while having a soak Sealer the sealing material penetrates into the pores and there against mechanical cleaning agents or the like is arranged so that it permanently protects the pores can close.
Eine bevorzugte Weiterbildung wird darin gesehen, daß die örtlich neben der Schadstelle befindlichen Bereiche eben falls mit scharfkantigem Strahlmittel gestrahlt werden, und zwar insbesondere die Randfläche der noch an die Tank wandung haftenden Emaille-Schicht in einer Entfernung von 2 bis 30 mm vom Schadstellenrand aufgerauht wird.A preferred further development is seen in the fact that areas located next to the damaged area if blasting is carried out with a sharp-edged abrasive, specifically the edge of the tank Adhesive layer adhering to the wall at a distance of Is roughened 2 to 30 mm from the edge of the damaged area.
Die entsprechende Fläche des Tanks im Bereich der Schad stelle kann durch Strahlen mit dem Schleuderrad, mit Druck luft/Strahlmittelgemisch oder Druckluft/Strahlmittel/Wasser gemisch aufgerauht werden. Durch die Einbeziehung der Rand flächen der noch haftenden Emaille-Schicht wird ein Über deckungsbereich geschaffen, der Undichtigkeiten im Bereich der Anschlußstellen vermeidet.The corresponding area of the tank in the area of damage can be blasted with the blast wheel, with pressure air / blasting media mixture or compressed air / blasting media / water be roughened. By including the edge areas of the still adhering enamel layer becomes an over created coverage area, the leaks in the area avoiding the connection points.
Die im Wege des thermischen Spritzverfahrens aufgebrachten Deckschichten können beispielsweise durch Tiegelspritzen, Pulver-Flamm-, Draht-Flamm-, Zweidraht-Lichtbogen-, Mehr draht-Lichtbogen-, Plasma-oder Detonationsspritzen erfolgen.The applied by thermal spraying Cover layers can, for example, by crucible spraying, Powder flame, wire flame, two-wire arc, more Wire arc, plasma or detonation syringes are carried out.
Bevorzugt ist ferner vorgesehen, daß die Poren der mikro porösen Deckschicht durch mechanische Bearbeitung, insbe sondere Bürsten, vornehmlich mit metallischen und/oder nichtmetallischen Arbeitsmitteln geschlossen werden.It is also preferably provided that the pores of the micro porous cover layer by mechanical processing, esp special brushes, mainly with metallic and / or non-metallic work equipment.
Das Schließen der Poren kann beispielsweise durch Bürsten mit metallischen oder nichtmetallischen Bürstenkörpern geschehen.The pores can be closed, for example, by brushing with metallic or non-metallic brush bodies happen.
Alternativ oder zusätzlich kann vorgesehen sein, daß die Poren der Deckschicht mit Porenversiegler, insbesondere auf Basis von Polymethacrylat oder Epoxidharz, versiegelt werden.Alternatively or additionally, it can be provided that the Pores of the top layer with pore sealer, in particular based on polymethacrylate or epoxy resin, sealed will.
Eine bevorzugte Schichtausbildung wird darin gesehen, daß als thermische Deckschicht eine Einfachschicht aus Al 99,5; AlMg3; AlMg5; Cu 99; Cu 99,5; Ni/Al, Ni/Ti bzw. einer Mischung aus Al2O3 und TiO2 aufgebracht wird.A preferred layer formation is seen in the fact that a single layer made of Al 99.5; AlMg3; AlMg5; Cu 99; Cu 99.5; Ni / Al, Ni / Ti or a mixture of Al 2 O 3 and TiO 2 is applied.
Alternativ kann vorgesehen sein, daß als Deckschicht eine Mehrfachschicht aufgebracht wird, die als Haftgrundschicht aus NiAl und als Funktions-(Schutz)-Schicht aus einer Mischung von Al2O3 und TiO2, insbesondere 60/40 bzw. 97/03 besteht.Alternatively, it can be provided that a multilayer is applied as the cover layer, which consists of NiAl as the adhesive base layer and as a functional (protective) layer of a mixture of Al 2 O 3 and TiO 2 , in particular 60/40 or 97/03.
Der Mehrfachschichtaufbau ist bevorzugt.The multi-layer structure is preferred.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4021466A DE4021466A1 (en) | 1990-07-05 | 1990-07-05 | Restoring damaged areas of enamel layer in steel tanks - by spraying abrasive agent, esp. corundum, applying protection layer by plasma or detonation spraying etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4021466A DE4021466A1 (en) | 1990-07-05 | 1990-07-05 | Restoring damaged areas of enamel layer in steel tanks - by spraying abrasive agent, esp. corundum, applying protection layer by plasma or detonation spraying etc. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4021466A1 true DE4021466A1 (en) | 1992-01-09 |
Family
ID=6409730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4021466A Withdrawn DE4021466A1 (en) | 1990-07-05 | 1990-07-05 | Restoring damaged areas of enamel layer in steel tanks - by spraying abrasive agent, esp. corundum, applying protection layer by plasma or detonation spraying etc. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4021466A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19503999A1 (en) * | 1995-02-08 | 1996-08-14 | Thale Eisen Huettenwerk | Producing enamelled iron workpieces in endless format or with large surface areas |
US5624717A (en) * | 1992-11-27 | 1997-04-29 | Snmi-Societe Nouvelle De Metallisation Industrie | Process for coating or hardfacing a part by means of a plasma transferred arc |
DE19809982A1 (en) * | 1998-03-09 | 1999-09-16 | Volkswagen Ag | Paint fault repair process for vehicle bodywork |
EP1354978A1 (en) * | 2000-11-27 | 2003-10-22 | Ikebukuro Horo Kogyo Co. Ltd. | Glass lining application method |
DE102004007361B4 (en) * | 2003-02-24 | 2005-10-06 | Innovent E.V. | Method for modifying galvanized steel surfaces and black steel surfaces |
RU2587678C1 (en) * | 2014-12-18 | 2016-06-20 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Acid-proof composition for repair of enamel coating |
EP3763686A1 (en) | 2019-07-08 | 2021-01-13 | OMERAS GmbH Oberflächenveredelung und Metallverarbeitung | Repair of defects in a glass or glass-ceramic coating on a metallic or ceramic substrate including substrate surface |
-
1990
- 1990-07-05 DE DE4021466A patent/DE4021466A1/en not_active Withdrawn
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5624717A (en) * | 1992-11-27 | 1997-04-29 | Snmi-Societe Nouvelle De Metallisation Industrie | Process for coating or hardfacing a part by means of a plasma transferred arc |
DE19503999A1 (en) * | 1995-02-08 | 1996-08-14 | Thale Eisen Huettenwerk | Producing enamelled iron workpieces in endless format or with large surface areas |
DE19503999C2 (en) * | 1995-02-08 | 1998-08-20 | Thale Eisen Huettenwerk | Process for the production of enamelled components in endless lengths or large areas as well as partial element and use of a partial element |
DE19809982A1 (en) * | 1998-03-09 | 1999-09-16 | Volkswagen Ag | Paint fault repair process for vehicle bodywork |
DE19809982B4 (en) * | 1998-03-09 | 2007-09-27 | Volkswagen Ag | Method for small-area repair of paint defects of a paint coating |
EP1354978A1 (en) * | 2000-11-27 | 2003-10-22 | Ikebukuro Horo Kogyo Co. Ltd. | Glass lining application method |
US6815013B2 (en) | 2000-11-27 | 2004-11-09 | Ikebukuro Horo Kogyo Co., Ltd. | Glass lining application method |
DE102004007361B4 (en) * | 2003-02-24 | 2005-10-06 | Innovent E.V. | Method for modifying galvanized steel surfaces and black steel surfaces |
RU2587678C1 (en) * | 2014-12-18 | 2016-06-20 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Acid-proof composition for repair of enamel coating |
EP3763686A1 (en) | 2019-07-08 | 2021-01-13 | OMERAS GmbH Oberflächenveredelung und Metallverarbeitung | Repair of defects in a glass or glass-ceramic coating on a metallic or ceramic substrate including substrate surface |
WO2021004823A1 (en) | 2019-07-08 | 2021-01-14 | Omeras Gmbh Oberflächenveredelung Und Metallverarbeitung | Repairing defects in a glass or glass ceramic covering on a metal or ceramic substrate including the substrate surface |
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Legal Events
Date | Code | Title | Description |
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8139 | Disposal/non-payment of the annual fee |