DD263083A1 - METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS - Google Patents

METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS Download PDF

Info

Publication number
DD263083A1
DD263083A1 DD30512787A DD30512787A DD263083A1 DD 263083 A1 DD263083 A1 DD 263083A1 DD 30512787 A DD30512787 A DD 30512787A DD 30512787 A DD30512787 A DD 30512787A DD 263083 A1 DD263083 A1 DD 263083A1
Authority
DD
German Democratic Republic
Prior art keywords
surface layers
thermally sprayed
sealing
sprayed surface
glaating
Prior art date
Application number
DD30512787A
Other languages
German (de)
Inventor
Lothar Beyerlein
Heinz Schneider
Joachim Singer
Original Assignee
Hermsdorf Keramik Veb
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 Hermsdorf Keramik Veb filed Critical Hermsdorf Keramik Veb
Priority to DD30512787A priority Critical patent/DD263083A1/en
Publication of DD263083A1 publication Critical patent/DD263083A1/en

Links

Abstract

Die Erfindung betrifft ein Verfahren zum Glaetten und Versiegeln thermisch gespritzter Oberflaechenschichten, bspw. solcher aus plasmagespritztem Gesteinsmehl. Aufgabengemaess sollen Poren und durchlaessige Bereiche in solchen Schichten unter Wahrung ihrer vorteilhaften thermischen, Trenn- und Verschleisseigenschaften verschlossen und eingeebnet werden. Erfindungsgemaess erfolgt dies durch Aufbringen einer Suspension anorganischer, glasig schmelzender Stoffgemische und oertliche Erwaermung derselben.The invention relates to a method for glazing and sealing thermally sprayed surface layers, for example. Such from plasma-sprayed rock flour. Taskgemaess pores and permeable areas in such layers while maintaining their advantageous thermal, separation and wear properties are sealed and leveled. According to the invention, this is done by applying a suspension of inorganic, glassy melting substance mixtures and local Erwärmung the same.

Description

Charakteristik des bekannten Standes der TechnikCharacteristic of the known state of the art

Es ist allgemein bekannt, thermisch gespritzte Verschleißschutzschichten aus einer porösen und einer in diese eindiffundierten weiteren Schicht „im Schmelzverband" herzustellen (DD 119151). Diese dient offenbar dazu, die mechanische Bearbeitbarkeit zu verbessern, ergibt also für sich noch keine ausreichende Oberflächenqualität. Im übrigen kann dieser Veröffentlichung auch kein Hinweis auf zweckmäßig einzusetzende Werkstoffe entnommen werden.It is generally known to prepare thermally sprayed wear protection layers from a porous layer and a further layer "diffused" in the melt (DD 119151), which obviously serves to improve the mechanical workability, and does not in itself provide sufficient surface quality This publication can also no reference to appropriate materials to be taken.

Weiter ist eine große Anzahl Emails zur Veredlung metallischer Oberflächen (bspw. DE 3417387; DE 3525972) bzw. Glasuren für keramische Oberflächen (bspw. DE 3041327; DE 3103438) bekannt. Diese können für sich allein niemals die ausgezeichneten Eigenschaften oder Eigenschaftskombinationen erreichen, wie sie von thermisch gespritzten Oberflächenschichten erwartet werden können.Furthermore, a large number of enamels for finishing metallic surfaces (eg DE 3417387, DE 3525972) or glazes for ceramic surfaces (eg DE 3041327, DE 3103438) are known. These alone can never achieve the excellent properties or property combinations expected of thermally sprayed surface layers.

Ziel der ErfindungObject of the invention

Ziel der Erfindung ist die Verbesserung der Oberflächengüte thermisch gespritzter Oberflächenschichten.The aim of the invention is to improve the surface quality of thermally sprayed surface layers.

Darlegung des Wesens der ErfindungExplanation of the essence of the invention

Der Erfindung liegt die Aufgabe zugrunde, Poren und durchlässige Bereiche in einer thermisch gespritzten Oberflächenschicht unter Wahrung der vorteilhaften thermischen. Trenn- und Verschleißeigenschaften derselben zu verschließen und einzuebnen.The invention is based on the object, pores and permeable areas in a thermally sprayed surface layer while maintaining the advantageous thermal. To close and level the separation and wear properties of the same.

Erfindungsgemäß wird diese Aufgabe durch Aufbringen einer Suspension anorganischer, glasig schmelzender Stoffgemische und örtliche Erwärmung derselben auf Temperaturen, bei denen die entstandene Schmelze relativ dünnflüssig wird, gelöst.According to the invention, this object is achieved by applying a suspension of inorganic, glassy melting substance mixtures and local heating of the same to temperatures at which the resulting melt is relatively thin liquid.

Ausführungsbeispieleembodiments

Auf die Innenflächen von Kochgefäßen, die durch thermisches Plasmaspritzen mit Basaltmehl beschichtet wurden, werden in Abhängigkeit von der verlangten Temperaturbelastbarkeit, die selbstverständlich von der plasmagespritzten Schicht mit Sicherheit erreicht werden muß, Suspensionen der nachfolgend genannten Zusammensetzung aufgebracht und mittels Laseroder Elektronenstrahl örtlich hoch erhitzt. Sie werden dabei so dünnflüssig, daß sie die genannten Poren oder Unebenheiten ausfüllen und zugleich unter der Wirkung der Oberflächenspannung, wie alle Gläser, ohne weiteres eine besonders glatte Oberfläche bilden, ohne daß dabei die vorteilhaften Eigenschaften der plasmagespritzten „Matrix" verloren gehen.On the inner surfaces of cooking vessels, which were coated by thermal plasma spraying with basalt flour, depending on the required temperature resistance, which must be achieved of course from the plasma-sprayed layer with certainty, suspensions of the following composition applied and heated locally by means of laser or electron beam. They are so thin that they fill the said pores or bumps and at the same time under the action of the surface tension, like all glasses, readily form a particularly smooth surface, without losing the beneficial properties of the plasma-sprayed "matrix".

Beispiel 1: Temperaturbelastbarkeit bis 6000CExample 1: Temperature resistance up to 600 ° C.

Natrium-, Kalium-, Lithiumoxide 25...31%Sodium, potassium, lithium oxides 25 ... 31%

Barium-, Kalzium-, Antimonoxide . 22...30% Aluminiumoxid 4...8%Barium, calcium, antimony oxides. 22 ... 30% alumina 4 ... 8%

Boroxid 8... 13%Boron oxide 8 ... 13%

Kieselsäure 18...36%Silica 18 ... 36%

mit einer Einbrehntemperatur nach Norton von etwa 8000C, die einen Mindestwert herstellt, der vom o. e. Einbrennverfahren mit Sicherheit überschritten wird.with a penetration temperature according to Norton of about 800 0 C, which establishes a minimum value, which is exceeded by the above baking process with certainty.

Beispiel 2: Temperaturbelastbarkeit bis 10000CExample 2: Temperature resistance up to 1000 ° C. 1515 ...60%... 60% Quarzmehlsilica flour 2020 . ..30°/, ..30 ° / FeldspatmehlFeldspatmehl 00 ...30%... 30% Glasmehlglass powder 00 ...2%... 2% Hellmittellight means 00 ...1%...1% RöstschutzmittelRöstschutzmittel

mit einer Einbrenntemperatur nach Norton von etwa 13000C.with a Norton baking temperature of about 1300 ° C.

Claims (1)

Verfahren zum Glätten und Versiegeln thermisch gespritzter Oberflächenschichten, gekennzeichnet durch Aufbringen einer Suspension anorganischer, glasig schmelzender Stoffgemische und örtliche Erwärmung derselben auf Temperaturen, bei denen die entstandene Schmelze relativ dünnflüssig ist.A method of smoothing and sealing thermally sprayed surface layers, characterized by applying a suspension of inorganic, glassy melting substance mixtures and local heating of the same to temperatures at which the resulting melt is relatively thin. Anwendungsgebiet der Erfindung . -Field of application of the invention. - Die Erfindung betrifft ein Verfahren zum Glätten und Versiegeln (im Sinne von Abdichten) thermisch gespritzter Oberflächenschichten, bspw. solcher aus plasmagespritztem Gesteinsmehl für hitzeexponierte Koch- und Bratgefäße.The invention relates to a method for smoothing and sealing (in terms of sealing) thermally sprayed surface layers, for example. Such from plasma-sprayed rock flour for heat-exposed cooking and frying.
DD30512787A 1987-07-20 1987-07-20 METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS DD263083A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD30512787A DD263083A1 (en) 1987-07-20 1987-07-20 METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD30512787A DD263083A1 (en) 1987-07-20 1987-07-20 METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS

Publications (1)

Publication Number Publication Date
DD263083A1 true DD263083A1 (en) 1988-12-21

Family

ID=5590883

Family Applications (1)

Application Number Title Priority Date Filing Date
DD30512787A DD263083A1 (en) 1987-07-20 1987-07-20 METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS

Country Status (1)

Country Link
DD (1) DD263083A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287136A3 (en) * 2009-07-31 2015-08-12 General Electric Company Methods of Improving Surface Roughness of an Environmental Barrier Coating and Components Comprising Environmental Barrier Coatings Having Improved Surface Roughness
EP2287129A3 (en) * 2009-07-31 2015-08-12 General Electric Company Methods of improving surface roughness of an environmental barrier coating
EP2284137A3 (en) * 2009-07-31 2015-09-16 General Electric Company Methods of Improving Surface Roughness of an Environmental Barrier Coating
US9212100B2 (en) 2009-07-31 2015-12-15 General Electric Company Environmental barrier coatings for high temperature ceramic components
US9771826B2 (en) 2009-07-31 2017-09-26 General Electric Company Components with environmental barrier coatings having improved surface roughness
US9926805B2 (en) 2009-07-31 2018-03-27 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287136A3 (en) * 2009-07-31 2015-08-12 General Electric Company Methods of Improving Surface Roughness of an Environmental Barrier Coating and Components Comprising Environmental Barrier Coatings Having Improved Surface Roughness
EP2287129A3 (en) * 2009-07-31 2015-08-12 General Electric Company Methods of improving surface roughness of an environmental barrier coating
EP2284137A3 (en) * 2009-07-31 2015-09-16 General Electric Company Methods of Improving Surface Roughness of an Environmental Barrier Coating
US9212100B2 (en) 2009-07-31 2015-12-15 General Electric Company Environmental barrier coatings for high temperature ceramic components
US9771826B2 (en) 2009-07-31 2017-09-26 General Electric Company Components with environmental barrier coatings having improved surface roughness
US9926805B2 (en) 2009-07-31 2018-03-27 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same
US10094237B2 (en) 2009-07-31 2018-10-09 General Electric Company Solvent based environmental barrier coatings for high temperature ceramic components
US10487686B2 (en) 2009-07-31 2019-11-26 General Electric Company Solvent based slurry compositions for making environmental barrier coatings and environmental barrier coatings comprising the same

Similar Documents

Publication Publication Date Title
DE1176325C2 (en) Thermally devitrifiable zinc-silicon-borate glasses for sealing preformed parts made of glass, metal or ceramic
EP1047554B1 (en) Porcelain enamel composition for electronic applications
DE2747858A1 (en) ONCE FIRED CERAMIC PRODUCT AND PROCESS FOR ITS MANUFACTURING
DE840641C (en) Lead-free enamels for aluminum and aluminum-based alloys
US2844693A (en) Wire-wound vitreous enamel resistors
DE1596956B1 (en) GLASS COMPOSITIONS OF LOW THERMAL EXPANSION FOR SOLDERING OBJECTS AS WELL AS PROCESSES FOR SOLDERING AND DECORATING GLASSES AND CERAMIC GLASSES ALSO LOW THERMAL EXPANSION
DE2003332C3 (en) Corrosion-resistant, partially crystallized enamel and method for producing an enamel coating
DD263083A1 (en) METHOD FOR GLAATING AND SEALING THERMALLY SPRAYED SURFACE LAYERS
EP0679355B1 (en) Cooking vessel for induction heating and method for making such a vessel
DE3710608C1 (en) Enamel frits for sheet steel with improved adhesion and their use
KR102547835B1 (en) Composition for enamel, preparation method of composition for enamel, and cooking appliance
DE737720C (en) Process for the production of large-area fusions between glass and metal
EP0587998B1 (en) Method for forming a removable surface region on a glass ceramic substrate
DE2257280A1 (en) PROCESS FOR ENAMELLING METALLIC OBJECTS
DE2703814A1 (en) Dense alumina prosthetic bone implants - coated with biologically active glass
DE687997C (en) Method for the protection of glass furnaces, glass tanks o.
DE1696110B1 (en) PROCESS FOR THE PRODUCTION OF GLASSY COATINGS ON SUBSTATE MATERIALS BY VACUUM EVAPORATION USING ELECTRON BEAMS
US2244360A (en) Ferrous metal enamel
DE2218319C3 (en) Process for the production of a ceramic protective layer which is resistant to light metal melts on iron-containing tools
KR102623353B1 (en) Composition for enamel, method for preparation thereof and cooking appliance using the same
JPH0239463B2 (en)
US2466043A (en) Vitreous coating
DE1696110C (en) Process for the production of glassy layers on substrate materials by vacuum evaporation using electron beams
JPH0551543B2 (en)
AT295774B (en) Method of making an object from glass

Legal Events

Date Code Title Description
ENJ Ceased due to non-payment of renewal fee