Process to make industrial casting form tools, cores and feeders with inner surface coating mixture of ceramic particles and colloidal solution

In a process to make industrial casting forms tools, cores and feeders, a ceramic coating is applied using a colloidal solution to the tool surface area that subsequently comes into contact with the injected form mixture. The injected form mixture consists of an inflammable substance and a binding a...

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Hauptverfasser: KOCH, DIETHER, JUNDT, MAGNUS, PRIEBE, CHRISTIAN
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JUNDT, MAGNUS
PRIEBE, CHRISTIAN
description In a process to make industrial casting forms tools, cores and feeders, a ceramic coating is applied using a colloidal solution to the tool surface area that subsequently comes into contact with the injected form mixture. The injected form mixture consists of an inflammable substance and a binding agent. The colloidal solution is silicic acid produced by hydrolysis of silicic acid ester and modified by organic ligands. The colloidal solution further incorporates particulate metal oxides, carbon nano-tubes, a silicon polymer, a primer and a separation agent. The ceramic coating is 2 to 200 microns thick. Further claimed is a commensurate industrial casting form tool in which the form is hardened prior to removal. Die Erfindung betrifft ein Verfahren zur Herstellung von Formkörpern für die Gießereiindustrie, insbesondere Formen, Kerne und Speiser. Auf Oberflächen der Vorrichtung zur Herstellung der Formkörper, welche mit der zur Herstellung der Formkörper verwendeten Formstoffmischung in Berührung gelangen können, wird, bevorzugt durch Auftragen eines Sols, eine keramische Beschichtung aufgebracht. Die Beschichtung zögert wirksam ein Anhaften des Bindemittels hinaus, welches in der Formstoffmischung enthalten ist.
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The injected form mixture consists of an inflammable substance and a binding agent. The colloidal solution is silicic acid produced by hydrolysis of silicic acid ester and modified by organic ligands. The colloidal solution further incorporates particulate metal oxides, carbon nano-tubes, a silicon polymer, a primer and a separation agent. The ceramic coating is 2 to 200 microns thick. Further claimed is a commensurate industrial casting form tool in which the form is hardened prior to removal. Die Erfindung betrifft ein Verfahren zur Herstellung von Formkörpern für die Gießereiindustrie, insbesondere Formen, Kerne und Speiser. Auf Oberflächen der Vorrichtung zur Herstellung der Formkörper, welche mit der zur Herstellung der Formkörper verwendeten Formstoffmischung in Berührung gelangen können, wird, bevorzugt durch Auftragen eines Sols, eine keramische Beschichtung aufgebracht. 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subjects CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
title Process to make industrial casting form tools, cores and feeders with inner surface coating mixture of ceramic particles and colloidal solution
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