Apparatus for use in direct resistance heating of platinum-containing vessels

A container and electrode technology, applied in the field of direct resistance heating of platinum-containing containers, can solve problems such as material failure

Active Publication Date: 2011-09-21
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These hot spots can lead to premature material failure, such as through accelerated oxidation of the metal involved or by reaching the melting point of the metal

Method used

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  • Apparatus for use in direct resistance heating of platinum-containing vessels
  • Apparatus for use in direct resistance heating of platinum-containing vessels
  • Apparatus for use in direct resistance heating of platinum-containing vessels

Examples

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Embodiment Construction

[0036] In the following detailed description, for purposes of illustration and not limitation, example embodiments are set forth in numerous specific details in order to provide a thorough understanding of the present invention. However, it will be apparent to those of ordinary skill in the art, having reference to the disclosure herein, that the invention may be practiced in other embodiments without departing from the specific details disclosed herein. Moreover, descriptions of well-known devices, methods and materials are omitted so as not to obscure the description of the present invention. Finally, as far as possible, the same components are designated with the same reference numerals.

[0037] exist figure 1 In the exemplary apparatus 10, batch materials indicated by arrows 11 are melted in a furnace or melter 12 to form molten glass 14 at a first temperature T1. T1 depends on the specific glass composition, but for glass capable of being used as an LCD, T1 can exceed ...

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PUM

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Abstract

An apparatus for use in direct resistance heating of a molten glass-carrying vessel, such as a finer or connecting pipe, is provided. The apparatus comprises a flange comprises a plurality of electrically-conductive rings that include an inner ring joined to the vessel's exterior wall during use of the flange and an outer ring that receives electric current during use of the flange. The innermost ring comprises a high-temperature resistant metal preferably comprising at least 80% platinum, and the outermost ring preferably comprising at least 99.0% nickel. This combination of materials both increases the reliability of the flange and reduces its cost. Either one or both of the width or thickness of one or both of the inner or outer rings varies as a function of angular position relative to the vessel. The width and / or thickness of the inner and the outer rings with relation to each other produces a uniform current distribution in the flange and the vessel.

Description

[0001] Claiming priority of an earlier filed U.S. application [0002] This application claims the benefit of US Application Serial No. 12 / 712,838, filed February 25, 2010. The content of this document as well as the entire disclosures of the publications, patents and patent documents mentioned herein are incorporated by reference. technical field [0003] The present invention relates to glassmaking, and in particular to direct resistance heating of platinum-containing vessels for holding or conveying molten glass, for example, vessels such as melters, refining furnaces, mixing chambers, forming equipment, connecting pipes, and the like. Background technique [0004] Platinum-containing materials, e.g., materials containing at least 80% by weight platinum, are widely used in glass and its Manufacture of products. Platinum-containing materials are also notoriously expensive. Thus, by reducing even small amounts of platinum-containing material used in glass manufacturing e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/02C03B7/02
CPCC03B7/07C03B5/027C03B5/1675C03B5/02C03B5/0332C03B5/235C03B7/098Y02P40/57
Inventor G·德安格利斯C·C·何罗伟炜
Owner CORNING INC
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