Platinum channel and manufacturing method and coating zirconium oxide dry powder mixture thereof

Abstract

The invention discloses a platinum channel and a manufacturing method and a coating zirconium oxide dry powder mixture thereof. After the zirconium oxide dry powder mixture is sprayed on the surface of a platinum channel body, oxidization and volatilization of platinum in the platinum channel in a sintering process under high temperature can be effectively prevented. The zirconium oxide dry powdermixture is prepared from the following ingredients of 9.3% to 16% of SiO2, 2.7% to 4.3% of Al2O3, 80% to 87% of ZrO2 and 0.01% to 0.03% of Na2O. According to the platinum channel, the outer surface of the platinum channel is coated by a coating layer of the zirconium oxide dry powder mixture; a zirconium oxide dry powder filling material, a zirconium oxide groove profile brick and a zirconium oxide thermal insulation brick which are in tight contact are sequentially arranged outside the coating layer from inside to outside; the thickness of the coating layer is 0.8 to 1mm.

Description

Technical field [0001] The invention belongs to the field of high-aluminum cover glass production, and specifically relates to a platinum channel, a manufacturing method thereof, and a zirconium oxide dry powder mixture for coating. Background technique [0002] The main function of the platinum channel in the production process of cover glass is to clarify, homogenize, and cool the molten glass, and provide qualified and high-quality molten glass to the next process. [0003] The platinum tube body of the platinum channel is mainly made of PtRh alloy material, and the cost is high, and the platinum channel plays a pivotal role in the production process of high-aluminum cover glass, providing stable and high-quality glass liquid for the forming process, so once damaged, it will Cause immeasurable losses. The clarification and homogenization of the glass liquid is carried out at a very high temperature, so the platinum channel will be under high temperature conditions for a long ti...

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Problems solved by technology

Al 2 o 3 Dry powder liquid filling is used to prevent oxidation on the surface of the platinum channel, but at high temperature Al 2 o 3 After the dry powder liquid solidifies, it will cause a gap atmo

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