The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2023
Filed:
Aug. 10, 2020
Wuhan University of Science and Technology, Wuhan, CN;
Guangqiang Li, Wuhan, CN;
Qiang Wang, Wuhan, CN;
Yu Liu, Wuhan, CN;
Ao Huang, Wuhan, CN;
Wen Yan, Wuhan, CN;
Wan Zheng, Wuhan, CN;
Huazhi Gu, Wuhan, CN;
Wuhan University of Science and Technology, Wuhan, CN;
Abstract
A spiral-orifice ceramic filter for metal casting, including spiral channels and two drain openings, where the spiral channels are distributed in a ceramic substrate in a staggered manner. By adoption of the spiral channel structure, molten metal may rotate to generate a centrifugal force while flowing forwards so as to promote separation of inclusions. The spiral-orifice ceramic filter for metal casting includes the following components: 90-95 wt % of MgO, 4-8 wt % of SiOand 2-4 wt % of ZrO. Therefore, the spiral-orifice ceramic filter for metal casting has high strength under normal temperature and optional thermal impact resistance under high temperature, and may tolerate the impact of molten metal at 1700° C. or higher without break. The ceramic substrate and the spiral channel are superficially coated with one layer of functional oxide prepared from CaO.2AlO, CaO.6AlO, AlO, TiO, or ReO.