Patent · US Active

Method for the production of a refractory filter

US9518307B2 · kind B2 · utility

0Cited by

5References

5Claims

0Family size

Assignee

Foseco International Limited · GB

Inventors

Friedhelm Demey · Borken, DE
Renate Jahre · Gladbeck, DE
Hans Riethmann · Borken, DE
Mario Arruda · São Paulo, BR
Antonio Cassara · São Paulo, BR
Raphael Neto · São Paulo, BR
Fabio De Oliveira · São Paulo, BR
Sueli Pereira · São Paulo, BR
Kazuhiro Nakano · Fukushima, JP

Key dates

Filing date	May 21, 2014
Grant date	Dec 13, 2016
Priority date	—
Expiry date	Jan 27, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for the production of closed edge filters suitable for filtering molten metal and filters made by such a method. The method comprises: providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter; applying a liquid comprising an organic coating component to the first surface; solidifying the organic coating component to form a filter precursor having a volatilizable coating on the first surface; impregnating the filter precursor with a slurry comprising particles of a refractory material, a binder and a liquid carrier; and drying and firing the impregnated filter precursor to form the filter having a closed edge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.