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:
Mar. 28, 2006
Filed:
Nov. 08, 2004
Martin Balliel, Bassersdorf, CH;
Dietrich Eckardt, Ennetbaden, CH;
Maxim Konter, Klingnau, CH;
Andreas Weiland, Neucuâtel, CH;
Martin Balliel, Bassersdorf, CH;
Dietrich Eckardt, Ennetbaden, CH;
Maxim Konter, Klingnau, CH;
Andreas Weiland, Neucuâtel, CH;
Alstom Technology Ltd., Baden, CH;
Abstract
A method of casting a directionally solidified (DS) or single crystal (SX) article with a casting furnace having a heating chamber (), a cooling chamber (), a separating baffle () between the both chambers includes a first step in which the shell mould () is filled with liquid metal (), and the liquid metal () is directionally solidified by withdrawing the shell mould () from the heating to the cooling chamber (). An inert gas impinges from nozzles () arranged below the baffle () on the shell mould () and in steep transitions in outer surface area of the shell mould () the flow of the inert gas () is reduced or even stopped and when a protruding geometrical feature has passed the impingement area of the gas jets, the gas flow () is restored to a value adjusted to the geometry of the cast part presently passing the impingement area.