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:
Sep. 09, 2014
Filed:
Dec. 28, 2011
Michel Shawn Smallwood, Greenwood, IN (US);
Tab Michael Heffernan, Plainfield, IN (US);
Mark Steven Mccormick, Martinsville, IN (US);
Randolph Clifford Helmink, Avon, IN (US);
Matthew Kush, Martinsville, IN (US);
Michel Shawn Smallwood, Greenwood, IN (US);
Tab Michael Heffernan, Plainfield, IN (US);
Mark Steven McCormick, Martinsville, IN (US);
Randolph Clifford Helmink, Avon, IN (US);
Matthew Kush, Martinsville, IN (US);
Rolls-Royce Corporation, Indianapolis, IN (US);
Rolls-Royce North American Technologies, Inc., Indianapolis, IN (US);
Abstract
A method includes removing a casting shell and core from a cast component, which may be a gas turbine blade. The method further includes utilizing a focused removal technique, such as a water jet or laser drill, to remove a portion of a virtual pattern cast (VPC) shell from the cast component. The cast component is then exposed to a leaching solution and high pressure water wash to remove an internal core material and a portion of the VPC shell remainder from the cast component. The method further includes exposing the cast component to a high agitation leaching solution and to the high pressure water wash for a minimal time. An electroless nickel-boron coating is then applied to the cast component, and an electrolytic palladium coating is further applied to the cast component. The cast component is further exposed to a high agitation leaching solution for an extended period.