Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2004-11-23
2009-06-30
Ip, Sikyin (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C416S008000, C427S446000, C427S455000, C427S456000
Reexamination Certificate
active
07553385
ABSTRACT:
A process for forming an article, such as a combustion chamber liner, comprises the steps of providing a mandrel formed from a material, such as an aluminum containing material, having a net shape of the article to be made, depositing a powdered metal material onto the mandrel without melting the powdered metal material, and removing the material forming the mandrel to leave a free standing monolithic article. In a preferred embodiment of the present invention, the powdered metal material comprises powdered GRCop-84. Alternatively, the powdered metal material may be GRCop-42.
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Bachman & LaPointe P.C.
Ip Sikyin
United Technologies Corporation
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