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A Method to Fabricate Integral Channels in Metallic Structures

*Abstract: Abstract of US Patent 6,923,362 - Integral channels in metal components and fabrication thereof: An internal channel in a metal body for use in applications where internal fluid flow within a metal body is desired, as in a heat exchanger. The internal channel is formed in the metal body by frictionally stirring with a pin plunged into the metal body, and traversing the metal body with the pin.Non-confidential Abstract of Invention: Cooling or heating channels are used to actively control temperature of components under severe application conditions. For example, the copper plates used near the exit of shuttle engines have active cooling channels. Manufacturing of such cooling channels requires advanced machining techniques and that leads to very high cost. Friction stir processing can be used to create integral cooling channels in metallic materials. This simple technique can lead to very significant cost saving.

*Principal Investigation: Name: Rajiv Mishra, Associate Professor of Metallurgical Engineering
Department:

附加資料: Patent Number: US6923362B2
Application Number: US2002261036A
Inventor: Mishra, Rajiv S.
Priority Date: 30 Sep 2002
Priority Number: US6923362B2
Application Date: 30 Sep 2002
Publication Date: 2 Aug 2005
IPC Current: B23K002012
US Class: 2281121 | 2280021
Assignee Applicant: The Curators of the University of Missourilumbia
Title: Integral channels in metal components and fabrication thereof
Usefulness: Integral channels in metal components and fabrication thereof
Summary: Used for forming an internal cooling channel in a metal body (CLAIMED), e.g. copper, aluminium, titanium, steel and magnesium of an industrial component e.g. die, combustion chamber in a space shuttle main engine and heat exchanger.
Novelty: Internal cooling channel forming method, involves rotating pin to frictionally heat metal surface, plunging pin into metal body perpendicular to metal surface and moving pin parallel to metal surface to form channel

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