Composite and self-lubricating bushing and method for making...

Details Composite and self-lubricating bushing and method for making... Composite and self-lubricating bushing and method for making...

F - Mech Eng,Light,Heat,Weapons

16

C

26/176, 308/47

F16C 33/04 (2006.01) B21D 53/10 (2006.01) B22F 5/10 (2006.01) B22F 7/00 (2006.01) F16C 33/14 (2006.01)

Patent

CA 2007683

COMPOSITE AND SELF-LUBRICATING BUSHING AND METHOD FOR MAKING SAME ABSTRACT OF THE INVENTION A composite and self-lubricating bushing comprises a monolithic steel body having a machined internal cylindrical surface and a porous bearing layer applied to the surface. The porous bearing layer is formed by compacting and sintering a particulate bearing material. The steel body may also include a cavity for storing lubricant and at least one passageway extending between the cavity and the internal cylindrical surface. The bushing may be fabricated by positioning the steel body concentrically over an elastomeric plug, charging the annular cavity between the body and the plug with a sinterable particulate, expanding the elastomeric plug diametrically to compact the particulate, removing the plug and heating the bearing body and compacted particulate.

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