Cast-in-place iron-based cylinder liners

Details Cast-in-place iron-based cylinder liners Cast-in-place iron-based cylinder liners

F - Mech Eng,Light,Heat,Weapons

02

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F02F 1/16 (2006.01) B22D 19/00 (2006.01)

Patent

CA 2077187

-10- Abstract of the Disclosure A cast-in-place liner construction useful in low pressure casting of hollow aluminum parts. The construction has an iron-based cylindrical body with a surface thereof imprinted with a repeating pattern of crossed groups of relief grooves, each groove forming a helix along such surface, the spacing (.20-.30) between such grooves and the depth (.02-.04 inch) of such grooves being uniformly controlled to permit the grooves to act as molten aluminum runners during low pressure casting of the aluminum that facilitates laying-up of the aluminum along the entire surface. Also, a method of deploying such liner, comprising: (a) imprinting a cylindrical surface of a sleeve designed to interface with cast aluminum thereagainst, the imprinting providing a quilted pattern of shallow crossing grooves (included angle 35-55°) sized and spaced to promote transfer of molten aluminum during low pressure filling of the mold containing such sleeve; and (b) planting the liner in such mold and introducing aluminum thereagainst at a low pressure to form a desired aluminum casting. 5767L

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