Method for metallurgically bonding cylinder liners to a cylinder

Details Method for metallurgically bonding cylinder liners to a cylinder Method for metallurgically bonding cylinder liners to a cylinder

1992-01-15

1994-01-25

Bradley, Paula A.

Metal founding

Process

Shaping liquid metal against a forming surface

164 98, 164 75, B22D 1908

Patent

active

052808203

ABSTRACT:
A method for metallurgically bonding cylinder liners (12, 12') within a cylinder block 14 of an internal combustion engine. The liners (12, 12') are cleaned (16) and their outer surfaces coated (18) with a low melting point cooling material (20) such as molten zinc forming a metallurgical bond therebetween. The coating (20) is allowed to solidify forming an outer oxidized layer (24) on the coating (20). The oxidized layer (24) is subsequently removed to expose an unoxidized outer surface (26) of the coating (20). The coated liners (12, 12') are then disposed within a casting mold and molten aluminum-based cylinder block material (36) is poured into the mold and about the coated liners (12, 12'). The molten cylinder block material (36) remelts the coating (20) on the liners (12, 12') and causes the coating to further alloy with the cylinder block material (36), whereupon cooling the cylinder liners (12, 12') are metallurgically bonded to the cylinder block (14).

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patent: 5005469 (1991-04-01), Ohta

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