Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1992-11-06
1994-11-22
Bradley, P. Austin
Metal founding
Process
Shaping liquid metal against a forming surface
164 98, 164370, 164341, B22D 1908, B22D 1904
Patent
active
053659970
ABSTRACT:
A method for preparing an engine block casting having integral cylinder bore liners (10). A barrel slab core (14) includes barrel cores (18). Bore liners (10) surround the barrel cores (18) and are fixed in relation to the barrel slab core (14). A cylinder block mold core package (22) is assembled from the barrel slab core (14), and other cores (24, 26, 28). The liners (10) are heated while they are within the cylinder block mold core package (22) by induction heating. Access holes (30) are defined within the barrel slab core (14), each access hole (30) communicating with the interior of one barrel core (18). A heater (32) is inserted through each access hole (30). Thermal energy is thus transferred across the barrel core (18) to the cylinder bore liner (10) to assure optimum integrity of bonding between a solidified cylinder block casting and the cylinder bore liners (10). The heaters (32) are then retracted before adding the molten metal.
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Heater Thomas J.
Helgesen Gary D.
Rentschler Robert G.
Bradley P. Austin
Ford Motor Company
Malleck Joseph W.
May Roger L.
Pelto Rex E.
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