Mold for reducing defects in low pressure casting of aluminum alloy wheel
First Claim
1. A mold for reducing defects in low pressure casting of an aluminum alloy wheel, the mold comprising a top mold, a side mold and a bottom mold, the top mold being arranged at the top to mold a back cavity of a wheel, the bottom mold being arranged below the top mold to mold a front wheel disc of the wheel, the side mold being arranged on the side of the top mold and the bottom mold, and the top mold, the side mold and the bottom mold collectively surrounding a casting cavity of the aluminum alloy wheel, characterized in thatthe upper surface of the bottom mold comprises a recessed portion for forming spokes and a boss portion for forming a window;
- the top mold has a depth such that a hub cavity is 1-2 mm higher than a predetermined hub blank;
the portion of the top mold that cooperates with the boss portion of the upper surface of the bottom mold for forming the window comprises an assembly slot, the assembly slot extends 2-3 mm outwards from the boss portion, and a clearance of 0.2-0.5 mm is formed between the top surface of the assembly slot and the boss portion;
the boss portion for forming the window comprises cooling ducts; and
the back of the boss portion of the bottom mold is machined with a profiling slot, the profiling slot is filled with thermal insulation material.
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Accused Products
Abstract
A mold for reducing defects in low pressure casting of an aluminum alloy wheel includes a top mold, a side mold and a bottom mold, wherein the top mold is arranged above the bottom mold to mold a back cavity of a wheel, the bottom mold is arranged below the top mold to mold a front wheel disc of the wheel, the side mold is arranged on the side of the top mold and the bottom mold, and the top mold, the side mold and the bottom mold collectively surround a casting cavity of the aluminum alloy wheel, wherein the upper surface of the bottom mold includes a recessed portion configured to form a spoke and a boss portion configured to form a window and wherein the boss portion configured to form the window includes cooling ducts.
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Citations
9 Claims
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1. A mold for reducing defects in low pressure casting of an aluminum alloy wheel, the mold comprising a top mold, a side mold and a bottom mold, the top mold being arranged at the top to mold a back cavity of a wheel, the bottom mold being arranged below the top mold to mold a front wheel disc of the wheel, the side mold being arranged on the side of the top mold and the bottom mold, and the top mold, the side mold and the bottom mold collectively surrounding a casting cavity of the aluminum alloy wheel, characterized in that
the upper surface of the bottom mold comprises a recessed portion for forming spokes and a boss portion for forming a window; -
the top mold has a depth such that a hub cavity is 1-2 mm higher than a predetermined hub blank; the portion of the top mold that cooperates with the boss portion of the upper surface of the bottom mold for forming the window comprises an assembly slot, the assembly slot extends 2-3 mm outwards from the boss portion, and a clearance of 0.2-0.5 mm is formed between the top surface of the assembly slot and the boss portion; the boss portion for forming the window comprises cooling ducts; and the back of the boss portion of the bottom mold is machined with a profiling slot, the profiling slot is filled with thermal insulation material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification