Multi-shot casting
First Claim
Patent Images
1. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; and
at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end, the at least one overflow passageway comprising an up-pass (304;
304-2) from the part-forming cavity to the apex and a downpass (310;
310-2) from the apex.
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0 Petitions
Accused Products
Abstract
An alloy part is cast in a mold (280) having a part-forming cavity (292, 294, 296). The method comprises pouring a first alloy into the mold. The pouring causes: a surface (550) of the first alloy in the part-forming cavity to raise relative to the part-forming cavity; a branch flow of the poured first alloy to pass upwardly through a first portion (304) of a passageway; and the branch flow to pass downwardly through a second portion (310), of the passageway; solidifying some of the first alloy in the passageway to block the passageway while at least some of the first alloy in the part-forming cavity remains molten. A second alloy is poured into the mold atop the first alloy and solidified.
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Citations
18 Claims
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1. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; and at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end, the at least one overflow passageway comprising an up-pass (304;
304-2) from the part-forming cavity to the apex and a downpass (310;
310-2) from the apex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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398) comprising;
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12. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end; anda grain starter (298) below the part-forming cavity.
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398) comprising;
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13. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end;a pour cone (406); and a downsprue extending from the pour cone toward the part-forming cavity and comprising; a lower portion (402) having a plurality of ports (422, 428) in communication with the part-forming cavity; and an upper portion (404) telescoping relative to the lower portion and coupling the lower portion to the pour cone.
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398) comprising;
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14. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end;a first pour cone (602); a downsprue (606, 360) extending from the first pour cone toward the part-forming cavity; and a second pour cone (604) in communication with the part-forming cavity.
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398) comprising;
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15. A casting mold and casting apparatus combination comprising:
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a casting mold (280;
398) comprising;a part-forming cavity (292, 294, 296) having a lower end and an upper end; and at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end; anda casting apparatus, the casting apparatus having; a first ingot feeder (804); a first induction melter (808) positioned to receive an ingot from the first ingot feeder; a first actuator (809) for rotating the first induction melter from a charging orientation to a pouring orientation for pouring into the part-forming cavity; a second ingot feeder (804); a second induction melter (808) positioned to receive an ingot from the second ingot feeder; and a second actuator (809) for rotating the second induction melter from a charging orientation to a pouring orientation for pouring into the part-forming cavity.
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16. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end;a pour cone; and a downsprue extending from the pour cone toward the part-forming cavity.
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398) comprising;
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17. A casting mold (280;
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398) comprising;
a part-forming cavity (292, 294, 296) having a lower end and an upper end; at least one overflow passageway (302, 304, 310;
302-2;
304-2;
310-2) having an apex (314;
314-2) at a level between the upper end and the lower end;a first pour cone; at least one first passageway extending from the first pour cone toward the part-forming cavity; a second pour cone, concentric with the first pour cone; and at least one second passageway extending from the second pour cone toward the part-forming cavity. - View Dependent Claims (18)
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398) comprising;
Specification