Multi-Shot Casting

Patent metadata

Field	Value
Publication number	US-2019168296-A1
Application number	US-201916267900-A
Country	US
Kind code	A1
Filing date	Feb 5, 2019
Priority date	Dec 14, 2012
Publication date	Jun 6, 2019
Grant date	—

Abstract

A casting mold has a pour cone, a downsprue, and a part-forming cavity having a lower end and an upper end. The downsprue extends from the pour cone toward the part-forming cavity and has: a lower portion having a plurality of ports in communication with the part-forming cavity; and an upper portion telescoping relative to the lower portion and coupling the lower portion to the pour cone.

First claim

What is claimed is:

1 . A casting mold comprising:
a part-forming cavity having a lower end and an upper end; a pour cone; and a downsprue extending from the pour cone toward the part-forming cavity and comprising:
a lower portion having a plurality of ports in communication with the part-forming cavity; and
an upper portion telescoping relative to the lower portion and coupling the lower portion to the pour cone.

2 . The casting mold of claim 1 wherein:
the plurality of ports comprises an upper port and a lower port;
the upper portion is moveable from a compressed contracted condition to an extended condition;
in the contracted condition, the upper portion blocks the upper port; and
movement to the extended condition unblocks the upper port.

3 . The casting mold of claim 2 wherein:
the upper portion telescopes within the lower portion.

4 . The casting mold of claim 3 wherein:
the mold along the part-forming cavity and the lower portion are formed as a single piece.

5 . The casting mold of claim 1 wherein:
the upper portion telescopes within the lower portion.

6 . The casting mold of claim 1 wherein:
the mold along the part-forming cavity and the lower portion are formed as a single piece.

7 . The casting mold of claim 1 wherein:
the part-forming cavity is one of a plurality of part-forming cavities;
each of the plurality of part-forming cavities coupled to the same said downsprue.

8 . The casting mold of claim 8 in combination with a casting apparatus, the casting apparatus having:
a first ingot feeder;
a first induction melter 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;
a second induction melter positioned to receive an ingot from the second ingot feeder; and
a second actuator for rotating the second induction melter from a charging orientation to a pouring orientation for pouring into the part-forming cavity.

9 . A method for using the casting mold of claim 1 , the method comprising:
introducing a first molten alloy to the part-forming cavity through the pour cone and a lower port of the plurality of ports; extending the upper portion relative to the lower portion; and introducing a second molten alloy to the part-forming cavity through the pour cone and an upper port of the plurality of ports.

10 . The method of claim 9 wherein:
the molten alloy introduced through the upper port is different from the molten alloy introduced through the lower port;

11 . The method of claim 10 wherein:
the molten alloy introduced through the upper port is introduced after a partial solidification of the molten alloy introduced through the lower port; and

12 . The method of claim 9 wherein:
the molten alloy introduced through the upper port is introduced after a partial solidification of the molten alloy introduced through the lower port; and

13 . The method of claim 12 wherein:
the molten alloy introduced through the upper port is introduced from a second ingot and the molten alloy introduced through the lower port is introduced from a first ingot.

14 . The method of claim 9 wherein:
the molten alloy introduced through the upper port is introduced from a second ingot and the molten alloy introduced through the lower port is introduced from a first ingot.

15 . A method for casting with a mold having a plurality of part cavities, the method comprising:
a first pour through a first pour cone, the first pour filling a lower portion of each of the part cavities; and a second pour through a second pour cone, the second pour filling an upper portion of each of the part cavities.

16 . The method of claim 15 wherein:
the first pour cone is concentric with the second pour cone.

17 . The method of claim 15 wherein:
the first pour is a bottom feed and the second pour is a top feed.

Assignees

• United Technologies Corp

Inventors

• Bullied Steven J
• Shah Dilip M
• Cetel Alan D
• Marcin Jr John J

Classifications

• B22D27/045

  Directionally solidified castings · CPC title

• F05D2230/211

  by precision casting, e.g. microfusing or investment casting · CPC title

• B22D19/16 Primary

  for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills (casting compound ingots B22D7/02) · CPC title

• F01D5/147

  Construction, i.e. structural features, e.g. of weight-saving hollow blades (F01D5/148, F01D5/16 and F01D5/20 take precedence; blade shape F01D5/141; blades with cooling or heating channels or cavities F01D5/18; heating, heat-insulating or cooling means on blades F01D5/18) · CPC title