Core with thermal conducting conduit therein and related system and method

Patent metadata

Field	Value
Publication number	US-10618104-B2
Application number	US-201715728900-A
Country	US
Kind code	B2
Filing date	Oct 10, 2017
Priority date	Oct 10, 2017
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A core for forming a casting article including a sacrificial material about the core is disclosed. The casting article is used for forming a mold for investment casting a component. The core may include a body having an external shape to form at least a section of an internal structure of the component during the investment casting; and a closed loop, core thermal conducting conduit inside a portion of the body. The closed loop, core thermal conducting conduit defines a path for a temperature controlled thermal fluid to pass through the portion of the body to control a temperature of the portion during forming of the casting article. A system may include the core and a thermal fluid controller for controlling the temperature of the thermal fluid. A related method is also disclosed.

First claim

What is claimed is:

1. A core for forming a casting article including a sacrificial material about the core, the casting article used for forming a mold for investment casting a component, the core comprising:
a body having an external shape to form at least a section of an internal structure of the component during the investment casting; and
a closed loop, core thermal conducting conduit inside a portion of the body, the closed loop, core thermal conducting conduit defining a path for a temperature controlled thermal fluid to pass through the portion of the body to control a temperature of the portion during forming of the casting article, wherein the closed loop, core thermal conducting conduit includes a plurality of chambers within the portion of the body coupled together by at least one passage.

2. The core of claim 1 , wherein the closed loop, core thermal conducting conduit includes an inlet port and an outlet port, the closed loop, core thermal conducting conduit extending from the inlet port to the outlet port.

3. The core of claim 1 , further comprising a plurality of closed loop, core thermal conducting conduits, each closed loop, core thermal conducting conduit inside a different portion of the body and each defining a different path for a respective temperature controlled thermal fluid through the respective portion of the body.

4. The core of claim 1 , wherein the temperature controlled thermal fluid passing through the portion of the body controls the temperature of the portion to control a viscosity of a fluid form of the sacrificial material during forming of the casting article.

5. The core of claim 1 , wherein the closed loop, core thermal conducting conduit has a non-linear path in the portion of the body.

6. The core of claim 5 , wherein the closed loop, core thermal conducting conduit has one of: a helical shape and an elliptical shape.

7. A system, comprising:
a core for positioning within a mold for receiving a sacrificial material fluid therein to form a sacrificial material on the first core during forming of a casting article used for investment casting a component, the core including:
a body having an external shape to form at least a first section of an internal structure of the component during the investment casting, and
a closed loop, core thermal conducting conduit inside a portion of the body, the closed loop, core thermal conducting conduit defining a path for a temperature controlled thermal fluid to pass through the portion of the body to control a temperature of the portion during forming of the casting article, wherein the closed loop, core thermal conducting conduit includes a plurality of chambers within the portion of the body coupled together by at least one passage; and
a thermal fluid controller operably coupled to the first core during forming of the casting article for controlling the temperature of the temperature controlled thermal fluid passing through the core thermal conducting conduit.

8. The system of claim 7 , wherein the closed loop, core thermal conducting conduit includes:
a first closed loop, core thermal conducting conduit inside a first portion of the body, the first core thermal conducting conduit defining a first path for a first temperature controlled thermal fluid to pass through the first portion of the body to control a first temperature of the first portion during forming of the casting article, and
a second closed loop, core thermal conducting conduit inside a second portion of the body, the second core thermal conducting conduit defining a second path for a second temperature controlled thermal fluid to pass through the second portion of the body to control a second, different temperature of the second portion during forming of the casting article,
wherein the thermal fluid controller controls the temperatures of the first and second temperature controlled thermal fluids.

9. The system of claim 8 , wherein each closed loop, core thermal conducting conduit includes an inlet port and an outlet port, and each closed loop, core thermal conducting conduit extends from a respective inlet port to a respective outlet port.

10. The system of claim 7 , further comprising a second core devoid of any core thermal conducting conduit, the second core configured to form a second, different section of the internal structure of the component in conjunction with the first core.

11. The system of claim 7 , wherein the first core includes a plurality of first cores, each first core for forming a respective section of the internal structure of the component.

12. The system of claim 7 , wherein the temperature controlled thermal fluid passing through the portion of the body controls the temperature of the portion to control a viscosity of the sacrificial material fluid during forming of the casting article.

Assignees

• Gen Electric

Inventors

• Troitino Lopez Jose
• Pratt James Stuart

Classifications

• B22C9/24

  for hollow articles · CPC title

• B22C9/10

  Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title

• B22C7/02 Primary

  Lost patterns · CPC title