US 11,305,348 B2Granted

Methods for producing gas turbine engine rotors and other powdered metal articles having shaped internal cavities

AssigneeHoneywell International Inc.

InventorsDeanna Pinar Chase, Amandine Miner, Harry Lester Kington, Anthony Martinez

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Abstract

Embodiments of a methods for producing gas turbine engine rotors and other powdered metal articles having shaped internal cavities are provided. In one embodiment, the method includes consolidating a powdered metal body utilizing a hot isostatic pressing process to produce a rotor preform in which elongated sacrificial tubes are embedded. Acid or another solvent is directed into solvent inlet channels provided in the elongated sacrificial tubes to chemically dissolving the elongated sacrificial tubes and create shaped cavities within the rotor preform. The rotor preform is subject to further processing, such as machining, prior to or after chemical dissolution of the elongated sacrificial tubes to produce the completed gas turbine engine rotor.

Claims7

Dependent claims

A method for manufacturing a Powdered Metal (PM) component, the method comprising:

positioning elongated sacrificial tubes in a PM body, the elongated sacrificial tubes twisting about an axis of the PM body and converging toward the axis when moving along the axis, the elongated sacrificial tubes comprising solvent inlet channels and longitudinal axes along which the solvent inlet channels extend;
consolidating the PM body utilizing a Hot Isostatic Pressing (HIP) process to produce a component preform in which the elongated sacrificial tubes are embedded;
chemically dissolving the elongated sacrificial tubes by directing a solvent into the solvent inlet channels to create shaped cavities within the component preform;
and
prior to or after chemical dissolution of the elongated sacrificial tubes, further processing the component preform to produce the PM component.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/996,569Filed 18 Aug 2020 · division
Priority: 22 Sep 2014
Published: US 2020/0376561 A13 Dec 2020
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B22F 5/009
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product: of turbine components other than…
B22F 3/15
Simultaneously: hot isostatic pressing
B22F 3/24
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted…:…
B23P 15/006
Making specific metal objects by operations not covered by a single other subclass or a group in this subclass: turbine wheels

Family

Application14/492,302Parent of this division · filed 22 Sep 2014
Application16/040,199Parent of this division · filed 19 Jul 2018
US 10,040,122 B2Parent of this division · filed 7 Aug 2018
US 2020/0376561 A1Pre-grant publication · published 3 Dec 2020
US 10,807,166 B2Parent of this division
US 2016/0082510 A1Published application
US 2018/0326496 A1Published application
US 11,305,348 B2This patent

From the US filing history. Foreign family members aren’t listed.

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