Patents by Inventor Gangshu Shen
Gangshu Shen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11951528Abstract: The disclosure describes example systems and techniques for controlling microstructure of a superalloy substrate by controlling temperature during forging and using multiple die forging stages to formation of grain boundary phases of the superalloy, and components formed by such example systems and techniques. The method includes heating a substrate to within a forging temperature range. The substrate includes a nickel-based superalloy, and the forging temperature range is below an eta phase solvus temperature of the substrate. The method includes applying a plurality of die forging stages to the substrate to form a component preform. The method includes maintaining the substrate within the forging temperature range during application of the plurality of die forging stages and cooling the component preform.Type: GrantFiled: August 19, 2021Date of Patent: April 9, 2024Assignees: Rolls-Royce Corporation, Rolls-Royce North American Technologies, Inc.Inventors: Timothy Paul Fuesting, Gangshu Shen, Eugene Sun
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Publication number: 20220055093Abstract: The disclosure describes example systems and techniques for controlling microstructure of a superalloy substrate by controlling temperature during forging and using multiple die forging stages to formation of grain boundary phases of the superalloy, and components formed by such example systems and techniques. The method includes heating a substrate to within a forging temperature range. The substrate includes a nickel-based superalloy, and the forging temperature range is below an eta phase solvus temperature of the substrate. The method includes applying a plurality of die forging stages to the substrate to form a component preform. The method includes maintaining the substrate within the forging temperature range during application of the plurality of die forging stages and cooling the component preform.Type: ApplicationFiled: August 19, 2021Publication date: February 24, 2022Inventors: Timothy Paul Fuesting, Gangshu Shen, Eugene Sun
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Patent number: 11001903Abstract: In some examples, an apparatus includes a pallet supporting a plurality of workpieces, the pallet including through-holes structured to pass a quenching fluid. In some examples, the apparatus further includes a reservoir of quenching fluid configured to provide the quenching fluid, and a plurality of upturned wall portions extending from the pallet and substantially surrounding the exteriors of the plurality of workpieces. The plurality of upturned wall portions may be located in relative orientation to the plurality of workpieces to regulate heat transfer coefficients of the plurality of workpieces during a quenching operation.Type: GrantFiled: November 8, 2017Date of Patent: May 11, 2021Assignee: Rolls-Royce CorporationInventors: Gangshu Shen, Nathan J. Cooper, Nathan Wesley Ottow, Robert Louis Goetz, John F. Matlik
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Patent number: 10303827Abstract: An example system may include a computing device including a finite element analysis module solving for a finite element model representing a component including a metal or an alloy and including a plurality of respective elements. The finite element analysis module may solve a respective stress St and a respective temperature Tt at each respective element during the predetermined cooling operating. The finite element analysis module may determine a respective impact energy ET based on the temperature Tt and cooling rate, using a predetermined cooling rate-dependent energy relationship that relates a temperature of the metal or the alloy to an impact energy, determine a respective weakness index Wt=[A×ET/St]n (A being a predetermined constant, n being a predetermined real number greater than or equal to 1), and identify a respective element having a minimum weakness index less than a predetermined weakness index threshold as a cracking-prone element.Type: GrantFiled: April 5, 2016Date of Patent: May 28, 2019Assignee: Rolls-Royce CorporationInventors: Gangshu Shen, Eugene Sun, Stephanie M. Janicek, Robert A. Ress, III, Brian Drier, Mark E. Bartolomeo
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Publication number: 20180066330Abstract: In some examples, an apparatus includes a pallet supporting a plurality of workpieces, the pallet including through-holes structured to pass a quenching fluid. In some examples, the apparatus further includes a reservoir of quenching fluid configured to provide the quenching fluid, and a plurality of upturned wall portions extending from the pallet and substantially surrounding the exteriors of the plurality of workpieces. The plurality of upturned wall portions may be located in relative orientation to the plurality of workpieces to regulate heat transfer coefficients of the plurality of workpieces during a quenching operation.Type: ApplicationFiled: November 8, 2017Publication date: March 8, 2018Inventors: Gangshu Shen, Nathan J. Cooper, Nathan Wesley Ottow, Robert Louis Goetz, John F. Matlik
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Patent number: 9840747Abstract: In some examples, an apparatus includes a pallet supporting a plurality of workpieces, the pallet including through-holes structured to pass a quenching fluid. In some examples, the apparatus further includes a reservoir of quenching fluid configured to provide the quenching fluid, and a plurality of upturned wall portions extending from the pallet and substantially surrounding the exteriors of the plurality of workpieces. The plurality of upturned wall portions may be located in relative orientation to the plurality of workpieces to regulate heat transfer coefficients of the plurality of workpieces during a quenching operation.Type: GrantFiled: December 18, 2013Date of Patent: December 12, 2017Assignee: Rolls-Royce CorporationInventors: Gangshu Shen, Nathan J. Cooper, Nathan Wesley Ottow, Robert Louis Goetz, John F. Matlik
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Publication number: 20170286579Abstract: An example system may include a computing device including a finite element analysis module solving for a finite element model representing a component including a metal or an alloy and including a plurality of respective elements. The finite element analysis module may solve a respective stress St and a respective temperature Tt at each respective element during the predetermined cooling operating. The finite element analysis module may determine a respective impact energy ET based on the temperature Tt and cooling rate, using a predetermined cooling rate-dependent energy relationship that relates a temperature of the metal or the alloy to an impact energy, determine a respective weakness index Wt=[A×ET/St]n (A being a predetermined constant, n being a predetermined real number greater than or equal to 1), and identify a respective element having a minimum weakness index less than a predetermined weakness index threshold as a cracking-prone element.Type: ApplicationFiled: April 5, 2016Publication date: October 5, 2017Inventors: Gangshu Shen, Eugene Sun, Stephanie M. Janicek, Robert A. Ress, III, Brian Drier, Mark E. Bartolomeo
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Publication number: 20140230972Abstract: In some examples, an apparatus includes a pallet supporting a plurality of workpieces, the pallet including through-holes structured to pass a quenching fluid. In some examples, the apparatus further includes a reservoir of quenching fluid configured to provide the quenching fluid, and a plurality of upturned wall portions extending from the pallet and substantially surrounding the exteriors of the plurality of workpieces. The plurality of upturned wall portions may be located in relative orientation to the plurality of workpieces to regulate heat transfer coefficients of the plurality of workpieces during a quenching operation.Type: ApplicationFiled: December 18, 2013Publication date: August 21, 2014Applicant: Rolls-Royce CorporationInventors: Gangshu Shen, Nathan J. Cooper, Nathan Wesley Ottow, Robert Louis Goetz, John F. Matlik
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Patent number: 6387197Abstract: A method is set forth for processing titanium and titanium alloys into titanium articles, in which the titanium exhibits enhanced ultrasonic inspection results for determining its acceptability in microstructurally sensitive titanium applications. The method for processing titanium comprises providing titanium at a temperature above its &bgr;-transus temperature; quenching the titanium from a temperature above the &bgr;-transus temperature, the step of quenching titanium forming an &agr;-plate microstructure in the titanium; and deforming the quenched titanium into a titanium article, the step of deforming the quenched titanium transforming the &agr;-plate microstructure into discontinuous &agr; particles without crystallization textures. The discontinuous-randomly textured &agr; particles lead to a reduction in ultrasonic noise during ultrasonic inspection.Type: GrantFiled: January 11, 2000Date of Patent: May 14, 2002Assignees: General Electric Company, Ladish Company, Inc.Inventors: Bernard Patrick Bewlay, Michael Francis Xavier Gigliotti, Jr., David Ulrich Furrer, Gangshu Shen, Jacek Marian Franczak