公开(公告)号：US11597023B2

公开(公告)日：2023-03-07

申请号：US17181438

申请日：2021-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lokesh Choudhary ,  Tiruttani Munikamal ,  Qigui Wang ,  David A. Wulbrecht

IPC: B23G5/20

Abstract: A hybrid threading tap includes a reamer portion and a thread cutting portion having a plurality of cutting teeth. The thread cutting portion is arranged with the reamer portion along the longitudinal axis. The reamer portion is configured to be advanced within a hole of a workpiece to plastically deform and expand the hole to an expanded hole and provide the expanded hole with a zone of residual compressive stress. The plurality of cutting teeth is configured to cut a threading into the expanded hole within the zone.

公开(公告)号：US20220355369A1

公开(公告)日：2022-11-10

申请号：US17307295

申请日：2021-05-04

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Andrew Thomas Cunningham ,  Zach Steffes ,  Jeffrey B. Harris ,  Brennon L. White ,  Liang Wang

IPC: B22C9/08 ,  B01D39/20 ,  B28B1/00

Abstract: A method to manufacture a ceramic foam filter includes: sintering a filter body to a temperature greater than a molten metal to be filtered through the body; creating multiple tortuous path channels extending through the filter body individually having a repeated and controlled passage geometry creating a continuously changing diameter and area of a flow path through the multiple tortuous path channels causing localized increases and decreases in molten metal flow rate through the multiple tortuous path channels; and applying a mixture of at least one ceramic powder and at least one binder using additive manufacturing to shape the filter body including the multiple tortuous path channels.

公开(公告)号：US11473456B2

公开(公告)日：2022-10-18

申请号：US17021417

申请日：2020-09-15

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Devin R. Hess ,  Jeffrey Harris ,  Herbert W. Doty ,  Dale A. Gerard

IPC: F01L3/00 ,  F01L3/04 ,  F02F1/24 ,  B33Y80/00 ,  B22F10/00

Abstract: A cylinder head valve seat of an automobile vehicle includes a valve seat having a valve seat surface integrally joined to an engagement end. The engagement end includes multiple materials extending through a cross section of the engagement end. The multiple materials include: a first material having a first thermal conductivity; and a second material having a second thermal conductivity higher than the thermal conductivity of the first material, wherein the first material transitions into the second material.

公开(公告)号：US20220097173A1

公开(公告)日：2022-03-31

申请号：US17035821

申请日：2020-09-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Liang Wang ,  Qigui Wang ,  Daniel J. Wilson

IPC: B23K26/342 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K37/06

Abstract: Systems and methods are provided for controlling additive manufacturing material deposition using a magnetic field. A system may include a build surface; a material depositor through which a magnetically responsive material is deposited on the build surface; an energy source; and a magnet set. The magnet set applies the magnetic field to the build surface and/or to the material depositor. The magnetic field is configured to attract the magnetically responsive material while the energy source melts the magnetically responsive material.

公开(公告)号：US20220097125A1

公开(公告)日：2022-03-31

申请号：US17034530

申请日：2020-09-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lokesh Choudhary ,  Tiruttani Munikamal ,  Qigui Wang ,  Liang Wang

IPC: B22C9/10 ,  B22D17/22

Abstract: A hybrid core for manufacturing a cast component, the hybrid core including a sand core portion having an exterior shape configured to define an interior feature of the cast component. The hybrid core also includes a metal chill element embedded within the sand core portion. The metal chill element is configured to locally absorb heat energy from the cast component during cooling of the cast component and solidification thereof. The metal chill element is constructed and arranged within the sand core portion to be removed during shake out from the cast component subsequent to the solidification thereof. A system and a method for manufacturing a cast component using such a hybrid core are also envisioned.

公开(公告)号：US10898948B2

公开(公告)日：2021-01-26

申请号：US16376667

申请日：2019-04-05

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Christopher D. Cogan ,  Michael J. Walker ,  Garrold DeGrace ,  Thomas Gustafson ,  Dale Gerard

IPC: B22C9/02 ,  B22D29/00

Abstract: A method of manufacturing an aluminum alloy cylinder head includes providing a precision sand core and mold assembly, a liquid aluminum alloy delivery system, and a mold manipulator system. The precision sand core and mold assembly is disposed in the mold manipulator system and the liquid aluminum alloy delivery system includes an in-furnace ultrasonic actuator and a launder tube having at least an ultrasonic actuator. The liquid aluminum alloy delivery system is sealed to the precision sand core and mold assembly and provides liquid aluminum alloy into a gating system of the precision sand core and mold assembly. The precision sand core and mold assembly is rotated approximately 180°. The precision sand core and mold assembly is vibrated.

公开(公告)号：US10689733B2

公开(公告)日：2020-06-23

申请号：US15896615

申请日：2018-02-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael J. Walker ,  Qigui Wang

IPC: C22C1/02 ,  C22C21/00 ,  C22C1/03 ,  C22F1/04 ,  C22C9/00 ,  C22C45/00 ,  C22C45/08

Abstract: A method of making an aluminum alloy containing zirconium includes heating a first composition including aluminum to a first temperature. The first temperature is greater than or equal to a liquidus temperature of the first composition. The method further includes adding a second composition including a copper-zirconium compound to the first composition. The method further includes decomposing at least a portion of the copper-zirconium compound into copper and zirconium. The method further includes forming a third composition by dissolving at least some of the copper from the decomposing in the aluminum of the first composition. The method further includes cooling the third composition to a second temperature to form a first solid material. The second temperature is less than or equal to a solidus temperature of the third composition. The method further includes heat treating the first solid material to form the aluminum alloy containing zirconium.

公开(公告)号：US20200063248A1

公开(公告)日：2020-02-27

申请号：US16106445

申请日：2018-08-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianghuai Yang ,  Qigui Wang ,  Daniel J. WILSON ,  James D. Cremonesi ,  Paul J. Gelazin

IPC: C22C38/60 ,  C22C38/42 ,  C22C38/54 ,  C22C38/50 ,  C22C38/46 ,  C22C38/44 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00

Abstract: A steel alloy and automotive components, such as crankshafts, produced therefrom are provided. The steel alloy includes iron, about 0.34 to about 0.40 weight percent carbon, about 0.8 to about 1.2 weight percent manganese, about 0.40 to about 0.60 weight percent silicon, about 0.04 to about 0.07 weight percent sulfur, about 0.9 to about 1.2 weight percent chromium, about 0.20 to about 0.35 weight percent molybdenum, about 0.08 to about 0.15 weight percent vanadium, and about 0.02 to about 0.06 weight percent aluminum. The steel alloy may also include up to 0.03 weight percent phosphorus, up to 0.25 weight percent nickel, up to 0.20 weight percent copper, up to 0.03 weight percent titanium, up to 0.03 weight percent nitrogen, and up to 0.002 weight percent boron.

公开(公告)号：US10526996B2

公开(公告)日：2020-01-07

申请号：US15233254

申请日：2016-08-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianghuai Yang ,  Qigui Wang ,  Martin S Kramer ,  Dale A Gerard

IPC: F02F1/00 ,  B24B5/06 ,  C23C4/12 ,  F02F1/18 ,  F02F7/00

Abstract: An improved surface activation technique improves the adhesion of thermal spray coatings, which is useful for engine cylinder bores. The new method includes compressing the cylinder bore surface to create a surface profile on the surface, such as through rolling a roller along the surface. An engine block is also provided, which includes a plurality of cylinder bores, each cylinder bore having an inner surface, and each inner surface having a surface profile that includes a helical groove and other surface profiles formed in the inner surface. A thermal spray coating is formed on the inner surface of each cylinder bore, the thermal spray coating being adhered to the surface profile of the inner surface. A roller assembly for activating the surface is also provided.

公开(公告)号：US20190300988A1

公开(公告)日：2019-10-03

申请号：US15938186

申请日：2018-03-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  SHANGHAI JIAO TONG UNIVERSITY

Inventor： Qigui Wang ,  Wenying Yang ,  Bing Ye

IPC: C22C21/02

Abstract: Aluminum alloys having improved properties are provided. The alloy includes about 13 to about 17 weight percent silicon, about 0.3 to about 0.6 weight percent magnesium, and at least 75 weight percent aluminum. The alloy may include copper up to about 2.0 weight percent; iron up to about 0.8 weight percent; manganese up to about 1.0 weight percent; nickel up to about 1.0 weight percent; zinc up to about 0.8 weight percent; titanium up to about 0.5 weight percent; zirconium up to about 0.5 weight percent; vanadium up to about 0.5 weight percent; and other trace elements up to about 0.1 weight percent. In addition, the alloy may contain about 50 to about 1000 ppm of strontium and about 10 about 100 ppm phosphorus. Also disclosed is a die cast article, such as transmission clutch housing.