公开(公告)号：US20220266366A1

公开(公告)日：2022-08-25

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: B23G5/06

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：US20220170138A1

公开(公告)日：2022-06-02

申请号：US17109746

申请日：2020-12-02

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Dale A. Gerard ,  Devin R. Hess ,  Herbert W. Doty ,  Daniel J. Wilson

IPC: C22C21/16 ,  F02F1/24 ,  B22F5/00 ,  B22F1/00 ,  B22F3/105

Abstract: An aluminum alloy is disclosed that is suitable for casting and additive manufacturing processes. The aluminum alloy may be used in the casting and additive manufacturing of engine blocks and/or cylinder heads of modern internal combustion engines. The aluminum alloy exhibits improved ductility and fatigue properties suitable for elevated operating temperatures from about 250° C. to 350° C. The alloy includes about, by weight, 4-10% Copper (Cu), 0.1-1.0% Manganese (Mn), 0.2 to 5% Magnesium (Mg), 0.01-1.0% Cerium (Ce), 0.01-2% Nickel (Ni), 0.01-0.8% Chromium (Cr), 0.01-1.0% Zirconium (Zr); 0.01-1.0% Vanadium (V), 0.01-0.3% Cobalt (Co), 0.01-1.0% Titanium (Ti), 1-200 ppm Boron (B), 1-200 ppm Strontium (Sr), 0.5% max Iron (Fe), 0.1% max other trace elements, and balance of aluminum (Al).

公开(公告)号：US11267191B2

公开(公告)日：2022-03-08

申请号：US16405471

申请日：2019-05-07

Applicant: GM Global Technology Operations LLC

Inventor： Yucong Wang ,  David M. Zini ,  Qigui Wang ,  Brennon L. White

IPC: B29C64/118 ,  B29L15/00 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/209 ,  B33Y80/00

Abstract: An additive manufacturing method includes providing a first composite material and forming a composite part matrix using the first composite material and defining a first layer, applying a first fiber reinforcing material to the composite part matrix atop and in contact with the first layer of the composite part matrix such that fibers of the first fiber reinforcing material are oriented in a first direction and form a second layer on the composite part matrix, applying a second fiber reinforcing material to the composite part matrix atop and in contact with the first fiber reinforcing material such that fibers of the second fiber reinforcing material are oriented in a second direction orthogonal to the first direction and form a third layer on the composite part matrix, applying the first composite material to the composite part matrix, and curing the composite part matrix to create a composite product.

公开(公告)号：US20210402504A1

公开(公告)日：2021-12-30

申请号：US16913406

申请日：2020-06-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Daniel J. Wilson ,  Huaxin Li ,  James D. Cremonesi ,  Jianghuai Yang ,  Liang Wang ,  Qigui Wang

IPC: B23K20/12 ,  B23K20/227 ,  B23K20/02

Abstract: A method of joining first and second parts formed of dissimilar materials is provided. The first part defines a first part contacting surface having a frustoconical shape. The first and second parts are brought into contact with one another, with one of the first and second parts being rotated while the other remains stationary, so as to generate frictional heat between the contacting surfaces of the parts, the generated frictional heat producing softened adjacent regions in the first and second parts. A force is applied to the first and second parts to plastically deform the softened adjacent regions and to forge together the first and second parts to form a solid-state joint. A composite torsional damper hub assembly includes a steel stem and a damper hub welded to the stem at an interface. The damper hub is formed of aluminum or an aluminum alloy, and the interface is generally frustoconical.

公开(公告)号：US11116097B2

公开(公告)日：2021-09-07

申请号：US16528848

申请日：2019-08-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qigui Wang ,  Song He ,  Seongchan Pack ,  Angela P. Willis

IPC: H05K5/03 ,  G10K11/168 ,  B60R16/02 ,  B32B5/18 ,  B32B15/04 ,  B32B15/20 ,  H05K7/20

Abstract: A damping cover for an integrated power electronics module (IPEM), the damping cover generally defined by a top side and a bottom side, wherein the bottom side is configured to mate adjacent with or contiguous to a power inverter module (PIM) of the IPEM. The damping cover can include an aluminum foam core including a top surface generally corresponding to the top side of the damping cover and a bottom surface generally corresponding to the bottom side of the damping cover and a polymeric over-molding or non-porous aluminum outer layer covering the top surface and/or a polymeric over-molding or non-porous aluminum outer layer covering the bottom surface. The bottom side of the damping cover can mate adjacent with or contiguous to the PIM. The polymeric material over-molding can completely impregnate the aluminum foam core. The aluminum foam core can have a density of about 0.15 g/cm3 to about 1.0 g/cm3.

公开(公告)号：US20210207253A1

公开(公告)日：2021-07-08

申请号：US16737444

申请日：2020-01-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe Li ,  Yucong Wang ,  Qigui Wang ,  Wenying Yang

IPC: C22F1/047 ,  C22C21/08 ,  B21D37/16 ,  B21D37/18 ,  B21D37/01

Abstract: An apparatus for localized patterned surface hardening for light-weight alloys to increase wear resistance under lubricated contact is provided. The apparatus includes a first metallic structure and a second metallic structure. The second metallic structure includes a contact surface and is disposed in lubricated contact with the first metallic structure at the contact surface, wherein the second metallic structure is constructed with a lighter-than-steel material and wherein the contact surface includes a localized surface hardened pattern.

公开(公告)号：US10883154B2

公开(公告)日：2021-01-05

申请号：US16056990

申请日：2018-08-07

Applicant: GM Global Technology Operations LLC

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

IPC: C21D9/30 ,  F16C3/08 ,  C21D1/18 ,  C21D1/58 ,  C22C38/00

Abstract: A method for manufacturing a crankshaft for an internal combustion engine with a plurality of journals having a hardened case with a first microstructure. The crankshaft is comprised of a steel comprising between about 0.3 wt % and 0.77 wt % Carbon. The first microstructure of the hardened case of the journals comprises between about 15% and 30% ferrite and a balance of martensite and the resultant subsurface residual stress between 310 MPa and 620 MPa.

公开(公告)号：US20200340090A1

公开(公告)日：2020-10-29

申请号：US16394394

申请日：2019-04-25

Applicant: GM Global Technology Operations LLC

Inventor： Zhe Li ,  Wenying Yang ,  Qigui Wang ,  Dale A. Gerard

IPC: C22F1/04 ,  B22D17/00 ,  B22D19/00 ,  C23C4/10

Abstract: A wear-resistant component includes a substrate formed from a metal, defining a bore, and having a bore surface. The substrate includes a first region having a first microstructure adjacent the bore surface and a first average particle size. The substrate also includes a second region having a second microstructure adjacent the first microstructure and a second average particle size. The first average particle size is larger than the second average particle size. A system and a method of forming the wear-resistant coating are also described.

公开(公告)号：US20190323448A1

公开(公告)日：2019-10-24

申请号：US15956805

申请日：2018-04-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianghuai Yang ,  Qigui Wang ,  Benjamin E. Slattery ,  Melani R. Wright ,  Huaxin Li ,  Dale A. Gerard ,  Daniel J. Wilson

IPC: F02F1/00 ,  B22D19/08 ,  B22D19/00 ,  B22D13/10

Abstract: A method of manufacturing a cylinder liner for an engine block for a vehicle propulsion system and the cylinder liner made from the method. The method includes providing a cylinder liner mold having a cylindrical inner surface, masking a first portion of the cylindrical inner surface, applying a coating to a second portion of the cylindrical inner surface, and forming a cylinder liner by solidifying molten metal in the cylinder liner mold.

公开(公告)号：US10253721B2

公开(公告)日：2019-04-09

申请号：US15485430

申请日：2017-04-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qigui Wang ,  Bhuvaneswara R Dharmavarapu ,  Cherng-chi Chang

IPC: F02F1/00 ,  B22D19/00 ,  F02F1/02 ,  F02F1/16 ,  F04B39/12 ,  F02B23/06

Abstract: A cylinder liner for an engine block includes a first engine block bonding surface, and a second engine block bonding surface that provides a lower heat transfer coefficient between the cylinder liner and an adjacent engine block material than the first engine block bonding surface. The second engine block bonding surface extends a substantial portion of the axial length of the cylinder liner.