公开(公告)号：US20230235424A1

公开(公告)日：2023-07-27

申请号：US17889812

申请日：2022-08-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qi Lu ,  Zhou Wang ,  Jianfeng Wang

IPC: C21D9/52 ,  C22C38/38 ,  C22C38/34 ,  C21D8/02 ,  C21D6/00

CPC classification number: C21D9/52 ,  C22C38/38 ,  C22C38/34 ,  C21D8/0221 ,  C21D8/0205 ,  C21D6/008 ,  C21D6/005 ,  C21D6/002 ,  C21D2221/00 ,  C21D2211/008

Abstract: A method of forming a component having a cross-section with a bend radius includes providing a work-piece blank from press-hardened steel (PHS). The method also includes austenitizing the work-piece blank in a furnace via heating the strip of sheet metal to achieve therein an austenite microstructure, including soaking the work-piece blank for a predetermined amount of time. The method additionally includes quenching the austenitized work-piece blank to achieve therein a martensitic matrix microstructure with dispersed chromium-enriched carbide. The method also includes roll-forming the austenitized and quenched work-piece blank to generate the cross-section and the bend radius. The method may further include locally heating the bend radius area during the roll-forming of the cross-section to reduce an amount of chromium-enriched carbide in the martensitic matrix microstructure inside the bend radius area relative to the microstructure outside the bend, and thereby generating the component having high strength, ductility, and wear resistance.

公开(公告)号：US20210237507A1

公开(公告)日：2021-08-05

申请号：US16780303

申请日：2020-02-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Steven J. Schuster ,  Ming Liu ,  Jianfeng Wang

IPC: B60B3/00 ,  B60B3/12

Abstract: A method of assembling a vehicle road wheel includes providing a tool fixture configured to support a press-fit load and arranging on the tool fixture an isolation plate defining a plate fastener aperture and having a locating projection. The method additionally includes arranging on the isolation plate a wheel subassembly having a hub surface and an opposing fastener surface and defining a hub aperture and a wheel fastener aperture, such that the hub surface rests against the isolation plate. The method also includes aligning the hub aperture with the locating projection and the wheel fastener aperture with the plate fastener aperture. The method additionally includes installing an insert into the wheel fastener aperture and engaging the insert with the plate fastener aperture. Furthermore, the method includes applying a load to the insert to press-fit the insert into the isolation plate at the plate fastener aperture and thereby assemble the wheel.

公开(公告)号：US20210065993A1

公开(公告)日：2021-03-04

申请号：US17050084

申请日：2018-04-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Helen Liu ,  Xiaochao Que ,  Dewen Kong ,  Jianfeng Wang

IPC: H01G11/06 ,  H01G11/28 ,  H01G11/24 ,  H01G11/46 ,  H01G11/50 ,  H01M10/0525 ,  H01M4/48 ,  H01M10/0587 ,  H01M12/00

Abstract: Hybrid electrochemical cells and modules include an anode two-sided current collector a coated with host material in anode region(s) and a cathode two-sided current collector coated with active material in cathode region(s), and one or more of the anode current collector and the cathode current collector is coated with capacitor material in one or more distinct, non-overlapping capacitor regions. A hybrid anode and/or cathode can include gaps between capacitor regions and anode regions and cathode regions. The capacitor material applied to an electrode is different from the host or active material thereof. Active material includes lithium metal oxides and lithium metal phosphates such as LiFePO4, Li(NixMnyCoz)O2, and/or LiMn2O4; host material includes graphite, silicon, silicon-Li/Sn/Cu alloys, Si/Co/Fe/TiSn oxides, and low-surface area carbon; and capacitor material includes activated carbon, metal oxides, and metal sulfides.

公开(公告)号：US20190393569A1

公开(公告)日：2019-12-26

申请号：US16013254

申请日：2018-06-20

Applicant: GM Global Technology Operations LLC

Inventor： Dave G. Rich ,  Saad Hasan ,  Jeffrey Wyka ,  Jianfeng Wang ,  Dewen Kong ,  Haijing Liu

IPC: H01M10/617 ,  H01M2/10 ,  H01M10/625 ,  H01M10/6562 ,  H01M10/6572 ,  H01M10/6556 ,  H01M2/18 ,  H01M10/6563 ,  B60R16/033

Abstract: A battery enclosure shaped and sized to accept and surround a battery includes an outer case defining an aperture and having a base forming a bottom of the battery enclosure, the case having a first wall connected to a second wall, the second wall connected to a third wall, and a fourth wall portion connected to the first and third walls, each of the first, second, third, and fourth walls extending orthogonally from the base. The battery enclosure including a separable outer lid shaped to fit around the aperture of the case. The outer case and the outer lid having a material having thermal conductivity of less than about 0.3 W/mK, the battery enclosure has an air inlet selectively providing airflow to the battery enclosure and an air outlet selectively providing airflow from the battery enclosure, the outer case has a first thickness, the outer lid portion has a second thickness.

公开(公告)号：US20190145479A1

公开(公告)日：2019-05-16

申请号：US15810770

申请日：2017-11-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianfeng Wang ,  Chengwu Duan

IPC: F16F1/32

Abstract: Systems and methods are provided with elastic elements that have configurable characteristics of force and displacement for a variety of applications. An elastic element is configured to deflect from a base shape when a load is applied and to resume the base shape when the load is removed. The elastic element formed of a metallic glass material. The elastic element applies a force to a moveable element.

公开(公告)号：US20180237877A1

公开(公告)日：2018-08-23

申请号：US15435418

申请日：2017-02-17

Applicant: GM Global Technology Operations LLC

Inventor： Jianfeng Wang ,  Charles M. Enloe

IPC: C21D9/00 ,  C23C2/06 ,  C23C2/02 ,  C23C2/28 ,  C22C38/04 ,  C22C38/02 ,  C21D1/06 ,  C21D3/04 ,  C21D8/00

CPC classification number: C21D9/0068 ,  C21D1/06 ,  C21D3/04 ,  C21D8/005 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C23C2/02 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

Abstract: Methods of reducing liquid metal embrittlement (LME) in zinc-coated high-strength steel alloys are provided. In one variation, the method includes decarburizing an exposed surface of a high-strength steel alloy to form a decarburized surface layer. The decarburized surface layer has a thickness of less than or equal to about 50 micrometers. The decarburized surface layer may have greater than or equal to about 80 volume % ferrite. The method also includes applying a zinc-based coating to the decarburized surface layer. A blank is formed from the high-strength steel alloy. The method also includes heating and press hardening the blank to form a press-hardened component having an ultimate tensile strength of greater than or equal to about 1,100 MPa that is substantially free of liquid metal embrittlement.

公开(公告)号：US20170209948A1

公开(公告)日：2017-07-27

申请号：US15329191

申请日：2014-07-28

Applicant: GM Global Technology Operations LLC

Inventor： Xin Yang ,  Jianfeng Wang ,  Yongqiang Li ,  Blair E. Carlson

IPC: B23K3/06 ,  B23K35/02

CPC classification number: B23K3/0638 ,  B23K3/0623 ,  B23K35/025 ,  H01R4/04 ,  H01R12/52 ,  H05K3/321 ,  H05K3/36 ,  H05K2203/0126 ,  H05K2203/1115 ,  H05K2203/163

Abstract: The present disclosure relates to a method, to distribute a solder-reinforced adhesive on a first substrate (110), comprising (i) positioning the first substrate (110) to receive an adhesive composite (250) including, an adhesive (200) and a plurality of solder balls (300) on a first contact surface (115) of the first substrate (110), (ii) applying, by a distribution nozzle (205), on the first contact surface (115), the adhesive composite (250), and (iii) distributing, by a conductive spreader (520), the adhesive composite (250). The present disclosure further relates to a method to determine electrical resistance of an solder-reinforced adhesive between a first substrate (110) and a second substrate (120), comprising (i) applying, by a distribution nozzle (205), on a first contact surface (115) of the first substrate (110), an adhesive composite (250) including, an adhesive (200) and a plurality of solder balls (300), (ii) positioning, to a portion of the adhesive composite (250) opposite the first contact surface (115), a second contact surface (125) of the second substrate (120), (iii) attaching, to the first substrate (110) and the second substrate (120), at least one electrical resistance detector (550), and (iv) applying, to the first substrate (110) and the second substrate (120), an electrical current.

公开(公告)号：US09694420B2

公开(公告)日：2017-07-04

申请号：US15164504

申请日：2016-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bin Hu ,  Jianfeng Wang ,  Xin Yang ,  Anil K. Sachdev

IPC: B22D19/02 ,  B22D17/22 ,  B22D19/00 ,  B22D21/00 ,  B22D25/02 ,  B60J5/04 ,  B22C9/08

CPC classification number: B22D19/02 ,  B22C9/08 ,  B22D17/22 ,  B22D19/0081 ,  B22D21/007 ,  B22D25/02 ,  B60J5/045 ,  B60J5/0455 ,  B60J5/0458 ,  B60J5/0466 ,  B60J5/0483

Abstract: A method for manufacturing an inner door panel for a vehicle side door that employs a die casting process. The method includes providing a die cast mold having opposing mold halves that combine to define a die cavity configured to provide the inner door panel. An impact beam is positioned in the mold cavity prior to combining the first mold half and the second mold half, and a molten metal is provided to the mold cavity so that molten metal flows into all areas of the mold cavity and around the impact beam after the first mold half and the second mold half are combined. A solidified molded inner door panel is then removed from the die cast mold that includes an encapsulated impact beam.

公开(公告)号：US20250075282A1

公开(公告)日：2025-03-06

申请号：US18789217

申请日：2024-07-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhou WANG ,  Zhao Li ,  Wei Xu ,  Jianfeng Wang

IPC: C21D9/00 ,  B23K26/24 ,  B32B15/04 ,  B32B15/18 ,  C21D1/18 ,  C21D6/00 ,  C21D8/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

Abstract: A method for manufacturing a component includes providing a first PHS blank including an aluminum silicon (AlSi) coating; providing a second PHS blank, wherein the second PHS blank includes chromium (Cr) at a higher concentration than the first PHS blank and does not include the aluminum silicon (AlSi) coating; welding the first PHS blank to the second PHS blank to form a welded blank including a weld seam between the first PHS blank and the second PHS blank; transferring the welded blank to a furnace; heat soaking the welded blank in the furnace at a predetermined temperature for a predetermined period; and pressing, forming, and quenching the welded blank in a stamp/press to form a component.

公开(公告)号：US20250066868A1

公开(公告)日：2025-02-27

申请号：US18468256

申请日：2023-09-15

Applicant: GM Global Technology Operations LLC

Inventor： Sarah Tedesco ,  Mingfeng Shi ,  Jianfeng Wang ,  Zhou Wang ,  Jason J. Coryell ,  Jiachen Pang ,  Zhen Chen ,  Shane Michael Anderson ,  Daniel Baker

IPC: C21D1/42 ,  C21D6/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

Abstract: A method to achieve variable properties of a component using a coating free press hardened steel comprises: transferring a blank of a coating free press hardened steel (CFPHS) material having base blank properties into a heating unit having multiple induction heating coils; heating the blank within the heating unit to create a modified blank having differing modified blank properties throughout the modified blank compared to base blank properties; moving the modified blank out of the heating unit into a die; and forming a shaped part by operation of the die creating a finished CFPHS part.