公开(公告)号：US11794280B2

公开(公告)日：2023-10-24

申请号：US17725813

申请日：2022-04-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mingfeng Shi ,  Sarah Tedesco ,  Qi Lu ,  Jason J. Coryell ,  Jianfeng Wang

IPC: C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/04 ,  B23K26/26 ,  C21D9/50 ,  C22C38/48 ,  C21D6/00 ,  B21D22/02

CPC classification number: B23K26/26 ,  B21D22/022 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D9/50 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C21D2211/001

Abstract: A hot formed joined blank includes a first metal blank having an ultimate tensile strength of ≥about 1300 MPa to ≤about 2000 MPa and defining a first surface, a second metal blank having an ultimate tensile strength of ≥about 400 MPa to ≤about 1200 MPa and defining a second coated surface having a coating disposed thereon. The coating includes aluminum and silicon or in alternative variations, zinc. A third surface of the second metal blank is joined to the first surface of the first metal blank to form the hot formed joined blank. A weld nugget is disposed along a boundary between the first and second metal blanks that is configured to join the first and second metal blanks, where the weld nugget optionally includes less than or equal to about 1.5 weight percent aluminum or a microstructure comprising austenite and delta-ferrite.

公开(公告)号：US11608034B2

公开(公告)日：2023-03-21

申请号：US16433448

申请日：2019-06-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chen Zhou ,  Prakash Mohan Peranandam ,  Jianfeng Wang

IPC: B60S3/00 ,  G05D1/02 ,  B08B1/04 ,  B08B5/04 ,  B08B3/04

Abstract: A vehicle cleaning system for cleaning a vehicle including a processor and a memory including computer-executable instructions that, when executed by the processor, cause the processor to perform operations. The operations include determining that a passenger compartment of the vehicle requires cleaning and identifying a type of cleaning required. The operations also include that at least one of a fragrance system, a dry particulate removal system, and a wet particulate removal system is activated in response to the type of cleaning required.

公开(公告)号：US11231079B2

公开(公告)日：2022-01-25

申请号：US16509015

申请日：2019-07-11

Applicant: GM Global Technology Operations LLC

Inventor： Henry Zhan ,  Jianfeng Wang ,  Michael L. Holly ,  Mark T. Riefe

IPC: F16D65/10 ,  B60T1/06 ,  F16D65/12

Abstract: A method for manufacturing a ferrous rotational member including the steps of turning a first portion of the friction surface at a sufficient feed rate to provide a first deformed layer on the first portion of the friction surface; fine turning a second portion of the friction surface at a sufficient feed rate to provide a second deformed layer on the second portion of the friction surface; burnishing the first and second portions of the friction surface to achieve a predetermined roughness; and nitrocarburizing the rotational member at a time and temperature sufficient for the diffusion of nitrogen atoms and carbon atoms through the deformed layer to form hardened casings having variable thickness. The ferrous rotational member may be that of a brake rotor having a hub surface and a friction surface, where the hub surface and friction surface have a variable thickness hardened casing.

公开(公告)号：US10675911B2

公开(公告)日：2020-06-09

申请号：US15895404

申请日：2018-02-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming Liu ,  JinLong Zhu ,  Jianfeng Wang

IPC: B60B3/14 ,  B60B7/06

Abstract: An isolator for a wheel hub between a brake rotor and a wheel is described, and includes a disk-shaped annular device including an inner ring, an outer ring, a first face portion, a second face portion, a plurality of apertures, a plurality of drain surface portions, and a plurality of radially-oriented drain channels disposed on the first face portion. Each drain channel is recessed in the first face portion. Each drain surface portion is recessed in the first face portion and is fluidly coupled to one of the drain channels. Each of the drain surface portions includes a continuous surface that is recessed from the first face portion between a drainage curve, a respective drain channel, and an arc that is defined on the inner ring between a first point and the respective drain channel.

公开(公告)号：US10442241B2

公开(公告)日：2019-10-15

申请号：US14916858

申请日：2013-09-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Gao ,  Bin Hu ,  Jianfeng Wang ,  Anil K. Sachdev

IPC: B60B1/08 ,  B22D17/00 ,  C22C21/02 ,  B22D21/00 ,  B21J5/00 ,  C22F1/043 ,  B21K1/38 ,  B21K1/28 ,  C21D9/00 ,  B60B3/02

Abstract: A material and method for manufacturing components. The method includes squeeze casting the material into a component of a desired shape and flow-forming the component that has been squeeze cast to refine the shape of the component. The method also includes heat treating the component to enhance the microstructure of the component and machining the component to further refine the shape.

公开(公告)号：US20190248176A1

公开(公告)日：2019-08-15

申请号：US15895404

申请日：2018-02-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming Liu ,  JinLong Zhu ,  Jianfeng Wang

IPC: B60B7/06

Abstract: An isolator for a wheel hub between a brake rotor and a wheel rim is described, and includes a disk-shaped annular device including an inner ring, an outer ring, a first face portion, a second face portion, a plurality of apertures, a plurality of drain surface portions, and a plurality of radially-oriented drain channels disposed on the first face portion. Each drain channel is recessed in the first face portion. Each drain surface portion is recessed in the first face portion and is fluidly coupled to one of the drain channels. Each of the drain surface portions includes a continuous surface that is recessed from the first face portion between a drainage curve, a respective drain channel, and an arc that is defined on the inner ring between a first point and the respective drain channel.

公开(公告)号：US20180237878A1

公开(公告)日：2018-08-23

申请号：US15436213

申请日：2017-02-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianfeng Wang ,  Charles M. Enloe ,  Jatinder P. Singh ,  Curt D. Horvath

IPC: C21D9/00 ,  C22C38/12 ,  C22C38/04 ,  C22C38/00 ,  C21D8/02 ,  C22C38/02 ,  C22C21/02 ,  B21D22/02

CPC classification number: C21D9/0068 ,  B21D22/022 ,  B21D35/005 ,  B32B15/012 ,  C21D1/34 ,  C21D8/005 ,  C21D8/0278 ,  C21D9/46 ,  C22C21/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12

Abstract: Disclosed are hot forming systems and apparatuses for metalworking components from micro-alloyed press hardened steel (PHS), methods for operating such systems/apparatuses, processes for hot forming components from micro-alloyed PHS, and components formed from such processes. A method of hot forming components from steel is disclosed. The method includes transferring a workpiece formed from a PHS micro-alloyed with niobium (e.g., 0.02-0.1 wt % Nb) to a furnace, e.g., via material handling robot. The workpiece is then heated to a peak furnace temperature and during a furnace time (e.g., total ramp and soak time) selected from a pentagon having heating time and temperature coordinates of: A (about 2 minutes, about 940° C.), B (about 2 minutes, about 1100° C.), C (about 3.5 minutes, about 1100° C.), D (about 5 minutes, about 975° C.), and E (about 5 minutes, about 940° C.). The heated workpiece is then transferred to a hot forming apparatus.

公开(公告)号：US20170314088A1

公开(公告)日：2017-11-02

申请号：US15141248

申请日：2016-04-28

Applicant: GM Global Technology Operations LLC

Inventor： Jianfeng Wang

IPC: C21D9/00 ,  B32B15/01 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/38 ,  C21D6/04 ,  C21D6/00 ,  C21D1/667 ,  C21D1/63 ,  C21D1/613 ,  C21D1/60 ,  C21D1/56 ,  C21D1/06 ,  C23C2/06

CPC classification number: C21D9/0068 ,  B32B15/013 ,  C21D1/06 ,  C21D1/56 ,  C21D1/60 ,  C21D1/613 ,  C21D1/63 ,  C21D1/667 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D6/04 ,  C21D2211/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/38 ,  C23C2/06

Abstract: Methods of selectively cooling and quenching surface regions of high-strength transformation induced plasticity (TRIP) steel are provided. The method may comprise selectively cooling at least one region of an exposed surface of a hot-formed press-hardened component comprising a high-strength steel. Prior to selective cooling, the component has a microstructure comprising≧about 5% by volume retained austenite in a matrix of martensite. The selective cooling is conducted at a temperature of≦about −40° C. and forms at least one quenched region comprising≦about 2% by volume austenite. The TRIP steel may be zinc-coated and having a surface coating comprising zinc and substantially free of liquid metal embrittlement (LME). Zinc-coated hot-formed press-hardened components, including automotive components, formed from such methods are also provided.

公开(公告)号：US20170114252A1

公开(公告)日：2017-04-27

申请号：US15302115

申请日：2014-04-09

Applicant: Xin YANG ,  GM Global Technology Operations LLC

Inventor： Xin Yang ,  Jing Zhang ,  Yongqiang Li ,  Jianfeng Wang ,  David Yang

IPC: C09J11/04 ,  C08K7/18 ,  C09J5/06

CPC classification number: C09J11/04 ,  C08K3/08 ,  C08K7/18 ,  C09J5/00 ,  C09J5/06 ,  C09J2205/102 ,  C09J2400/163

Abstract: A bonding system comprising a first substrate, a first substrate (110) having a first contact surface (115) including a plurality of grooves (140), a second substrate (120) having a second contact surface (125), an adhesive (200) in contact with the first contact surface (115), and the second contact surface (125), and a plurality of solder balls (300) positioned at least partially in the adhesive (200) and in contact with the first contact surface (115). A bonding method comprising applying, on a first contact surface (115) including a plurality of grooves (140) an adhesive (200), positioning, at least partially in the adhesive (200), each of a plurality of solder balls (300), connecting, to a portion of the adhesive (200) opposite the first contact surface (115), a second contact surface (125), and applying heat to the first contact surface (115) such that at least one of the plurality of solder balls (300) reaches a solder-ball bonding temperature whereat the solder ball bonds to the first contact surface (115).