公开(公告)号：US11834732B2

公开(公告)日：2023-12-05

申请号：US17529950

申请日：2021-11-18

Applicant: GM Global Technology Operations LLC ,  Shanghai Jiao Tong University

Inventor： Qigui Wang ,  Wenying Yang ,  Bing Ye

IPC: C22C1/02

CPC classification number: C22C1/026

Abstract: A method of eliminating microstructure inheritance of hypereutectic aluminum-silicon alloys. The method includes heating a first amount of the Al—Si alloy to a predetermined temperature above a liquidus temperature of the Al—Si alloy to form a first amount melt; holding the first amount melt at the predetermined temperature for a predetermined amount of time; stirring the first amount melt during the predetermined amount of time; heating a second amount of the Al—Si alloy above the liquidus temperature of the Al—Si alloy to form a second amount melt; and mixing the first amount melt and the second amount melt to form a processed Al—Si casting alloy. The predetermined temperature is between about 750° C. to 850° C. The predetermined amount of time is between 0.1 hour to 0.5 hour. The processed Al—Si casting alloy contains about 30 wt % to about 40 wt % of the first amount of the Al—Si alloy.

公开(公告)号：US11794285B2

公开(公告)日：2023-10-24

申请号：US17387278

申请日：2021-07-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Daniel J. Wilson ,  Qigui Wang ,  Liang Wang ,  Huaxin Li ,  Jason J. Coryell ,  Joshua L. Solomon

IPC: B23K26/70 ,  B23K26/24 ,  B23K103/10

CPC classification number: B23K26/702 ,  B23K26/24 ,  B23K2103/10

Abstract: The concepts described herein provide a method, system, and apparatus for joining, via welding, first and second members fabricated from an aluminum alloy including aluminum, zinc, and manganese, such as 7000-series aluminum alloys, and a resultant workpiece. A junction is formed by a first member being disposed contiguously to a second member. A welding machine generates a weld pool at the junction that includes liquified aluminum alloy. An ultrasonic transducer directs ultrasonic energy in proximity to the weld pool. In some embodiments, an electro-magnetic transducer directs electro-magnetic energy in proximity to the weld pool. The first member is fused to the second member at the junction upon solidification of the weld pool.

公开(公告)号：US20230330744A1

公开(公告)日：2023-10-19

申请号：US17719737

申请日：2022-04-13

Applicant: GM Global Technology Operations LLC

Inventor： Liang Wang ,  Qigui Wang ,  Dale A. Gerard ,  Steven L. Burkholder ,  Ronald C. Daul

IPC: B22D15/02 ,  B22C9/06 ,  B22C9/10 ,  B22C3/00 ,  B22C9/02

CPC classification number: B22D15/02 ,  B22C9/061 ,  B22C9/101 ,  B22C3/00 ,  B22C9/02

Abstract: A low-pressure sand-casting system includes a sand-casting mold receiving a molten casting material to cast an automobile vehicle cylinder head. A port is created in the automobile vehicle cylinder head. A manifold port metal core assembly includes a metal core. A compressible material coating is applied on the manifold port core metal core.

公开(公告)号：US11759849B1

公开(公告)日：2023-09-19

申请号：US17823238

申请日：2022-08-30

Applicant: GM Global Technology Operations LLC

Inventor： Liang Wang ,  Qigui Wang ,  Jianghuai Yang ,  Kiran Mistry ,  Oliver Patrick Jordan

IPC: B22C9/08 ,  B22D25/02 ,  C22C37/08 ,  C22C37/10 ,  F16C3/08

CPC classification number: B22C9/088 ,  B22D25/02 ,  C22C37/08 ,  C22C37/10 ,  F16C3/08 ,  B23P2700/07 ,  F16C2202/06 ,  F16C2202/08 ,  F16C2202/10 ,  F16C2204/66 ,  F16C2220/02 ,  F16C2240/02 ,  F16C2240/30 ,  F16C2240/48 ,  Y10T29/17 ,  Y10T29/49286

Abstract: A method and system for manufacturing a cast iron crankshaft for a vehicle are provided. The system comprises a molding unit arranged to form a negative sand cast mold of the cast iron crankshaft. The mold comprising at least one molded cavity having a pattern with dimensions of the cast iron crankshaft. The system further comprises a feeding mechanism comprising a riser having a connector through which molten metallic material flows to the cast mold. The feeding mechanism feeds the molten metallic material at a riser connection angle in the at least one mold cavity. The riser connection angle corresponds to a connector modulus. The connector modulus is 20% greater than a cast modulus. The riser geometry corresponds to a riser modulus. The riser modulus is 20% greater than the connector modulus. The system further comprises a furnace, a cooling area, a separation unit, a controller and a power source.

公开(公告)号：US11554413B2

公开(公告)日：2023-01-17

申请号：US17163926

申请日：2021-02-01

Applicant: GM Global Technology Operations LLC

Inventor： Ronald J. Petrus ,  Qigui Wang ,  Richard M. Nichols, III ,  Brian C. Leuenhagen

IPC: B22D15/02 ,  B22D15/04 ,  B22C9/10 ,  F02F1/00

Abstract: A system for making a hybrid cam bore sand core with metal chills for an engine block includes an engine block cast of an aluminum material. A camshaft bore extends through the engine block. A cam bore sand core with at least one metal chill is positioned within the camshaft bore. A body portion of the at least one metal chill is positioned in direct contact with a cam bearing surface of at least one cam bearing member during casting of the engine block to increase a cooling rate of the at least one cam bearing member and create a crystalline material depth of the cam bearing member having enhanced mechanical properties.

公开(公告)号：US20220325385A1

公开(公告)日：2022-10-13

申请号：US17224474

申请日：2021-04-07

Applicant: GM Global Technology Operations LLC

Inventor： Wenying Yang ,  Qigui Wang ,  Ming Liu

IPC: C22C21/02

Abstract: An enhanced aluminum alloy galvanically compatible with a magnesium alloy component is disclosed. The aluminum alloy comprises aluminum, less than 0.2 weight percent copper, less than 0.2 weight percent iron, 6.0 to 9.0 weight percent silicon, 0.6 to 1.5 weight percent magnesium, and greater than 0.8 weight percent manganese. The aluminum alloy further comprises less than 2 weight percent zinc, less than 0.1 weight percent nickel, less than 0.2 weight percent tin, less than 0.05 weight percent titanium; and 0.008 to 0.02 weight percent strontium. Manganese and iron have a weight ratio of at least 30:1. Furthermore, iron and manganese combined content is less than 2.0 weight percent.

公开(公告)号：US20220241847A1

公开(公告)日：2022-08-04

申请号：US17163718

申请日：2021-02-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tiruttani Munikamal ,  Bala Krishna Sela ,  Qigui Wang ,  Scott A. Kavanagh ,  Guy Celli ,  Lokesh Choudhary

IPC: B22C9/06 ,  B22C9/22

Abstract: A mold package for forming a cast device such as an engine block is described. The mold package includes a profiled chill and a mold core assembly that is disposed on the profiled chill. The mold core assembly defines a plurality of bulkheads of the engine block. The profiled chill includes a first chill portion having a second chill portion and a plurality of third chill portions arranged thereon, wherein the second chill portion is a semicylindrical element. The third chill portions are arranged to be adjacent to the plurality of bulkheads of the engine block.

公开(公告)号：US20220203469A1

公开(公告)日：2022-06-30

申请号：US17134957

申请日：2020-12-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B23G1/34 ,  B23G1/50

Abstract: A hybrid threading tool defines a longitudinal axis and includes a cutting portion with a plurality of cutting teeth. The plurality of cutting teeth are configured to cut a first threading into a workpiece. The hybrid threading tool also defines a forming portion that is attached to the cutting portion and that is arranged therewith along the longitudinal axis. The forming portion includes a plurality of forming teeth configured to plastically deform the first threading into a second threading for the workpiece.

公开(公告)号：US11326485B2

公开(公告)日：2022-05-10

申请号：US17014526

申请日：2020-09-08

Applicant: GM Global Technology Operations LLC

Inventor： Devin R. Hess ,  Qigui Wang ,  Thomas W. Gustafson ,  Dale A. Gerard

IPC: F01L3/22 ,  C23C2/12 ,  B22D19/00 ,  F02F1/24

Abstract: A cylinder head having a cast-in-place valve seat for an automobile vehicle includes a valve seat having an inner wall. At least one retaining feature integrally and homogeneously extends from the inner wall. The valve seat when positioned into a casting mold has the at least one retaining feature assisting in retaining the valve seat in the casting mold. A metal in a molten form is received in the casting mold. A cast component formed after cooling of the metal has the valve seat cast-in-place.

公开(公告)号：US11173568B2

公开(公告)日：2021-11-16

申请号：US16032880

申请日：2018-07-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: F16H55/06 ,  B23K20/12 ,  F16D3/79 ,  F16H55/17 ,  F16F15/30

Abstract: A composite metal flexplate is disclosed that includes an aluminum center plate and a steel ring gear joined to the aluminum center plate by a solid-state joint. The solid-state joint that joins together the aluminum center plate and the steel ring gear may be formed by friction welding. During the friction welding process, a surface of an annular body of the steel ring gear is preheated, followed by bringing the preheated surface of the annular body into contact with a surface of a periphery of a circular body of the aluminum center plate. The two contacting surfaces are then caused to experience relative rotational contacting movement, which generates frictional heat therebetween and softens adjacent regions of the steel ring gear and the aluminum center plate. Once this occurs, an applied force is administered to compress and forge the contacting surfaces together, thereby establishing the solid-state joint.