公开(公告)号：US11905584B2

公开(公告)日：2024-02-20

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 ,  B21D37/01 ,  B21D37/18 ,  B21D37/16 ,  F16C3/00

CPC classification number: C22F1/047 ,  B21D37/01 ,  B21D37/16 ,  B21D37/18 ,  C22C21/08 ,  F16C3/00

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：US11890668B2

公开(公告)日：2024-02-06

申请号：US17839680

申请日：2022-06-14

Applicant: GM Global Technology Operations LLC

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

IPC: B22D25/02 ,  B22C9/02 ,  B22D19/04 ,  B22D25/06

CPC classification number: B22C9/02 ,  B22D19/04 ,  B22D25/06 ,  B23P2700/07 ,  F16C2202/06 ,  F16C2202/10 ,  F16C2204/60 ,  F16C2220/06 ,  Y10T29/17 ,  Y10T29/49286

Abstract: Systems and methods of making a cast steel alloy crankshaft for an internal combustion engine are provided. The method comprises providing a mold of the crankshaft. The mold has cavities to form the crankshaft. The method further comprises melting a first metallic material at between 1400 degrees Celsius (° C.) and 1600° C. to define a molten metallic material. In addition, the method further comprises feeding the molten metallic material at a riser connection angle of between 30° and 75° in the cavities of the negative sand cast mold. The method further comprises cooling the molten metallic material at a solidification time of between 5 seconds (sec) and 20 sec in the negative sand cast mold with at least one chill member to define a solidified metallic material having dimensions of the cast steel alloy crankshaft. Furthermore, the method comprises separating the solidified metallic material from the negative sand cast mold to define the cast steel alloy crankshaft.

公开(公告)号：US11879168B2

公开(公告)日：2024-01-23

申请号：US17462527

申请日：2021-08-31

Applicant: GM Global Technology Operations LLC

Inventor： Jianghuai Yang ,  Dale A. Gerard ,  Qigui Wang

IPC: C22C37/10 ,  F02F1/00 ,  C22C37/08

CPC classification number: C22C37/10 ,  C22C37/08 ,  F02F1/004

Abstract: A high elastic modulus, high ultimate tensile strength, and low alloy gray cast iron for cylinder liners. The gray cast iron includes from 2.60 wt % to 3.30 wt % Carbon (C); from 1.50 wt % to 2.30 wt % Silicon (Si); from 0.30 wt % to 0.80 wt % Manganese (Mn); from 0.15 wt % to 0.35 wt % Phosphorus (P); from 0.05 wt % to 0.11 wt % Sulphur (S); from 0.60 wt % to 1.20 wt % Copper (Cu); from 0.10 wt % to 0.30 wt % Chromium (Cr); from greater than 0.0 wt % to 0.1 wt % Nickle (Ni); from 0.15 wt % to 0.40 wt % Molybdenum (Mo); and balance wt % Iron (Fe). The total wt % of Si, Mn, P, S, Cu, Cr, Ni, and Mo is less than about 4.10 wt %. The gray cast iron has a Carbon Equivalent (CE) from 3.00 wt % to 3.90 wt % and the product of Mn %*S % is from 0.025 to 0.045.

公开(公告)号：US11872632B1

公开(公告)日：2024-01-16

申请号：US18146645

申请日：2022-12-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald C Daul ,  Qigui Wang ,  Ali Shabbir ,  Yucong Wang ,  Andrew J Buckland

IPC: B22F9/06 ,  B01J8/00 ,  B33Y70/00 ,  B22F1/17 ,  B22F9/08

CPC classification number: B22F9/06 ,  B01J8/0075 ,  B22F1/17 ,  B33Y70/00 ,  B22F2009/0836 ,  B22F2202/06 ,  B22F2999/00

Abstract: Systems and methods are provided for producing powders. The system includes a housing having an enclosure, a crucible configured to produce a melt of a first material, a droplet device configured to receive the melt of the first material from the crucible and produce a flow of droplets of the melt of the first material within the enclosure of the housing, wherein the droplets solidify within the enclosure, and a distribution device configured to propel a second material into the flow of droplets of the first material within the enclosure such that the second material is mixed with the droplets of the first material to produce the powder that includes the first material, the second material, and/or a reaction product thereof.

公开(公告)号：US11766716B2

公开(公告)日：2023-09-26

申请号：US17568047

申请日：2022-01-04

Applicant: GM Global Technology Operations LLC

Inventor： Steven L. Burkholder ,  Thomas W. Gustafson ,  Qigui Wang ,  Anil K. Sachdev

IPC: B22D27/04 ,  B22D30/00

CPC classification number: B22D27/04 ,  B22D30/00

Abstract: A system and method of increasing a cooling rate of a metal sand casting during solidification. The system includes a 3-D printed manufactured sand mold defining a mold cavity, a coolant inlet port extending into the manufactured sand mold, a myriad of coolant passageways surrounding a portion of the mold cavity, and a coolant outlet port in fluid communication with the coolant passageways. The system further includes a coolant vapor extraction system having a collection manifold in fluid connection with the outlet port of the sand mold. A molten metal is poured into the mold cavity and a liquid coolant is introduced into the sand mold. The liquid coolant changes state into a gas phase as it permeates through the sand mold, thereby increasing the cooling rate of the casting. The liquid coolant may be that of a liquid nitrogen.

公开(公告)号：US20230183842A1

公开(公告)日：2023-06-15

申请号：US17546363

申请日：2021-12-09

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Lokesh Choudhary

IPC: C22C23/00 ,  F16H57/032

CPC classification number: C22C23/00 ,  F16H57/032

Abstract: A magnesium (Mg) alloy housing for a drive unit of an electric vehicle (EV) having a drive shaft connected to an electric motor is provided. The Mg alloy housing comprises a body comprising Mg alloy. The body is arranged to house the drive unit of the EV. The housing further comprises a cylindrical hub disposed on the body. The hub has a bore formed therethrough and arranged to couple the drive shaft of the electric motor to the drive unit. The hub comprises a Mg portion having an inner surface. The hub further comprises an aluminum (Al) insert having an outerface. The Al insert is arranged to be disposed on the Mg portion such that the inner surface is aligned with the outerface defining a weld interface. The Al insert comprises iron (Fe) and Manganese (Mn) and having a Fe/Mn weight ratio of between 1:20 and 1:30.

公开(公告)号：US20230145566A1

公开(公告)日：2023-05-11

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：US20230059113A1

公开(公告)日：2023-02-23

申请号：US17407884

申请日：2021-08-20

Applicant: GM Global Technology Operations LLC

Inventor： Jianghuai Yang ,  Qigui Wang ,  Anil K. Sachdev

IPC: B22D29/04 ,  C22C38/44 ,  C22C38/42 ,  C22C38/50 ,  C22C38/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/00

Abstract: A cast steel alloy for an engine of a vehicle is provided. The cast steel alloy comprises 0.29 to 0.65 weight percent (wt %) carbon, 0.40 to 0.80 wt % silicon, 0.6 to 1.5 wt % manganese, up to 0.03 wt % phosphorus, 0.04 to 0.07 wt % sulfur, 0.8 to 1.4 wt % chromium, 0.2 to 0.6 wt % nickel, 0.15 to 0.55 wt % molybdenum, 0.25 to 2.0 wt % copper, up to 0.03 wt % titanium, 0.07 to 0.17 wt % vanadium, 0.02 to 0.06 wt % aluminum, up to 0.03 wt % nitrogen (N), and 0.01 to 0.06 wt % of at least one of cerium (Ce) and lanthanum. The cast steel alloy has unexpected and unconventional results such as reduced ferrite and enhanced strengths.

公开(公告)号：US20220355232A1

公开(公告)日：2022-11-10

申请号：US17307290

申请日：2021-05-04

Applicant: GM Global Technology Operations LLC

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

IPC: B01D39/20 ,  B22D11/119 ,  C04B38/00 ,  B28B1/00

Abstract: A ceramic foam filter system includes a filter body having multiple tortuous path channels through the filter body to filter a molten liquid. A filter holder configuration defining a canister in a runner passage receives the filter body. An upstream end of the filter body receives the molten liquid having multiple inclusions. A predominant portion of the inclusions are larger than the multiple tortuous path channels and are trapped against the upstream end of the filter body. The multiple tortuous path channels are sized to trap a predominant portion of multiple oxides within the molten liquid as trapped oxides within the filter body. A filtered molten material having the multiple inclusions and the multiple oxides removed is directed from the multiple tortuous path channels as a discharge flow to exit at a downstream end of the filter body.

公开(公告)号：US11465221B2

公开(公告)日：2022-10-11

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: B23G5/20 ,  B23G5/06 ,  B23G7/02 ,  B23G5/04 ,  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.