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111.发明公开公开(公告)号：US20230416876A9
公开(公告)日：2023-12-28
申请号：US17529950
申请日：2021-11-18
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.
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公开(公告)号：US20230398600A1
公开(公告)日：2023-12-14
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
CPC classification number: F16C3/10 , B22D19/04 , B22D25/06 , B22C9/02 , F16C2204/60 , F16C2220/06 , F16C2360/22 , F16C2202/10 , F16C2202/06
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.
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公开(公告)号：US20230339052A1
公开(公告)日：2023-10-26
申请号：US17729603
申请日：2022-04-26
Applicant: GM Global Technology Operations LLC
Inventor： Daniel J. Wilson , Liang Wang , Qigui Wang , Devin R. Hess , Michelle A. Wood , Ali Shabbir , Ronald C. Daul , Dale A. Gerard , Gregory Melekian
IPC: B23P6/04
CPC classification number: B23P6/04
Abstract: A method of repairing an ultra-large single-piece cast component of a vehicle body. The method includes the steps of locating a damaged portion of the cast component, determining an extent of the damaged portion of the ultra-large cast component, defining a cut-line sectioning off the damaged portion from an undamaged portion of the ultra-large cast component, cutting along the cut-line to excise the damaged portion from the undamaged portion of the ultra-large cast component, and joining a replacement piece to the undamaged portion of the ultra-large cast component. The replacement piece is fabricated based on the original manufacturer’s geometry and dimensional data of the excised damaged portion. The undamaged portion of the ultra-large cast component remains on the vehicle body during the repair.
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公开(公告)号：US11767804B1
公开(公告)日：2023-09-26
申请号：US18161516
申请日：2023-01-30
Applicant: GM Global Technology Operations LLC
Inventor： Lokesh Choudhary , Qigui Wang , Brian D Kaminski , Gregory Melekian , Ronald C. Daul , Kurt T. Hilvers
CPC classification number: F02F1/18 , F02F7/0085
Abstract: An engine for a vehicle. The engine includes a cast engine block having a hybrid insert disposed in a fastener bore having rolled internal threads. The hybrid insert includes an internal surface having cut inner diameter (ID) threads and an external surface having rolled outer diameter (OD) threads. The rolled OD threads of the hybrid insert are received in the rolled internal threads of the fastener bore. The hybrid threaded insert may include a bi-metal in which the ID threads are formed of one metal alloy and the OD threads are formed of another metal alloy. Alternatively, the external surface of the hybrid insert may define locking features and the engine block is cast onto these locking features, thereby locking the hybrid insert to the engine block.
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115.发明公开公开(公告)号：US20230211406A1
公开(公告)日：2023-07-06
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
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.
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Patent Agency Ranking
公开(公告)号：US11654476B2
公开(公告)日：2023-05-23
申请号：US17034530
申请日：2020-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lokesh Choudhary , Tiruttani Munikamal , Qigui Wang , Liang Wang
Abstract: A hybrid core for manufacturing a cast component, the hybrid core including a sand core portion having an exterior shape configured to define an interior feature of the cast component. The hybrid core also includes a metal chill element embedded within the sand core portion. The metal chill element is configured to locally absorb heat energy from the cast component during cooling of the cast component and solidification thereof. The metal chill element is constructed and arranged within the sand core portion to be removed during shake out from the cast component subsequent to the solidification thereof. A system and a method for manufacturing a cast component using such a hybrid core are also envisioned.
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117.发明申请公开(公告)号：US20230070074A1
公开(公告)日：2023-03-09
申请号：US17462527
申请日：2021-08-31
Applicant: GM Global Technology Operations LLC
Inventor： Jianghuai Yang , Dale A. Gerard , Qigui Wang
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.
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公开(公告)号：US11577331B2
公开(公告)日：2023-02-14
申请号：US17134986
申请日：2020-12-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lokesh Choudhary , Qigui Wang , Tiruttani Munikamal , David A. Wulbrecht , Gregory Melekian , Anil K. Sachdev
Abstract: A method of manufacturing a threaded hole in a workpiece includes providing the workpiece having a region with a hole. The method also includes cutting a threading for the hole. Furthermore, the method includes, independent of cutting the threading, densifying the region proximate the hole to reduce material porosity in the region.
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公开(公告)号：US11548060B2
公开(公告)日：2023-01-10
申请号：US17024919
申请日：2020-09-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dale A. Gerard , Qigui Wang , Tyson W. Brown , Ali Shabbir , Anil K. Sachdev
Abstract: A high heat-absorption casting core for manufacturing a cast component includes a core body. The core body has at least a portion thereof defined by metal powder. The metal powder is configured to absorb heat energy from the cast component during cooling of the component and solidification thereof. The core body may be additionally defined by a sand fraction in contact with the metal powder fraction. A system and a method for manufacturing a cast component using the high heat-absorption casting core are also envisioned.
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公开(公告)号：US11447850B2
公开(公告)日：2022-09-20
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
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.
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