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公开(公告)号：US11707792B2
公开(公告)日：2023-07-25
申请号：US17034373
申请日：2020-09-28
Applicant: GM Global Technology Operations LLC
Inventor： Jason L. Austin , Dale A. Gerard
Abstract: A method to form a gear for motor vehicles includes one or more of the following: placing a blank between a first tool member and a second tool member, each of the first tool member and the second tool member having a set of teeth; and moving the first tool member and the second tool member towards the blank while rotating the first tool member and the second tool member to form a gear with a set of teeth from the blank. Each tooth of the set of teeth has a topography that varies tooth-to-tooth.
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公开(公告)号：US11618937B2
公开(公告)日：2023-04-04
申请号：US16657146
申请日：2019-10-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jianghuai Yang , Qigui Wang , Dale A. Gerard , James D. Cremonesi , Daniel J. Wilson
Abstract: A nodular iron alloy and automotive components, such as a crankshaft, are provided. The nodular iron alloy may include iron, about 2.2-3.2 wt % carbon, about 1.7-2.3 wt % silicon, about 0.2-0.6 wt % manganese, a maximum of 0.03 wt % phosphorus, a maximum of 0.02 wt % sulfur, about 0.2-0.6 wt % copper, about 0.1-0.4 wt % chromium, about 0.4-0.8 wt % nickel, about 0.15-0.45 wt % molybdenum, about 0.2-1.0 wt % cobalt, about 0.02-0.06 wt % magnesium, and a maximum of 0.002 wt % rare earth element(s). The nodular iron alloy may have a Young's modulus in the range of 175-195 GPa and an as-cast ultimate tensile strength in the range of 750-950 MPa. This alloy possesses favorable strength, stiffness and noise/vibration/harshness qualities, making it suitable in crankshaft applications. A method of forming the nodular iron alloy includes feeding a magnesium-based material into a molten iron alloy through a continuous system at a constant amount.
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23.发明授权公开(公告)号：US11473456B2
公开(公告)日：2022-10-18
申请号：US17021417
申请日：2020-09-15
Applicant: GM Global Technology Operations LLC
Inventor： Qigui Wang , Devin R. Hess , Jeffrey Harris , Herbert W. Doty , Dale A. Gerard
Abstract: A cylinder head valve seat of an automobile vehicle includes a valve seat having a valve seat surface integrally joined to an engagement end. The engagement end includes multiple materials extending through a cross section of the engagement end. The multiple materials include: a first material having a first thermal conductivity; and a second material having a second thermal conductivity higher than the thermal conductivity of the first material, wherein the first material transitions into the second material.
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24.发明申请公开(公告)号：US20210146479A1
公开(公告)日：2021-05-20
申请号：US16684055
申请日：2019-11-14
Applicant: GM Global Technology Operations LLC
Inventor： Huaxin Li , Liang Wang , Dale A. Gerard
Abstract: A method of joining two ferrous alloy component parts. The method includes hot metal casting a portion of a first ferrous alloy component part onto a first joining surface of a low carbon intermediate element; friction fitting a joining surface of a second ferrous alloy component part against a second joining surface of the low carbon intermediate element; and fusion welding with a concentrated energy source the intermediate element to the second ferrous alloy component part. The hot metal casting includes flowing a molten ferrous alloy onto the textured first joining surface, wherein the molten ally encompasses tabs extending from the first joining surface and filling apertures defined in the intermediate element. Then cooling the molten ferrous alloy such that a metallurgical and mechanical bond is formed between the portion of the first ferrous alloy component part and the first joining surface of the low carbon intermediate element.
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公开(公告)号：US12172210B2
公开(公告)日：2024-12-24
申请号：US18045947
申请日：2022-10-12
Applicant: GM Global Technology Operations LLC
Inventor： Qigui Wang , Liang Wang , Daniel J. Wilson , Dale A. Gerard , Devin R. Hess , Paul J. Boone
Abstract: A high pressure die casting (HPDC) system for casting ultra-large single-piece castings for vehicles. The HPDC system includes a clear feeding path from at least one ingate to a predetermined thicker section of a mold cavity, a last to solidify ingate having an equivalent or larger feeding modulus than the highest feeding modulus of the other ingates, and thermal management elements. The clear feeding path, last to solidify ingate, and thermal management elements ensure sufficient supplemental molten metal flow to the thicker portion of the mold cavity to accommodate for shrinkage of the thicker portion of an ultra large casting during the casting and solidification process.
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Patent Agency Ranking
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：US11794270B2
公开(公告)日：2023-10-24
申请号：US17307277
申请日：2021-05-04
Applicant: GM Global Technology Operations LLC
Inventor： Huaxin Li , MingFeng Shi , Jatinder Paul Singh , Dale A. Gerard
CPC classification number: B23K11/166 , B23K11/115 , B23K11/20 , B23K11/24 , B23K35/0255 , B23K35/3033 , C22C19/03 , B23K2103/04
Abstract: A system for increasing joint strength and reducing embrittlement in a resistance spot weld of metal workpieces is disclosed. The system comprises a stackup of first and second metal workpieces, and an interface member disposed between the first and second metal workpieces. The interface member comprises a peripheral wall defining a hollow inner portion. The peripheral wall has a first open end extending to a second open end. The first open end is in contact with the first metal workpiece defining a first weld portion thereon. The second open end is in contact with the second metal workpiece defining a second weld portion thereon. The system further comprises a first electrode configured to contact the first metal workpiece to heat the peripheral wall at the first weld portion and join the first metal workpiece with the first open end of the peripheral wall. The system further comprises a second electrode configured to contact the second metal workpiece to heat the peripheral wall at the second weld portion and join the second metal workpiece with the second open end of the peripheral wall to define a weld joint. The system further comprises a power source configured to power the first and second electrodes and a controller configured to control the power to the first and second electrodes to heat the peripheral wall.
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28.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：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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