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31.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：US10850352B2
公开(公告)日：2020-12-01
申请号：US15849784
申请日：2017-12-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： John M Kremer , Huaxin Li
IPC: B23K26/364 , B23K26/38 , F16D65/12 , F16D13/64 , F16D65/02 , B23K103/16 , F16D13/72 , F16D13/74 , F16D69/00 , F16D69/04
Abstract: A friction clutch assembly for an automatic transmission, a friction clutch plate, and a method of forming a friction clutch plate are provided. The method includes providing a friction material layer for a face of the friction clutch plate and cutting the friction material layer with a laser beam to form a plurality of grooves within the friction material layer. In one version, a friction plate for the friction clutch assembly includes an annular core plate having first and second opposed faces and defining an outer edge and an inner edge. Friction material is affixed to at least one of the first and second opposed faces. The friction material defines a plurality of grooves within the friction material, each groove being bordered by friction material having a ridge. The cross-section of the ridge has a corner having a radius of curvature that is less than 300 microns.
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公开(公告)号：US10407761B2
公开(公告)日：2019-09-10
申请号：US15343286
申请日：2016-11-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Huaxin Li , Dale A Gerard , Martin S Kramer
Abstract: An engine block and a method of coating an inner surface of an engine cylinder bore of an engine cylinder are provided. The method includes attaching a strengthening layer or ring onto an upper portion of the inner surface of the cylinder bore. The strengthening layer or ring may be attached by laser cladding. The method also includes depositing a thermal spray coating onto the inner surface of the cylinder bore and the strengthening layer or ring.
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公开(公告)号：US20190126386A1
公开(公告)日：2019-05-02
申请号：US15797147
申请日：2017-10-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Huaxin Li , Daniel J Wilson
IPC: B23K20/227 , B23K20/12 , C23C30/00
Abstract: A method for welding a first component to a second component includes providing a first component of a first alloy and having coating of a second alloy on a face of the first component, and solid state welding a second component of a third alloy to the coating of the first component. The second alloy includes only non-ferrous compounds.
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公开(公告)号：US20180372146A1
公开(公告)日：2018-12-27
申请号：US15632722
申请日：2017-06-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Huaxin Li , Daniel J Wilson
Abstract: A fine grain steel alloy and automotive components produced therefrom are provided. The fine grain steel alloy includes iron, about 0.20 to about 0.60 weight percent carbon, about 1.80 to about 2.50 weight percent manganese, about 0.20 to about 1.20 weight percent silicon, and about 0.10 to about 0.25 weight percent of a transition metal, where the transition metal is vanadium, niobium, or a combination of vanadium and niobium. The fine grain steel alloy may also include about 0.60 to about 1.50 weight percent chromium, about 0.01 to about 0.20 weight percent aluminum, and about 0.01 to about 0.20 weight percent titanium.
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Patent Agency Ranking
公开(公告)号：US20180248439A1
公开(公告)日：2018-08-30
申请号：US15442745
申请日：2017-02-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Arthur L. McGrew, JR. , Huaxin Li , John S. Agapiou
Abstract: An electric motor includes a stator assembly and a rotor configured to rotate within the stator assembly about an axis. The stator assembly includes a stator case having a channel and a laminate steel core having a retention feature aligned with the channel of the stator case. The stator case is fixed to the laminate steel core via displacement of material of the stator case at the channel toward the laminate steel core to capture the retention feature. An electro-mechanical drive-unit employing the above-described electric motor and a method of generating a stator assembly for such an electric motor are also contemplated.
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公开(公告)号：US20170283899A1
公开(公告)日：2017-10-05
申请号：US15398155
申请日：2017-01-04
Applicant: GM Global Technology Operations LLC
Inventor： Huaxin Li , Shekhar G. Wakade
CPC classification number: C21D9/32 , C21D1/20 , C21D1/613 , C21D6/00 , C21D9/30 , C23C8/22 , C23C8/32 , C23C8/80
Abstract: A novel combination of heat treatment steps includes the steps of carburizing a component fabricated of a medium carbon alloy steel at an elevated temperature for between three and six hours, subjecting the component to an austempering bath and holding it there for between fifteen and two hundred forty minutes and finally cooling the component to room temperature to allow martensitic transformation. These steps may be followed with cryogenic treatment to reduce retained austenite if needed. The process produces components with low distortion, high surface hardness, from HRC 56 to 62, and high surface compressive residual stress.
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公开(公告)号：US20170130307A1
公开(公告)日：2017-05-11
申请号：US14934225
申请日：2015-11-06
Applicant: GM Global Technology Operations LLC
Inventor： Huaxin Li , Martin S. Kramer , Jianghuai Yang , Ronald Sanders
IPC: C22C38/58 , C23C4/073 , C22C38/50 , C22C38/44 , C22C38/38 , F02F7/00 , C22C38/22 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , F02F1/00 , C23C4/134 , C22C38/28
CPC classification number: C22C38/58 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/38 , C22C38/44 , C22C38/50 , C23C4/06 , C23C4/073 , C23C4/131 , C23C4/134 , C23C4/18 , F02F1/004 , F02F1/18 , F02F7/0007 , F02F7/0085
Abstract: An iron-based alloy for use in a plasma transferred wire arc thermal spray apparatus includes a high sulfur steel alloy in a stainless and non-stainless forms including a high aluminum and high titanium content. The alloy has significant improvements in the elimination of spray coating cracking, reduction of machining cost, and improved lubrication performance.
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公开(公告)号：US09528557B1
公开(公告)日：2016-12-27
申请号：US14837075
申请日：2015-08-27
Applicant: GM Global Technology Operations LLC
Inventor： Scott William Heitzenrater , Huaxin Li
CPC classification number: F16D13/683 , F16D25/0638 , F16D47/00 , F16H1/46
Abstract: A clutch housing for an automatic transmission includes an aluminum hub and a drum portion which is laser or friction welded to the hub. Due to the different strength requirements of the hub and drum, the hub is fabricated of 6082-T6 aluminum or a material of similar strength and malleability and is forged or die cast. The hub includes male splines or gear teeth disposed on its periphery. The cylindrical drum is fabricated of 7075-T6 aluminum or a material of similar or greater strength and similar malleability and is roller died or stamped and includes female splines or gear teeth on its inner surface as well as a plurality of radially oriented lubrication openings or slots which facilitate flow of lubricating fluid from the interior to the exterior of the cylindrical drum.
Abstract translation: 用于自动变速器的离合器壳体包括铝轮毂和激光或摩擦焊接到轮毂的鼓部分。 由于轮毂和滚筒的强度要求不同，轮毂由6082-T6铝制成，或具有相似强度和延展性的材料，并被锻造或压铸。 轮毂包括设置在其周边上的外花键或齿轮齿。 圆柱形滚筒由7075-T6铝制成，或具有类似或更大强度和类似延展性的材料，并且滚轮死亡或冲压，并且在其内表面上包括内花键或齿轮齿以及多个径向定向的润滑开口或槽 这促进了润滑流体从圆筒的内部到外部的流动。
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公开(公告)号：US20250153275A1
公开(公告)日：2025-05-15
申请号：US18505600
申请日：2023-11-09
Applicant: GM Global Technology Operations LLC
Inventor： Huaxin Li , Pankaj Kumar Jha , Kaushik Kalita , Yi Liu , Qigui Wang , Lala Ram Patel , Masoud MohammadPour
Abstract: Systems, methods, and assemblies for forming or employing closed-loop laser-welds are described. Closed-loop laser-welds may be formed by, for example, actuating a laser on a substrate at a first point to initiate a weld and scanning the laser along a starting weld path, along a main weld path, and along an ending weld path. The starting weld path is from the first point to a second point. The main weld path is from the second point to a third point. The ending weld path is from the third point to a fourth point. The laser is scanned from the second point to the third point such that a bead of the main weld path defines an inner perimeter and an outer perimeter. The outer perimeter defines a closed-loop laser weld. The first point and the fourth points are within the inner perimeter.
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