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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
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.
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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
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.
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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
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.
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公开(公告)号：US20210115540A1
公开(公告)日：2021-04-22
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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公开(公告)号：US20200048727A1
公开(公告)日：2020-02-13
申请号：US16056990
申请日：2018-08-07
Applicant: GM Global Technology Operations LLC
Inventor： Jianghuai Yang , James D. Cremonesi , Paul J. Gelazin , Qigui Wang , Daniel J. Wilson
Abstract: A method for manufacturing a crankshaft for an internal combustion engine with a plurality of journals having a hardened case with a first microstructure. The crankshaft is comprised of a steel comprising between about 0.3 wt % and 0.77 wt % Carbon. The first microstructure of the hardened case of the journals comprises between about 15% and 30% ferrite and a balance of martensite and the resultant subsurface residual stress between 310 MPa and 620 MPa.
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Patent Agency Ranking
公开(公告)号：US20200016688A1
公开(公告)日：2020-01-16
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
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.
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公开(公告)号：US10344358B2
公开(公告)日：2019-07-09
申请号：US14547308
申请日：2014-11-19
Applicant: GM Global Technology Operations LLC
Inventor： Qigui Wang , Bing Li , Cherng-Chi Chang , Wenying Yang , Michael J. McCreedy
Abstract: A method, device and article of manufacture for determining properties in a high pressure die cast component. Upon receipt of geometric information that corresponds to a location of interest within the component, a ray-triangle intersection relationship is used to calculate a wall thickness of the location of interest; this relationship is simplified by being used in conjunction with an octree-based relationship. One or more calculations are performed to determine a skin thickness based on the calculated wall thickness, and the skin thickness calculations are based on at least one of a logarithmic relationship, a polynomial relationship and a power law relationship. Changes in component shape or size may be taken into consideration to adjust the remaining skin layer thickness, such as that when the as-cast component is exposed to subsequent machining or related post-casting operations. From this, the properties are mapped to allow node-by-node variations in mechanical properties based on whether the node resides in the component skin region or core region.
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公开(公告)号：US10335851B2
公开(公告)日：2019-07-02
申请号：US15494774
申请日：2017-04-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jianghuai Yang , Qigui Wang , Daniel J Wilson , James D Cremonesi
Abstract: A sand casting apparatus, a method of forming a sand casting apparatus, and an automotive component are provided. The sand casting apparatus includes a sand casting base including a sand mold and/or a sand core having a base sand mixture, where the base sand mixture includes a sand material and a binder material. The sand casting apparatus further includes an outer layer disposed on the sand casting base. The outer layer includes silicon, magnesium, calcium, zirconium, manganese, carbon, aluminum, and iron. The automotive component has portions defining an aperture therein. The automotive component is formed of cast iron and has a nodular graphite structure from interior matrix to surface, where the nodular graphite structure on the surface is formed by a sand core having an outer layer that has reacted with the cast iron automotive component to form the nodular graphite structured surface.
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公开(公告)号：US20190151983A1
公开(公告)日：2019-05-23
申请号：US15817605
申请日：2017-11-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Huaxin Li , Qigui Wang , Daniel J. Wilson
IPC: B23K20/24 , B23K20/10 , B23K35/28 , B23K26/362
Abstract: A method for simultaneous ultrasonic welding/brazing of a first metallic alloy workpiece over a second metallic alloy workpiece includes creating depressions in a joining surface of a first metallic alloy workpiece, and applying a coating material to at least one of the joining surface of the first metallic alloy workpiece or a joining surface of a second metallic alloy workpiece. Next, contaminates are removed from the joining surfaces of the first metallic alloy workpiece and the second metallic alloy workpiece, and the workpieces are joined using ultrasonic vibration to create a welded and brazed joint.
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公开(公告)号：US20190032594A1
公开(公告)日：2019-01-31
申请号：US15660154
申请日：2017-07-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Qigui Wang , Marie-christine Jones , Yucong Wang
CPC classification number: F02F1/004 , C21D1/18 , C21D5/00 , C22F1/002 , C22F1/04 , C22F1/06 , F02F7/0085 , F02F2001/008 , F02F2200/06 , F05C2251/046
Abstract: A method and system for processing an engine block that includes a cylinder liner. The engine block having a first material with different coefficient of thermal expansion than a second material forming the cylinder liner. The method includes providing an insulating barrier to the cylinder liner, and quenching the engine block. The insulating barrier provides a lower cooling rate to the second material forming the cylinder liner than a cooling rate for the first material forming the engine block during the quenching.
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