公开(公告)号：US20220074325A1

公开(公告)日：2022-03-10

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

IPC: F01L3/22 ,  F02F1/24 ,  B22D19/00 ,  C23C2/12

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.

公开(公告)号：US20180347011A1

公开(公告)日：2018-12-06

申请号：US15609155

申请日：2017-05-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Herbert W. Doty ,  Devin R. Hess ,  Qigui Wang

IPC: C22C1/02 ,  B22D21/00

Abstract: A system for casting an aluminum alloy includes a first chamber for containing a first melt at a first temperature, a second chamber for containing second melt at a second temperature that is lower than the first temperature, a mixing chamber in communication with the first chamber and the second chamber for simultaneously receiving and mixing the first melt from the first chamber with the second melt from the second chamber, and a mold chamber in communication with the mixing chamber and for receiving the mixed melt.

公开(公告)号：US09500594B2

公开(公告)日：2016-11-22

申请号：US14070609

申请日：2013-11-04

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  James W. Knight ,  Devin R. Hess

IPC: G06K9/00 ,  G01N21/84 ,  G06T7/40

CPC classification number: G01N21/84 ,  G06T7/41 ,  G06T2207/10056 ,  G06T2207/30116

Abstract: A method to automatically quantify dendrite arm spacing in dendritic microstructures. Once a location of interest in a cast material specimen has been identified, the information contained in it is automatically analyzed to quantify dendrite cell size information that is subsequently converted into a quantified dendrite arm spacing through an empirical relationship or a theoretical relationship. In one form, the relationship between DCS and DAS is such that the DAS in dendritic structure of cast aluminum alloys may be automatically determined from the measurement of one or more of dendrite cell size and the actual volume fraction of the eutectic phases in the local casting microstructure. Non-equilibrium conditions may be accounted for in situations where a theoretical volume fraction of a eutectic phase of the alloy in equilibrium condition is appropriately modified. Thus, in situations where equilibrium conditions—such as those where the casting is cooled very slowly during solidification—does not apply (such as during rapid cooling and consequent solidification), the eutectic measured in the non-equilibrium condition, which can be smaller than the theoretical value in equilibrium, can be accounted for.

公开(公告)号：US20140119612A1

公开(公告)日：2014-05-01

申请号：US14070609

申请日：2013-11-04

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  James W. Knight ,  Devin R. Hess

IPC: G01N21/84

CPC classification number: G01N21/84 ,  G06T7/41 ,  G06T2207/10056 ,  G06T2207/30116

Abstract: A method to automatically quantify dendrite arm spacing in dendritic microstructures. Once a location of interest in a cast material specimen has been identified, the information contained in it is automatically analyzed to quantify dendrite cell size information that is subsequently converted into a quantified dendrite arm spacing through an empirical relationship or a theoretical relationship. In one form, the relationship between DCS and DAS is such that the DAS in dendritic structure of cast aluminum alloys may be automatically determined from the measurement of one or more of dendrite cell size and the actual volume fraction of the eutectic phases in the local casting microstructure. Non-equilibrium conditions may be accounted for in situations where a theoretical volume fraction of a eutectic phase of the alloy in equilibrium condition is appropriately modified. Thus, in situations where equilibrium conditions—such as those where the casting is cooled very slowly during solidification—does not apply (such as during rapid cooling and consequent solidification), the eutectic measured in the non-equilibrium condition, which can be smaller than the theoretical value in equilibrium, can be accounted for.

Abstract translation: 树枝状微结构中树突臂间距自动量化的方法。 一旦已经识别出铸造材料样品中感兴趣的位置，则自动分析其中包含的信息以量化树突状细胞尺寸信息，随后通过经验关系或理论关系将信号转化为量化枝晶臂间距。 在一种形式中，DCS和DAS之间的关系使得铸铝合金树枝状结构中的DAS可以通过测量本地铸造中的共晶相的枝晶晶粒尺寸和实际体积分数中的一种或多种来自动确定 微观结构。 在平衡条件下合金的共晶相的理论体积分数适当改变的情况下，可以考虑非平衡条件。 因此，在平衡条件（例如铸造在凝固期间非常缓慢地冷却的条件）的情况下不适用（例如在快速冷却和随后的凝固期间），在非平衡条件下测量的共晶体可以小于 平衡的理论价值，可以解释。

公开(公告)号：US12276010B2

公开(公告)日：2025-04-15

申请号：US18064980

申请日：2022-12-13

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Liang Wang ,  Daniel J. Wilson ,  Dale A. Gerard ,  Devin R. Hess ,  Paul Boone

IPC: C22C21/02 ,  B22D17/00 ,  B22D21/00 ,  C22F1/043

Abstract: An aluminum alloy for high pressure die casting of ultra-large vehicle body structures. The aluminum alloy includes about 4.00 to about 12.00 weight percent silicon (Si); about 0.20 weight percent maximum (Max) copper (Cu); about 0.40 weight percent Max magnesium (Mg); about 0.20 to about 0.60 weight percent iron (Fe); about 1.00 weight percent Max manganese (Mn); about 0.50 weight percent Max zinc (Zn); about 0.02 weight percent Max strontium (Sr); about 0.50 weight percent Max cerium (Ce); about 0.01 weight Max percent boron (B); and a remaining weight percent aluminum (Al). The aluminum alloy provides an as-cast yield strength of greater than 130 Megapascals (MPa), ultimate tensile strength of greater than 260 MPa, and elongation of greater than 6% without the need for heat treatment.

公开(公告)号：US12241431B1

公开(公告)日：2025-03-04

申请号：US18586986

申请日：2024-02-26

Applicant: GM Global Technology Operations LLC

Inventor： Yi Liu ,  Qigui Wang ,  Richard L. Metcalf ,  Angela Zsidi Alksninis ,  Devin R. Hess ,  Purushotham Kunduru ,  Cherng-chi Chang

IPC: F02F7/00 ,  B23K26/352 ,  C21D1/09 ,  B23K101/00 ,  B23K103/06 ,  F02F1/00

Abstract: An engine block for a vehicle includes a bore surface defining a cylinder bore. The bore surface exhibits a first microstructure and includes a pattern of a plurality of cycloidal features formed in the bore surface. The plurality of cycloidal features each exhibit a first length in a first axis and a second length in a second axis arranged 90 degrees from the first axis. The plurality of cycloidal features also exhibit a ratio of the first length to the second length in a range of 1:1.5 to 1.5:1. The plurality of cycloidal features further exhibit a second microstructure including tempered martensite, wherein the second microstructure is different from the first microstructure. The engine block is included in a vehicle. The cycloidal features are formed with a laser.

公开(公告)号：US20230356293A1

公开(公告)日：2023-11-09

申请号：US17735337

申请日：2022-05-03

Applicant: GM Global Technology Operations LLC

Inventor： Daniel J. Wilson ,  Liang Wang ,  Qigui Wang ,  Devin R. Hess ,  Michelle A. Wood ,  Ronald C. Daul ,  Ali Shabbir

IPC: B22D17/22 ,  B22C9/22

CPC classification number: B22D17/229 ,  B22C9/22

Abstract: A design for repair casting having a repairable ultra-large single-piece casting and a replacement part. The ultra-large single-piece casting includes a main body portion, at least one predefined replaceable portion integrally cast with the main body portion, and a cut-guide delineating the predefined replaceable portion from the main body portion. The cut-guide includes a continuous channel defined on an exterior surface of the single-piece casting. The cut-guide further includes a rib extending from a channel wall on the main body portion. A damaged replaceable portion is excisable from the main-body portion by cutting through the single-piece casting along the cut-guide. The excised damaged replaceable portion may be replaced with the replacement part, which has substantially the same geometry, dimensions, and mechanical properties as an undamaged replaceable portion. The replacement part may be joined to the main body portion by mechanical means or by welding.

公开(公告)号：US20220082035A1

公开(公告)日：2022-03-17

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

IPC: F01L3/04 ,  F02F1/24 ,  B33Y80/00

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.

公开(公告)号：US09981310B2

公开(公告)日：2018-05-29

申请号：US14841752

申请日：2015-09-01

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Devin R. Hess ,  Jason R. Traub ,  Christopher D. Cogan ,  Andrew J. Genualdi

IPC: B22D27/08 ,  B22D1/00 ,  B22D21/04 ,  B22D35/04 ,  B22D41/00 ,  B22D25/02 ,  C22B21/06 ,  C22B9/02

CPC classification number: B22D27/08 ,  B22D1/007 ,  B22D21/04 ,  B22D25/02 ,  B22D35/04 ,  B22D41/00 ,  C22B9/026 ,  C22B21/06 ,  Y02P10/234

Abstract: A degassing and grain refinement system for a cast aluminum-based component and a method of achieving both hydrogen gas presence reduction and grain size reduction in a cast aluminum-based component. Ultrasonic vibrations are imparted to both the liquid metal travel path from its source to the mold to achieve the reduction in hydrogen gas in the molten metal, as well as to one or more locations within the mold to achieve relatively small and equiaxed grains in the component upon solidification.

公开(公告)号：US20170056971A1

公开(公告)日：2017-03-02

申请号：US14841752

申请日：2015-09-01

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Devin R. Hess ,  Jason R. Traub ,  Christopher D. Cogan ,  Andrew J. Genualdi

IPC: B22D27/08 ,  B22D25/02 ,  B22D35/04 ,  B22D41/00 ,  B22D1/00 ,  B22D21/04

CPC classification number: B22D27/08 ,  B22D1/007 ,  B22D21/04 ,  B22D25/02 ,  B22D35/04 ,  B22D41/00 ,  C22B9/026 ,  C22B21/06 ,  Y02P10/234

Abstract: A degassing and grain refinement system for a cast aluminum-based component and a method of achieving both hydrogen gas presence reduction and grain size reduction in a cast aluminum-based component. Ultrasonic vibrations are imparted to both the liquid metal travel path from its source to the mold to achieve the reduction in hydrogen gas in the molten metal, as well as to one or more locations within the mold to achieve relatively small and equiaxed grains in the component upon solidification.

Abstract translation: 用于铸铝基组分的脱气和晶粒细化系统以及在铸铝基组分中实现氢气存在还原和晶粒尺寸减小的方法。 超声波振动被赋予从其源到模具的液态金属行进路径，以实现熔融金属中的氢气的还原，以及模具内的一个或多个位置，以实现组件中的相对小的等轴晶粒 凝固后。