公开(公告)号：US11890672B1

公开(公告)日：2024-02-06

申请号：US18161443

申请日：2023-01-30

Applicant: GM Global Technology Operations LLC

Inventor： Zhe Li ,  Qigui Wang ,  Wenying Yang ,  Daniel J. Wilson ,  Huaxin Li

IPC: B22D17/00 ,  B22D21/00 ,  B22D27/02 ,  B22D17/02

CPC classification number: B22D17/02 ,  B22D21/007 ,  B22D27/02

Abstract: A method of making a die cast part having high wear resistance is provided. The method comprises providing a mold and an insert pin. The mold comprises an interior surface defining a cavity. The mold comprises a bore formed through the interior surface. The insert pin has a magnetic core having a magnetic field and a barrier disposed about the magnetic core. The insert pin is disposed in the bore and extends into the cavity. The method comprises filling the mold with metallic material such that the metallic material is in contact with the insert pin to define a contact layer. The method comprises modifying iron content within the contact layer with the magnetic field to define an outer layer and an inner layer formed between the outer layer and the insert pin. The inner layer has 3-5 wt % Fe and the outer layer has 0.01-0.5 wt % Fe.

公开(公告)号：US11834732B2

公开(公告)日：2023-12-05

申请号：US17529950

申请日：2021-11-18

Applicant: GM Global Technology Operations LLC ,  Shanghai Jiao Tong University

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.

公开(公告)号：US11614158B2

公开(公告)日：2023-03-28

申请号：US16927172

申请日：2020-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert Parrish ,  Wenying Yang ,  Zhe Li ,  Abir R. Das ,  Chad M. Huls ,  Anil K. Sachdev

IPC: F16H57/04 ,  F04C2/08 ,  F04C2/10 ,  F04C14/18

Abstract: A hydraulic gerotor pump for an automatic transmission may comprise a housing and a gear set rotatably disposed within the housing. The gear set may comprise an inner gear and an outer gear having radially opposed intermeshing teeth that together define a plurality of circumferentially disposed variable volume pumping chambers therebetween. The housing may be made of a first aluminum-based material, and the inner gear and the outer gear of the gear set may be made of a second aluminum-based material. The linear coefficient of thermal expansion of the first aluminum-based material may be substantially the same as that of the second aluminum-based material.

公开(公告)号：US20220325385A1

公开(公告)日：2022-10-13

申请号：US17224474

申请日：2021-04-07

Applicant: GM Global Technology Operations LLC

Inventor： Wenying Yang ,  Qigui Wang ,  Ming Liu

IPC: C22C21/02

Abstract: An enhanced aluminum alloy galvanically compatible with a magnesium alloy component is disclosed. The aluminum alloy comprises aluminum, less than 0.2 weight percent copper, less than 0.2 weight percent iron, 6.0 to 9.0 weight percent silicon, 0.6 to 1.5 weight percent magnesium, and greater than 0.8 weight percent manganese. The aluminum alloy further comprises less than 2 weight percent zinc, less than 0.1 weight percent nickel, less than 0.2 weight percent tin, less than 0.05 weight percent titanium; and 0.008 to 0.02 weight percent strontium. Manganese and iron have a weight ratio of at least 30:1. Furthermore, iron and manganese combined content is less than 2.0 weight percent.

公开(公告)号：US20220010874A1

公开(公告)日：2022-01-13

申请号：US16927172

申请日：2020-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert Parrish ,  Wenying Yang ,  Zhe Li ,  Abir R. Das ,  Chad M. Huls ,  Anil K. Sachdev

IPC: F16H57/04 ,  F04C14/18 ,  F04C2/10 ,  F04C2/08

Abstract: A hydraulic gerotor pump for an automatic transmission may comprise a housing and a gear set rotatably disposed within the housing. The gear set may comprise an inner gear and an outer gear having radially opposed intermeshing teeth that together define a plurality of circumferentially disposed variable volume pumping chambers therebetween. The housing may be made of a first aluminum-based material, and the inner gear and the outer gear of the gear set may be made of a second aluminum-based material. The linear coefficient of thermal expansion of the first aluminum-based material may be substantially the same as that of the second aluminum-based material.

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

IPC: C22C21/02 ,  G06F17/50 ,  B22D11/00

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.

公开(公告)号：US20170266726A1

公开(公告)日：2017-09-21

申请号：US15450691

申请日：2017-03-06

Applicant: GM Global Technology Operations LLC

Inventor： John M. Kremer ,  Wenying Yang

IPC: B22F3/03 ,  B22F3/105

CPC classification number: B22F3/03 ,  B22F3/105 ,  B22F2003/1053 ,  B22F2003/1054 ,  B22F2203/11 ,  B22F2998/10 ,  B22F2999/00 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/10 ,  B22F2003/248 ,  B22F3/164 ,  B22F2202/07 ,  B22F2202/11 ,  B22F3/18 ,  B22F5/08

Abstract: A method for densifying a surface of a powder metal part, includes blending a plurality of powdered metals to form a powder metal blend, actuating an upper punch and a lower punch to apply pressure to the powder metal blend to compact the powder metal blend, sintering the compacted powder metal blend in an oven, forming the compacted powdered metal blend into the powder metal part, heating a portion of the surface of the powder metal part, and densifying the portion of the surface of the powder metal part for a predetermined period of time after the portion of the powder metal part is heated to a predetermined temperature.

公开(公告)号：US20170107599A1

公开(公告)日：2017-04-20

申请号：US14886263

申请日：2015-10-19

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Wenying Yang ,  Bing Ye

IPC: C22C21/02 ,  B22D17/00 ,  C21D1/18 ,  C22F1/043 ,  C22F1/00

CPC classification number: C22C21/02 ,  B22D17/00 ,  B22D21/007 ,  C21D1/18 ,  C22F1/002 ,  C22F1/043

Abstract: Copper-free aluminum alloys suitable for high pressure die casting and capable of age-hardening under elevated temperatures. The alloy includes about 7-15 wt % silicon, about 0 to 0.6 wt % magnesium, about 0 to 1.0 wt % iron, about 0 to 1.0 wt % manganese, about 0 to 1.0 wt % zinc, about 0 to 0.1 wt % strontium, about 0 to 0.5 wt % titanium, about 0 to 0.5 wt % zirconium, about 0 to 0.5 wt % vanadium, about 0 to 0.5 wt % copper, and about 0 to 1.0 wt % nickel, with a balance of aluminum. Methods for making high pressure die castings and castings manufactured from the alloy.

公开(公告)号：US20150294448A1

公开(公告)日：2015-10-15

申请号：US14253119

申请日：2014-04-15

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Wenying Yang ,  James W. Knight

IPC: G06T7/00

CPC classification number: G06T7/0004 ,  G01N21/88 ,  G06T2207/30136

Abstract: A quantitative metallographic method to measure skin layer thickness in high pressure die cast aluminum components. Because the faster-cooling skin layer region exhibits a higher volume fraction of eutectic phases than that of a slower-cooling inner region, measurements showing such higher eutectic phases can be used to quantify such layer thickness. An image at various thicknesses of a location of interest in a cast component sample is first obtained using an image analyzer, from which eutectic volume fractions within each of the received images may be determined. Comparisons of the determined volume fractions can be made against a known or predicted quantity for a particular alloy composition, and then correlated to the skin layer thickness via differences between the received or measured quantities and those of the known standard.

Abstract translation: 用于测量高压压铸铝组件中的表层厚度的定量金相法。 因为更快冷却的表皮层区域表现出比较慢冷却的内部区域更高的共晶相体积分数，所以可以使用显示这种更高共晶相的测量来量化这种层厚度。 首先使用图像分析仪获得铸件成分样品中感兴趣位置的各种厚度的图像，从而可以确定每个接收图像内的共晶体积分数。 可以针对特定合金组合物的已知或预测量对所确定的体积分数进行比较，然后通过接收或测量的量与已知标准物质之间的差异与皮肤层厚度相关。