中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

193 records (took 0.028 seconds)

    Methods to increase solid solution zirconium in aluminum alloys
    21.
    发明授权
    Methods to increase solid solution zirconium in aluminum alloys 有权

    公开(公告)号：US10358695B2

    公开(公告)日：2019-07-23

    申请号：US15481666

    申请日：2017-04-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Michael J. Walker ,  Qigui Wang

    IPC: C22C1/02 ,  C22C21/00 ,  C22C45/00 ,  C22C45/08 ,  C22C1/03 ,  C22C9/00 ,  C22F1/04 ,  C22C16/00

    Abstract: A method of making an aluminum alloy containing zirconium includes heating a first composition comprising aluminum to a first temperature of greater than or equal to about 580° C. to less than or equal to about 800° C. The method further includes adding a second composition including a copper-zirconium compound to the first composition to form a third composition. The copper-zirconium compound of the second composition has a molar composition of greater than or equal to about 41% zirconium to less than or equal to about 67% zirconium and a balance of copper. The method also includes solidifying the third composition at a cooling rate of greater than or equal to about 0.1° C./second to less than or equal to about 100° C./second to a second temperature less than or equal to a solidus temperature and decomposing the copper-zirconium compound at a third temperature of less than or equal to about 715° C.

    Method to determine skin-layer thickness in high pressure die castings
    25.
    发明授权
    Method to determine skin-layer thickness in high pressure die castings 有权
    确定高压压铸件中皮层厚度的方法

    公开(公告)号：US09576352B2

    公开(公告)日：2017-02-21

    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 ,  G01N21/88

    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。

    COMPENSATION MECHANISM FOR CAST ROTOR LAMINATION STACK HEIGHT AND COMPRESSION PRESSURE CONTROL
    26.
    发明申请
    COMPENSATION MECHANISM FOR CAST ROTOR LAMINATION STACK HEIGHT AND COMPRESSION PRESSURE CONTROL 有权
    铸件转子堆叠高度和压缩压力控制补偿机制

    公开(公告)号：US20150165523A1

    公开(公告)日：2015-06-18

    申请号：US14105239

    申请日：2013-12-13

    Applicant: GM Global Technology Operations LLC

    Inventor： Richard J. Osborne ,  Kevin P. Coleman ,  Margarita P. Thompson ,  Qigui Wang

    IPC: B22D19/00 ,  B22D17/24

    CPC classification number: B22D19/0054 ,  B22D17/24

    Abstract: Integrated devices and methods for compensating electric grade steel lamination stack height for use in a conventional two-plate high pressure die cast tool used for casting aluminum induction rotors. These devices and methods allow for significant variation in the lamination stack height without associated failures related to stack height variation, and also ensure constant and accurate clamping pressure on both the OD and ID of the steel lamination stack which prevents electric insulation damage, metal flow between laminations, large casting metal flash, and tool damage for excessive height laminations stacks. The clamping pressure is adjustable and is actuated from a single hydraulic cylinder which allows for a wide range of pressures to accommodate fine adjustment of clamping pressure to insure no damage occurs to the laminations.

    Abstract translation: 用于补偿电级钢板叠层高度的集成装置和方法，用于铸造铝感应转子的常规双板高压压铸工具中。 这些装置和方法允许层叠堆叠高度的显着变化而没有与堆叠高度变化相关联的故障，并且还确保钢层压堆叠的OD和ID上的恒定和精确的夹紧压力，防止电绝缘损坏，金属间流动 叠片，大型铸造金属闪光，以及过高高度叠片的刀具损坏。 夹紧压力是可调节的，并且由单个液压缸致动，该液压缸允许宽范围的压力以适应夹紧压力的精细调节，以确保不会对叠片产生损坏。

    METALLOGRAPHIC METHOD FOR ACCURATE MEASUREMENT OF PORE SIZES AND DISTRIBUTIONS IN METAL CASTINGS
    27.
    发明申请
    METALLOGRAPHIC METHOD FOR ACCURATE MEASUREMENT OF PORE SIZES AND DISTRIBUTIONS IN METAL CASTINGS 有权
    精密测量金属铸件中孔径和分布的金相图法

    公开(公告)号：US20130336576A1

    公开(公告)日：2013-12-19

    申请号：US13891235

    申请日：2013-05-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： James W. Knight ,  Qigui Wang

    IPC: G06T7/00

    CPC classification number: G06T7/0004 ,  G06T7/41 ,  G06T2207/10061 ,  G06T2207/30116

    Abstract: A quantitative metallographic method to measure pore sizes and pore distributions in cast aluminum components. An image of a location of interest in a cast component sample is first obtained using an image analyzer. Spacing criteria, such as a measure of the secondary dendrite arm spacing, may be used with the received image to provide evidence of pore clustering. This allows the system to performing calculations to determine if multiple pores can be clustered or grouped together as a single pore in three-dimensional space. From this, the total area of the pores in each of these groups or clusters is calculated and used as a representation of the pore area for that cluster. In general, pore size and pore distribution measurements in cast components achieved by the present invention show accurate predictions of pore size and spacing, and in particular evidence a reduced tendency to under-predict the size and distribution of actual pores.

    Abstract translation: 用于测量铸铝组分中的孔径和孔分布的定量金相法。 首先使用图像分析仪获得投射成分样本中感兴趣的位置的图像。 间隔标准，例如二次枝晶臂间距的测量，可以与接收的图像一起使用以提供孔聚集的证据。 这允许系统执行计算以确定多孔是否可以聚集或组合在一起作为三维空间中的单个孔。 由此，计算每个这些组或簇中的孔的总面积，并将其用作该簇的孔面积的表示。 通常，通过本发明实现的铸造组分中的孔径和孔分布测量显示了孔径和间距的准确预测，并且特别地证明了预测实际孔的尺寸和分布的降低的倾向。

    CLOSED-LOOP LASER-WELD ASSEMBLIES
    29.
    发明申请
    CLOSED-LOOP LASER-WELD ASSEMBLIES 有权

    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

    IPC: B23K26/26 ,  F16B5/08

    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.

Patent Agency Ranking