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    DIE CASTING ALUMINUM ALLOY, PRODUCTION METHOD OF DIE CASTING ALUMINUM ALLOY, AND COMMUNICATIONS PRODUCT
    6.
    发明申请
    DIE CASTING ALUMINUM ALLOY, PRODUCTION METHOD OF DIE CASTING ALUMINUM ALLOY, AND COMMUNICATIONS PRODUCT 审中-公开

    公开(公告)号：US20190203324A1

    公开(公告)日：2019-07-04

    申请号：US16233405

    申请日：2018-12-27

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xiaorui LIU ,  Naier MENG ,  Banghong HU

    IPC: C22C21/04 ,  B22D21/00 ,  C22F1/043 ,  C22C1/02

    CPC classification number: C22C21/04 ,  B22D21/007 ,  C22C1/026 ,  C22C21/02 ,  C22F1/04 ,  C22F1/043

    Abstract: Embodiments of the present disclosure provide a die casting aluminum alloy, including constituents with the following mass percentages: silicon: 4.0% to 10.0%; magnesium: 0.2% to 1.0%; copper: ≤0.1%; manganese: ≤0.1%; zinc: ≤0.1%; ferrum: ≤1.3%; titanium: ≤0.2%; inevitable impurities: ≤0.15%; and the rest: aluminum. The die casting aluminum alloy has a high heat-conducting property, good formability, high corrosion resistance, and a good mechanical property. This can resolve a prior-art problem that forming and heat dissipation requirements of a communications product with a complex structure, high heat flux density, and large power cannot be met at the same time because it is difficult for a die casting aluminum alloy to have both a high heat-conducting property and good formability. The embodiments of the present disclosure further provide a production method of the die casting aluminum alloy and a communications product.

    Die-casting process method for die-cast molding of metal in semi-solid state
    8.
    发明授权
    Die-casting process method for die-cast molding of metal in semi-solid state 有权

    公开(公告)号：US10081054B2

    公开(公告)日：2018-09-25

    申请号：US15512825

    申请日：2015-09-17

    Applicant: ZHUHAI RUNXINGTAI ELECTRICAL CO., LTD

    Inventor： Huaide Ren ,  Victor Wang ,  Gunan Li ,  Ying Zhang

    IPC: B22D17/00 ,  B22D17/08 ,  B22D18/02 ,  C22C21/04

    CPC classification number: B22D17/007 ,  B22D17/08 ,  B22D18/02 ,  B22D21/007 ,  B22D21/04 ,  C22C21/04

    Abstract: A die-casting process method for die-cast molding of a metal in a semi-solid state, wherein a semi-solid state die-casting machine is used as a processing device and a pulper is used as a device for preparing and delivering a slurry in a semi-solid state; the method comprises the steps: spraying a mold release agent and mold clamping; melting the raw material and keeping the temperature; adding a metal modificator into the molten raw material to prepare the slurry in a semi-solid state; transferring the slurry in a semi-solid state into a mold by the pulper; die-casting, opening the mold and exporting a die-cast; removing the sprue to obtain the final die-cast. In the process method, a metal modificator is added to the liquid metal raw material during the preparation of the slurry in a semi-solid state so as to generate more crystal nuclei, so that die-cast products have better mechanical properties; by way of die-casting the slurry in a semi-solid state, during mold stripping the die-cast is low in temperature and small in deformation quantity, and the best shapes and surface smoothness of the product can be guaranteed; and the die-cast is compact interiorly with producing air holes, and the best interior structure and mechanical properties of the die-cast product are guaranteed.

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