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    DIE-CASTING METHOD USING SINTERED MATERIAL AND A DIE-CAST PRODUCT MANUFACTURED THEREBY
    5.
    发明申请
    DIE-CASTING METHOD USING SINTERED MATERIAL AND A DIE-CAST PRODUCT MANUFACTURED THEREBY 有权

    公开(公告)号：US20220062982A1

    公开(公告)日：2022-03-03

    申请号：US17090652

    申请日：2020-11-05

    申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

    发明人： Hak Soo Kim ,  Seok Jun Kim

    IPC分类号： B22D19/00 ,  B22D21/00

    摘要： A die-casting method using a sintered material increases bonding strength between an insert and a casting portion. A die-cast product is manufactured using the die-casting method. The die-casting method includes an insert preparation step of preparing an insert having pores formed in a surface thereof by compacting iron-based powder and then sintering the compacted iron-based powder. The pores have a size of 100 μm or more and are distributed over the surface of the insert and the insert has a density of 6.4 to 6.9 g/cm3 The method includes a die-casting step of placing the prepared insert inside a mold and injecting molten aluminum into the mold so as to perform casting while causing the molten aluminum to infiltrate into the pores formed in the surface of the insert.

    Polypropylene resin composition for interior materials of automobile with advanced paint adhesivity and low specific gravity
    7.
    发明授权
    Polypropylene resin composition for interior materials of automobile with advanced paint adhesivity and low specific gravity 有权
    汽车内饰材料用聚丙烯树脂组合物，具有先进的油漆粘合性和低比重

    公开(公告)号：US09139725B2

    公开(公告)日：2015-09-22

    申请号：US13898750

    申请日：2013-05-21

    申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Daeha Co., Ltd.

    发明人： Jung Gyun Noh ,  Kyeong Hoon Jang ,  Hak Soo Kim ,  Han Ki Lee ,  Kyung Beom Seo ,  Han Pyol Kim ,  Im Taek Sung

    IPC分类号： C08L23/14

    CPC分类号： C08L23/14 ,  C08K3/20 ,  C08L23/0815 ,  C08L23/10 ,  C08L2205/03

    摘要： Disclosed is a polypropylene resin composition for automobile interior trim parts with superior paint adhesivity and low specific gravity. More specifically, a polypropylene resin composition for automobile interior trim parts having superior paint adhesivity and low specific gravity is disclosed, wherein a base resin including polypropylene, a propylene-ethylene copolymer or a mixture thereof is mixed with a reinforcer including magnesium hydroxide and an ethylene-butene elastomer. The present polypropylene resin composition allows for direct painting of an automobile interior trim part surface without primer treatment and provides excellent resistance to damage caused by impact.

    摘要翻译： 公开了一种具有优异的涂料粘附性和低比重的汽车内饰件的聚丙烯树脂组合物。 更具体地说，公开了一种具有优异的涂料粘附性和低比重的用于汽车内饰件的聚丙烯树脂组合物，其中包括聚丙烯，丙烯 - 乙烯共聚物或其混合物的基础树脂与包括氢氧化镁和乙烯的增强剂混合 丁烯弹性体。 本发明的聚丙烯树脂组合物允许直接涂漆汽车内饰件表面而不进行底漆处理，并提供优异的抗冲击损伤性。