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    Spheroidal graphite cast iron for an engine exhaust system
    1.
    发明授权
    Spheroidal graphite cast iron for an engine exhaust system 有权

    公开(公告)号：US10030289B2

    公开(公告)日：2018-07-24

    申请号：US15120651

    申请日：2015-02-06

    申请人： Doosan Infracore Co., Ltd.

    发明人： Ki-Hwan Jung ,  Young-Kyu Ju ,  Jong-Kwon Chung ,  Jae-Hyoung Hwang ,  Sik Yang ,  Dong-Seob Shim ,  Sang-Beom Kim

    IPC分类号： F01N13/10 ,  C22C37/10 ,  C22C37/04 ,  F01N13/16

    摘要： A spheroidal graphite cast iron for a component of an engine exhaust system includes carbon ranging from about 3.0 wt % to about 3.4 wt %, silicon ranging from about 4.2 wt % to about 4.5 wt %, manganese ranging from about 0.1 wt % to about 0.3 wt %, sulfur ranging from about 0.002 wt % to about 0.01 wt %, phosphorous in a range equal to or less than about 0.05 wt %, magnesium ranging from about 0.035 wt % to about 0.055 wt %, molybdenum ranging from about 0.9 wt % to about 1.2 wt %, nickel ranging from about 0.2 wt % to about 0.5 wt %, vanadium ranging from about 0.4 wt % to about 0.6 wt %, niobium ranging from about 0.1 wt % to about 0.4 wt %, cerium ranging from about 0.005 wt % to about 0.01 wt %, aluminum ranging from about 0.003 wt % to about 0.007 wt %, and a remainder of iron.

    METHOD FOR MANUFACTURING HIGH STRENGTH FLAKE GRAPHITE CAST IRON, FLAKE GRAPHITE CAST IRON MANUFACTURED BY THE METHOD, AND ENGINE BODY COMPRISING THE CAST IRON FOR INTERNAL COMBUSTION ENGINE
    6.
    发明申请
    METHOD FOR MANUFACTURING HIGH STRENGTH FLAKE GRAPHITE CAST IRON, FLAKE GRAPHITE CAST IRON MANUFACTURED BY THE METHOD, AND ENGINE BODY COMPRISING THE CAST IRON FOR INTERNAL COMBUSTION ENGINE 有权
    用于制造高强度FLAKE石墨铸铁的方法，通过该方法制造的FLAKE石墨铸铁，以及包含用于内燃机的铸铁的发动机体

    公开(公告)号：US20150027399A1

    公开(公告)日：2015-01-29

    申请号：US14368184

    申请日：2012-12-07

    申请人： DOOSAN INFRACORE CO., LTD. .

    发明人： Ki Hwan Jung ,  Dong Seob Shim ,  Sik Yang ,  Jae Hyoung Hwang

    IPC分类号： C22C33/08 ,  F02F7/00 ,  B22D25/02 ,  C21C1/08 ,  C22C37/10

    CPC分类号： C22C33/08 ,  B22D1/00 ,  B22D25/02 ,  C21C1/08 ,  C21C2250/00 ,  C22C33/04 ,  C22C37/00 ,  C22C37/04 ,  C22C37/10 ,  F02F7/0021 ,  F02F7/0024

    摘要： The present disclosure relates to a flake graphite cast iron simultaneously having high strength, good machinability, and fluidity, to a method for manufacturing same, and to an engine body comprising the flake graphite cast iron for an internal combustion engine and, more particularly, to a method for manufacturing a flake graphite cast iron, for an engine cylinder block and head having improved castability, a low possibility of the occurrence of chill due to ferroalloy, stable tensile strength and yield strength, and good machinability by adding a trace of strontium in a cast iron including carbon (C), silicon (Si), manganese (Mn), sulfur (S), and phosphorus (P), which are five elements of the cast iron, molybdenum (Mo), a high strengthening additive, and copper (Cu) while controlling the ratio (S/Sr) of the sulfur (S) content to the strontium (Sr) content in the cast ion.

    摘要翻译： 本公开涉及同时具有高强度，良好的机械加工性和流动性的片状石墨铸铁，其制造方法，以及包括用于内燃机的片状石墨铸铁的发动机主体，更具体地，涉及 用于制造片状石墨铸铁的方法，用于具有改善浇铸性的发动机气缸体和头部，由于铁合金发生冷却的可能性低，拉伸强度和屈服强度稳定，并且通过在锶中添加痕量的锶而具有良好的机械加工性 包括碳（C），硅（Si），锰（Mn），硫（S）和磷（P））的铸铁是铸铁的五个元素，钼（Mo），高强度添加剂和 铜（Cu），同时控制硫（S）含量与铸造离子中锶（Sr）含量的比（S / Sr）。