METHOD OF MANUFACTURING A CRANKSHAFT FROM A HIGH SHRINK METAL ALLOY
    3.
    发明申请
    METHOD OF MANUFACTURING A CRANKSHAFT FROM A HIGH SHRINK METAL ALLOY 审中-公开
    从高密度金属合金制造起重机的方法

    公开(公告)号:US20160084295A1

    公开(公告)日:2016-03-24

    申请号:US14492714

    申请日:2014-09-22

    Abstract: A crankshaft includes a pin bearing journal, and a counterweight. The pin bearing journal defines a hollow pin core. The hollow pin core includes a first pin core section and a second pin core section, and an enlarged central section disposed between the first pin core section and the second pin core section. The first and second pin core sections each define a cross section having a first and second cross sectional area respectively, and the enlarged central section defines a third cross section defining a third cross sectional area, with the third cross sectional area larger than the first and second cross sectional areas. An isolation window extends through the counterweight. The crankshaft is cast from a high shrink steel alloy having a shrinkage factor equal to or greater than 1%. The enlarged central section and the isolation window improve the castability of the high shrink steel alloy.

    Abstract translation: 曲轴包括销轴承轴颈和配重。 销轴承轴颈定义了空心销芯。 中空销芯包括第一销芯部分和第二销芯部分,以及设置在第一销芯部分和第二销钉部分之间的扩大中心部分。 第一和第二销芯部分分别限定具有第一和第二横截面面积的横截面,并且扩大的中心部分限定限定第三横截面积的第三横截面,第三横截面积大于第一横截面积 第二横截面。 隔离窗延伸穿过配重。 曲轴由收缩率等于或大于1%的高收缩钢合金铸造。 扩大的中心部分和隔离窗提高了高收缩钢合金的铸造性能。

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