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    无缝方矩管
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    无缝方矩管

    发布时间:2016-11-03  

        无缝方矩管是一种具有中空截面周边没有接缝的长条钢材。管内是中空的,有设定一定的横截面积,大量用作输送流体的管道,如输送石油、天然气、煤气、水及某些固体物料的管道等,圆环截面在承受内部或外部径向压力时,受力较均匀,因此,绝大多数钢管是圆管。但是,圆管也有一定的局限性,如在受平面弯曲的条件下,圆管就不如方、矩形管抗弯强度大,一些农机具骨架、钢木家具等就常用方、矩形管。


    无缝方矩管


    1.方矩管的性能指数分析-塑性
    塑性是指金属材料在载荷作用下,产生塑性变形(永久变形)而不破坏的能力。
    2.方矩管的性能指数分析-硬度
    硬度是衡量金属材料软硬程度的指针。目前生产中测定硬度方法最常用的是压入硬度法,它是用一定几何形状的压头在一定载荷下压入被测试的金属材料表面,根据被压入程度来测定其硬度值。
    常用的方法有布氏硬度(HB)、洛氏硬度(HRA、HRB、HRC)和维氏硬度(HV)等方法。
    3.方矩管的性能指数分析-疲劳
    前面所讨论的强度、塑性、硬度都是金属在静载荷作用下的机械性能指针。实际上,许多机器零件都是在循环载荷下工作的,在这种条件下零件会产生疲劳。途还需有其他截面形状的异型钢管。

    无缝方矩管


    大口径厚壁无缝方矩管


    无缝方矩管

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