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    Centrifugal molding method for composite pipe having a resin concrete layer
    8.
    发明授权
    Centrifugal molding method for composite pipe having a resin concrete layer 失效
    具有树脂混凝土层的复合管的离心成型方法

    公开(公告)号：US5098628A

    公开(公告)日：1992-03-24

    申请号：US721307

    申请日：1991-06-26

    申请人： Hiroshi Okamoto ,  Takaaki Kawano ,  Toshiyuki Tsujiuchi ,  Hidenori Katayama

    发明人： Hiroshi Okamoto ,  Takaaki Kawano ,  Toshiyuki Tsujiuchi ,  Hidenori Katayama

    IPC分类号： B28B21/32 ,  B28C5/12

    CPC分类号： B28B21/32 ,  B28C5/1292

    摘要： A centrifugal molding method which can smooth the inner surface of the resin concrete layer of a resin concrete pipe or of a composite pipe having a resin concrete layer even without using any special sand conditioning mechanism and which is high in productivity includes producing a composite pipe having a resin concrete layer or producing a resin concrete pipe by moving an arm member of a pipe material feeding device forward and backward axially through a pipe forming outer mold rotating about an axis thereof and by feeding pipe materials from a discharge port formed in a front end of the arm member. The resin concrete layer is formed by feeding resin and aggregate to a mixing portion provided at the front end of the arm member through separate feed routes, mixing the two in the mixing portion and discharging the resulting mixed resin concrete material from the discharge port.

    摘要翻译： 即使不使用特殊的砂型调节机构也能够使树脂混凝土管的树脂混凝土管的树脂混凝土层或具有树脂混凝土层的复合管的内表面平滑的离心成型方法包括制造具有 树脂混凝土层，或者通过使管材供给装置的臂部件沿轴向向前后移动的管形成外模，并且通过从形成在前端的排出口供给管材来制造树脂混凝土管 的臂部件。 树脂混凝土层是通过分离的进料路线将树脂和聚集体进料到设置在臂构件的前端的混合部分而形成的，将两者混合在混合部分中并将所得到的混合树脂混凝土材料从排出口排出。

    Concrete pipes
    9.
    发明授权
    Concrete pipes 失效
    混凝土管

    公开(公告)号：US4049022A

    公开(公告)日：1977-09-20

    申请号：US593791

    申请日：1975-07-07

    申请人： Robert M. Farahar

    发明人： Robert M. Farahar

    IPC分类号： B28B21/32 ,  B28B21/56 ,  B28B21/62 ,  F16L9/08 ,  B28B21/48

    CPC分类号： F16L9/08 ,  B28B21/32 ,  B28B21/56 ,  B28B21/62

    摘要： A pipe of concrete, cement mortar or other cementitious material is formed by an integrally cast cementitious mass which is reinforced with a glass fibre strand or roving forming a substantially helical winding extending around the pipe and incorporated in the cement matrix of the cementitious mass. Preferably there are two windings, one incorporated in the outer periphery of the mass and the other incorporated in the inner periphery of the mass. The pipe is preferably made by a centrifugal casting operation in which a centrifugal casting mould is rotated and the glass fibre strand or roving is fed from a feeding device within the mould and is caused to adhere to the internal peripheral face of the mould and then the feeding device is moved axially along the mould as the mould rotates so that the winding is formed from the roving around the internal peripheral face of the mould. The concrete or other cementitious material is introduced into the mould at the same time as the glass fibre roving or subsequently and the winding becomes incorporated in the cement matrix of the cementitious material as the mould continues to be rotated.

    摘要翻译： 混凝土管，水泥砂浆或其他水泥质材料由整体铸造的水泥质材料形成，其用玻璃纤维线或粗纱加固，形成围绕管道延伸的基本上螺旋的绕组，并且结合到水泥质量块的水泥基质中。 优选地，存在两个绕组，一个结合在该质量块的外周中，另一个被并入该物质的内周。 该管优选通过离心铸造操作来制造，其中离心铸造模具旋转，并且玻璃纤维线或粗纱从模具内的进给装置进给并且被附着到模具的内周面，然后 当模具旋转时，进给装置沿着模具轴向移动，使得绕组由围绕模具的内周面的粗纱形成。 混凝土或其他水泥材料与玻璃纤维粗纱同时被引入模具中，或随后随着模具继续旋转而将纤维混合在水泥基材料的水泥基质中。