CENTRIFUGALLY-CAST TUBE AND RELATED METHOD AND APPARATUS FOR MAKING SAME
    22.
    发明申请
    CENTRIFUGALLY-CAST TUBE AND RELATED METHOD AND APPARATUS FOR MAKING SAME 审中-公开
    离心管及其制造方法及装置

    公开(公告)号:US20090175697A1

    公开(公告)日:2009-07-09

    申请号:US12404626

    申请日:2009-03-16

    IPC分类号: B23D5/02 B23D13/04

    摘要: An improved centrifugally-cast tube is provided, along with a related method and apparatus of making the tube. The tube includes a plurality of grooves and bosses that are mechanically machined into an interior surface of the tube, such as by a broaching process. The profile of grooves and bosses may be defined by a plurality of intersecting concave and convex radii. The tube is resistant to creep, carburization and metal dusting. The tube also has an enhanced heat transfer rate, and a desirable surface roughness. A method of making the tube is also provided. The method essentially consists of mechanically deforming the interior surface of the tube by passing a series of cutting inserts on support rings having incrementally-differing dimensions over the interior surface. An apparatus is also provided which includes a telescoping shaft upon which is mounted at least one cutting tool that has a plurality of cutting inserts and is adapted to form a plurality of grooves and bosses in the interior surface of the tube. The grooves and bosses may be straight or spiraled.

    摘要翻译: 提供了一种改进的离心铸管,以及制造该管的相关方法和装置。 该管包括多个槽和凸台,例如通过拉削工艺机械加工到管的内表面中。 凹槽和凸起的轮廓可以由多个相交的凹凸半径限定。 该管耐蠕变,渗碳和金属粉尘。 管也具有增强的传热速率和期望的表面粗糙度。 还提供了制造管的方法。 该方法基本上包括通过将一系列切削刀片通过在内表面上具有递增不同尺寸的支撑环上的机械变形来使管的内表面变形。 还提供了一种装置,其包括伸缩轴,在该装置上安装有至少一个具有多个切削刀片的切削工具,并且适于在管的内表面中形成多个凹槽和凸起。 凹槽和凸起可以是直的或螺旋形的。

    CENTRIFUGALLY-CAST TUBE AND RELATED METHOD AND APPARATUS FOR MAKING SAME
    23.
    发明申请
    CENTRIFUGALLY-CAST TUBE AND RELATED METHOD AND APPARATUS FOR MAKING SAME 审中-公开
    离心管及其制造方法及装置

    公开(公告)号:US20070178328A1

    公开(公告)日:2007-08-02

    申请号:US11690272

    申请日:2007-03-23

    IPC分类号: B22D7/00

    摘要: An improved centrifugally-cast tube is provided, along with a related method and apparatus of making the tube. The tube includes a plurality of grooves and bosses that are mechanically machined into an interior surface of the tube, such as by a broaching process The profile of grooves and bosses may be defined by a plurality of intersecting concave and convex radii. The tube is resistant to creep, carburization and metal dusting. The table also has an enhanced heat transfer rate, and a desirable surface roughness. A method of making the tube is also provided. The method essentially consists of mechanically deforming the interior surface of the tube by passing a series of cutting inserts on support rings having incrementally-differing dimensions over the interior surface. An apparatus is also provided which includes a telescoping shaft upon which is mounted at least one cutting tool that has a plurality of cutting inserts and is adapted to form a plurality of grooves and bosses in the interior surface of the tube. The grooves and bosses may be straight or spiraled.

    摘要翻译: 提供了一种改进的离心铸管,以及制造该管的相关方法和装置。 该管包括多个凹槽和凸起,例如通过拉削工艺机械加工到管的内表面中。凹槽和凸起的轮廓可由多个相交的凹凸半径限定。 该管耐蠕变,渗碳和金属粉尘。 该表还具有增强的传热速率和期望的表面粗糙度。 还提供了制造管的方法。 该方法基本上包括通过将一系列切削刀片通过在内表面上具有递增不同尺寸的支撑环上的机械变形来使管的内表面变形。 还提供了一种装置,其包括伸缩轴,在该装置上安装有至少一个具有多个切削刀片的切削工具,并且适于在管的内表面中形成多个凹槽和凸台。 凹槽和凸起可以是直的或螺旋形的。