发明名称 |
Centrifugally-cast tube and related method and apparatus for making same |
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.
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申请公布号 |
US2003209126(A1) |
申请公布日期 |
2003.11.13 |
申请号 |
US20030465673 |
申请日期 |
2003.06.20 |
申请人 |
DEMAREST JOEL;VERDIER GILLES |
发明人 |
DEMAREST JOEL;VERDIER GILLES |
分类号 |
B23F5/28;B22D13/02;B23D43/04;C10G75/00;F16L9/02;F28F1/40;(IPC1-7):B23D21/14 |
主分类号 |
B23F5/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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