Resources Contact Us Home
Apparatus for making centrifugally-cast tube

Image Number 6 for United States Patent #8070401.

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.

  Recently Added Patents
Image processing unit, image processing method and program
Evaluation compiler method
User interface for integrating applications on a mobile communication device
Methods and apparatus for achieving multiple bit rates in passive optical networks
System and method of improving audio signals for the hearing impaired
Piperazinyl methyl phenyl cyclohexane compound
Error correct coding device, error correct coding method, and error correct coding program
  Randomly Featured Patents
Chair armrest
Process for preparing an ink-jet recording material
Recording apparatus with control of carriage driving motor
Respiratory gas supply apparatus and method
Spraying device and use of this device
Stage-fused transformer loop system and method of rapid diagnosis of fault cable or transformer failure within the system
Memory system and method having volatile and non-volatile memory devices at same hierarchical level
Covered energy transmission line carrier
Method and system for securing a personal computer to a rack
Optical recording medium