Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Hanger
Method for delivering a fluid to a patient
Double-clocked specialized processing block in an integrated circuit device
System and method for stateless, fault tolerance and load balanced data collection using overlay namespaces
Software update syndication
Optical device
Device for supporting brake shoes of a drum brake
  Randomly Featured Patents
Variable speed constant frequency power system with auxiliary DC output
Substituted quinolinones having herbicidal action
Camera apparatus
Process for autotrophic perchlorate reduction using elemental sulfur and mollusk shells
Compound element
Boot for a rack and pinion steering gear assembly
Probe wiping
R-F electrodes for removably providing electrical energy to an apparatus during R-F energy reactive treatment processes
Method for detecting the minimum opening time of a reducing agent feed device in an exhaust gas aftertreatment system comprising an SCR catalyst
Rotary connector