Resources Contact Us Home
Method of making a forging in closed-dies

Image Number 8 for United States Patent #4967584.

A closed-die forging having an annular flat surface portion and a corner portion at an outer periphery of the annular flat surface portion is made by a method consisting of a rough forging process and a finish forging process. In the rough forging process, a rough forged product is shaped so as to have an annular flat surface portion smaller in outer diameter than the first mentioned annular flat surface portion and a conical surface portion at an outer periphery of the second mentioned annular flat surface portion. The conical surface portion is so shaped as to extend increasingly outwards as it extend in the same direction of movement of a punch of a rough forging die for performing a forming operation. In the finish forging process, the conical surface portion is pushed by a punch of a finish forging die in the same direction as the rough forging product is pushed by the first mentioned punch in the rough forging process and thereby formed together with the second mentioned annular flat surface into the first mentioned annular flat surface portion perpendicular to the direction of movement of the second mentioned punch.

  Recently Added Patents
Method and system for advertisement using internet browser to insert advertisements
Using sets of OTDR receive fibers with different lengths of marker events to verify optical fiber connectivity
Bird deterrent
Wireless device with extendable antenna
Variety corn line LIC7382
Wireless refrigerant scale platform
Switchgear operating apparatus and three-phase switchgear
  Randomly Featured Patents
Method and apparatus for implementing a type 8B6T encoder and decoder
Method of controlling drying stresses by restricting shrinkage of ceramic coating
Method for producing different vehicle models as well as wheel suspension for a vehicle
Fastener attachment apparatus
Diagnosis of Williams syndrome and Williams syndrome cognitive profile by analysis of the presence or absence of a LIM-kinase gene
Data processing system with read operation splitting
Administration of an RNA stem loop structure to modulate protein synthesis
Heterocyclic compounds having a 2-(2-(N,N-bis(2-chloroethyl)-diamidophosphoryloxy) ethyl) radical
Spine distraction implant and method
Brake wear indicator