Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Video reproducing apparatus and video reproducing method
Case for electronic device
Battery structures and related methods
Process for preparing soybean curd using micronized solution of soybean curd
Synchronization of communication equipment
Monitoring apparatus for monitoring communication configurations of client devices
Method for manufacturing light emitting diodes
  Randomly Featured Patents
Suspending support for a crane cab
Terminal for detecting, signaling and evaluating various hazard criteria, such as fire or intrusion conditions
Roll baler
IC card
Reduced chlorine containing platinum catalysts
Method of installation of electrically heated pipe-in-pipe subsea pipeline
Sterilization indicator
Method for detecting projectile impact location and velocity vector
Single phase motor driving device
Method and device for detecting the presence of liquid at the suction inlet of a compressor of refrigerating fluid