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
Polymer bonded fibrous coating on dipped rubber articles skin contacting external surface
Light-source control device, light-source control method, image reading device, and image forming apparatus
Synchronization processing circuit and synchronization processing method in wireless communication system
Validating the configuration of distributed systems
Systems and methods for updating a data store using a transaction store
Electrode and method for manufacturing the same
White light emitting lamp and white LED lighting apparatus including the same
  Randomly Featured Patents
Cart automatic brake mechanism
Method and system for audio CODEC voice ADC processing
Heater plug for diesel engines
Gas supply pipe for manufacturing semiconductor wafers
Overload protective apparatus utilizing a bimetal
Method of active sonar detection of a stationary target
Increased surface area for DRAM, storage node capacitors, using a novel polysilicon deposition and anneal process
Appliance for the wet cleaning of filter cartridges in fluidized-bed apparatuses, spray driers and moving bed installations
Tacker having anti-double firing devise for single firing mode
Composition and method for stimulation of aerobic bacteria