Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and casting device for precision casting










Image Number 3 for United States Patent #6253828.

For the production of precision cast objects a gas change method is used. A melting crucible (1) and a casting mold (2) with at least partially porous walls are disposed in a gastight receptacle (5). The casting mold (2) with the mold cavity (3) is evacuated before the pouring-in process and subsequently flushed with a light gas, for example helium. After the mold cavity (3) is filled, the surface level (18) of the melt in the casting mold (2) is acted upon by a second heavy gas, for example argon, and subjected to excess pressure. A better degree of filling of the mold cavity (3) and an improved structure of the cast object results.








 
 
  Recently Added Patents
Systems and methods for DC-to-DC converter control
Processing color and panchromatic pixels
Portable reading device with mode processing
Light fixture
Personal alarm device for headwear for proximity detection
Catalyst and process of hydrocarbon feedstock reformation to hydrogen and carbon monoxide
Data processing circuit with arbitration between a plurality of queues
  Randomly Featured Patents
Wood-type golf club head
Vacuum power head with bare floor feature
Method for supporting a GMPLS hierarchy through multiple routing instances
Novel ionic polymer compositions
Method of implanting a deformable intraocular corrective lens
Arrow fletching method
Valves for a duct, and two-stroke combustion engine incorporating the valves
Spooled barbwire dispenser
Selectively stiff FDB bearing for better servo write
Resource pooling system and method in communication systems