Title:
PRECISION INVESTMENT CASTING PROCESS
Document Type and Number:
Japanese Patent JP3937460
Kind Code:
B2
Abstract:
PURPOSE: To produce a cast piece requiring an extremely thin and intricate core with high quality at a low cost without the occurrence of cracking by using a temporary casting mold produced by pouring a liquid onto a positive pattern and solidifying the liquid.
CONSTITUTION: The positive pattern 210 of the same structure as the cast piece 200 to be produced is produced by using a layer of elastic material 211 existing on a rigid supporting piece 212. The liquid M214 is poured into the internal cavity 213 formed by the pattern 210 and is cooled and solidified to temperature lower than its melting point. The pattern 210 is then removed and the solidified mold M214 is formed as the temporary mold. the temporary mold is similarly assembled from another pattern and the liquid A having the melting temperature higher than the melting temperature of the liquid M214 is poured into the generated internal cavity and is solidified. The temporary mold is set between the melting point of the liquid M and the melting point of the liquid crystal A to melt the temporary mold. The remaining temporary pattern is immersed into a ceramic slurry to form a shell. The temporary pattern is discharged at the temperature above the melting point of the liquid A and molten metal is filled therein.
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Inventors:
Giuan de Antonio Gonyalons
Ricardo Inn South Tay Martinez de Rahidalga
Ricardo Inn South Tay Martinez de Rahidalga
Application Number:
JP9706494A
Publication Date:
June 27, 2007
Filing Date:
April 12, 1994
Export Citation:
Assignee:
Giuan de Antonio Gonyalons
Ricardo Inn South Tay Martinez de Rahidalga
Ricardo Inn South Tay Martinez de Rahidalga
International Classes:
B22C7/02; B22C9/04; B22D25/02; (IPC1-7): B22C7/02; B22C9/04; B22D25/02
Domestic Patent References:
| JP63144841A |
Attorney, Agent or Firm:
Heikichi Odashima
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