Title:
【発明の名称】精密鋳造用の方法と鋳造装置
Document Type and Number:
Japanese Patent JP2001518847
Kind Code:
A
Abstract:
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.
Inventors:
Writer christian
Application Number:
JP54220098A
Publication Date:
October 16, 2001
Filing Date:
March 17, 1998
Export Citation:
Assignee:
Yasui Shozui
Writer christian
Writer christian
International Classes:
B22D18/06; B22D23/00; B22D27/00; B22D27/13; B22D27/15; (IPC1-7): B22D18/06; B22D23/00; B22D27/13; B22D27/15
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)