Title:
【発明の名称】注入カップ貯蔵部を使用したインベストメント鋳造装置及びその鋳造方法
Document Type and Number:
Japanese Patent JP2002514508
Kind Code:
A
Abstract:
A ceramic investment mold is disposed in a casting chamber and communicates with a pour cup melt reservoir connected to the mold and having a reservoir volume for holding enough melt to fill the mold. The melt pour cup reservoir is communicated to the mold via an inverted loop feed gate so that the melt is fed from a lower region of the reservoir through the inverted loop feed gate to the mold upon gas pressurization of the reservoir. The loop feed gate is configured to have a loop region above the melt level in the reservoir so as to prevent melt flow from the reservoir to the more mold cavities in the absence of reservoir pressurization. While residing in the pour cup reservoir, oxides and other inclusion-forming particles in the melt can float to the upper surface of the melt, whereby the melt fed from the lower region of the reservoir to the mold via the inverted loop melt feed gate includes reduced amount of inclusion-forming particles. After the melt is introduced into the pour cup, a pressure cap can be positioned in sealing engagement with the pour cup to provide selective or local gas pressure on the melt in the pour cup reservoir to force the melt in the reservoir through the inverted loop feed gate into the mold cavities to fill same.
Inventors:
Soda Storm Mark El.
Gram Dale A.
Striker Leicester Gee.
Gram Dale A.
Striker Leicester Gee.
Application Number:
JP2000548107A
Publication Date:
May 21, 2002
Filing Date:
May 11, 1999
Export Citation:
Assignee:
Homet Research Corporation
International Classes:
B22D18/06; B22D18/04; B22D35/04; B22D39/06; B22D43/00; B22D45/00; (IPC1-7): B22D18/06; B22D39/06; B22D43/00; B22D45/00
Attorney, Agent or Firm:
Yoshimi Saigo