Title:
鋳物の製法及び鋳型フェイスコートスラリー
Document Type and Number:
Japanese Patent JP4730863
Kind Code:
B2
Abstract:
Method of making a casting by investment casting of a metal or alloy, especially titanium and its alloys, in a ceramic investment shell mold in a manner to provide enhanced x-ray detectability of any sub-surface ceramic inclusions that may be present below exterior surfaces of the casting. The method involves forming a ceramic mold facecoat and/or back-up layer including erbia or other x-ray or neutron-ray detectable ceramic component. The facecoat/back-up layer is/are formed using a ceramic slurry comprising erbia and other optional ceramic particulates, an inorganic binder, and an inorganic pH control agent. The slurry is applied to a pattern of component to be cast to form the mold. A metal or alloy is cast in the mold, and the solidified casting is removed from the mold. The casting is subjected to radiography to detect any sub-surface ceramic inclusions below the exterior surface thereof not detectable by visual inspection of the casting.
Inventors:
Elliott S. Lasso
George Earl. Travel
Kelly A. Codiol
George Earl. Travel
Kelly A. Codiol
Application Number:
JP31697498A
Publication Date:
July 20, 2011
Filing Date:
October 20, 1998
Export Citation:
Assignee:
Homet Research Corporation
International Classes:
B22D46/00; B22C1/00; B22C1/16; B22C9/04; B22D21/00; B22D29/00
Domestic Patent References:
| JP7505832A | ||||
| JP605519A | ||||
| JP8151336A | ||||
| JP4240166A | ||||
| JP61113777A |
Attorney, Agent or Firm:
Yoshimi Saigo