Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...
Patent
1992-11-30
1996-02-13
Silbaugh, Jan H.
Cleaning and liquid contact with solids
Processes
Including application of electrical radiant or wave energy...
134 221, 134 35, B08B 310
Patent
active
054908825
ABSTRACT:
A technique for removing loose powder from the interior surfaces of ceramic molds made using layer manufacturing processes, such as three dimensional printing processes. The interior of a mold can be filled with liquid, such as water, which is boiled by applying microwave energy of a frequency selected to heat the liquid. The particles are entrained in the flow caused by the boiling liquid. Alternatively, fine particles are introduced into the mold and the mold is agitated to dislodge the particles and the powder so that they can be poured out of the mold. Such technique tends also to remove the surface finish of the mold. Any of the particles which remain can be dissolved in a liquid and removed in the liquid from the mold. Further, the surface finish of the mold can be improved by casting a slip of fine particles onto the surface to form a generally level, and preferably non-conformal, coating on the surfaces.
REFERENCES:
patent: 2671741 (1954-03-01), Duvall
patent: 3302655 (1967-02-01), Sasaki et al.
patent: 3451401 (1969-06-01), Levinson
patent: 3887392 (1975-06-01), Tang
patent: 3990906 (1976-11-01), Johnston et al.
patent: 4247508 (1981-01-01), Housholder
patent: 4504322 (1985-03-01), Adwalpalker et al.
patent: 4561902 (1985-12-01), Lee
patent: 4575330 (1986-03-01), Hull
patent: 4665492 (1987-05-01), Masters
patent: 4791022 (1988-12-01), Graham
patent: 4818562 (1989-04-01), Arcella et al.
patent: 4863538 (1989-09-01), Deckard
patent: 4929402 (1990-05-01), Hull
patent: 5121329 (1992-06-01), Crump
patent: 5147587 (1992-09-01), Marcus et al.
Kodama, H., "Automatic Method for Fabricating a Three-Deminsional Plastic Model with Photo-Hardening Polymer", Review of Scientific Instruments, vol. 52, No. 11, Nov. 1981.
Wohlers, Terry, "Creating Parts by the Layers", Cadence, Apr., 1989, pp. 73-76.
Bredt James F.
Cima Michael J.
Khanuja Satbir
Sachs Emanuel M.
Chaudhry Saeed
Massachusetts Institute of Technology
Silbaugh Jan H.
LandOfFree
Process for removing loose powder particles from interior passag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for removing loose powder particles from interior passag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removing loose powder particles from interior passag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-238523