Plastic and nonmetallic article shaping or treating: processes – Removal of liquid component or carrier through porous mold...
Patent
1987-08-06
1990-06-05
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Removal of liquid component or carrier through porous mold...
264 87, 264570, 264313, 425 84, 425 85, 4254051, B28B 126, B28B 706
Patent
active
049312413
ABSTRACT:
A process for producing a green composite structure by isostatic compression and filtration. A suspension of colloidal size matrix powders is established in a carrier liquid. The suspension is incorporated into a die chamber having a filter opening containing a filter which is permeable to filtrate from the suspension under applied pressure but substantially impermeable to the matrix powders. An elevated pressure is isostatically imposed on the colloidal suspension within the die chamber. The pressure is maintained for a period of time to expel at least 20% of the liquid originally in the colloidal suspension through the filter opening. A specific die chamber comprises a rigid cage structure and an expandable bladder within the cage structure into which the colloidal suspension is introduced. The cage structure is disposed within a pressure vessel which can be initially evacuated to cause the bladder to conform to the cage structure and then pressurized with fluid for the isostatic compression procedure.
REFERENCES:
patent: 1846279 (1932-02-01), Speirs
patent: 1863854 (1932-06-01), Jeffery
patent: 2311588 (1943-02-01), Denning
patent: 2342801 (1944-02-01), Guerci
patent: 3577635 (1971-05-01), Bergman et al.
patent: 3833389 (1974-09-01), Komeya et al.
patent: 4203936 (1980-05-01), Kiwak et al.
patent: 4507224 (1985-03-01), Toibana et al.
patent: 4543345 (1985-09-01), Wei
patent: 4560668 (1985-12-01), Hunold et al.
patent: 4596781 (1986-06-01), Carpenter
patent: 4612163 (1986-09-01), Nishio et al.
patent: 4652413 (1987-03-01), Tiegs
patent: 4702870 (1987-10-01), Setterholm et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, 3rd Edition, John Wiley & Sons, 1979, Refractory Matrix Powders, vol. 6, "Composite Materials", pp. 683-700.
Kirk-Othmer, Encyclopedia of Chemical Technology, 3rd Edition, John Wiley & Sons, 1979, vol. 19, "Powder Metallurgy", pp. 28-46.
Cate James M.
Fertig MaryLynn
Jackson William D.
LTV Aerospace and Defense Company
Sadacca Stephen S.
LandOfFree
Method for producing structures by isostatic compression does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for producing structures by isostatic compression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing structures by isostatic compression will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-490451