Dispensing – Processes of dispensing – Molten metal
Patent
1997-05-09
2000-02-15
Kastler, Scott
Dispensing
Processes of dispensing
Molten metal
222606, 264 28, 266286, B22D 4108
Patent
active
060242590
ABSTRACT:
A riser tube for transfer of molten metal therethrough, including a porous ceramic substrate having a hollow cylindrical structure and ceramic impregnant material penetrating into pores of the substrate and plugging at least a portion of the surface pores thereof, to improve gas impermeability of the substrate. According to the present invention, the porous ceramic substrate is immersed in impregnation media containing ceramic particles, the impregnation media is subjected to an elevated pressure such that the media penetrates the pores of the substrate, and the impregnated substrate is then fired, whereby the ceramic particles form a ceramic impregnant material that plugs at least a portion of the surface pores of the substrate.
REFERENCES:
patent: 3177161 (1965-04-01), Johannsen
patent: 3512571 (1970-05-01), Phelps
patent: 3757850 (1973-09-01), Diez
patent: 3816572 (1974-06-01), Roelofs
patent: 3885005 (1975-05-01), Downing
patent: 4007036 (1977-02-01), Gottschol
patent: 4061182 (1977-12-01), Diez
patent: 4103734 (1978-08-01), Mikotin
patent: 4153100 (1979-05-01), Balevski
patent: 4246209 (1981-01-01), Johannsen
patent: 4345743 (1982-08-01), Sivilotti
patent: 4369151 (1983-01-01), Johanssen
patent: 4428895 (1984-01-01), Blasch
patent: 4508159 (1985-04-01), Woltmann
patent: 4552800 (1985-11-01), Blasch
patent: 4569920 (1986-02-01), Johannsen
patent: 4963396 (1990-10-01), Ito
patent: 5202150 (1993-04-01), Benson
patent: 5269364 (1993-12-01), Murata
patent: 5429174 (1995-07-01), Wahnsiedler
patent: 5460854 (1995-10-01), Krug
Gardner Matthew T.
Larsen David A.
Blasch Precision Ceramics, Inc.
Kastler Scott
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