Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold
Patent
1978-08-03
1980-07-01
Arnold, Donald J.
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
By reciprocating or vibrating mold
222559, 222561, 264 60, B28B 104, B28B 110
Patent
active
042106176
ABSTRACT:
Method of casting an integral slide gate and nozzle assembly wherein a casing (11) conforming to the exterior sides and bottom of the valve is placed upside down on a flat smooth plate (12), a tube (14) is placed within the mold so formed to produce a channel in the cast valve, a first castable refractory exhibiting good resistance to molten metal is cast in the bottom of the mold, a tube (19) is placed about the passage-forming tube (14), the same first refractory castable is cast between the two tubes, and a refractory of lesser resistance to molten metal is cast within the remainder of the mold, the second tube (19) being removed after the casting is complete. Preferably casting is carried out while vibration is applied to the mold, the vibration continuing until after removal of the second tube (19). The second refractory can be an insulating material. Preferably the first castable is a high alumina material, for example one containing over 70%, most preferably over 90%, Al.sub.2 O.sub.3.
REFERENCES:
patent: Re27237 (1971-11-01), Shapland
patent: 2008117 (1935-07-01), Tone
patent: 2843646 (1958-07-01), Conant
patent: 3492383 (1970-01-01), Heimgartner
patent: 3685707 (1972-08-01), Shapland
patent: 3731912 (1973-05-01), Kutzer
patent: 3841539 (1974-10-01), Shapland et al.
Arnold Donald J.
Calrow Paul E.
Kaiser Aluminum & Chemical Corporation
McQuarrie Malcolm
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